US2746591A - Tabulating mechanism for typewriter or like machines - Google Patents

Description

May 22, 1956 M. W. NEWBERRY TABULATING MECHANISM FOR TYPEWRITER OR LIKE MACHINES 6 Sheets-Sheet 1 Filed April 30. 1952 A7 I l I181 120121 122 INVENTOR M6765 l K/VEWBE/sfi) ATTORNEYS May 22, 1956 M. w. NEWBERRY 2,746,591

TABULATING MECHANISM FOR TYPEWRITER OR LIKE MACHINES Filed April 50 1952 6 Sheets-Sheet 2 INVENTOR ME/Gs W. IVW5HRY BY 64 m x4094,

ATTORN EYS May 22, 1956 M. w. r EWBERRY 2,746,591

TABULATING MECHANISM FOR TYPEWRITER OR LIKE MACHINES Filed April 50, 1952 6 Sheets-Sheet 5 n INVENTOR 3 ME/GS W. NEH/BERRY Y swam 7M0) ATTORN EYS May 22, 1.956 M. w. NEWBERRY 2,746,591

TABULATING MECHANISM FOR TYPEWRITER OR LIKE MACHINES Filed April :50, 1952 a sheeis-sheet 4 fl] I: @i .252 5 i 1 i i 55 it: 3 k I lNVENTOR 155 76 ME/GS 14 A/EWBE RR) ATTORN EYS May 22, 1956 M. w. NEWBERRY 2,746,591

TABULATING MECHANISM FOR TYPEWRITER OR LIKE MACHINES Filed April 50. 1952 6 Sheets-Sheet 5 ME I619 W. NEWBERRY BY 6%; 2 40% ATTORNEYS y 22, 55 M. w. NEWBERRY 2,746,591

TABULATING MECHANISM FOR TYPEWRITEP. OR LIKE MACHINES 6 Sheets-Sheet 6 Filed April 50, 1952 INVENTOR ME/GS m4 IVEWBERRY .90

BY fidim 7 4 ATTORNEYS United States Patent TABULATING MECHANISM non TYPEWRITER on LIKE MACHINES Meigs W. Newberry, South Windsor, Conn, assignor to Royal McBee Corporation, a corporation of New York 7 Application April 30, 1952, Serial No. 285,219

20 Claims. 01. 197-178) This invention relates to tabulating mechanism for typewriting and like machines, and more particularly to tabulating mechanism of the kind which includes a tabulator stop on the main or stationary frame, and a tabulator stop on the traveling carriage, and mechanism for projecting one of the stops from an inactive position, in which it is not engageable with the other of the stops, to an active position in which it is engageable with the other of the stops.

Mechanism embodying the invention is adapted for use generally in connection with tabulating mechanisms of various kinds; but has special utility when embodied in tabulating mechanisms of the .ten key decimal or denominational kind in which depression of a selected one of a plurality of tabulator keys will effect movement of the carriage to a selected columnar or decimal position, thus facilitating the listing of multi-digit numbers in columns in proper ordinal or decimal point positions.

An object, of the invention is to provide tabulating mechanism including new and improved means for moving a settable tabular stop device from inactive position to active position, and for returning it to inactive position.

Another object of the invention is to provide tabulating mechanism of the kind referred to, including a key operable means for effecting an initial movement of the settable stop device in response to exertion of only a light pressure on the key, and power operable means for then effecting further movement of the tabular stop device to operative position, andfor returning the tabular stop device toinoperative position after completion of a tabulating operation.

Another object of the invention is to provide mechanism of the character stated constructed to be operable by means including an electrically operable driver, and which includes a device for preventing movement of the settable tabular stop device from its inoperative position when a switch controlling operation of the driver is in off position.

Another object of the invention is to-provide mechanism for automatically restoring the settable stop device to inoperative position in the event of concurrent performance ofa tabulating run of the carriage and operation of power driven carriage'returning means.

Another object of the invention is to provide a novel connection between an ordinary tabulator key, independent of the denominational keys, and one of the denominational tabular stop'devices for operating the tabulating mechanism to project that tabular stop device to operative position by depression of the ordinary tabulator key.

A further object of the invention is to provide a tabulating mechanism withnieans for disabling the usual margin stop mechanism when the tabulating mechanism is operating. I p

Other objects will become apparentfroma reading of the following description, the appended claims, and the accompanying drawings, in which:

Figure 1 is a vertical sectional view, fore and aft of 2 the front part of a typewriter embodying the invention, some parts being shown in elevation, and the movable parts being shown in their normal positions, that is, the positions which they occupy When the machine is not in use;

Figure 2 is a view similar to Figure 1 but showing the rear part of the typewriter, the two views, Figures 1 and 2, being intended to be considered as joined along the vertical dot-dash line x-x;

Figure 3 is a fragmentary sectional view on the in switch is set to render the normalizing mechanism inactive. Figures 4 and 4 are so relatively located on Sheet 3 of the drawings that the parts shown in these two figures, considered together, are in the same relative positions as those which they occupy in the machine itself;

Figure 5 is a fragmentary sectional view, drawn on an enlarged scale, showing a cushion connection between a link and lever for effecting power resetting of the frame mounted tabulating mechanism to its normal condition;

Figure 6 is a view similar to Figure 4 but showing the parts of the frame mounted tabulating mechanism in intermediate positions which they occupy during a carriage tabulating run and prior to arresting of the carriage in tabulating position;

Figure 7 also is a view similar to Figure 4 but showing the parts of the tabulating mechanism in the positions which they occupyafter having arrested the carriage in its tabulated position and just prior to resetting of the tabulating mechanism in its normal condition;

Figure 8 is a fragmentary horizontal sectional view on the line 8-8 of Figure 4 some of the parts being shown in elevation;

Figure 9 is an enlarged scale, fragmentary vertical sectional view on the line -9 of Figure 2 with some parts shown in elevation;

Figure 10 is an exploded perspective view of an adjustable shaft or rod mounting for frame carried tabulating blades, and an adjusting plate;

Figure 11 is a fragmentary plan view of a set of decimal tabulator keys and associated mechanism, some of the key stems being shown in section; and

Figure 12 is a fragmentary detail sectional view of key operated mechanism, the section being on the line 12-12 of Figure 11, and certain of the parts being shown in elevation.

The typewriting mechanism shown by way of example as embodying the invention in a preferred form is generally similar in many respects to the Royal standard office typewriter and the Royal electric typewriter. It includes a main frame element A provided with a lower track or rail 1 on which a carriage element B including endplates .2 and 3 is mounted for letter spacing and return movements by means of a carriage or top rail 4 and ball rollers, one of which is shown at 5 in Figures 1 and 2. The carriage B is equipped with the usual cylinder or platen C.

Type bars, not shown, are suitably mounted on the frame, for example on a frame-supported case-shifting segment, the type bars and segment being operable by mechanism which may be of the kind disclosed in the William H. Kupper United States Patent No. 2,590,777, granted March 25, 1952. Rearwardly extending end plate parts, one of which is shown at 3 in Figure 2, serve to mount a support, generally designated 6, for a plurality of tabulator means or stops 7-7. An arm 8 secured to and depending from the support 6 is provided with a roller 9 arranged to roll on a track 10 mounted on the main frame A so as to support the rear part of the carriage B for movement on the frame A.

The carriage B is urged to the left, that is, in the letter spacing or typing spacing direction, by suitable mechanism such as a conventional spring drum (not shown) which exerts a steady pull on a draw band connected by a clip 11 to an ear 12 on the right-hand carriage end plate 2 as shown in Figure 2. Feeding of the carriage to the left under the urge of the spring drum or other driving mechanism is controlled by escapement mechanism illustrated partially as including a rack 13 carried by an angle bar or rail 14 having rearwardly extending arms 15 pivotally mounted on the carriage at 16. Springs 17, connected to rearwardly extending portions of the arms 15 and anchored at 18 on the carriage, normally hold the escapement rack 13 in the position shown in Figure 2, in which the rack meshes with an escapement pinion 19 journaled on a shaft 20 carried by a frame-mounted bracket 21. The pinion 19 is fast with an escapement wheel 22 adapted to rotate about the shaft 20 and to co-operate with escapement pawls or dogs (not shown) which may be of the kind and operated in the manner disclosed, for example, in Patent No. 2,563,722 granted August 7, 1951, to Henry J. Hart.

In operation, when the escapement dog mechanism is actuated, the wheel 22 is permitted to turn in step-bystep increments so as to permit the rack 13 and, consequently, the carriage to be fed to the left in incremental letter spacing movements in the direction of typing.

In order to limit the travel of the carriage to the left for maintaining a right-hand margin on the work sheet, a margin determining center stop 23 is pivotally mounted on the frame as at 24. The center stop 23 carries a line lock lever 25 pivoted on the center stop as at 26 and having its upper end formed as a blade or finger 27 disposed in the path of a right margin stop 28 mounted for adjustable positioning on a margin stop bar 29 supported on the carriage B. The lower end of the line lock lever 25 is connected to mechanism (not shown) for locking the typing keys or otherwise preventing type bar operation when the carriage has reached a predetermined point in its travel in the letter spacing direction. A left margin stop (not shown) mounted on the bar 29 is cooperable with the center stop 23 for limiting travel of the carriage B to the right and thus determining the lefthand margin on the work sheet. The carriage may be driven to the right, that is in the return direction, either manually or by power operated means, not shown but which may, for example, be of the kind disclosed in Patent No. 2,567,937 granted to Henry I. Hart September 18, 1951.

In typing operation, when the carriage B moves to the left to a position just short of its maximum leftward travel position, the margin stop 23 engages the blade 27 of the line lock lever 25 so as to rock the lever and push the blade 27 against the upper part of the center stop 23, thereby bringing the carriage to rest and also operating the line lock mechanism through the rocking of the line lock lever 25.

In tabulating operation, the arms 15 and bar 14 are rocked clockwise as viewed in Figure 2 to raise the escapement rack 13 and disengage it from the escapement pinion 19, so as to condition the escapement mechanism to permit the aforementioned spring drum and draw band to move the carriage to the left in an uninterrupted travel or run until it is arrested by tabulating mechanism hereinafter described.

The tabulating mechanism includes the support 6 previously referred to, comprising upper and lower rack bars 321 and 31 respectively formed with transverse grooves 32, 33 which register with each other and which are spaced longitudinally of the rack bars at letter space intervals. Mounted on the stop frame or support 6 is a plurality of the laterally settable stop devices, several of which are designated 7 and are shown in their normal or inoperative positions, and another of which is designated 7 and is shown in its rearwardly projected or operative position. The tabular stops 7-7 are similar to individual stops disclosed in the patent to Myers et al. No. 1,892,071. Each includes a bridge or central portion 34, upper lugs 35 and 36, which project alongside opposite sides of the upper rack bar 30, and lower lugs 37 and 38 which project downwardly alongside opposite sides of the bottom rack bar 31. Each tabular stop part 77 is provided with a spring 39 mounted on a pin 40, with one end hooked at 41 around the edge of the tabular stop just above the lug 37, the other end of the spring being curved as at 42 so as to press against the top rack bar 30. The arrangement is such that each tabular stop can be shifted transversely of the frame 6 to an operative position at 7 or to an inoperative position shown at 7, the spring 39 frictionally and yieldably maintaining the stop in whichever position it has been set.

Many of the parts described above are of known construction and relative arrangement. The invention relates more particularly to other partsto be described hereinafter, and to the combination of such other parts with parts already described.

When a tabular stop is set in its operative position as shown at 7, its rear edge projects toward the back of the machine sufficiently to be engaged by one of a plurality of frame mounted stop devices adapted selectively and controllably to be moved into or out of the path of the operatively positioned stop 7 In the illustrative embodiment of the invention, the frame mounted stop devices are of such construction that when one has been moved to operative position it will be set or latched automatically to remain there until a tabulating operation has been completed, without its being necessary for a key or other mechanism, which moved the device to operative posi tion, to be held depressed or otherwise in operated position. Thus, the arrangement is such that a momentary operation of a tabular key or mechanism controlled thereby will set the selected frame mounted stop device in its operative position where it will remain until the tabulating operation has been completed, even though the tabular key or mechanism controlled thereby is returned to its inactive or normal position before the tabulating operation has been completed.

In the form shown, ten frame mounted stop devices or blades 43 are supported on a stop frame generally designated 44 carried on a cross bar 45 of the main frame A. The frame 44 includes two spaced side plates 46, 47 at the upper ends of which is mounted an adjustable bar or shaft 48 shown in detail in Figure 9. The shaft 48 includes a round central part 49 and a left end portion 50 which is eccentric with respect to the central part 49. The eccentric part 50 is mounted in an aperture 51 in the frame side plate 46, and has a threaded extension 52 for receiving nuts 53, the inner one of which abuts the outer face of the frame side plate 46. At its right end the shaft 48 is formed with a pin or shank 54 which is eccentric with respect to the central part 49 and which extends through a sleeve 55 mounted in an aperture 56 in the frame side plate 47. The sleeve 55 has a flange 57 which abuts the inner face of the end plate 47. A nut 58 threaded on the outer end of the eccentric part 54 bears against a washer 59 which forms a seat for the outer end of a compression spring 60 the inner end of which is seated in a counterbore 61 in the end plate 47.

The spring60 presses outwardly on the Washer 59 to urge the shaft 48 toward the right'so' that normally it will occupy the position shown in Figure 9' with the inner nut 53 at the left end of the shaft abutting the end plate 46-.

For reasons to be explained later, it is desirable to adjust the shaft 48 about its ads. For this purpose there is provided a sector plate 62 formed with an opening having a hat portion 63. The opening in the plate 62 is adapted to receive the eccentric part 50 on the shaft 48 with the flat part 63 engaging a corresponding flat part 64 on the shaft. shaft 48 may be adjusted about its axis. For holding the shaft .48 in adjusted position, the plate 62 is formed with an. arcuateslot 65- which receives a set screw 66 threaded in the left side plate 46; The plate 62 may be turned with the screw 66 loosened, to adjust the shaft 48, and the screw may then be tightened so as to clamp the plate 62 in fixed position and thusmaintain the adjustment of the shaft 48. i

The stop blades 43 are of similar construction. Each is formed with a cam means or slot 67 comprising an upper rearwardly offset portion 68, a lower forwardly offset portion 69, and an intervening inclined p'o'rtion 70. The cam slots 67 receive the central part 49 of the shaft 48 which projects through the slots of thewhole complement of blades 43, and mountsthe upper ends of the blades for vertical and fore-and-aft movement.

The blades 43 are provided with spacers or buttons 71 adapted normally to bear against adjacent blades so as to hold the blades spaced from each. other at letter spacing distances. To the left of the leftmost stop blade 43 is a member 72 formed with an aperture 73 through which the central part 49 of the shaft extends, the shoulder pro vided' by the enlarged eccentric part 50' of the shaft bearing against the "member 72. The member 72 is formed witha bent-over horizontal part 74 adapted to carry a cam element (not shown) for resetting stops 7 from their operative to' their inoperative positions when the carriage is moved on the frame A. The mechanism for resetting the carriage mounted stops in this manner does not in itself constitute the present invention so that the parts for operating the member 72' need not bede'scribed or shown. For understanding the present invention it will be sufiicient to consider that the plate 72 provides an abutment for the leftmost. stop blade 43.

The blades 43 are so mounted by the shaft 48 as to be movable vertically and horizontally, co-operation of the shaft part 48 with the camslots 67" causing the upper ends of the blades 43' tomove transversely to their downward movement, that is forwardly when the blades-move downwardly, and to move rearwardly when the blades move upwardly. The lower ends of the blades 43 are guided and maintained in spaced relation by a comb bracket 75 secured to the frame side blades 46, 47 by screws 76. The bracket 75 is formed with comb fingers 77 and intervening. slots at letter spacing intervals. To the rear ofthe fingers 77 and slots is a ledge 78- serving a purpose later to be explained.

When the typewriter is not in use and is not conditioned for operation the blades 43 are in the completely elevated positions shown in Figure 2 with the lower ends 69 of the cam slots 67 engaging or substantially engaging the part 49 of the shaft 48. Consequently the blades 43* will be in their rearmost' or retracted positions out of the path of any carriage mounted stops which may be set in operative positions as indicated at 7. The blades 43' will be held in these positions by a universal bar 79 which extends horizontally under the upper edges of By turning the adjusting plate 62 the i bar 45. The other arm 82 of the universal bar is pivoted at 87 to' an arm 88 also fast on the shaft 85. Fixed to the shaft is another arm 89 formed at its lower end with an ear part 90 which overlies an ear 91 on the rear end of a lever member 92 pivoted at 93 on the frame A as shown in Figure 1. The lever 92 has two spaced ears 94, 95 which straddle a movable ball end arm member 96.of a toggle switch 97 which controls an electric motor (not shown) providing power for operating parts of the tabulating mechanism and other typewriter parts. The front end 98 of the lever 92 may be connected to mechanism (not shown) for manually controlling the operation of the motor. Such mechanismm'ay be, for example, of the kind disclosed in the Hart et al. Patent No. 2,568,002 granted September 18, 1951.

When the lever 92 is in the position shown in Figures 1 and 2, the position it will occupy when the machine is not in use, the ear or blocking part 91 at the rear end of the lever 92 will be in engagement with the ear 90 on the arm 89 fast with the shaft 85. Consequently, the shaft 85 will be retained in the position shown in Figure 2 so as to hold the universal bail member 79, 81, 82 up, and maintain the blades 43 in their inoperative positions.

When the lever 92 is rocked clockwise to close the switch 97 and start the motor (not shown) the car 91 will move downwardly away from the ear 90 on the arm 89 so as to free the shaft 85 to partake of an initial partial rocking movement under the urgeof a tension spring 99 interposed between a stud 100 on the arm 82 and a bracket 101 on the crossbar 45. In this manner the universal bar 79 will be lowered to; the position shown in Figure 4 where it rests on a ledge 102 formed on a plate 103 secured to a t-abulating frame side plate 46 by a screw 104 and by a nut 105 at the left end of a shaft 106- which is mounted in apertures 107 in the frame side plates 46 and 47. The right end of the shaft 106 is secured to the right end plate 47 by a screw 108.

When the parts are in the positions shown in Figure 4 the universal bar 79 will no longer support the blades 43. The latter will have been moved downwardly a short distance until shoulders 109 formed in the rear edges of the blades come to rest on the ledge 78' near the front edge of the comb guide 75. The mechanism willthen be in readiness for effecting tabular operation of the carriage B. However, the blades 43, although conditioned for tabular operation, will still be held in retracted positions out of the path of operatively positioned stops 7' on the carriage.

The selection of a decimal tabulator blade 43 to be operated in accordance with the decimal or columnar position to which tabulation of the carriage is desired, and the positioning of the selected blade 43 in the path of the carriage mounted stop 7' is controlled by mechanism including a bank of ten decimal tabulator keys 110 spaced from each other in line across the front of the machine but at the rear of the regular or conventional typewriter keyboard. Each key, when depressed, raises the escapement rack 13 to free the carriage for .a tabulating run, and causes a corresponding blade 43 to move transversely to the direction of carriage travel to operative position. with its front edge disposed in the path of a carriage mounted stop 7'. Thus if the next to the leftmost key 110 shown in Figure 11 is depressed, the next to the leftmost blade 43 will be moved to operative position, and the carriage will be tabulated to position for typing in the units column. If the second from the leftmost key 110 shown in Figure 11 is depressed, the second from the leftmost blade 43 will be moved to operative position, and the carriage will be tabulated to the position for typing in the tens column, and so on.

Each of the keys 110 is formed with a shank 111 which extends through a slot 112- in a front guide plate 113 carried by the main frame. Upper and lower shoulders 114, 115 on the'key shanks are engageable" with the upper and lower edges of the guide plate 113 for limiting movement of the keys 110. The lower end of each key shank 111 is forked at 116 to receive a pin 117 on an arm 118 extending rearwardly from a bail 119 mounted to rock freely on a shaft 120 supported by the main frame A. Another arm 121 forming part of each bail 119 is pivoted at 122 to the front end of a link 123 the rear end of which is pivoted at 124 to an arm 125 pivoted on a cross shaft 126 supported on a main frame cross bar 127. A link 128 is pivoted at 129 to the arm 125 and is pivoted at its rear end at 130 to a lever 131 which is mounted to rock on the shaft 106 previously referred to. A spring 132 interposed between an arm 133 of the lever 131 and an ear 134 on the associated stop blade 43 urges the lever 131 counterclockwise as viewed in Figure 2 against a limit stop provided by the bottom edge of the comb guide 75.

When a selected key 110 is depressed the associated bail 119 is rocked clockwise so as to move the links 123 and 128 forwardly, and thus to rock the operation initiating lever 131 clockwise, causing a nose 135 on the lever 131 to push forwardly against a nose 136 on the associated blade 43 so as to move the blade relatively forwardly and disengage its shoulder 109 from the ledge or stop 78 on the comb guide 75. Forward movement of the selected blade 43 pushes the universal bar '79 off the ledge or shoulder stop 102, and thus frees the bar 79 from the restraint of the releasable retaining means comprising the stop 102, and enables the bar 79 to be pulled further downwardly by the spring 99, causing the arms 84 and 88 and the shaft 85 to be rocked clockwise. This rocking of the shaft 85 initiates operation of a power setting device for moving the universal bar 79 and selected blade 43 further downwardly to the operative positions shown in Figure 6.

The power setting mechanism includes a rear extension 137 on the arm 88 equipped at its end with a roller 138 co-operable with a cam lever 139 pivoted on an adjustable eccentric bearing 140 secured by a screw 141 to a post 142 mounted on the side plate 46. A heavy power tension spring 143 is connected at one end at 144 to the cam lever 139, and is connected at its other end to an ear 145 on the bracket 101. The cam lever 139 is formed with a holding surface 146 and with a curved working surface 147 below the holding surface 146.

When the parts are in the positions shown in Figure 4, the roller 138 is in engagement with the holding surface 146 of the cam lever 139 so that the spring 143 is restrained and is ineffective for rocking the cam lever 139. However, when a key 110 is depressed so as to rock the associated lever 131 clockwise from its Figure 4 position, and the associated blade 43 consequently is displaced forwardly and then moved downwardly by the spring 99, the resultant clockwise movement of the shaft 85 and arm extension 137 will place the roller 138 on the arcuate working surface 147 of the cam arm 139. The power spring 143 will then rock the cam arm 139 clockwise so as to displace the roller 138 downwardly and rock the arm extension 137 and shaft 85 further clockwise. Thus, the spring powered operating means will move the universal bar 79 further downwardly which, in turn, will move the selected stop blade 43 further downwardly.

The further downward movement of the selected stop blade 43 under the urge of the power spring 143 is stopped when the parts reach the positions shown in Figure 6. For this purpose each blade 43 is formed with a thin part 148 having at its lower edge a shoulder 149 adapted to engage a stop in the form of a tooth 159 on a bar 151 secured by screws 151 to the end plates 46 and 47. The arrangement is such that when a selected blade 43 is moved from its Figure 4 position to its first operative position shown in Figure 6, the shoulder 149 on the blade will engage and be stopped by the associated tooth on the bar 151, thereby arresting the blade 43, the universal bar 79, and the associated parts including the shaft 85, in the positions shown in Figure 6.

Rocking of the shaft 85 by the power spring 143, as described above, also raises the escapement rack 13 so as to disconnect the carriage from the escapement pinion 19 and wheel 22, thereby to enable the carriage to perform a tabulating run. Mechanism for raising the escapement rack 13 includes an arm 152 secured to the shaft 85 and provided with a stud 153 which receives the forked lower end 154 of a link 155 pivoted at 156 on a rack bar lifting arm 157, pivoted at 158 on the escapement bracket 21. When the shaft 85 is rocked clockwise by the power spring 143, the arm 152 is rocked to push the link 15S upwardly and rock the lifting arm 157 so as to raise the bar 14 and disengage the rack 13 from the escapement pinion 19.

Considering the operation of the parts thus far explained, it will be observed that depression of the key 110 requires only a light manual effort sufficient to overcome the tension of the relatively weak spring 132 which normally maintains the lever 131 in its Figure 2 position. The power for rocking the shaft 85 and its associated parts to the positions shown in Figure 6, and the power for disengaging the escapement mechanism is provided by the spring 143. Consequently it is possible by exerting a light pressure on the key 110 to effect movements of the mechanism requiring the exertion of relatively greater force.

After the parts have been positioned as shown in Figure 6, the carriage, having been freed from the restraint of the escapement mechanism, will be moved to the left by the usual spring barrel (not shown) and draw band so as to perform a tabulating run. Near the end of the tabulating run a controlling stop 7', set in operative position on the carriage, will engage the projected blade 43 shown in Figure 6. The blade 43 will be moved parallel to the direction of carriage travel a short distance to the left as viewed in Figure 9, as will be permitted by yielding of the spring 60. Irrespective of which denominational blade 43 has been projected, all of the blades to the left of it will also be moved to the left through the intermediaries of the spacers 71. The shoulder 149 on the projected or operatively positioned blade 43 will be moved to the left of the tooth 150 on which it has been resting, thus freeing the blade for further downward movement under the urge of the power spring 143 and the associated cam mechanism, and also the spring 99. In this way the blade 43 will move downwardly until its thin part 148 is in or near the root of a slot in the toothed bar 151 as shown in Figure 7. However, the blade will not have moved downwardly far enough to move it out of the path of or out of contact with the carriage mounted stop 7. Instead the blade will be in a second operative position and will still restrain the carriage in its tabulated position. The downward movement of the blade 43 and the corresponding movements of the associated parts to their Figure 7 positions are limited by engagement of an arm 159 on the shaft 85 with the frame cross bar 45.

The movement of the blade 43 to its Figure 7 position is caused by rocking of the arm extension 137 by the power cam mechanism and, accordingly, the shaft 85 is rocked clockwise so as concomitantly to rock an arm 160, fast on the shaft 85, to pull a link 161 rearwardly. As shown in Figures 2, 3 and 5 a floating cushion connection between the arm 160 and the link 161 includes a slot 162 in the arm 160 for adjustably mounting an anchorage 163 secured to the arm 16!) by a nut 164. The anchorage 163 has a stud 165. The link 161 is formed with a slot 166 which receives for sliding movements the central bearing part 167 of the anchorage 163. Connected to a stud 168 on the link 161 is a tension spring 169 extending through a sleeve 170 abutting against the stud 163, the spring 169 also being connected to the stud 165. A compression spring 171 is interposed between the sleeve 170 and the stud 165.

The link 161 is adapted to be pulled forwardly by power mechanism, described hereinafter, for effecting a resetting of the tabulating blade 43 and associated parts to the positions shown in Figure 4. The transmission of effort from the link 161 to the lever 160 is cushioned. by the spring 169 until the rear end of the slot 166 engages the bearing part 167 of the anchorage 163 on the arm 160. When the lever 160 is rocked counterclockwise through this cushioned connection, the shaft 85 and the other parts thereon will be rocked correspondingly. Rocking of the extension 137 of the arm 88 will reset the power cam 139 in its Figure 2 position. Rocking of the arms 84and 88 will lift the arms 81 and 82 and the universal bar 79 so as to raise the blade 43 from its Figure 7 position, thereby enabling the associated spring 132 to pull the bottom end of the blade rearwardly to-position its shoulder 109 on the ledge 78 as shown in Figure. 4'. The counterclockwise rocking of the shaft 85 audits arm 152 will also reset the escapement rack 13 so that it will re-engage the pinion 19 before the blade 32 is moved out. of contact with the stop 7'.

The cushioning and lost motion connection between pull link161 and arm 160 serves not only to provide for shock-free operation, but also to cause a time lag or delay between engagement of the carriage mounted stop 7 with the projected blade 43, and returning of the parts to their normal positions in which control of the carriage is taken over by the escapement mechanism. This time interval or lag Will permit the carriage to. return from any rebounded position so as to be stationary with its stop 7 pressing against the blade 43 before the escapement mechanism is re-engaged. Consequently proper registration of the escapementrack 83 with the pinion 19 and consequent proper positioning of the carriage in the tabulated position will be assured.

Operation of any one of the decimal tabulator keys 110 causes operation of the tabulating mechanism 4 in the manner described above, the onlydifier ence being'that different keys 110 control different blades 43. Blades 43 which have not been conditioned for operation by depressing of associated keys 1'10 remain in the positions shown in Figure 4 throughout tabulating operations, the inactive blades being retained in their Figure 4 positions by resting of their shoulders 109 on the ledge 78 of the comb guide 75. When one blade 43 is initially rocked forwardly or clockwise by rocking of the associated lever 131, the universal bar 79 will be moved forwardly sufficiently to displace it from the slots 80 in the other blades 43. Consequently, the universal bar 79 can move vertically without being restrained-by and without causing movement of those of the blades 43' which have not been selected for operation.

It is desirable at times to perform so-called regular tabulating operations, that is tabulation of the carriage to a position determined by a single frame mounted tabular stop, as in machines equipped with a siugletabular key but not equipped with a denominationalor ten key decimal tabulator mechanism. Such tabulating control may be effected by using consistently any one of the keys 110, as for example the leftmost key. However, many operators prefer, whennot performing denominational tabulating operations, to use the more standard or conventional tabulating key shown at 172 in Figure 1. The key 172 is pivoted at 173 on a frame cross bar 174 and is provided with a fixed depending finger 175 disposed in front of an ear 176 on apart 177' secured to the right end of the shaft 120. Secured to the left end of the shaft 120 is an arm 178 provided with an car 179 which extends across the arm 121. on the leftmost bail part 119. A coil spring 180 is hooked at 181. under the frame A and is hooked at 182 on the part 177 for normalizing or normally maintaining the shaft 120 in the position shown in Figure 1. When the key 172 is depressed, the finger 175 rocks the part 177 and shaft 120 clockwise, causing the arm 178 to rock so that its ear 179 will press against the arm 121 on the leftmost, bail part 119. This will rockthe associated arm. 121 counterclockwise so as to pull on. its

- tabulating run of the carriage is initiated.

Figure 3.

10 associated link 123 and thereby effect a tabulating operation, including the projection of the leftmost stop blade 43 to its operative position for arresting the carriage and, subsequently, returning of the parts to their normal positions in the same manner as though the operation had been effected by depression of the leftmost key 110.

It is desirable that'the center stop 23 and the line lock lever 25 carried by the center stop be moved out of the path of the margin stops when a tabulating operation is being performed. Otherwise, if the right margin stop 28 should be positioned inside of, i. e., to the left of, a tabulator stop 7 set in operative position, the center stop would be engaged by the margin stop 28 and the carriage would be arrested before its intended tabulating run had been completed. It is, of course, important that the tabulating run he completed, firstly, so as to bring the carriage to its desired position, and secondly, so as to insure that the operatively positioned stop blade 43 will be returned to its normal position. Otherwise, if the carriage were to be returned manually, any stop 7 operatively set on the carriage to the left of the operatively positioned blade 43 would strike the on its left side with consequent danger of damaging the parts. Accordingly, mechanism is provided for displacing the center stop to the rear and out of the path of the margin stops when a As shown in Figures 2 and 3, the arm 160 on the shaft has an extension 183 equipped with a roller 184 positioned in front of a lip 185 on a lever 186 pivoted at 187 on the frame cross bar 45. The lever 186 is providedwith an ear 188 extending behind and in contact with a projection 189 on the center stop 23.

'In operation, when the shaft 85 is rocked clockwise to cause a carriage tabulating run, the extension 183 of the arm causes the roller 184 to prws against the lip so as to rock the lever 186 counterclockwise as viewed in The car 188 on the lever 186 will then press against the projection 189 on the center stop 23 so as to rock the latter clockwise, as viewed in Figure 2, about its pivot 24, thereby moving the upper end of the center stop and the line lock lever blade 27 to the rear of and out of the path of the right margin stop 28. Thus the margin stop will be permitted to pass the line lock lever blade 27 and the center stop 23, and to move to the left of these parts so that the carriage will continue to travel until it is arrested by engagement of the stop 7 with the operatively positioned stop blade 43.

The power mechanism for pulling the link 161 forwardly to effect resetting of the tabulating mechanism in the manner previously described includes a continuously rotating driver'member, in the form shown a toothed or fluted snatch roll 197 driven in the direction of the arrow a in Figure 1 by the electric motor (not shown). The front end of the link 161 is formed with a row of teeth 198 normally held out of'engagement with the snatch roll 197 by a spring 199 attached to the link 161 at 200 and to a stud 201 on the main frame side wall. Normally the upper sloping front edge of the link 161 is urged into contact with a roller 202 journalled on a bracket 203 mounted on the main frame and serving also to support a ribbon spool shaft 204-. A depending portion 205 of the bracket 203 is slotted to provide a guide for the link 161 in its performance of fore-and-aft movements. The link 161 is formed with a substantially horizontal operating surface portion 206 normally disposed below and in front of the roller 2.02.

When the link 161 is moved rearwardly in consequence of movement of the shaft 85 and other parts to the positions shown in Figure 7, the link surface 206 engages the roller 202 whereby, due to the relative inclination of the surface. 206 to the line of movement of the link, the link front end will be cammed relatively downwardly so that the foremost tooth or teeth 198 on the link will engage the teeth on the rotating snatch roll 197. The snatch roll will thendrive the link I61 forwarly, thereby rocking the shaft 85 counterclockwise so as to reset the tabulating mechanism parts in the positions shown in Figure 4 in which they will be latched by engagement of the universal bar 79 with the ledge 102. The arrangement is such that when the tabulating mechanism has been restored to its Figure 4 condition the teeth 198 on the link 161 will be thrown clear of the snatch roll 197, enabling the spring 199 to lift the link 161 and return it to the position shown in Figure l in which it is again in contact with the roller 202. The time required for moving the link 161 rearwardly sufficiently to effect operative engagement of the link teeth 198 with the snatch roll 197 increases the interval or time delay between engagement of the stop 7' with the blade 43 and the resetting or retraction of the blade 43 and re-engagement of the escapement mechanism. Consequently ample time is provided to enable the carriage to become stationary following any rebounding action before the carriage is restored to the control of the escapement mechanism.

The construction shown as embodying the invention in a preferred form may be used safely and advantageously in power driven typewriters including mechanism for returning the carriage to line starting position by power supplied by the electric motor (not shown). When used in association with such power operated carriage returning mechanism it is desirable that any tabulating blade 43 which is set in operative position be restored automatically to its normal or retracted position when the carriage return mechanism is operated, for example in the event the carriage return key is depressed erroneously during the performance of a carriage tabulating run. Otherwise, an operatively positioned stop 7' to the left of a projected stop blade 43 would strike the latter on its left side during carriage return movement with consequent danger of damaging the parts. In order to avoid this difiiculty machines embodying the present invention may include mechanism for coordinating the operation of the carriage return mechanism and the tabulating mechanism.

The carriage return mechanism itself may be similar to that shown in the patent to Henry J. Hart No. 2,567,937 issued September 18, 1951. Only so much of this mechanism as is considered necessary to an understanding of the present invention is disclosed. It includes a carriage return clutch operating link 207 the front part of which is pivoted at 208 to a lever 209 mounted to rock on the shaft 126. The rear end of the link 207 is connected to a clutch or clutch operating mechanism of the kind shown in the Hart Patent No. 2,567,937.

Power mechanism, generally designated D, for operating the lever 209 and link 207 to efiect a carriage return movement includes a driving element, which operates continuously, and controllable driving connections, which normally are inoperative or ineffective, but which may be conditioned by the operator to effect operative driving connection between the continuously moving driving member and the pull link 207. The driver is constituted by a continuously rotating element, more particularly the toothed snatch roll 197 previously referred to.

The means for transmitting drive from the driver 197 to the link 207 includes an actuator 210 pivoted as at 211 to the lever 209. The actuator has a forwardly extending part 212 projecting under an abutment or guide plate 213 mounted on the frame A. A spring 214, interposed between the front end of the actuator 210 and an anchor plate 215, yieldably urges the actuator to rock clockwise, and thus normally maintains the actuator in the position shown in Figure 1 with its front end part 212 bearing against the abutment or guide plate 213. Another abutment 215 is disposed below the abutment 213, and is slotted to receive and guide the lower extremity of the actuator part 212 for fore-and-aft movements.

In order to apply a power impulse to the link 207, the

actuator 210 is operatively but indirectly connected to the driving member 197, the actuator itself never engaging the driving member. Mechanism for bringing about the operative connection of the actuator element 210 to the member 197, includes an interponent pawl or coupler 216, pivoted as at 217 on the actuator. A spring 218, anchored to the actuator 210 and connected to the pawl part 216, biases or urges the latter to rock clockwise so as to move its nose 219 into transient engagement with the snatch roll 197. Normally, the pawl is maintained out of engagement with the snatch roll by the restraining action of a control element or trigger 220 which is pivoted as at 221 on the actuator 210. In the normal position of the trigger, its rear end 222 engages a holding surface 223 on the pawl so as to prevent the spring 218 from rocking the pawl 216 into drivetransmitting engagement with the driving member 197. The pawl 216 is formed with an inclined resetter cam face 224 which is located just below the holding surface 223, and which is acted upon by the trigger for rocking the pawl counterclockwise, and thus resetting it in normal, inoperative position.

Operator controlled means is provided for bringing about operative driving connection between the driver 197 and the actuator 210. This means includes a manually operable carriage return key 225 pivoted at 173 on the frame A. The key 225 has an upward projection 226 disposed behind an arm 227 of an operating lever 228, pivoted as at 229 on a frame-mounted cross bar 230. The lever 228 has another arm 231 on which a limber dog or flipper 232 is pivoted at 233. A spring 234 urges the limber dog 232 to rock clockwise to retain it yieldably in its normal position of rest against a limit stop 235. The dog 232 can swing counterclockwise from the position shown in Figure 1, but cannot move clockwise from this position. A returning spring 236, interposed between the carriage return key 225 and a short arm 237 on the lever 228, yieldably holds the lever 228 and the carriage return key 225 in their normal positions. In the normal positions of the parts, the lower end of the limber dog 232 overlies a contact ear 238 on the actuator 210.

In operation, when the carriage return key 225 is depressed, the lever 228 is rocked clockwise to cause the flipper 232 to push the actuator 210 downwardly to an initial extent sufiicient to bring the trigger 220 into engagement with the abutment 215. This causes the trigger to be rocked clockwise about its pivot 221, so as to release the pawl 216, which is then moved by the spring 218 into engagement with the snatch roll 197. The snatch roll then drives the pawl 216 and actuator 210 as a unit so as to rock the lever 209 and operate the link 207. When the pawl 216 is cast off from engagement with the snatch roll 197, the spring 214 lifts the actuator 210 to bring the trigger 220 into engagement with the upper, trigger-resetting abutment 213. This causes the trigger 220 to be rocked counterclockwise, so as to move its end 222 against the resetting cam face 224 of the pawl 216, thereby restoring the latter to its inactive position. The parts of the power mechanism will then be returned toward their normal positions by a spring 239 interposed between a rearwardly extending arm 2.40 on the lever 209 and the lower part of a bracket 241 fixed to the frame cross bar 127. The lever 209 is provided with a heel 242 engageable with the upper part of the bracket 241 for limiting the return movement of the lever 209 and the connected parts to their normal positions under the urge of the spring 239.

Means are provided for adjusting or varying the amount of driving impulse generated by the power mechanism. This variation or adjustment is effected by variably limiting the extent to which the actuator pawl nose 219 enters a tooth interspace on the snatch roll 197 under the urge of the spring 218 when the restraint of the trigger 220 on the pawl 216 is discontinued. In the form shown,

13 the actuator 210 is provided with a downwardly extending stop element or finger 243 which is disposed in front of and normally out of contact with a downwardly extending stop part, heel, or finger 244 on the pawl 216. When the pawl 216 is rocked clockwise by the spring 218 so as to move the pawl nose 219 into a snatch roll tooth interspace, the pawl stop 244 moves toward the actuator stop 243, which may be so positioned as to be engaged by the stop 244 to arrest rocking of the pawl 216 before the tooth 219 moves to the root of the snatch roll tooth interspace. By variably positioning one of the stops 243, 244-, e. g., by bending the stop 243 towards or away from the stop 244, the extent to which the pawl tooth 219 enters the tooth interspace can be varied. Consequently, the angle through which the snatch roll 197 rotates while in contact with the pawl, which determines the amount of.

driving of the pawl 216 and actuator'210 by the snatch roll 197, can be varied.

In typewriters or like machines in which all or some of the instrumentalities to be operated, e. g., type bars, carriage return mechanism, tabulating mechanism, and escapement mechanism, are operated by power, it may be desirable to provide means for varying collectively the extent of driving of the several actuator pawls corresponding to the pawl 216 and associated with the other mechanisms referred to. This may be accomplished by providing a knock off bar 245 mounted on the main frame so as to extend under the front ends of all of the actuators corresponding to the actuator 210 shown in Figure 1.

Any suitable means (not shown) may be provided for adjustably tilting or otherwise variably positioning the knock off bar 245 so that it will be engaged by the lower ends of the actuators to control the timing of disengagement of the associated actuator pawls from the snatch roll.

Normally the parts of the carriage returning mechanism will be in the positions shown in Figure 1. In order to effect a carriage returning operation the key 225 is depressed so as to rock the lever 228 and move the dog 232 against the car 238 on the actuator 210, thus moving the latter downwardly about its pivot 211. The trigger 212 will then engage the abutment 215, whereby the trigger will be rocked about its pivot 221 to enable the pawl 216 to be rocked by its spring 218 to effect engagement of the pawl nose 219 with the snatch roll 197. The actuator 210 is then driven forwardly in the manner previously described so as to rock the lever 209 and move the link 207 forwardly to effect engagement of the carriage returning clutch in the manner disclosed in the Hart Patent No. 2,567,937.

If a stop blade 43 should be set in operative position and the carriage should be performing a tabulating run, and if the carriage returning key 225 should then be depressed, an extension 246 on the lever arm 231 would move downwardly so as to engage a pin 247' on the front end of the link 161, at that time in its rearward position. The lever extension 246 will act through the. pin247 to move the link teeth 198 into engagement with the snatch roll 1197, thereby causing the link 161 immediately to be moved forwardly to restore the tabulating mechanism to; its normal condition as shown in Figure 4 in which all of the stop blades 43 will be retracted and out of the path of any stops on the returning carriage. Normally the lever extension 246 and pin 247 are so relatively positioned' as not to engage each other when the carriage return key 225 is depressed, so that the carriage returning mechanism may be operated without interference by the pin'247 and other parts of the tabulating mechanism when the latter is not being operated. However, during a tabulating operation the link 161 will be moved rearwardly' so as to position the pin 247 close to. the extension 246. Therefore depressive movement of the carriage return key 225 will cause engagement of the extension 246 with the pm 247 and, as explained above, immediate returning of the tabulating mechanism to its normalcondition.

In Figure 1 there is shown an arm 248 secured to: a shaft 249 mounted to rock on a bracket 250 carried by the frame cross bar 127. The arm 248 is in the path of an car 251 on the carriage return operating link 207. When the link 207 moves forwardly to effect a carriage return operation the car 251 rocks the arm 248 and shaft 249. The latter is connected to key interlocking mecha nism which is not shown but which may be of the kind disclosed in the copending application of John F. Kloski et al. Serial No. 209,619, filed February 6, 1951, now Patent No. 2,633,966, granted April 7, 1953. The interlocking mechanism prevents undesirable conjoint operation of certain keys and their associated mechanisms.

Referring again to the construction of the tabulating mechanism, it is desirable that its operating parts be nicely adjustable in order that most eflicient timing and operation may be obtained. As previously described, the shaft 48 may be turned so that, by the eccentricity of its central part 49, the shaft part 49 may variably be positioned to limit exactly the retracted and projected positions of the stop blades 43. Most efficient functioning of the power cam lever 139 may be obtained by adjusting its eccentric supporting bearing 140. Most effective co-operation of the rockable arm 160 and the pull link 161 may be obtained by adjusting the anchorage or bearing 163, 167 so as to obtain the desired lost motion between the parts 160 and 161 and hence the most effective time delay interval between engagement of the stops 7' and 43 and resetting of the stops 43 to retracted positions.

Operation a typical operating cycle may assist in understanding the invention.

When the machine is not in use the parts will be in the positions shown in Figures 1 and 2, with the car 91 on the switch operating lever 92 engaging the ear 90 on the arm 89 so as to immobilize the shaft and the several arms secured to the shaft. Thus the ears 90 and 91, and the associated parts, serve as an interlocking means for preventing operation of the spring powered operating means including the cam lever 139 when the switch 97 is open, that is when the machine is not in use. In this condition of the mechanism, the noses 135 on the levers 131 will be disposed below the noses 136 on the blades 43 so that if a key is depressed its associated lever 131 will be rocked idly with its nose passing under the associated nose 136 without displacing the associated blade 43.

In order to condition the machine for operation, the switch arm 92 is rocked clockwise to close the driver controlling switch device 97 and start the motor to drive the snatch roll 197. The ear 91 will move away from the ear 90 so as to free the shaft 85 for rocking, thereby enabling the spring 99 to move the universal bar 79 downwardly to its Figure 4 position as determined by engagement of the bar 79 with the ledge 102. Concurrently, the springs 132 will move all of the stop blades 43 downwardly until their shoulders 109 rest on the stop or ledge 78 of the guide 75. The noses 136 at the lower ends of the blades 43 will then overlap and be positioned in front of the noses 135 on the associated levers 131. The mechanism will then be in readiness for the performance of tabulating operations.

In order to tabulate the carriage to a selected decimal position, the selected key 110 is depressed so as to rock its associated bail 119 and move to its associated links 123-and 128 forwardly, thereby rocking the lever 131 of the tabulation effecting means clockwise. The nose 135' on the rocked lever 131 will push against the nose 136 on the associated blade 43 so as to move the latter forwardly to displace its shoulder 109- from the ledge 78 and so, also, as to displace the universal bar 79 from the retaining ledge 102. The spring 99 will then move the universal bar further downwardly to rock the shaft 85 and arm extension 137 clockwise, thereby placing the roller 138 in engagement with the arcuate working surface 147 of the cam lever 139. The lever 139 will then be rocked by its spring 143 so as to rock the shaft 85 and effect movement of the parts to the positions shown in Figure 6 and so, also, as to release the escapement mechanism by raising of the link 155 and rocking of the escapement lifting lever 157. The selected blade 43 will then be positioned in the path of the operatively set stop 7' and the carriage will be free to perform a tabulating run. Rocking of the shaft 85 and the lever 183 will have rocked the lever 186 to move the center stop 23 and line lock lever 27 out of the path of the margin stop 28.

When the operatively set stop 7 strikes the operatively positioned stop blade 43 with the parts in their Figure 6 positions, the blade 43 will be moved to the left as viewed in Figure 9 so as to permit its shoulder 149 to drop off the tooth 150 on the bar 151, thus permitting the cam lever 139 to rock the shaft 85 further clockwise so as to position the parts as shown in Figure 7 with the blade 43 still in contact with the stop 7' and the escapement mechanism still disengaged.

Movement of the shaft 85 and the arm 160 while the blade 43 is being lowered to its Figure 7 position will pull the link 161 rearwardly so that, by co-operation of the link surface 206 with the roller 202, the link teeth 198 will respond to rocking of the shaft 85 by engaging the snatch roll 197. The link 161 will then be driven forwardly by the snatch roll so as to rock the arm 160 and shaft 85 counterclockwise to restore the tabulating mechanism to the condition shown in Figure 4 with the blade 43 again latched by engagement of its shoulder 109 with the ledge 78, and with the universal bar 79 again latched on the ledge 102.

Inasmuch as the tabulating mechanism is operated entirely by power supplied by the spring 143 and by the snatch roll 197 as soon as a blade 43 has been dislodged from the ledge 78 and the universal bar 79 has been dislodged from the ledge 102, only a momentary depression of a key 110 is required to effect a complete operating cycle. Thus it is not necessary for a key 110 or the conventional tabulating key 172 to be held depressed throughout the performance of a tabulating operation.

If, during a tabulating run of the carriage, the carriage return key 225 should be depressed inadvertently so as to cause the carriage to move in the return direction, the co-operation of the lever extension 24-6 and the pin 247 will cause immediate resetting of the selected blade 43 to its normal position out of the path of any carriage mounted stop 7 to the left of the blade 43.

The mechanism disclosed for the purpose of illustrating the invention embodies the invention in a preferred form, but it is intended that the disclosed mechanism be illustrative rather than definitive of the invention. The invention is defined in the appended claims.

I claim:

1. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a plurality of tabular stop devices; means mounting said stop devices on the other of said elements for movements to inoperative positions in which said stop devices are not engageable with said tabular stop means and for movements respectively to operative positions in which an operatively positioned stop device is engageable with said tabular stop means for arresting said carriage element at the end of a tabulating run; spring powered operating means for urging said stop devices to move away from their inoperative positions and being operable for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; releasable means normally retaining said spring powered operating means in inactive position; operation initiating means for releasing said retaining means to enable said spring powered operating means to move a selected one of said stop devices away from its inoperative position in one direction; cam means including a cam part on each of said stop devices operable in response to movement of the selected stop device in said one direction for moving the selected stop device transversely to said one direction and into its operative position, whereby said tabular stop means and said selected stop device will engage one another to arrest said carriage element in a predetermined tabular position; and means for restoring said feed controlling mechanism to its normal condition and for returning said selected stop device to its inoperative position.

2. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a plurality of tabular stop devices; means mounting said stop devices on the other of said elements for movements to inoperative positions in which said stop devices are not engageable With said tabular stop means and for movements respectively to operative positions in which an operatively positioned stop device is engageable with said tabular stop means for arresting said carriage element at the end of a tabulating run; spring powered operating means for urging said stop devices to move away from their inoperative positions and being operable for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; releasable means normally retaining said spring powered operating means in inactive position; operation initiating means for releasing said retaining means to enable said spring powered operating means to move a selected one of said stop devices away from its inoperative position in one direction; cam means including a cam part on each of said stop devices operable in response to movement of the selected stop device in said one direction for moving the selected stop device transversely to said one direction and into its operative position, whereby said tabular stop means and said selected stop device will engage one another to arrest said carriage element in a predetermined tabular position; a power operated driver; and means operable by said driver for restoring said feed controlling mechanism to its normal condition and for returning said selected stop device to its inoperative position.

3. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a plurality of tabular stop devices; means mounting said stop devices on the other of said elements for movements to inoperative positions in which said stop devices are not engageable with said tabular stop means and for movements respectively to operative positions in which an operatively positioned stop device is engageable with said tabular stop means for arresting said carriage element at the end of a tabulating run; spring powered :operating means for urging said stop devices to move away from their inoperative positions and being operable for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; releasable means normally retaining said spring powered operating means in inactive position; operation initiating means for releasing said retaining means to enable said spring powered operating means to move a selected one of said stop devices away from its in operative position in one direction; cam means including a cam part on each of said stop devices operable in response to movement of the selected stop device in said one direction for moving the selected stop device transversely to said one direction and into its operative position, whereby said tabular stop means and said selected stop device will engage one another to arrest said carriage element in a predetermined tabular position; a power operable driver; a switch selectively settable for causing operation of said driver and alternatively for causing said driver to remain at rest; means movable by said driver when it is operating for restoring said feed controlling mechanism to its normal condition and for returning said selected stop device to its inoperative position; and interlocking means effective, when said switch is set for causing said driver to remain at rest, for preventing operation of said spring powcred operating means.

4. in a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for eifecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a plurality of tabular stop devices; means mounting said stop devices on the other of said elements for movements to inoperative positions in which said stop devices are not engageable with said tabular stop means and for movements respectively to operative positions in which an operatively positioned stop device is engageable with said tabular stop means for arresting said carriage element at the end of a tabulating run; tabulation effecting means for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element and for moving a selected one of said stop devices from its inoperative position to its operative position whereby said tabular stop means and said selected stop device will engage one another to arrest said carriage element in a predetermined tabular position; a power operable driver; a switch including a movable switch member settable selectively in two positions respectively for causing operation of said driver and alternatively for causing said driver to remain at rest; means movable by said driver when it is operating for restoring said feed controlling mechanism to its normal condition and for returning said selected stop device to its inoperative position; a switch operating lever; three spaced ears on said switch operating lever, two of said ears being disposed on opposite sides of and being engageable with said movable switch member whereby rocking of said switch operating lever in opposite directions will set said movable switch member selectively in its two positions; and a part connected to said tabulation effecting means and being engageable with the third of said ears, when said movable switch member is in its position for causing said driver to remain at rest, for preventing operation of said tabulation efiecting means.

5. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally con- 18 ditioned' for eflr'ecting incremental letter spacing mo've ments of said carriage element and being conditionable for enabling tabulating runs of said carriage element un interruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; aplu= rality of tabular stop devices; means mounting said stop devices on the other of said elements for move= ments to inoperative positions in which said stop devices are not engagebale with said tabular stop means and'for movements respectively to operative positions in which an operatively positioned stop device is'engageable with said tabular stop means for arresting said carriage element at the end of a tabulating run; tabulation effecting means for conditioning said feed controlling mechanism for en-' abling a tabulating run of said carriage element and for moving a selected one of said stop devices from its inoperative position to its operative position whereby said tabular stop means and said selected stop device will en gage one another to arrestsaid carriage element in a predetermined tabular position; power operable resetting means for restoring said feed controlling mechanism to normal condition and for returning said selected stop to its inoperative position; a switch including a movable switch member settable to off position for preventing operation of said power operable resetting means and to on position for enabling operation of said power operable resetting means; a switch operating lever; three spaced ears on said switch operating lever, two of'said ears being disposed on opposite sides of and being engageable with said movable switch member whereby rocking of said switch operating lever in opposite directions will set said movable switch member selectively in'its two posi-' tions; and a part connected to said tabulation eflecting means and being engageable with the third of said ears whensaid movable switch member is in its off position for preventing operation of said tabulation effecting means.

6. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for efiecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said stop device on the other of said elements for movement to an inoperative position in which said stop device is not engageable with said' tabular stop means and for movement to an operative position in which said stop device is engageable with said tabular stop means for arresting the carriage ele ment at the end of a tabulating run; spring powered operating means for urging said stop device to move away from its operative position in one direction and for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; releasable means normally retaining said spring powered operating means in inoperative position; operation initiating means for releasing said retaining means to enable said spring powered operating means to move said stop device away from its inoperative position in said one direction; cam means including a cam part on said stop device operablein response to movement of said stop device in said one direction for moving said stop device transversely to said one direction and into its operative position whereby said tabular stop means and said stop device will engage one another to arrest said carriage element in a predetermined tabular position; and means for restoring said feed controlling mechanism to its normal condition and for returning said stop device to its inoperative position.

7. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements to move both transversely and parallel to the direction of travel of said carriage element, said tabular stop device normally being in an inoperative position in which it is not engageable with said tabular stop means but being movable from said inoperative position transversely to the direction of travel of said carriage element successively to first and second operative positions in each of which it is engageable with said tabular stop means for arresting said carriage element at the end of a tabulating min; a first stop for holding said tabular stop device in its inoperative position: means for effecting relative displacement of said tabular stop device and said first stop to release said tabular stop device for movement from its inoperative position; spring means for then moving said tabular stop device from its inoperative position transversely to the direction of carriage travel to a first operative position and for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; a second stop engageable with said tabular stop device when the latter has been moved to its said first operative position for temporarily stopping said tabular stop device in its said first operative position in which it is engageable with said tabular stop means as said carriage element approaches the end of its tabulating run, whereby said tabular stop device is moved parallel to the direction of carriage travel and is disengaged from said second stop, and said spring means is enabled to move said tabular stop device further transversely to the direction of carriage travel; means for restoring said tabular stop device to its inoperative position and for restoring said feed controlling mechanism to its normal condition; and means responsive to said further transverse movement of said tabular stop device after disengagement thereof from said second stop for operating said restoring means.

8. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements to move both transversely and parallel to the direction of travel of said carriage element, said tabular stop device normally being in an inoperative position in which it is not engageable with said tabular stop means but being movable from said inoperative position transversely to the direction of travel of said carriage element successively to first and second operative positions in each of which it is engageable with said tabular stop means for arresting said carriage element at the end of a tabulating run; a first stop for holding said tabular stop device in its inoperative position; means for effecting relative displacement of said tabular stop device and said first stop to release said tabular stop device for movement from its inoperative position; spring means for then moving said tabular stop device from its inoperative position transversely to the direction of carriage travel to a first operative position and for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; a second stop engagcable with said tabular stop device when the latter has been moved to its said first operative position for temporarily stopping said tabular stop device in its said first operative position in which it is engageable with said tabular stop means as said carriage element approaches the end of its tabulating run, whereby said tabular stop device is moved parallel to the direction of carriage travel and is disengaged from said second stop, and said spring means is enabled to move said tabular stop device further transversely to the direction of carriage travel; a power operable driver; a switch settable selectively in two positions respectively for causing operation of said driver and alternatively for causing said driver to remain at rest; restoring means movable by said driver when it is operating for restoring said feed controlling mechanism to its normal condition and for restoring said stop device to its inoperative position; and interlocking means between said switch and said displacement effecting means and being effective, when said switch is set for causing said driver to remain at rest, for blocking operation of said displacement effecting means.

9. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements to move both transversely and parallel to the direction of travel of said carriage element, said tabular stop device normally being in an inoperative position in which it is not engageable with said tabular stop means but being movable from said inoperative position transversely to the direction of travel of said carriage element successively to first and second operative positions in each of which it is engageable with said tabular stop means for arresting said carriage element at the end of a tabulating run; a first stop for holding said tabular stop device in its inoperative position; means for effecting relative displacement of said tabular stop device and said first stop to release said tabular stop device for movement from its inoperative position; spring means for then moving said tabular stop device from its inoperative position transversely to the direction of carriage travel to a first operative position and for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; a second stop engageable with said tabular stop device when the latter has been moved to its said first operative position for temporarily stopping said tabular stop device in its said first operative position in which it is engageable with said tabular stop means as said carriage element approaches the end of its tabulating run, whereby said tabular stop device is moved parallel to the direction of carriage travel and is disengaged from said second stop, and said spring means is enabled to move said tabular stop device further transversely to the direction of carriage travel; a power operable driver; a driver controlling device settable selectively in two positions respectively for causing operation of said driver and alternatively for causing said driver to remain at rest; restoring means movable by said driver when it is operating for restoring said feed controlling mechanism to its normal condition and for restoring said stop device to its inoperative position; means responsive to said movement of said stop device further transversely to the direction of carriage travel for causing said rcstoring means to be moved by said driver; and interloclo ing means between said driver controlling device and said displacement effecting means and being effective, when said driver controlling device is set for causing said driver 21 to remain at rest, for blocking operation of said displacement ettecting means.

10. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device formed with a cam comprising two end portions ofiset from each other transversely to the direction of carriage travel and a connecting portion between said end portions; means mounting said tabular stop device for movement on the other of said elements including a relatively stationary part on said other of said elements and engaging said cam; normally effective restraining means including a shoulder on said tabular stop device and a stop on said other of said elements normally engaged by said shoulder for holding said tabular stop device in inactive position in which it is not engageable with said tabular stop means and in which one end portion of said cam engages said relatively stationary part; spring means for urging said tabular stop device to move to position the other end portion of said cam in engagement with said relatively stationary part but normally being restrained by said restraining means; means for rendering said restraining means inefiective whereby to enable said spring means to move said tabular stop device and cause said cam and said relatively stationary part to cooperate to displace said tabular stop device transversely to the direction in which it is urged by said spring means and to an active position in which it is engageable with said tabular stop means; and means for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element.

11. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for efiecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular sto'p means on one of said ele ments; a tabular stop device formed with a cam comprising two end portions oftset from each other transversely to the direction of carriage travel and a connectingportion between said end portions; means mounting said tabular stop device for movement on the other of said elements including a relatively stationary part on said other of said elements and engaging said cam; normally effective restraining means-including a shoulder on said tabular stop device and a first stop on said other of said elements normally engaged by said shoulder for holding said tabular stop device in inactive position in which it is not engageable with said tabular stop means and in which one end portion of said cam engages said relatively stationary part; spring means for urging said tabular stop device to move to position the other end portion of said cam in engagement with said relatively stationary part but normally being restrained by said position in which it is engageable with said tabular stop means; a second stop for arresting said tabular stop device in' its said active position; means" for conditioning said feed controlling mechanism for enabling atabu'Iating run of said carriage element; and means responsive to engagement of said tabular stop means with said tabular stop device at the end of a tabulating run of said carriage element for restoring said feed controlling mechanism to normal condition and returning said tabular stop device to inoperative position.

12. in a typewriting or like machine, the combination of a frame element; a. carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements for movement from an inactive position in which it is not engageable with said tabular stop means to an active position in which it is engageable with said tabular stop means; a device engageable with said tabular stop device and actuatable for moving said tabular stop device to initiate its movement from inactive to active position; means including a key for actuating said actuatable device; means for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; and means other than said key for effecting a relative displacement between said actuatable device and said tabular stop device to so position them relatively as to prevent effective engagement of said two devices when said key is operated.

13. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for eifecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements for movement from an inactive position in which it is not engageable with said tabular stop means to an active position in which it is engageable with said tabular stop means; a device engageable with said tabular stop device and actuatable for moving said tabular stop device to initiate its movement from inactive to active position; means for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element; power operable means for restoring said feed controlling mechanism to normal condition and for returning said tabular stop device to inactive position; control means selectively settable for rendering said power operable means operable or inoperable; and means operable by said control means when the latter is set to render said power operable means inoperable for eifecting a relative displacement between said actuatable device and said tabular stop device to so position them as to prevent engagement of one with the other.

14. In a typewriting or like machine, the combination "of a frame element; a carriage element mounted on said tabular stop means to an active position in which it is engageable with said tabular stop means; operating means for moving said tabular stop device from its inactive position to its active position and for conditioning said feed controlling mechanism to enable a tabulating run of said carriage; a margin stop on one of said elements; a center stop on the other of said elements; means mounting one of said stops for displacement from a normal position in which it is engageable with the other of said stops to another position in which it is not engageable with said other of said stops; a lever for displacing said one of said stops from its said normal position to its said other position; and means operable by said operating means for actuating said lever.

15. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements for movement from an inactive position in which it is not engageable with said tabular stop means to an active position in which it is engageable with said tabular stop means; operating means for moving said tabular stop device from its inactive position to its active position and for conditioning said feed controlling mechanism to enable a tabulating run of said carriage; a margin stop on one of said elements; a center stop on the other of said elements; means mounting one of said stops for displacement from a normal position in which it is engageable with the other of said stops to another position in which it is not engageable with said other of said stops; a member for displacing said one of said stops from its said normal position to its said other position; an arm operable by said operating means; and a roller on said arm engageable with said member for actuating said member when said operating means is operated.

16. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabnlating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements for movement from an inactive position in which it is not engageable with said tabular stop means to an active position in which it is engageable with said tabular stop means; operating means for moving said tabular stop device from its inactive position to its active position and for conditioning said feed controlling mechanism to enable a tabulating run of said carriage; spring means for actuating said operating means; a power operable driver; and means normally disconnected from said driver but being connectable therewith for transmitting power to said operating means to return said tabular stop device to its inactive position and for restoring said feed controlling mechanism to normal condition against the urge of said spring means, said normally disconnected means including two adjacent parts and a spring cushion connection therebetween.

17. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements for movement from an inactive position in which it is not engageable with said tabular stop means to an active position in which it is engageable with said tabular stop means; operating means for moving said tabular stop device from its inactive position to its active position and for conditioning said feed controlling mechanism to enable a tabulating run of said carriage; spring means for actuating said operating means; a power operable driver; and means normally disconnected from said driver but being connectable therewith for transmitting power to said operating means to return said tabular stop device to its inactive position and for restoring said feed controlling mechanism to normal condition against the urge of said spring means, said normally disconnected means including two adjacent parts, a first spring tending to move said parts relatively to each other in one direction, and a second spring tending to move said parts relatively to each other in the opposite direction.

18. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tubular stop device on the other of said elements for movement from an inactive position in which it is not engageable with said tabular stop means to an active position in which it is engageable with said tabular stop means; operating means for moving said tabular stop device from its inactive position to its active position and for conditioning said feed controlling mechanism to enable a tabulating run of said carriage; a power operable driver; means normally disconnected from said driver but being connectable therewith for transmitting power to said operating means to return said tabular stop device to its inactive position and for restoring said feed controlling mechanism to normal condition; means responsive to engagement of said tabular stop means with said tabular stop device at the end of a tabulating run of said carriage element for connecting said normally disconnected means to said driver; other power operated means adapter, when activated, to eflfect power operated return travel of said carriage element; and means, operable independently of engagement of said tabular stop means with said tabular stop device and automatically when there are concurrent tabulating movement of said carriage element and activation of said other power operated means, for connecting said normally disconnected means to said driver.

19. In a typewriting or like machine, the combination of a frame element; a carriage element mounted 011 said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for effecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device; means mounting said tabular stop device on the other of said elements for movement from an inactive position in which it is not engageable with said tabular stop means to an active position in which it is engageable with said tabular stop means; operating means for moving said tabular stop device from its inactive position to its active position and for conditioning said feed controlling mechanism to enage a tabulating run of said carriage; a constantly rotating snatch roll; a toothed link connected to said operating means and normally being disengaged from said snatch roll; means operable in response to engagement of said tabular stop means with said tabular stop device at the end of a tabulating run of said carriage element for efiecting movement of said toothed link into engagement with said snatch roll whereby power is transmitted from said snatch roll to said operating means for returning said tabular stop device to inactive position and for restoring said feed controlling mechanism to normal condition; an actuator adapted to be connected to said snatch roll for effecting power operated return travel of said carriage element; a member for effecting connection of said actuator to said snatch roll; and means operable by said member during a tabulating movement of said carriage element, and independently of engagement of said tabular stop means with said tabular stop device, for effecting engagement of said toothed link with said snatch roll.

20. In a typewriting or like machine, the combination of a frame element; a carriage element mounted on said frame element for letter spacing and return travel; mechanism for driving the carriage element in the letter spacing direction; feed controlling mechanism normally conditioned for efiecting incremental letter spacing movements of said carriage element and being conditionable for enabling tabulating runs of said carriage element uninterruptedly through a plurality of letter spacing increments; tabular stop means on one of said elements; a tabular stop device formed with a cam comprising two end portions ofiset from each other transversely to the direction of carriage travel and a connecting portion between said end portions; means mounting said tabular stop device for movement on the other of said elements including a relatively stationary part on said other of said elements and engaging said cam; an eccentric device mounting said relatively stationary part for adjustment to vary the position of said tabular stop device relative to said tabular stop means; normally eflective restraining means including a shoulder on said tabular stop device and a stop on said other of said elements normally engaged by said shoulder for holding said tabular stop device in inactive position in which it is not engageable with said tabular stop means and in which one end portion of said cam engages said relatively stationary part; spring means for urging said tabular stop device to move to position the other end portion of said cam in engagement with said relatively stationary part but normally being restrained by said restraining means; means for rendering said restraining means ineffective whereby to enable said spring means to move said tabular stop device and cause said cam and said relatively stationary part to cooperate to displace said tabular stop device transversely to the direction in which it is urged by said spring means and to an active position in which it is engageable with said tabular stop means; and means for conditioning said feed controlling mechanism for enabling a tabulating run of said carriage element.

References Cited in the file of this patent UNITED STATES PATENTS 1,892,071 Myers et al Dec. 27, 1932 2,155,989 Helmond Apr. 25, 1939 2,185,742 Thompson Jan. 2, 1940 2,255,029 Tholstrup Sept. 2, 1941 2,384,060 Yaeger Sept. 4, 1945 2,655,245 Sagner Oct. 13, 1953

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