US1818860A - Typewriting machine - Google Patents

Description

Aug. 11,1931.

1.. c. MYERS 1,818,860

TYPEWRITING IACHINB Filed Nov. 7. 1929 3 Sheets-Sheet 1 ATTORNEYS Search Room Search R00 I97TYPEWR1TING MACHlNES Aug. 11, 1931. L. c. was

I'YPMITIIIO IACIIII F11! Nov. 7. 1929 3 ShOOtS-Shifl 3 v1. a ATTORNEYS,

l l r a wav BY Patented Aug. 11, 1931 UNITED STATES PATENT OFFICE LEWIS C. MYERS, OI FBEEPORT, NEW YORK, ASSIGNOB TO ROYAL TUEWRITEB COM- PANY, INC 0] NEW YORK, N. Y A CORPORATION 01' NEW YORK TYPEWBITING uacnnm Application filed lI'ovember 7, 1928. Serial In. 405,880.

This invention relates to new and useful improvements in typewriting machines generally, although more specifically to imrovements in tabulating mechanisms thereor.

The invention is particularly adapted for use in connection with Royal portable typewriters although from certain aspects the invention may be applied to typewriting machines of other ty es. In typewriting machines generally, an particularly in those of the portable type, the o crating parts must be necessarily positione in close compact relation as available working space is extremel limited.

There ore among the several objects of my invention are to provide a tabulating mechanism which will fit into a limited space and which will not interfere in any manner with the carriage shift frame or with any of the other operating parts of the machine, and to rovide a tabular stop in manner which wil permit of its ready adjustment along the tabular rack.

In the accompanying drawings:

Figure 1 is a view partly in side elevation and partly in section showing a typewriting machine embodying my invention,

Figure 2 is a rear elevation of such a machine, parts being omitted to better disclose my invention,

Fi re 3 is a detail rear elevation showing t e rocking frames to which the tabular rack and the feed rack are fixedly connected,

Figure 4 is a detail top plan view of the machine, parts being omitted to better disclose my invention,

Figure 5 is a right hand end elevation of the carriage,

Figure 6 is a left hand end elevation of the carriage,

Figure 7 is a plan view of a blank used in forming a tabular stop.

Figure 8 is an end elevation of a tabular sto l: igure 9 is a perspective view of a tabular stolp spring, 7

igure 10 is an elevation thereof, and

Figure 11 is a detail vertical sectional view showing the relation between the tabular rack and the combined lifting and stop lever.

In the accompanying drawings, I have i1- lustrated my invention as being applied to a Royal portable typewriting machine which includes a main frame A having a front wall 5, a rear wall 6, and side walls 7 and 8 res tively. The rear wall 6 is provided a ong its upper and lower edges with inturned flanges 9 and 10 respectively. Supported on the main frame A for substantially vertical movements in the usual manner is a shift frame B and movably mounted on this shift frame is a carriage C including a platen 11 and end walls 12 and 13 respectively. The carriage C is supported on the shift frame B through the medium of spaced upper rails 14, 14 and cooperating rails 15, 15, the former being fixed to the carriage and the latter being fixed to the shift frame. The carriage C is fed in a letter space direction by the usual spring drum l6 and escapement mechanism which includes an escapement pinion 17. The detail construction of the escapement mechanism is not shown as any ordinary escapement mechanism may be employed. Besides the escapement pinion 17, the escapement mechanism necessarily includes a feed rack 18 which is normally held in mesh with the pinion but is ada ted to be disengaged therefrom whenever t e tabular mec anism is thrown into operation or when it is desired to move the carriage in a letter space direction without employing the usual s acing key lever. In the present instance, t e pinion 17 and the feed rack 18 are located below the carriage and between the rails thereof. The feed rack 18 is fixedl connected at its ends to rocking frames and E which are in turn fulcrumed on alined pivots 19 and 20 supported on the end plates 12 and 13 respectively.

The swinging frame D consists of a 3- turned end or arm 27 which is fulcrumed on the pivot screw 19. The depending arm 21 of the swinging frame D has its lower end inturned as at 28 and the free end thereof is located in a slot 29 formed in the adjacent end of the feed rack 18.

The swinging frame E comprises a 2- armed lever which is fulcrumed on the pivot 20 and includes a depending arm 30 and a laterally and rearwardly extending arm 31. The depending arm 30 is provided with an inwardly extending portion or arm 32 which overlies the adjacent end of the feed rack 18 and is connected thereto by screws 33, 33. The rearwardly extending arm 31 is provided with a bent over lug 34 and a coil spring 35 is connected at one end to this lug and at its other end to a lug 36 fixed to the carriage C. This spring functions to yieldably retain the feed rack 18 in engagement with the escapementpinion 17. A tabular rack 37 is located in rear of the carriage and is attached to the swinging frames D and E. For this purpose one end of the tabular rack 37 is rigidly connected to the rearwardly extending arm 22 of the swinging frame D by means of a screw 38. The other end of the tabular rack 37 is fixedly connected by a screw 39 to a plate 40 attached by screws 41, 41 to the.rearwardly extending or lateral arm 31 of the swinging frame E. The plate 40 is provided with an upwardly extending arm 42 which terminates at its upper end in a finger piece 43. Thus upon depression of either finger piece 24 or 43 both rocking frames D and E will be simultaneously swung about their respective pivots and both the feed rack 18 and the tabular rack 37 will be swung in unison thereby moving the feed rack 18 toward and from or into and out of engagement with the escapement pinion 17.

The tabular rack 37 is provided on its inner face with a series of teeth 44 and mounted on said tabular rack for independent adjustments therealong is a plurality of tabular stops H. Each stop H is preferably formed from a single blank 45 of sheet metal. This blank is formed into rectangular or ring shaped member adapted to encircle or embrace the tabular rack, and includes a top wall 46, a bottom wall 47, an inner wall 48 and an outer wall 49. The distance between the top and bottom walls 46 and 47 is slightly greater than the height of the tabular rack so as to permit the stops H to be freely slid therealong. The distance, however. between the inner and outer walls 48 and 49 is somewhat greater than the width of the tabular rack so as to permit the stop H to be moved transversely thereof. The inner wall 48 is provided at its ends with integral lugs 50. 50 which extend inwardly for engagement with a pair of teeth 44 of the tabular rack. The outer wall 49 of the stop H is provided with an inwardly extending projection or anchor 51 which in the present instance is preferably formed by punching said outer wall a suitable distance. Disposed between the tabuular rack 37 and the outer wall 49 of the stop H is a spring I which in this instance is formed from a single length of wire bent into rectangular shape having three sides located in a common plane and having one end portion 52 bent outwardly at an angle from said plane and terminating in an eye 53 for interlocking engagement with the projection or anchor 51 so as to retain the spring against movement relative to the stop H. The angularly bent end portion 52 causes the stop H to be moved forwardly so as to retain the lugs 50, 50 in engagement with the teeth 44 of the tabular rack. It will be apparent, however, that upon forward pressure by the operator, the spring will be compressed and the lugs 50, 50 will become disengaged from the teeth 44 and consequently the operator may then freely slide the stop along the tabular rack to any desired position of adjustment whereupon the stop H will be automatically retained in its adjusted position upon release by the operator.

My invention also comprises a key-operated means for releasing the feed rack 18 from the escapement pinion 1'7 and for effecting an arresting movement to the carriage depending upon the positions of the tabular stops H. To this end each of the tabular stops H is provided with a clownwardly extending lug or stop 54 which are preferably integral with the respective bottom walls 47. Disposed under the tabular rack 37 is a combined lifting and stop lever J which includes a horizontal arm 55 and a downwardly extending vertical arm 56. This lever J is fulcrumed at its angle on a horizontal pivot 57 to a bracket 58 attached to the shift frame B. A stop in 59 is fixed to the bracket 58 to limit the downward movement of the horizontal arm 55. and a coil spring 60 is connected atone end to the vertical arm 56 and at its other end to the bracket 58 and functions to yieldably retain the vertical arm 56 against the stop pin 59. The free end of the horizontal arm 55 is normally held by the spring 60 below and in spaced relation to the tabular rack 37. It is evident, however, that when the lever J is swung about its pivot 57 and against the tension of the spring 60, the free end 55 of the arm 55 will engage the tabular rack 37 and thereby elevate the same. The upward movement of the tabular rack 37 will through the medium of the swinging frames D and E, cause the rack 18 to be swung rearwardly out of engagement with the escapement inion l7, and upon release of the lever the spring 35 will return the parts to their normal positions. Thus when the lever J is swung to its operative position to release the feed rack 18 from the escapement pinion 17, the angled end of 55 of the arm 55 of said lever will be moved upwardly into the path of the depending stop lug 54 of the next adjacent tabular stop H and consequently the carriage will be moved by the drum 16 until said stop 54 engages the free end of the arm 55 of the lever J. Upon release of the lever J the parts will be returned to their normal ositions and the carriage stopped in the ad1usted position thereof. In order to maintain the end of 55 of the arm 55 of the lever J in sliding contact with the tabular rack 37 during the upward movement of the latter, I have provided the free end portion of the arm 55 with a guard shoe 61.

In order to operate the lever J from a point in front of the machine, I have provided a key-o erated mechanism which includes a key ever 62 which is fulcrumed as at 63 to the main frame of the machine. A vertical rod 64 is disposed between the flanges 9 and 10 of the rear wall 6 and is fixedly secured thereto by any suitable means. Journaled on the rod 64 is a bell crank lever 65 having arms 66 and 67 arranged at right angles to each other. A link 68 has its forward end pivotally connected to the key lever 62 and its rear end pivotally connected to the arm 66 of the bell crank lever 65. A. long link 69 is pivotally connected at one end to the arm 67 of the bell crank lever 65 and at its other end to the vertical arm 56 of the combined lifting and stop lever J. The bell crank lever 65 is preferably held against vertical movements on the rod 64 by means of upper and lower collars 70 and 71 respectively.

In operation the tabular stops Hare initially set to any predetermined position of adjustment on the tabular rack 37. When it is desired to perform a tabulating operation, the operator depresses the key lever 62 and as a result the combined lifting and stop lever J will be swung against the tension of the spring 60. During this movement of the lever J, the arm 55 will be raised to engage the tabular rack 37 and upon continued movement of said lever the rack 37 will be elevated. Inasmuch as this tabular rack 37 is rigidly connected to the feed rack 18 through the medium of the rocking frames D and E, it will be apparent that the feed rack 18 will be disengaged from the pinion 17 and consequently the drum 16 will immediately eifect a movement of the carriage along its supporting track until the depending lug or stop 54 of the adjacent tabular stop H is brought into engagement with the free end of the arm 55 of the lever J. Immediately upon release of the key lever 62 by the operator, the springs 35 and 60 will quickly return the parts to their normal positions whereby the feed rack 18 will be engaged with the escapement pinion 17 and the carriage will thus be stopped in its arrested position. Inasmuch as the link 69 is of considerable length relative to the length of the carriage, it will be apparent that when the shift frame is elevated there will be no movement imparted to the lever J. \Vhen it is desired to release the carriage from the escapement and without utilizing the tabular stops H, it is only necessary to operate either of the finger pieces 21 or 43 because upon depression of either of said finger pieces the frames D and E will be rocked and the feed rack 18 will become disengaged from the escapement pinion 17 thus permitting the carriage to be placed in any position within the extreme limits of the carnage movement.

The plate *0 is provided with a downward extension 40 which normally engages the adjacent upper carriage rail It to limit the movement of the carriage rack 18 for proper meshing with the escapement pinion 17.

The curved guard shoe 61 prevents the angled end 55 of the lever J from sliding off the rack 37 when the rack is in its lifted position as shown in Figure 5, and the curved shoe will also ride over the stop rack teeth and the stop H without catching.

I claim:

1. A tabulating mechanism for typewriting machines comprising a carriage, an escapement pinion, a tabular rack and a feed rack pivoted to the carriage to move in unison whereby the feed rack is moved into and out of engagement with the pinion, stops on the tabular rack, and means engageable with the tabular rack for swinging the feed rack out of engagement with the pinion to release the carriage therefrom and for cooperating with one of the tabular stops to limit the movement of the carriage.

2. A tabulating mechanism for typewriting machines comprising a carriage, an escapement pinion, a tabular rack and a feed rack fixed to rocking frames pivoted to the carriage to move in unison whereby the feed rack is moved into and out of engagement with the pinion, stops on the tabular rack, key-operated stop means including a combined lifting and stop lever engageable with the tabular rack for swinging the rocking frames to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a prede termined distance, and a spring for normally retaining said lever out of engagement with the tabular rack.

3. A tabulating mechanism for typewriting machines comprising a carriage, an esca-pement pinion, a tabular rack and a feed rack fixed to rocking frames pivoted to the carriage to move in unison whereby the feed rack is moved into and out of engagement with the pinion, stops on the tabular rack, key-operated stop means including a --ombined lifting and stop lever engageable with the tabular rack for swinging the rocking frames to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance, a spring for normally retaining said lever out of engagement with the tabular rack, and a guard shoe fixed to the lever for cooperating with the tabular rack to maintain the lever in operative engagement with the rack.

l. A tabulating mechanism for typewriting machines comprising in combination, a main frame, a substantially vertically movable shift frame, means for moving said shift frame. a carriage movably mounted on the shift frame, an escapement mechanism including a pinion and a feed rack respectively mounted on the shift frame and carriage, the feed rack being movable into and out of engagement with the pinion, a tabular rack connected to the feed rack to move therewith, stops mounted on the tabular rack, and means including a combined lifting and stop lever fulcrumed on the shift frame and engageable with the tubular rack for moving both racks to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance.

5. A tabulating mechanism for typewriting machines comprising in combination, a main frame, a substantially vertically movable shift frame, means for moving said shift frame, a carriage movably mounted on the shift frame, an escapement mechanism including a pinion and a feed rack respectively mounted on the shift frame and carriage, the feed rack being movable into and out of engagement with the pinion, a tabular rack connected to the feed rack to move therewith, stops mounted on the tabular rack, means including a combined lifting and stop lever fulcrumed on the shift frame and engageable with the tabular rack for moving both racks to disengage the feed .rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance, a spring for normally retaining said lever out of engagement with the tabular rack, and a guard shoe fixed to the lever for cooperation with the tabular rack to maintain the lever in operative engagement with the rack.

6. A tabulating mechanism for typewriting machines comprising in combination, a main frame. a substantially vertically movable shift frame, means for moving said shift frame, a carriage movably mounted on the shift frame and including spaced track rails, an escapement mechanism including a pinion and a feed rack located between said ails, a tabular rack located in rear of the carriage, adjustable stops mounted on the tabular rack, rocking frames respectively pivoted to the ends of the carriage and having fixed connections with the feed rack and with the tabular rack, a spring for normally retaining the feed rack in engagement with the pinion, and means including a combined lifting and stop lever fulcrumed on the shift frame and engageable with the tabular rack for swinging the rocking frames to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance.

7. A tabulating mechanism for typewriting machines comprising in combination, a main frame, a substantially vertically movable shift frame, means for moving said shift frame, a carriage movably mounted on the shiftframe, an escapement mechanism including a pinion and a feed rack respectively mounted on the shift frame and carriage. the feed rack being movable into and out of engagement with the pinion, a tabular rack connected to the feed rack to move therewith, stops mounted on the tabular rack, and means for moving both racks to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance, said means including a key lever fulcrumed on the main frame, a bell crank lever fulcrumed on a vertical axis on the main frame below the tabular rack, a link connecting the key lever with one arm of the bell crank lever, a combined lifting and stop lever fulcrumed on a horizontal axis on the shift frame and engageable with the tabular rack, and a link connecting said combined lifting and stop lever and the other arm of the bell crank lever, the last mentioned link extending in parallelism with the tabular rack.

8. In a tabulating mechanism for typewriting machines, the combination of a tabular rack having teeth on one side thereof, and a tabular stop adjustably mounted thereon, said stop comprising a rectangular member encircling the rack, the wall of the member opposite the rack teeth having an anchor extending inwardly therefrom, and a spring disposed between said wall and the rack and comprising a length of wire of rectangular form having three sides located in a common plane and bearing against the face of the rack opposite the anchor, one end portion of the wire extending outwardly from said plane and terminating in an eye having interlocking connection with the anchor.

9. A tabulating mechanism for typewriting machines comprising in combination, a main frame, a carriage, a carriage escapement mechanism including a pinion and a feed rack, the feed rack being movable into and out of engagement with the pinion, a tabular rack connected to the feed rack to move therewith. stops mounted on the tabular rack. and means including a stop lever engage-able with the tabular rack for lllOV- ing both racks to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance.

10. A tabulating mechanism for typewriting machines comprising in combination, a main frame, a carriage, a carriage escapement mechanism including a pinion and a feed rack, the feed rack being movable into and out of engagement with the pinion, a tabular rack connected to the feed rack to move therewith, stops mounted on the tabular rack, means including a sto lever engageable with the tabular rack tor moving both racks to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance, a spring for normally retaining said lever out of engagement with the tabular rack, and a guard shoe fixed to the lever for cooperation with the tabular rack to maintain the lever in operative engagement with the rack.

11. A tabulating mechanism for typewriting machines comprising in combination, a main frame, a carriage including spaced track rails, an escapement mechanism including a pinion and a feed rack located between said rails, a tabular rack located in rear of the carriage, adjustable stops mounted on the tabular rack, rocking frames respectively pivoted to the ends of the carriage and having fixed connections with the feed rack and with the tabular rack, a spring for normally retaining the feed rack in engagement with the pinion, and means including a stop lever engageable with the tabular rack for swingin the rocking frames to disengage the fee rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance.

12. A tabulating mechanism for typewriting machines comprising in combination, a main frame, a carnage, a carriage esca ment mechanism including a pinion an a feed rack, the feed rack being movable into and out of engagement with the pinion, a tabular rack connected to the feed rack to move therewith, stops mounted on the tabular rack, and means for moving both racks to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance, said means including a key lever fulcrumed on the main frame. a bell crank lever tulcrumed on a vertical axis on the main frame below the tabular rack. a link connecting the key lever with one arm of the bell crank lever. a stop lever fulcrumed on a horizontal axis and engageable with the tabular rack, and a link connecting said stop lever and the other arm of the bell crank lever, the last mentioned link extending in parallelism with the tabular rack.

13. A tabulating mechanism for typewriting machines comprising a carriage, an escapement pinion, a tabular rack and a feed rack pivoted to the carriage to move in unison whereby the feed rack is moved into and out of engagement with the pinion. stops on the tabular rack, and key-operated stop means including a combined lifting and stop lever engageable with the tabular rack for swinging the rocking frames to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance. 14. A tabulating mechanism for typewriting machines comprising a carriage, an escapement pinion, a tabular rack and a feed rack pivoted to the carriage to move in unison whereby the feed rack is moved into and out of engagement with the pinion, stops on the tabular rack, key-operated stop means including a combined lifting and stop lever engageable with the tabular rack for swinging the rocking frames to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a redeterminecl distance, and a guard shoe xed to the lever for cooperation with the tabular rack to maintain the lever in operative engagement with the rack.

15. A tabulating mechanism for typewriting machines comprising a carriage and spaced track rails therefor, an escapement mechanism including a pinion and a feed rack located between said rails, a tabular rack located in rear of the carriage, adjustable stops mounted on the tabular rack, rocking frames respectively pivoted to the ends of the carriage and having fixed connections with the feed rack and with the tabular rack, and key operated stop means for swinging the rocking frames to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance.

16. A tabulating mechanism for typewriting machines comprising a carriage and spaced track rails therefor, an escapement mechanism including a pinion and a feed rack located between said rails, a tabular rack located in rear of the carriage, adjustable stops mounted on the tabular rack, rocking frames respectively pivoted to the ends of the carriage and havin fixed connections with the feed rack an with the tabular rack, key-operated stop means including a combined lifting and stop lever en ageable with the tabular rack for swinging t e rocking frames to disengage the feed rack from the pinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance, and a spring for normally retaining said lever out of engagement with the tabular rack.

17 A tabulating mechanism for typewriting machines comprisin a carriage and spaced track rails there or, an escapement mechanism including a inion and a feed rack located between said rails, a tabular rack located in rear of the carriage, adjusable stops mounted on the tabular rack, rocking frames respectively pivoted to the ends of the carriage and having fixed connections with the feed rack and with the tabular rack, key-operated stop means including a combined lifting and stop lever en ageable with the tabular rack for swinging t e rocking frames to disengage the feed rack from thepinion and for simultaneously cooperating with one of the tabular stops to limit movement of the carriage to a predetermined distance, a sprin for normally retainin said lever out 0 en agement with the ta ular rack, and a guarc l shoe fixed to the lever for cooperation with the tabular rack to maintain the lever in operative engafiement with the rack.

testimony whereof, I have hereunto subscribed my name.

LEWIS C. MYERS.

Images