US3026984A - Syllabic typewriting machine - Google Patents

Description

D. L. SHELTON SYLLABIC TYPEWRITING MACHINES March 27, 1962 4 Sheets-Sheet 1 Filed Aug. 15, 1957 NVENTOR March 27, 1962 D. L. SHELTON 3,026, 8

SYLLABIC TYPEWRITING MACHINES Filed Aug. 15, 1957 4 Sheets-Sheet 2 INVENTOR March 27, 1962 D. L. SHELTON SYLLABIC TYPEWRITING MACHINES Filed Aug. 15, 1957 4' Sheets-Sheet 3 INVENTOR March 1962 D. L. SHELTON 3,026,984

SYLLABIC TYPEWRITING MACHINES Filed Aug. 15, 1957 4 Sheets-Sheet 4 INVENTOR United States Patent 3 026984 SYLLABIC TYPEWRITING MACHINES Dothan L. Shelton, 4420 W. 2nd St., Amarillo, Tex. Filed Aug. 15, 1957, Ser. No. 678,344 33 Claims. (Cl. 19717) This invention relates to typewriting machines and more particularly to that class of typewriting machines wherein the type bars and other operable devices are power driven. It is the object of this invention to provide a power operated typewriter adapted to use a syllabic keyboard of the type commonly used on shorthand machines, so designed that in response to finger movements it will be possible to produce a typewritten page in clear writing, as distinguished from code writing as usually produced by shorthand machines, at a speed comparable to the spoken language. The obvious need and utility of such a machine is apparent when it is observed that one using such a machine can take dictation directly on the machine and produce a finished typewritten transcript without the necessity of rewriting what has been taken. Also in reporting, as in the court room a complete transcript of the proceedings can be produced as the matter is reported without the necessity of long hours of transcribing. Such a machine used for ordinary typewriting will more than double the speed of production of the typist over present machines.

The keyboard used on presently manufactured power driven typewriters first appeared on the Sholes and Glidden manual typewriter of 1873 and was intended for use with the two index fingers. After these machines had been on the market for some time, touch typewriting was developed and this keyboard came to be regarded as standard for all typewriters. The highest official speed attained on this keyboard for sustained writing is slightly under 150 words per minute. For practical purposes, however, speeds of from 50 to 60 words per minute are regarded as good for the average typist.

During the early part of the present century, so called shorthand typewriters were developed using the syllabic or word-at-a-stroke keyboard. Machines using this style of keyboard are presently being manufactured and have proved very successful in verbatim reporting. The most serious drawback to these machines is that they write in a code or semi-code on a paper tape and are not page printing typewriters. For this reason matter written thereon must be transcribed in the same fashion as conventional shorthand. Machines of this kind have gained considerable acceptance and speeds approaching 400 words per minute have been attained thereon. For practical purposes, however, speeds of from 125 to 200 words per minute are most common for experienced operators.

Power operated page printing typewriters having center striking type bars have been developed capable of mechanical speeds in excess of 400 words per minute, however, present manufacturers of these machines continue to equip them with the standard keyboard having a practical operating speed of from 50 to 60 words per minute. What is proposed in my invention is to provide a power driven page printing typewriter with a syllabic keyboard on which it will be possible for the average operator to write at speeds of 125 to 200 words per minute with the same effort that presently produces 50 to 60 words per minute on the standard typewriter.

Word writing page printing typewriters have been designed wherein words and syllables are set up on the keyboard, in some instances by the operation or" a single key, and in other instances by the operation of a plurality of keys. Dilficulties have been experienced in the method of operation of these machines in that a word or syllable may be selected on the keyboard and set up in the machine with a single finger operation, but printed one letter 3,025,934 Patented Mar. 27, 1962 at a time while the operator waits. Upon completion of the writing of the first selection, additional selections may be made. Obviously very little in the way of speed can be gained by such a start and stop method of operation.

It is an object of this invention to provide a method of typewriting wherein the operator or typist can uninterruptedly finger the keyboard without the necessity of waiting for the machine to complete a keyboard selection or function previously set up, before making another selection. This has been accomplished by devising the method of operation as herein disclosed around the principle that words and syllables are made up of letters which fall into three groups classified as initial consonants, final consonants, and vowels, which are regarded as medial. On the keyboard adapted for use with the machine and method of writing herein disclosed, the initial consonants are arranged at the left side and adapted to be operated by the fingers of the left hand, the final consonants are arranged on the right side and adapted to be operated by the fingers of the right hand, and the vowels are medially arranged to be operated by the thumbs. Corresponding to this arrangement of the keyboard, the letter types on the printing elements are arranged in the order in which the letters most frequently'appear in words and syllables and so disposed that any selection of letters set up on the keyboard will be printed in rapid succession from left to right upon release of the keys. While this selection is being printed, the operator may set up another selection on the keyboard without waiting for the machine to clear the first selection, thus the operator may uninterruptedly finger the keyboard while the machine is in operation without continual stops and starts.

These and other objects are accomplished through novel means embodying a keyboard comprising finger keys adapted to be operated either singly or in combinations for the purpose of registering in the machine single letters or combinations of letters comprising entire syllables or words, a selector mechanism cooperating with the finger keys for the purpose of selecting letters or combinations of letters to be written, a type registering means for receiving and storing selections of letters or combinations of letters to be written, a type bar actuating means for writing the letters or combinations of letters selected, a releasing means for imparting type selections to the type bar actuating means, a sequence control means whereby selected type bars are caused to operate in a predetermined sequence, a series of arcuately arrayed type bars arranged adjacent to a platen, and power means With the foregoing and other objects in view which will appear as the description progresses, this invention consists of certain novel features of construction and combinations of parts as hereinafter more fully described and pointed out in the specifications and claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit and scope of the invention as herein disclosed and claimed.

EIH the drawings:

FIGURE 1 is a sectional side elevation of a typewriting machine embodying this invention, showing internal construction and relationship of parts.

FIGURE 2 is a sectional side elevation of the selector mechanism and type bar actuating cams, disclosing the selector mechanism in actuated position.

FIGURE 3 is a sectional side elevation disclosing the type registering means and the register actuating cam in operated position.

FIGURE 4 is a sectional side elevation of the type bar actuating cam and related parts in actuated position.

FIGURE 5 is an enlarged view of the reverse side of the actuating cam.

FIGURE 6 is an enlarged view of the actuating cam with portions cut away to show operation of the releasing mechanism.

FIGURE 7 is an enlarged view of the actuating cams mounted in series with portions cut away to disclose internal construction.

FIGURE 8 is a front elevational view of a number of finger keys and related selector bars.

FIGURE 9 is a perspective view showing the construction of the selector bars.

FIGURE 10 is a side elevational view of the actuating cam and related parts showing an alternate construction.

Referring more particularly to the drawings, there is disclosed a machine frame 21 and a platen 22 which is supported on a carriage of conventional design. The carriage mechanism, as well as the various other instrumentalities of the machine, such as the letter shift, tabulating mechanism, carriage drive and return mechanism, line feed, ribbon spools and oscillator, motor circuit and switch, the driving motor and all other essential parts not herein disclosed which are common to typewriting machines may be of any conventional or desired construction.

Mounted in the lower front portion of the frame 21 is the key lever assembly comprised of a supporting shaft 23 upon which are pivotally mounted between spacers a plurality of key levers 24, which extend forwardly and are provided on their forward ends with finger keys 25, The finger keys are arranged to form a keyboard of the kind commonly used on shorthand machines and is well known to the art. For this reason and for the sake of brevity, a full keyboard is not shown, but only a few of the finger keys and corresponding key levers with related parts, areshown, the principles disclosed being readily adaptable to a full'keyboard.

Above the key levers24 and intermediate the supporting shaft 2 3 and-the finger keys 25 is mountedthe type selecting means comprising a plurality of permutably shiftable bars, specifically designated herein as primary selector bars 26 and auxiliary selector bars 26A, disposed one above the other, extending crosswise of the machine frame, and slidably mounted at each end in guides 27 as shown in FIGURE 8. The selector bars vary slightly in design and are provided on their edges with notches 28 and projections29' (FIGURE 9), which are adapted to perform the type selecting function as hereinafter explained. Each of the auxiliary selector bars 26A is provided with a cross bar 30.integral therewith, which is adapted to contact a plurality of projections 29 provided on the primary selector bars 26. To each of the auxiliary selector bars 26A is attachedone end of a spring 31, the other end of which is secured to the frame bracket 27. The springs 31 are adapted to constantly exert pressure on the auxiliary selector bars 26A so as to urge them to move into actuated position, but beingrestrained from so doing while the primary selector bars 26 are in rest or inactive position, by the restraining action of the projections 29 provided on the primary selector bars 26, which act against the cross bars carried on the auxiliary selector bars 26A.

Adjacent to the selector bars 26 and 26A and comprising a part of the type selecting means are mounted a plurality of release hook carrier arms 32. These carrier arms are mounted at their upper and lower ends by means of pivoted links 33, which are mounted in spaced relation in slotted cross bars 34 by means of bearing shafts 35 and are of equal length so as to impart a parallel action to the carrier arms 32. The release hook carrier arms 32 are disposed vertically so as to cross the selector bars 26 and 26A at right angles and in such manner as to contact the edges of the selector bars when released for selection thereby. Adjacent to the lower end of each of the release hook carrier arms 32, extending rearwardly and forming a part thereof, is provided the release hook carrier head 36 which is provided with a headed pin 37 adapted to engage a release hook 99 by means of a slot as hereinafter more fully explained.

The primary selector bars 26 are operatively connected to the key levers 24 by means of pull bars 38, the upper ends of which are carried in guide 39, the lower ends being pivotally attached to corresponding key levers 24. There is attached to each of the pull bars 38, intermediate the ends thereof, one end of a spring 40, the other end of which is attached to a spring bracket 41 carried on the front part of the frame 21. The springs 40 are disposed in such way as to constantly exert tension on the pull bars 38 and thus urge them and all operative parts connected thereto into retracted or inactive position. Provided on the rearward edge of each of the pull bars 38, intermediate the ends thereof, is a pin 42 which is adapted to engage a cam slot 43 provided on each of the primary selector bars 26 (FIGURE 8). The cam slots 43 are so designed that the downward motion of pins 42 will cause the primary selector bars 26 to move in a transversev direction during initial movement of the key levers.

Rearwardly of the key lever assembly is mounted the actuating mechanism, which consists of a transverse shaft 44 which is fixedly mounted in the frame brackets 45 (FIGURE 7), and upon which are mounted in spaced relation a plurality of actuating cams 46, there being provided. one cam for each type bar and each operational device such as the letter shift, carriage return, tabulator mechanism, back spacer, and the like. At the extreme right end of the cam assembly and mounted in series with the actuating cams 46 is provided a control cam 47, and at the extreme left end is provided a starter cam 48. The purpose and function of these cams are hereinafter more fully explained.

Each of the actuating cams 46 is provided with two release latches 49 (FIGURES 5 and 6), which are pivotally mounted intermediate the ends thereof, one on each Side of the axis of the cam on brackets 50 by means of pivots 51. On one end of the release latch 49 is provided a latch contact head 52 and on the other end is provided a latch detent 53 which is adapted to limit the clockwise movement of the release latch 49. Intermediate the contact head 52 and the pivot 51 of the release latch 49 is provided thereon an ear 54 which is disposed to be acted upon by a ball 55 carried in the adjacent actuating cam 46 as hereinafter explained. Each of the release latches 49 is provided with a latch spring 56 which serves the function of urging the release latch 49 into rest position.

Each of the actuating cams 46 is provided with two movable elements or release balls 55 which are carried in ball races 57 recessed in the cam. The ball races 57 are choked at each end so as to retain the release balls 55 and to limit their movement within the races, yet a1- lowing sufficient lateral movement to perform the function of actuating the release latches 49 as hereinafter more fully explained. The actuating cams 46 are so spaced on the supporting shaft 44 (FIGURE 7) that the release balls 55 carried in each of the actuating cams will contact the corresponding release balls carried in the adjacent cams, so that the balls 55 form a continuous contact through the entire series of actuating earns 46 when the cams are in primary or rest position. The release balls 55 are so disposed as to form two rows of contacting elements extending from end to end of the series of actuating cams 46. The rearward row of release balls 55 (FIGURE 1, the lower row in FIGURE 7) is designated as being in active position, while the forward row is designated as being in neutral position. At each end of the rearward or active row of release balls 55, and mounted in the frame brackets 45, is provided release ball positioning means 69A and 66B. Each of the ball positioning means is provided with a compression spring 53 which is disposed to exert pressure on the ball 55 carried within the ball race 57 providei in each of the ball positioning means. The tension of the springs 58 may be adjusted as required to perform the ball positioning function by means of the adjusting screws 59. The ball positioning means 60A and 69B are adapted to position the release balls 55 within the actuating cams 46 in transverse relation thereto as hereinafter explained. The forward or neutral row of release balls 55 is provided with a ball positioning means 60C carried in the frame bracket 45 and disposed to retain the neutral balls 55 in rest position.

Carried on the face of each of the actuating cams 46 and concentric therewith is a laterally projecting cam element 61 which is adapted to contact the spring-tensioned actuating levers 63 for the purpose of imparting operative action thereto. As an alternative embodiment, the actuating cam 46 (FIGURE is provided on its face with two laterally projecting contact rollers 62 which are concentric with the cam 46 and adapted to contact the actuating lever 63A and impart operative action thereto. The actuating levers 63 are provided with an adjustable contact head 64 and are mounted in spaced relation in slotted cross frame 65 by means of the bearing shaft 66. There is attached to an upwardly extending portion of the actuating lever 63 one end of a spring 67, the other end of which is secured to the frame bracket 68 provided on the cross frame 65. The spring 67 is adapted to exert tension on the actuating lever 63 so as to urge the said actuating lever into contact with the cam element 61 carried on the face of the actuating cam 46, to thereby exert force tending to rotate the actuating cam 46 into operative engagement with the power roller 69.

It will be observed by reference to the drawings that the actuating cams are adapted to effect an operative function with each half revolution thereof. It is found, however, that such operative functions as shifting the type basket, back spacing, and other similar functions require more power and slower operation than the function of throwing the type bars. To effect theproper operation of these slower functions, a one-round cam such as the starter cam 48 (FIGURE 3) may be provided for each of these functions. This cam is provided on the face thereof with a single lobe cam element 61A which is adapted to make operative contact with the actuating lever 63 for the purpose of imparting operative action thereto, the actuating lever 63 being operatively connected with the respective parts operated thereby.

Adjacent to the actuating cams is mounted the power roller 69 which is supported by shaft 71 mounted in journals carried on the machine frame. When the machine is in operation, the power roller 69 is adapted to be in constant rotation in an anti-clockwise direction and to impart turning action to the actuating cams 46 when engaged thereby, by means of peripheral contact with the enlarged segments 70 of the actuating cams. When the cams 46 are rotated so that the spaces between the segments 70 are disposed toward the power roller 69, the cams are disengaged from the power roller and remain in primary or rest position. The power roller 69 is adapted to be activated by means of an electric motor or other suitable power means, which for the sake of brevity is not disclosed herein.

Intermediate the actuating cam assembly and the selector assembly is disposed the register assembly and cam release means which is adapted to receive type selections from the type selecting means and to impart the same to the type bar actuating means. The register assembly is adapted to receive type selections and when necessary retain them until the cam assembly has completed an operational sequence and to then impart the type selections to the cam release means for sequential operation as hereinafter more fully described. It should be understood that the term type selection is used herein to include not only type bar functions, but also other the frame bracket 115.

6 operational functions associated with typewriting and the like, such as the capital shift, letter spacing, line spacing, tabulating, back spacing, carriage return and other functions.

The cam release mechanism comprises a cam release pawl 72 which is mounted in the slotted cross bar 65 by means of a bearing shaft 66. The release pawl '72 is provided on its lower end with a detent 73 which is adapted to engage the release latch head 52 provided on the forward release latch 49 for the purpose of arresting the movement of the actuating cam 46 and retaining it in primary position while at rest. There is provided on the release pawl 72 a spring 72A which is adapted to urge the release pawl in an anti-clockwise direction and into the path of the release latch head 52. There is provided on the cross frame 65 a forwardly projecting detent 74 which is designed to limit the anti-clockwise turning action ofthe release pawl 72. The release pawl 72 is provided with an upwardly extending arm 75 which connects with an operating link 76, which extends forwardly and is attached to the upper end of a trip pawl 77. The

trip pawl 77 is mounted in the slotted cross frame 78 by means of a bearing shaft 79, and extends downwardly to form a contact head 80. The cam release mechanism also includes a secondary detent 114 which is afixed to The secondary detent 114 is adapted to engage the contact head 52 of the rearward release latch 49 when the said actuating cam 46 has been released from primary position and to thereby retain the actuating cam in secondary position until released for operation as hereinafter explained.

Beneath the cross frame 78, extending transversely of the machine and pivotally mounted to the side frame at each end at 81, is provided a register bar 82 which is provided with spaced slots into which is mounted a series of register members or plungers 83, there being one plunger for each type action or other device subject to delayed action control as hereinafter explained. Each register plunger 83 is provided with a head 84, and a detent 85. The detent is adapted to cooperate with a leaf spring 86 for the purpose of retaining the register plunger 83 either in actuated or retracted position. There is also provided on each register plunger 83 a contact lug 87 which is adapted to project laterally therefrom and to make operative engagement with the corresponding trip pawl head 80. Adjacent to the register bar there is provided a plunger reset bar 88, which is disposed to cooperate with the forward end of the register plungers 83 so as to return them to retracted position at the conclusion of each operation of the register bar. At the left end of the register bar and integral therewith is provided a bell crank 89 which is operatively connected to the starter cam 48 (FIGURE 3) by means of the thrust link 90. The thrust link 90 is pivotally connected at its rearward end to the sublever 91 and at its forward end to the register bar toggle link 92 which is pivotally mounted on its rearward end to the bell crank 89. The forward end of the link 92 is pivotally connected to the forward toggle link 93 which is pivoted on the machine frame at 94. The toggle links 92. and 93 are disposed when at rest to lock the register bar into rest position.

There is formed on the rearward side of the cross frame 78 a slotted guide into which is pivotally mounted the release hook support levers 95 by means of a bearing shaft 96. Each support lever 95 is provided on its upper end with a spring 97, the forward end of which is attached to the frame bracket 98. This spring serves to bias the support lever 95 and connected parts into retracted position. On the lower end of the support lever 95 is pivotally mounted the release hook 99 which is provided on its forward end with a slot 1% adapted to cooperate with the headed pin 37 carried on the release hook carrier head 36, for the purpose of supporting the forward end of the release hook 99. There is provided on the forward end of the release book 99, a hook-like notch I 101, which is adapted to engage the release bail 106. The upwardly extending end of the release hook 99 terminates in a contact head 102 which is adapted upon operation to contact the corresponding register plunger 84 for the purpose of actuating or setting the register plunger 83 for engagement of lug 87 with the trip pawl 77.

Below the key levers 24 there is pivotally mounted in the side frames of the machine at 103 a universal bar 104, which extends transversely of the machine and is disposed to be contacted by the lower edges of the key levers 24 so that the downward movement of any key lever will actuate the universal bar. The universal bar is provided with widely spaced upwardly extending arms 105 which are integral therewith and upon which is mounted a release bail 106 which is disposed to make contact with the release hook carrier head 36 and to engage for operation the release hook 99. The upwardly extending arm 105 of the universal bar is provided with a spring 107, the rearward end of which is attached to the machine frame. This spring serves to urge the universal bar and relatel parts into retracted position.

Disposed above the actuating cam assembly and adjacent to the platen 22 is provided the type bar assembly, which is comprised of a series of type bars 108, mounted in the conventional arcuate guide by means of a bearing shaft 109. Each of the type bars 108 is operatively connected to a corresponding sub-lever 91 by means of a pull link 110, one end of which is attached to the upper end of the sub-lever 91, and the other end to the rearwardly extending arm 111 provided on the type bar 108. Attached near the upper end of the sub-lever 91 is one end of a spring 112, the other end of which is attached to the frame bracket 68. The spring 112 serves to bias the type bars and the sub-levers into retracted position.

Each of thesub-levers 91 is provided with a laterally projecting lug 113 which is adapted to be acted upon by the corresponding contact head 64 carried on the upper end of the actuating lever 63 for the purpose of transmitting driving action to the sub-lever 91. The contact head 64 is adjustable by screw means whereby adjustment can be made to open or close the space between the head 64 and the lug 113. By closing this space, greater move-. ment is imparted to the sub-lever 91 by the action of the actuating lever 63, so that the connected type bar 108 will be impelled to printing position with increased impact of the types on the platen. Conversely, the opening of the space between the contact head 64 and the lug 113 will lessen the impact of the types on the platen. This arrangement is provided to effect impression control of the individual type bars.

In the alternative embodiment disclosed in FIGURE 10, there is provided a spring tensioned lever 116 which is pivotally mounted on the frame bracket 115 by means of the bearing shaft 117. The spring tensioned lever116 is adapted to make operative contact with the contact roller 62 provided on the face of the actuating cam 46. Tension is provided for the lever 116 by means of the spring 118 which is attached at one end to the lever 116 and at the other end to a frame bracket. This spring tensioned lever exerts pressure on the actuating cam 46 so as to urge it into engagement with the power roller 69. The actuating lever 63A is connected with the sublever 91 by means of the adjusting screw 64A, the head of which is adapted to fit into a slot provided in the projection 113A carried on the sub-lever 91. The other end of the screw 64A has threaded connection with the actuating lever 63A. Adjustment of the screw member 64A is effective to increase or decrease the printing impact of the type bar on the platen and is efiective to provide impression control of the individual type bars.

As previously pointed out there is provided at the extreme right end of the series of actuating earns 46 a control cam 47 (FIGURE 2) and at the extreme left end of said series a starter cam 48 (FIGURE 3). The control cam 47 serves the function of releasing the starter cam 48 for operation. To effect this, the sub-lever 91 associated with the control cam 47 (FIGURE 2) is operatively connected to the cam release pawl 72 of the starter cam 48 (FIGURE 3). This connection is effected by means of a transverse shaft 119 which is provided on its right end with an upwardly extending bell crank 12%, and on its left end with a downwardly extending bell crank 121. The bell crank 120 is connected by link 123 to the sub-lever 91 of the control cam 47, and the bell crank 121 is connected by link 122 to the cam release pawl 72 of the starter cam 48, so that operation of the control cam 47 is effective to release for operation the starter cam 48. This is effected by movement of the release pawl 72 from engagement with the latch ear 5213 provided on the starter cam. In operation the starter cam 48 serves to operate the register bar 82 for the purpose of releasing selected cams from primary position upon completion of its cycle of operation to start the sequential release of the actuating cams.

The control cam 47 (FIGURE 2) has provided thereon a latch ear 52A which is adapted to engage the detent 73 provided on the release pawl 72. This latch ear is effective to provide a two-way action for the release pawl 72 for the purpose of releasing the control cam 47 from primary position upon. release of the finger keys. The upwardly. extending arm-75 provided on the release pawl 72 of the control cam 47 is connected to the universal bar bellcrank by means of connecting links 124, 125, and 126. The bell crank 105 is connected to link 124 by means ofa headed pin 127 and a slot 128. This mechanism is efiective to. release from primary position the control cam 47 upon the completion of an operating cycle of the universal bar.

There are certain functions of a typewriting machine suchas underscoring, the writing of certain symbols, tabulating, letter shift, and the like which for operative purposes it is not desirable to operate in connection with a sequence control device such as herein disclosed. For these operations actuating cams are provided without the pivoted latch members 49 and the release balls 55. On suchcarns the detent 73 provided on the release pawl is adapted to contact latch cars such as 52A (FIGURE 2) and 52B (FIGURE 3) arranged to release the cams either on the downward motion of the finger key, or upon release of the finger key as desired to perform the particular function. The upwardly extending arm 75 of the release pawl 72 for such cams may be connected by individual bell cranks directly to the key levers for direct operation, or they may be connected directly to the release hook 99 for operation through the selector mechanism, thus by-passing the delayed action register bar 82, or such functions may be registered for delayed action on the register bar.

In operation, the finger keys 25 are depressed by finger movements either singly or in combinations for the purpose of writing the letter or combination of letters desired. The downward movement of the finger key 25 pivots the key lever 24 on its mounting shaft 23, moving all operative parts connected thereto into the positions disclosed in FIGURES 2 and 8. The downward movement of the key lever 24 moves the pull bar 38 against the tension of spring'40. The movement of the pull bar 38 moves the pin 42 carried on the pull bar downward in slot 43 (FIGURE 8) provided on the primary selector bar 26. The action of the pin 42, moving in slot 43, forces the primary selector bar 26 to the left a predetermined distance. Should a combination of primary'selector bars 26 controlling the operation of an auxiliary selector bar 26A be moved simultaneously, such movement will tend to carry the projections 29 provided on the edges of the primary selector bars 26 away from the cross bar 30 carried on each of the auxiliary selector bars 26A. This movement allows the corresponding spring 31 to move the affected auxiliary selector bar 26A simultaneously with the primary selector bars 26. The

movement of the selector bars 26 and 26A serves to bring the notches 28 provided in the rearward edges thereof into line with predetermined release hook carrier arms 32, allowing the release hook carrier arms to pass into the notches 28 when released by further movement of the finger keys as hereinafter explained. The movement of the finger keys carries the universal bar 104 downward into the position shown in FIGURE 2, thus moving the release bail 106 forwardly from beneath the release hook carrier head 36, allowing the release hook carrier arm 32 to move into the notches 28 provided in the rearward edges of the selector bars '26 and 26A. The downward movement of the release hook carrier arm 32, which is effected by the swinging action of links 33 in response to gravitational pull, carries the forward end of the release hook 99, which is operatively connected to the release hook carrier arm by means of the headed pin 37 and the slot 100, into operative engagement with the release bail 166, causing the hook-like notch 161 provided on the forward end of the release hook 99 to be engaged by the release bail 166. The action just explained is ac complished during the first part of the movement of the finger keys. Further movement of the finger keys, moves the actuating bail 106 forwardly thereby swinging the release book 99 forwardly on its supporting link 95, bringing the release hook head 162 into engagement with the register plunger head 84, thereby projecting the register plunger 83 forwardly in the register bar 82. This action engages the contact lug 87 carried on the register plunger 83 with the head 36 of the trip pawl 77.

The movement just explained also carries the bell crank 105 forwardly into the position shown in FIGURE 2, which action through the medium of connecting links 124, 125, and 126 turns the release pawl 72 on its pivot 66, disengaging the release pawl detent 73 from the re lease latch head 52 carried on the control cam 47, allowing the force of spring 67 through the medium of the actuating lever 63 to rotate the control cam 47 in a clockwise direction until the lug 52A provided on the cam is brought into engagement with the detent 73.

Upon release of the finger keys 25, the springs 60' will return the key levers 24, pull bars 38, and selector bars 26 and 26A to inactive position. This allows the spring 167 to return the universal bar and attached release bail 106 to retracted position. This also permits the release pawl spring 72A to return the release pawl 72 to rest position, thereby releasing detent 73 (FIGURE 2) from lug 52A, allowing the spring-tensioned lever 63 to further rotate the control cam 47. If at this point all of the actuating earns 46 are in primary position, the rearward release latch head 52 of the control cam 47 will be caused to pass the secondary detent 114 without engagement therewith and the control cam will be rotated into engagement with the power roller 6?. Should any actuating cam 46 be in operation or tripped into secondary position as hereinafter explained, the latch head 52 of the control cam will engage the secondary detent 114 and retain the control cam in this position until all actuating cams 46 are returned to primary position, at which time it will be released and rotated into engagement with the power roller 69. Rotation of the power roller will turn the cam 47 one half revolution and thereby bring the laterally projecting element 61 into engagement with the actuating lever 63 (FIGURE 4). The actuating lever 63 through the medium of the contact head 64 and the projecting lug 113 will pivot the sub-lever 91 in an anticlockwise direction. This action through the transverse shaft 119 and the connecting links 123 and 122 (FIG- URES 2 and 3) will operate the release pawl 72 which controls the action of the starter cam 43 by removing the release pawl detent 73 from engagement with the lug 52B carried on the cam 68. Upon release of the starter cam 48, it is brought into operative engagement with the power roller 69 and is rotated thereby. This action through the medium of the cam element 61A, the actuating lever 63, sub-lever 91, and thrust link 90, acting on toggle links 92 and Q3 will rock the register bar on its axis 81 into actuated position as shown in FIGURE 3. This action will engage the contact lug 87 carried on the register plunger 83 in a downward direction against the trip pawl contact head 80, turning the trip pawl 77 in a clockwise direction. This action, through the connecting link 76 will operate the cam release pawls 72, thereby disengaging the release pawl detent 73 from the release latch head 52 carried on the actuating cam 46 (FIGURE 1), releasing the actuating cam from primary position. When the cam 46 is released, the actuating lever 63, moving under tension from the spring 67, will rotate the cam in a clockwise direction until the rearward release latch head 52 is brought into engagement with the secondary detent 114 (FIGURES l, 5, 6, and 7). Further movement of the starter cam 48 will carry the forward end of the tripped register plungers 83 against the plunger reset bar 88, which will force the plungers rearwardly into retracted position. As the starter cam 48 completes a revolution, the lug 52B is brought into engagement with the detent 73 carried on the release pawl 72, thereby arresting the movement of the starter cam 48. The register bar and connecting parts will be returned to retracted position through the action of the spring 112 on the sublever 91.

When all of the cams are in primary position the re lease balls 55 in the active row (bottom row of FIGURES 5, 6, and 7: rearward row in other figures), are all displaced to the right (FIGURE 7). This is accomplished by placing more tension on the spring 58 carried in the ball positioning means 66A than is placed on the corresponding spring carried in the ball positioning means 6613. This is accomplished through the setting of the adjusting screws 59 comprising part of the respective ball positioning means.

When the control cam 47 is released from primary position the release ball 55 carried therein and in the active row is carried out of contact with the corresponding release ball in the actuating cam 46. Rotation of the control cam 47 will release for operation the starter cam 48 as hereinbefore explained. When the starter cam 48 is released, the release ball 55 carried therein is moved out of contact with the row of balls in active position. This action breaks the contact between the release balls 55 carried in the actuating cams 46 and the corresponding ball carried in the ball positioning means 64%.. As the control cam 47 completes a half revolution and is arrested in primary position, the release ball 55 carried therein which formerly reposed in the inactive row is brought into the active row of balls. This action takes place while the starter cam is in rotation and the ball carried in the starter cam 48 is out of contact with the active row of balls. This allows the hall positioning means 69B to displace the balls to the left as shown in dotted lines in FIGURE 7. The rotation of the starter cam 48 effects the release of the selected actuating cams 46 from primary position in the manner hereinbefore eX- plained. The actuating cams 46 are arrested in secondary position by reason of the rearward release latch head 52 being brought into contact with the secondary detent 114. The tripped cams are retained in this position until the starter cam 48 completes a revolution and is brought back to primary position, and the release ball 55 carried therein is brought back into line with the row of active balls.

The return of the starter cam 48 to primary position will bring the release ball 55 carried therein into active position as shown in FIGURE 7. The moving of this ball into active position will displace the other release balls 55 carried in the actuating cams 46 in a right hand direction. When the actuating cams 46 were tripped from primary position and moved into secondary position as hereinbefore explained, the release balls 55 carried in each of the cams so tripped were carried out of contact with like balls in the adjacent cams not released from primary position, and the latch ears 54 provided on the release latches 49 of the tripped cams were carried into contact with the release balls 55 carried in the adjacent cam to the left thereof as illustrated in FIGURE 7, by ball 55A, and latch ear 54A of cam 46A. As the starter cam 48 is returned to primary position and the release balls 55 in active position are displaced in a right hand direction as hereinbefore explained, the release ball 55' adjacent to the release latch ear 54 will be forced against said ear, thereby turning the release latch 49 on its pivot 51, thus moving the release latch head 52 to the right and out of engagement with the secondary detent 114 as disclosed in FIGURES 6 and 7. Upon release from secondary position of the actuating cams 46, tension exerted by the spring 67, through the medium of the actuating lever 63 will move the enlarged segment 76 of the actuating cam into contact relation with the power roller 69. The power roller 69 is adapted to be in constant rotation in an anti-clockwise direction. Through friction contact with the enlarged segment 70, the power roller will rotate the actuating cam one-half revolution to effect an operating cycle of the type bars. The rotation of the actuating cam 46 will carry the contact element 61 into engagement with the actuating lever 63, moving it into actuated position as disclosed in FIGURE 4. This action brings the contact head 64 into engagement with the lug 113 provided on the sub-lever 91, thereby tipping the sub-lever forwardly on its axis 66. This action through the medium of the pull link 110 will pivot the type bar 108 on its bearing 109 and impel it into printing contact with the platen.

As the actuating cam 46 completes one-half revolution, the enlarged segment 70 of the cam is carried out of engagement with the power roller 69, at which point the actuating cam is arrested by the action of the release latch head 52 being brought into engagement with the detent 73 provided on the release pawl 72. The actuating lever 63 is returned to rest position by means of the spring 67. The sub-lever 91 and connected type bar 108 are returned to rest position by means of the spring 112. As the actuating cam 46 is returned to primary position, the release ball 55 carried therein, which was formerly in neutral position is brought into active position, thereby displacing the release balls 55 to the right thereof in a right hand direction. This action releases the next actuating cam in sequence which has been tripped into secondary position in the same manner as the first cam was released as herein explained. This action is repeated until all of the actuating cams that have been tripped into secondary position have been operated and returned to primary position. While this action is in progress, an additional selection of types or other functions can be made on the keyboard and set up on the register bar. When the first selection has been writtenin the manner explained and all of the actuating cams returnedto primary position, the control cam 47 will be released from secondary position in the same manner as the actuating cams 46. The control cam 47 will be caused to rotate and will again release the starter cam 48 which will actuate the register bar 32 and thereby trip selected actuating cams 46 for printing the second selection of types. This arrangement allows a deferred action operation whereby the operator can set up a word on the keyboard while a previous selection is being printed. It will be observed that the cam releasing means herein disclosed will permit the operation in rapid succession of any number or combination of actuating cams.

With the combination and arrangement of parts as herein disclosed, it will be possible to use on a power driven typewriter a keyboard or" the type commonly used on shorthand machines. Such keyboards usually have initial consonant letters disposed on the left side thereof and adapted to be operated by the fingers of the left hand; final consonant letters are usually disposed on the right side thereof, and adapted to be operated by the fingers of the right hand; while the vowels are medially disposed and are adapted to be operated by the thumbs. Corresponding to this arrangement of the keyboard, the letter types on the type bars are arranged in the same order and so disposed that any combination of letters set up on the keyboard, upon release of the keys, will be written in rapid succession from left to right in the same order as they appear on the keyboard. It will also be observed that the selecting means herein disclosed will permit the use of a single key or a combination of keys to control the writing of a single letter or a combination of letters as predetermined. This feature of the invention will permit the control of a maximum number of type bars with a minimum number of finger keys. For instance the four finger keys disclosed in FEGURE 8 can be adapted to control the writing of as many as fifteen letters and letter combinations. With this arrangement it will be possible to register on the keyboard combinations of letters comprising entire words or syllables at one operation. Selections thus made will be set up on the register bar and upon release of the finger keys will be transferred to the actuating cams, which will write the selected letters in rapid succession. While this action is being performed, another selection of letters to be written may be set up on the register bar. Upon completion of the writing of the first selection, the next selection will be automatically transferred to the actuating cams for printing. Thus it will be possible on a type writing machine embodying this invention to write at a speed far in excess of that possible on presently manufactured page printing typewriters.

Having now described and illustrated an embodiment of my invention disclosing a particular construction, combination, and arrangement of parts, I wish it to be understood that my invention is not to be limited to the specific form or arrangement of parts herein described and shown, or specifically covered by my claims.

What is claimed is:

1. In a typewriting machine, a platen, printing elements having types arranged thereon mounted in operative relation to the platen, a power driven roller, rotatable cams responsive to the power driven roller and means operatively connecting the cams to the printing elements, pivoted latch members mounted on said cams, primary detents engageable by the latch members and operable to retain the cams in primary position, mechanism responsive to selective control including a series of permutably shiftable bars and means selectable thereby for selecting types to be printed, a register bar, a series of projectible lugs mounted on the register bar for registering selected types, means engageable by the lugs adapted upon operation of the register bar to release selected cams from primary position, secondary detents engageable by the latch members and effective to arrest and retain the selected cams in secondary position, and means provided in the cams for consecutively disengaging the latch members from said secondary detents, thereby releasing in predetermined sequence the selected cams from secondary position for operative engagement with the power driven roller for printing selected types.

2. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a continuously rotating power roller, cams adapted to frictionally engage the power roller for rotation thereby, pivoted latch members mounted on the cams, pawls adapted to engage the cams, normally holding the cams against movement into secondary position, a register bar, projectible lugs mounted on the register bar normally held in retracted position, selectable means for projecting the lugs into operative position, said projected lugs effective upon operation of the register bar to actuate the pawls, means subject to delayed action control for operating the register bar, thereby releasing selected cams for movement into secondary position, detents mounted adjacent to the cams and engageable by the pivoted latch members for holding the cams in secondary position, sequence control means embodying latch operating members provided in the cams disposed to form a series of contacting elements through the cams in primary position, and effective to operatively contact the latch members of cams in secondary position for sequentially releasing selected cams for rotation, and means for transmitting movement of the cams to the type elements.

3. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power driven member, actuators adapted to operatively engage the power driven member, permutably shiftable selector bars responsive to selective control for selecting types to be printed, means for registering selected types embodying a series of projectible lugs, detenting means normally holding the actuators out of engagement with the power driven member, means engageable by the lugs and operable to release the detenting means for initially releasing selected actuators, secondary detents operable to retain selected actuators in secondary position, means for releasing in predetermined sequence the selected actuators from secondary position for operative engagement with the power driven member, and means for transmitting movement of the actuators to the printing elements, printing selected types.

4. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power driven member, actuating means for each type element engageable by the power driven member to impart driving action to the type elements, means for selecting types to be printed, a register bar, a series of projectible lugs mounted on the register bar for registering selected types, sequentially controlled means for operating the register bar, and means engageable by the lugs upon operation of the register bar to release the actuating means for printing selected types.

5. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power driven member, actuating means for each type element engageable by the power driven member and adapted to impart driving action to the type elements, means for selecting types to be printed, means for registering selected types and operable to impart type selections to the actuating means, means controlled by the actuating means for rendering said registering means operable to impart type selections to the actuating means, and means for sequentially releasing the actuating means for printing selected types.

6. In a typewriting machine, a platen, printing elements having a plurality of types arranged thereon mounted in operative relation to the platen, permutably shiftable selector bars responsive to selective control for simultaneously selecting a plurality of types to be printed, means for sequentially imparting operative action to the selected printing elements including a power driven roller, actuable cams engageable by the power driven roller, means operatively connecting the cams to the printing elements, primary detents for retaining the cams in primary position, selectable means for releasing the primary detents, thereby releasing the cams for movement into secondary position, latch members mounted on the cams and detents engageable therewith for retaining the cams in secondary position, said latch members operable to release the cams for engagement with the power roller, means for releasing the latch members including movable members mounted in the cams to rotate therewith and disposed to form a series of contacting el ments through the cams in primary position and to operatively engage the latch members of the cams in secondary position, and means whereby the rotation of the cam imparts operative motion to said movable members for releasing the latch members, thereby sequentially releasing the cams 14 for engagement with the power driven roller for printing selected types.

7. In a typewriting machine having a platen and type elements, power means for actuating the type elements in cluding a power roller, a series of earns rotatably mounted in operative relation to the power roller, pivoted latch members mounted on the cams, pawls engageable by the latch members efiective to retain the cams in primary position, tension means constantly tending to move the cams into secondary position and responsive to rotary movement of the cams to impart driving motion to the type elements, means connecting said tension means to the type elements, permutably shiftable selector bars responsive to selective control and means selectable thereby for releasing the pawls from engagement with the latch members, thereby releasing selected cams for movement into secondary position, detents engageable by the latch members effective to retain selected cams in secondary position, said latch members responsive to lateral movement for releasing the cams for rotary movement, and means for imparting lateral movement to the latch members of selected cams including a series of elements concentrically recessed in the cams to rotate therewith and disposed to form contact one with the other through the series of cams while in primary position and to operatively contact the latch members of the cams in secondary position.

8. In a typewriting machine having a platen and type elements, power means for operating the type elements including a power roller, cams rotatably mounted in operative relation to the power roller, pawls effective to retain the cams in primary position, tension means constantly tending to move the cams into secondary position, permutably selectable means and means responsive thereto for releasing the pawls, thereby releasing selected cams for movement into secondary position, detents and latch members cngageable thereby eiiective to retain the selected cams in secondary position and operable to release the cams from secondary position, means for imparting operative movement to the latch members, for releasing the cams from secondary position for operative engagement with the power roller, and means connected with the type elements responsive to movement of the cams for moving the type elements into printing relation with the platen.

9. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power driven roller, actuating cams engageable by the power roller, tension means eflective to move the cams into operative engagement with the power roller, detents operable to retain the cams in primary position, mechanism responsive to selective control for releasing the cams from primary position, secondary detents for arresting the cams in secondary position, means for releasing the cams from secondary position for operative engagement with the power roller, and means connected with the type elements responsive to movement of the cams for moving the type elements into printing relation with the platen.

10. In a typewriting machine, a platen, a plurality of printing elements, a power driven roller, a horizontal shaft mounted adjacent to the power roller, a series of cams rotatably mounted on the shaft to be operatively connected with the power roller, a spring-tensioned lever for each cam effective to rotate the cam into operative contact with the power roller, a detent for each cam, effective to retain the cam in primary position, means responsive to selective control for releasing the cams from primary position, means for arresting the cams in secondary position, means for releasing the cams from secondary position for operative contact with the power roller, means concentrically mounted upon the cams to rotate therewith and drive respective spring-tensioned levers engageable therewith, and means operatively connecting the spring-tensioned levers to the printing elements.

11. In a typewriting machine having a platen and type elements, a continuously rotating power roller, a series of rotatable cams to be operatively engaged by the power roller, spring-tensioned levers constantly tending to rotate the cams into engagement with the power roller, latch members mounted in the cams, primary detents engageable by the latch members and operable to retain the cams in primary position, key mechanism for selecting and releasing a plurality of said cams from primary position, secondary detents engageable by the latch members and effective to arrest and retain the selected cams in secondary position, means provided in the cams for consecutively disengaging the latch members from said secondary detents, thereby releasing in predetermined sequence the selected cams from secondary position for operative engagement with the power roller, members concentrically mounted upon the cams to rotate therewith and drive respective spring-tensioned levers engageable therewith, and means connecting the spring-tensioned levers to the type elements.

12. In a typewriting machine having a platen and printing elements, a continuously rotating power roller, 2. series of rotatable cams to be operatively engaged by the power roller, sub-levers connected to the printing elements and responsive to rotary movement of the cams, means constantly tending to rotate the cams into engagement with the power roller, latch members mounted on the cams, primary detents engageable by the latch members and operable to retain the cams in primary position, key mechanism for selecting and releasing a plurality of said cams from primary position, secondary detents engageable by the latch members and effective to arrest and retain the selected cams in secondary position, means provided in the cams for consecutively disengaging the latch members from said secondary detents, thereby releasing in predetermined sequence the selected cams from secondary position for operative engagement with the power roller, and means concentrically mounted upon the cams to drive respective sub-levers engageable therewith.

13. In a typewriting machine, a platen, a plurality of printing elements, a power driven roller, a series of cams rotatably mounted in operative relation to the power roller, sub-levers responsive to rotary action of the cams, means constantly tending to rotate the cams into engagement with the power roller, a primary detent for each cam operable to retain the cams in primary position, mechanism responsive to selective control comprising a series of permutably shiftable bars and means selectable thereby for releasing the cams from primary position, a secondary detent for each cam, operable to retain the cams in secondary position, means for releasing the cams from secondary position for operative contact with the power roller, operative means provided on the cams effective to drive said sub-levers, and means connecting the sub-levers to the printing elements.

14. In a typewriting machine, a platen, a plurality of type elements, a continuously rotating power roller, a series of rotatable cams to be operatively engaged by the power roller, actuating members concentrically mounted upon the cams to rotate therewith, spring-tensioned levers adapted to coact with said actuating members to move the cams into engagement with the power roller and upon rotation of the cams responsive to impart driving action of the cams to respective type elements connected therewith, means operatively connecting the spring-tensioned levers with the type elements, primary detents operable to retain the cams in primary position, key controlled mechanism for selectively releasing a plurality of said cams from primary position, secondary detents operable to arrest and retain the selected cams in secondary position, and means for releasing in predetermined sequence the selected cams from secondary position for operative engagement with the power roller.

15. In a typewriting machine, a platen, printing elements having types arranged thereon mounted in operative relation to the platen, permutably shiftable selector bars responsive to selective control for simultaneously selecting a plurality of types to be printed, means for sequentially printing the selected types including a continuously rotating power roller, cams adapted to frictionally engage the power roller, detenting means for retaining the cams in primary position, means selectable by the selector bars for releasing predetermined cams for movement into secondary position, means for retaining the cams in secondary position, means concentrically recessed in the cams to rotate therewith and adapted to sequentially release the cams for rotary movement, and means for transmitting movement of the cams to the printing elements, printing the selected types.

16. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a continuously rotating power roller, cams adapted to operatively engage the power roller for rotation thereby, means for transmitting movement of the cams to the type elements, pawls adapted to engage the cams normally holding the cams againstflmovement into secondary position, pivoted latch members mounted on the cams, detents mounted adjacent to the cams and engageable by the pivoted latch members for holding the cams in secondary position, and latch operating members provided in the cams disposed to form a series of contacting elements through the cams in primary position, and effective to operatively contact the latch members of cams in secondary position for sequentially releasing selected cams for rotation.

17. In a typewriting machine having a platen and key levers, type elements mounted adjacent to the platen, a continuously rotating power roller, cams adapted to frictionally engage the power roller for rotation thereby, means for transmitting movement of the cams to the type elements, detents mounted on the cams, pawls engageable by the detents for normally holding the cams against movement, and means for releasing the pawls from the detents embodying primary selector bars, means connecting the primary selector bars to the key levers eflFective upon partial dip of the key levers to impart operative movement to the primary selector bars, auxiliary selector bars normally held against movement by the primary selector bars and released by movement of the primary selector bars, release hooks having operative connection with the pawls, selectable means engaging the release hooks and responsive to movement of the selector bars for selecting the release hooks, and an actuating bail responsive to the key levers adapted to engage the selected release hooks and effective upon full dip of the key levers to release the pawls, thereby initially releasing the cams for operative engagement with the power roller.

18. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, key levers for controlling operation of the type elements, a continuously rotating power roller, cams adapted to engage the power roller for rotation thereby, spring-tensioned levers constantly tending to move the cams into operative engagement with the power roller and responsive to rotary movement of the cams, means connecting the springtensioned levers to the type elements to impart operative movement thereto, cam detenting means normally holding the cams against movement and operable to release the cams, permutably shiftable selector bars responsive to movement of the key levers, a release bail and means selectable by the selector bars and engageable by the release bail for releasing the cam detenting means and thereby releasing the cams for rotary movement.

19. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a continuously rotating power roller, cams adapted to operatively engage the power roller, means constantly tending to move the cams into operative engagement with the power roller, means connected to the type elements and responsive to rotary movement of the cams to impart operative 17 movement to the type elements, cam detenting means normally holding the cams against movement and operable to release the cams, permutably shiftable selector bars responsive to selective control, a release bail and means selectable by the selector bars and engageable by the release bail for releasing the cam detenting means and thereby releasing the cams for rotary movement.

20. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power roller, cams engageable by the power roller, and means operatively connecting the cams to the type elements, cam detenting means normally holding the cams out of engagement with the power roller, selective means for initially releasing said detenting means, secondary detents and sequence control means for sequentially releasing the secondary detents, thereby releasing the cams for engagement with the power roller.

21. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power driven roller, actuating cams engageable by the power roller, tension means for moving the cams into operative engagement with the power roller, detents operable to retain the cams in primary position, mechanism responsive to selective control for releasing the cams from primary position, secondary detents for arresting the cams in secondary position, other means for releasing the cams from secondary position for operative engagement with the power roller, and means connected with the type elements diiferentially settable to govern correspondingly the force of impact of the type elements on the platen and responsive to movement of the cams for moving the type elements into printing relation with the platen.

22. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power driven member, actuating means for each type element engageable by the power driven member, means for selecting types to be printed, means for registering selected types and operable to release the actuating means for engagement with the power driven member, and delayed action means controlled by the actuating means for rendering the registering means operable to release the actuating means for printing selected types.

23. In a typewriting machine, a platen, type elements mounted in operative relation to the platen, a power driven member, actuating means for each type element engageable by the power driven member, permutably selectable means and mechanism responsive thereto for selecting types to be printed, means for registering selected types and operable to release the actuating means for engagement with the power driven member, and delayed action means controlled by the actuating means for operating said registering means to release the actuating means for printing selected types.

24. In a typewriting machine having a platen and printing elements, a power driven member, actuators for the printing elements engageable by the power driven member, primary detents for retaining the actuators in primary position, means for releasing the primary detents, secondary detents for arresting the actuators in secondary position, and other means for releasing the actuators from secondary position for engagement with the power driven member.

25. A typewriting machine having printing elements and other functional devices, a power driven member, sequentially controlled actuators for the printing elements and other functional devices mounted in operative relation to the power driven member, a register, means to set said register to record thereon printing and other functional designations, and means responsive to said sequentially controlled actuators to actuate the register to thereby condition the actuators for sequential engagement with the power driven member for actuating the printing elements and other functional devices for performing the registered designations.

26. In a typewriting machine, a platen, printing elements mounted adjacent the platen, a constantly rotating power roller, cams engageable by the power roller for rotation thereby, means for transmitting movement of the cams to the printing elements, pawls normally holding the cams against movement and operable to release the cams for engagement with-the power roller, key levers, a release bail, release hook carrier arms, release hooks operated by the release hook carrier arms and engageable by the release bail and connecting means for operating the pawls, selector bars adapted to normally prevent movement of the release hook carrier arms, and means operated by the movement of the key levers for moving the selector bars to release the selected release hook car rier arms for operation.

27. In a typewriting machine having a platen and printing elements, a power driven member, actuators for the printing elements engageable by the power driven member, primary detents effective to retain the actuators in primary position, means for releasing the actuators from the primary detents, latch members for the actuators, secondary detents engageable by the latch members for arresting the actuators in secondary position, and latch operating members responsive to movement of the actuators for sequentially releasing the actuators from secondary position for operative engagement with the power driven member.

28. In a typewriting machine, a platen, a series of printing elements, a continuously rotating power roller, a series of cams rotatably mounted in operative relation to the power roller, operative means connecting the cams to the printing elements including spring-tensioned levers tending to move the cams into operative engagement with the power roller and engageable by the cams to drive respective printing elements connected therewith, latch members provided on the cams, primary detents engageable by the latch members and operable to retain the cams in primary position, selective means for releasing the primary detents thereby initially releasing the cams, detents engageable by the latch members for arresting and retaining the cams in secondary position, said latch members operable to release said cams for rotation, and latch operating members provided on the cams disposed to engage the latch members of the cams in secondary position, and responsive to rotary action of the cams to release the latch members of said cams, releasing said cams for operative engagement with the power roller.

29. A typewriting machine having a platen and type elements, a power driven member, actuators for the type elements enageable by the power driven member, means for selecting a plurality of types to be printed, delayed action means for imparting type selections to the actuators, sequentially controlled means for activating said delayed action means to impart type selections to the actuators, and means for releasing the actuators for printing the selected types.

30. In a typewriting machine having a platen, a plurality of type bars mounted adjacent to the platen, and each type bar having a corresponding means for activating it; the improvement comprising: means for simultaneously selecting a plurality of type bars, means for simultaneously registering said selection, means for simultaneously transferring said selection to said activating means, and means for releasing said selected register means, said means for transferring being responsive to said activating means.

31. The method of typewriting comprising: selecting a plurality of letters to be printed, simultaneously first storing said selection, simultaneously transfering said selection, again storing said selection, and sequentially printing the selected letters from said second storage, said transfer being delayed until the printing of previous selected letters is complete.

32. The method of typewriting comprising the steps of: first, selecting a plurality of letters; second, simultaneously displacing a member for each letter selected; third,

19 selecting an activator for each displaced member; and fourth, sequentially printing a letter for each selected activator; the third step being delayed until the 'fourth step in a previous cycle is complete.

33. A typewriting machine comprising a platen, a piu rality of type bars mounted adjacent to said platen, a power driven member, a series of cams including a control cam engageable with the power driven member, one of said type bars being connected to each of said cams except said control cam, a register member for each cam which is connected to a type bar, means for displacing each register member, said means for displacing also releasing said control cam, first means for releasing said cams connected to type bars responsive to both the operation of said control cam and said register member, second means for releasing the cams in a predetermined order, so that when any register member is displaced this also starts the control cam which causes a type bar cam to be first released by the register member and then finally released in predetermined order.

References Cited in the file of this patent UNITED STATES PATENTS 1,077,005 Smathers Oct. 28, 1913 1,614,473 Hokanson Jan. 18, 1927 1,753,495 Bardwell Apr. 8, 1930 1,913,831 Clark June 13, 1933 1,932,914 Shelton et al Oct. 31, 1933 2,217,179 Mills Oct. 8, 1940 2,714,948 Schrem et al Aug. 9, 1955 FOREIGN PATENTS 355,530 qtaly Jan. 10, 1938

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