US1248936A - Type-writng machine. - Google Patents

Description

W. G. SHELDON.

TYPE WRITING MACHINE.

APPLICATION FILED JUNE 1 I914 Lfiflfi fio Patented Dec. 4, 1917;.

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W. G. SHELDON.

TYPE WRlTlNG MACHINE,

APPLICATION FILED JUNE 1. 1914.

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W. G, SHELDON.

TYPE WRITING MACHINE.

APPLICATION FILED JUNE 1. 1914.

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WILLIAM GARFIELD SHELDON, OF LONDON, ENGLAND, ASSIGNOR TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Dec. 4:, 191?.

Application filed June 1, 1914. Serial No. 842,111.

To all whom it may concern:

Be it known that 1. WILLIAM GARFIELD SHELDON, a citizen of the United States of America, resident of London, England, have invented certain new and useful Improvements in 'lype-\Vi'iti11g Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to means for holding and feeding cards such as stencil cards, railway tickets, index cards or the like. i

In order to readily handle and feed relatively stiff cards or work sheets and prevent them from being unduly bent, mutilated or broken it is desirable to maintain them in a flat, or substantially flat, condition in the machine. On the other hand, in a machine which employs a platen with a curved contact face it is desirable that the cards, at the printing line, be maintained so as to conform approximately to the curvature of the platen, in order that the correspondingly curved printing or impression faces of'the types may properly impact against the cards and produce a perfect imprint or impression. If, for example, types with curved printing faces strike a card while the latter is maintained in a flat condition, the result is much the same as when all of the types are off their feet, and in every instance an imperfect impression from each type follows. a part or parts of each printing face making an undulyheavy imprint or impression and another part making a very faint impression, or no impression at all. These difficulties are very marked in the production of stencils or stencil cards, one part of the printing face of each type cutting or impressing a stencil too much and another part not enough.

One of the objects of my invention is to provide a construction which will overcome these difficulties, by providing means for holding and feeding the cards in a slightly curved condition, so as to approximately conform to the curvature of the platen at the printing line and yet enable the cards to be handled in the machine without bending them to an extent which will injure them, and to handle them with the same facility that cards maintained in a flat condition can be handled and fed in the machine.

A further object of my invention, generally stated, is to provide card holding and feeding means which are simple in construction, easy to manipulate and efficient in use.

Another object of my invention is to provide means of the character specified which may be readily embodied in existing styles of typewriting machines without modifying, or materially modifying, the structural features of such machines as they now exist.

To the above and other ends which will hereinafter appear. my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicate corresponding parts in the various views,

Figure 1 is a full sized vertical fore and aft sectional view with parts omitted of the upper portion of one form of typewriting machine embodying my invention, the section being taken on the line mm of Fig. .2 and looking in the direction of the arrow at said line.

Fig. 2 is a fragmentary top plan view showing the carriage and a part of the frame.

Fig. 3 is a detail fragmentary front elevation of the carriage.

Fig. 4 is a "ertical fore and aft sectional view with parts omitted, the view showing the platen, card carrier and some of the associated parts, and the section being taken on the line g I of Fig. 2 and looking in the direction of the arrow at said line.

Fig. 5 is a detail perspective view of the guide for the card frame or carrier.

Fig. 6 is a detail vertical fore and aft sectional view with parts broken away, the section being taken on the line of Fig. 2 and looking in the direction of the arrow at said line. This view corresponds somewhat to Fig. 4 but shows a different disposition of the parts.

Parts have been omitted in the various views, only so much of the machine being shown as may be necessary to arrive at an understanding of my invention.

\Vhile I have shown my invention, in the present instai'ice. embodied in a No. 10 Remington front-strike machine, it should machines.

The frame of the machine comprises corner posts 1 and a top plate Fixed oppositely grooved guide rails 3 are supported on the top plate and receive anti-friction balls or rollers 4. The balls 4: are also re ceived in oppositely grooved guide rails 5 and 6 which constitute the front and rear cross bars respectively of the carriage or truck, these bars being united by end bars 7 and 8. The carriage is thus mounted to travel from side to side of the machine over the top plate 2, being propelled by the usual spring drum (not shown) and being controlled in such movement by the usual escapement mechanism indicated in part in Fig. 1. Thus it will be seen that the feed rack 9 is supported on arms 10 pivoted to ears 11 which extend from the rear cross bar 6 of the carriage. The feed rack meshes with a feed pinion 12 fixedly connected to a shaft 13 which turns in a bearing 14 fixed to the top plate of the machine. The rear end of the shaft has a double escapement wheel 15 fixedly connected thereto. A dog rocker'16 is pivoted at 17 to a bracket 18 secured to the top plate, a feed dog 19 being carried by one of the arms of the dog rocker. The other arm of the rocker is connected to a link 20 which is actuated in the usual manner at each printing operation to afford an intermittent step-by-step letter feed movement of the carriage during the printing operations. A series of upwardly and rearwardly striking type bars 21 are pivoted at 22 to hangers which are secured to a type bar segment 24. These type bars are connected in the usual manner through links 25 and the other intermediate actuating devices with the usual key levers (not shown). The type bars are adapted to move upwardly and rearwardly and to strike against the front curved face of a platen 26 which in the present instance is shown cylindrical in form. The shaft 27 of the platen is supported in end plates 28 of the platen frame. These end plates are connected by the usual tie rods or cross bars 29, 30 and 31. Two sets of parallel links 32 support the platen frame on the carriage or truck in the usual manner for case shifting movement. Inasmuch, however, as capital letters only are employed in the pres nt instance screws 38 carried by the carriage are screwed down against the platen shaft, or the bearing therefor, as represented in dotted lines in Fig. 1 to prevent a case shifting movement of the platen. Each of the type bars. in the present instance, carries but a single type 34 instead of two as in the No. 10 Remington machine.

The line spacing devices for controlling the platen shaft 27 are of the usual construction. Thus a finger piece forms part of a rock shaft 30 which turns in a bearing 37 on the end bar 7 of the carriage. The rear end of the rock shaft carries a crank arm 38, pivotally connected to a depending link 39. The link 39 in turn is pivotally connected, at 10, to a bell crank lever 41 pivoted, at 42, to the. end bar 7 of the carriage. The upwardly extending arm of this bell crank lever is connected to a link 43, the rear end of which is pivoted, at 44, to a line spacing pawl 15 pivoted, at 46, on a pivotcd supporting arm 47. There is a limited pivotal movement between the line spacing pawl 45 and the carrier l7, afforded by a pin 18 and a slot -19 forming a pin and slot connection between the line spacing pawl and its carrying arm. This enables the pawl, at the first part of its movement, to be thrown into engagement with the teeth of the line spacing wheel secured to the platen shaft in a manner which will hereinafter more clearly appear. A plate or regu lating device 51 is pivoted to turn on the axis of the platen and an operative connection is maintained between this plate and the pawl carrying arm 17 so that an adjustment of the plate controls the normal position of the arm -17 and consequently the normal position of the line spacing pawl, and thus determines the extent of line spacing movement which may be transmitted to the platen shaft at each actuation of the finger piece The usual finger piece 52 carried by an off-set extension 53 on the regulating plate or member 51, and carries a locking stud 54 which is adapted to engage in any one of three nicks or notches 55 in a fixed plate 56, carried by the platen f'ame. In this manner an extent of feed of one. two or three teeth of the line spacing wheel may he ell'ected at each actuation of the line spacing handle A detent roller 57 is supported on the forward end of a fiat spring 58 which is secured by screws 59 to a member 60 fixed to the cross bar 29. This detent roller bears against the teeth of the line spacing wheel to prevent an accidental displacement of the wheel and the parts controlled thereby from the line spacing position to which they may be moved.

he usual pivoted stop (31 is carried by the forward fixed guide rail and co-acts in the usual manner with the line stop (32 and margin stop 63. I prefer to place headed screws 61 and 65 on ihe carriage scalecarrying bar 66, in order to co-act respectively with the line and margin stops 2 and G3 to limit the extent of outer adjustment of the latter, as indicated in Fig. 2, so that the line and margin stops do not have the usual extent of adjustment toward the ends of the carriage scale.

nae-spas The parts thus far described. other than where especial exception is made, constitute parts of the No. 10 Remington typewriting machine and further detail description thereof is deemed unnecessary.

In the present construction the platen 26 is a comparatively short platen corresponding substantially to the length of the card or stencil sheet to be written on. This platen, however, in the present instance, is mounted to turn freely on the platen shaft. Each end of the platent 26 has a platen head 67 secured thereto in the usual manner, the hub of each platen head abutting a supporting plate 68. Each plate 68 is apertured to receive the platen shaft 27, the tie rod 30 and a special relatively short tie rod 69 which extends through the plates 68 but does not extend to the end plates 28 of the platen frame. Brackets 70 are connected to the cross bar 31 by screws 71 and these brackets are likewise apertured to receive the tie rods 30 and 69 and to form a rigid connection between them and the cross. bar 31 of the platen frame.

The work sheets or cards are supported substantially in an upright position and are fed upwardly in front of the platen 26 and across the printing line by an intermittently actuated'cardcarrier, or open frame, which is designated as a whole by the reference numeral 72, and preferably is of a size which corresponds approximately to the size of the cards to be used in the machine. This frame comprises a lower horizontally disposed cross bar 73 and two pairs of curved parallel, or substantially parallel, plates 74, each pair of parallel curved plates 74 being maintained spaced apart by a bar 75 and receiving between them an end of the bar 73. The members 73, 7t and 75 are all fixedly connected together to form a rigid or inflexible frame. Each end of the frame is thus formed by a pair of curved plates or walls 74. between which an end portion of a card is adapted to be received, the card as a whole being designated by the reference numeral 76. In the present instance I have illustrated the card 76 as a stencil card which is shown in Figs. 3 and 6 and ordinarily comprises a rectangular cardboard frame 77 having the center opening therein covered by a thin stencil sheet 78 which is stretched across and is pasted at its ed es to the rectangular frame 77.

t will be understood that a stencil card or sheet is introduced into the frame by inserting the opposite end portions of the card from above between the parallel plates 74 and moving the card down in the frame until the bottom edge of the card bears against the cross bar 73, as represented in Fig. 6. By reason of the inflexibility of the frame the card will be maintained in a slightly curved condition, conforming substantially to the curvature of the frame, and will be held by and fed with the frame in such condition from the lowermost position of the frame shown in Fig. 4 to the uppermost position thereof shown in Fig. 6. It will be seen that during this movement of the frame the card is maintained in an unvarying curved condition at the printing line which corresponds substantially to the curvature of the platen; that the radius of curvature of the guide, and the card which is held thereby, is materially greater than the radius of curvature of the platen; that the axis of curvature of the card and the frame by which it is held is different from the axis of curvature of the platen; and that the card is maintained substantially tangential to the platen at the printing line in all positions to which the card may be fed by the carrier or open frame 72.

The means by which movement is trans mitted from the line spacing devices to the card carrying frame, to intermittently effect an upward bodily movement of the latter and to guide the frame during such movements are as follows: Forwardly extending arms '79 are arranged on the platen shaft on opposite sides of the platen 26. These arms are apertured at their forward ends to receive trunnions or pivot pins 80 which project from the opposite sides of the frame 72 about midway in the height thereof. These arms may be secured to the platen shaft 27 by any suitable means. In the present instance I attach the arms, in a manner which will hereinafter appear, to two so-called short platen sections 81 and 82 which are fixed to the shaft 27. These so-called platen sections however, do not act as platens since they never reach the printing point. The line spacing wheel 50 may be connected by any suitable means to turn with the platen shaft. In the present instance the section 81, carries the line spacing wheel 50 and is fixed to the-platen shaft by a screw 83, said screw being received in a tapped opening in the hub 84 of the lefthand platen head 85 of said section, and the screw hearing at its inner end against the platen shaft. From an inspection of Fig. 2 it will be understood that each arm 79 is connected to the hub of the inner platen head of the associated section, 81 or 82, by

a screw 86 which extends through an opening in the arm 79 and is received at its threaded end in a tapped opening in the associated hub. In this manner each arm 79 is fixedly connected to turn with the platen shaft, it being understood that the section 82 is fixed to the shaft in the same manner as the platen section 81. The card carrier or frame 72 is thus )ivotally supported at 80 on the arms 9, the latter being fixedly connected to the shaft 27 and adapted to turn on the pivotal axis of the platen 26, so that the frame is mounted to receive a bodily movement around the axis of the platen and is operated independently of the platen.

In order to guide the card carrier or frame, as it is moved by the arms 79, I have provided a guide member designated as a whole by the reference character 87 and shown in detail in Fig. 5. This guide is slotted at 88 to receive headed screws 89 by which the guide may be secured to the cross bar 31 of the platen frame and may, when desired, be readily detached from the cross bar by loosening the screws 89. The guide at each end thereof is provided with a forwardly and upwardly extending arm 90. Each of these arms is grooved in its inner face, as at 91, to receive a pin 92 which projects outwardly from a side of the frame 72 near the lower edge thereof. The pins 92 working in the grooves 91 of the guide control the position of the frame or carrier 72 on the arms 7 9 as the frame is shifted at line spacing operations, and insures the maintenance of the card in position to properly receive the impact of the types at the printing line irrespective of the line spacing position to which the frame may be shifted, as will be understood from a consideration of Figs. 4c and 6.

In practice. the finger piece 52 may be employed to set the regulating device 51 so that the stud 54 will be seated in either one of the two rear notches 55 in order to provide for single or double line spacing movements; that is to say, to provide for effecting a feed for one or two teeth of the line spacing wheel at each operation, as may be desired. In the event of the regulating device 51 being set for a single tooth space movement, then five lines may be written on each card, as the parts are constructed and arranged in the present instance. If the finger piece 52 is positioned so that its stud 54 is seated in the middle notch then three lines may be written on each of the cards. This is ordinarily enough to sutlice for stencil card writing, either three or five lines usually being written on such cards.

In the present construction I have provided means for limiting the rotative movements of the line spacing wheel and shaft 27 so as to limit the oscillating or up and down movements of the card carrier across the face of the platen and lock the parts against further actuation when the card is in position to receive the last line of writing. In order to accomplish this result I have constructed the line spacing ratchet wheel in the form of a mutilated wheel. there being an untoothed space 93 (see Fig. 6) between the terminal ratchet teeth 50 and 50 respectively. Two inwardly projecting stops or pins 94 and 95 respectively extend from a bracket plate 96 which is secured to the inner face of the right-hand end plate 28 of the platen frame. These pins project into the path of the terminal teeth 50 and 50 of the ratchet wheel so as to limit the movement of the ratchet wheel and the parts controlled thereby in opposite directions, the terminal tooth 50 co-acting with the fixed stop 94 and the terminal tooth 50 co-acting with the stop or pin 95. \Vhen the frame is in the lowermost position represented in Fig. 3, the terminal tooth 50" will co-act with the stop 95 to limit further downward movement of the card carrier or frame, whereas when the card carrier has been elevated to the position shown in Fig. (5, so as to present a card into position to receive the last line of writing thereon. the terminal tooth 5O will co-act with the stop 94 to prevent a further upward movement of the card carrier.

It is believed that the operation will be understood from the foregoing description. However, a brief description of the operation will be given. A. card, such as the stencil card 76, will be inserted in place in the frame, the opposite side edges of the card being received between the parallel curved plates 74 and the bottom of the card resting against the cross bar 73 of the frame. The frame may then be moved to its lowermost position by either of the finger wheels 97 secured to the ends of the platen shaft 27, it being understood that the. terminal tooth 50* will eo-act with the stop 95 to limit the movement of the card carrier or frame 72 to its lowermost position. The operator may then proceed to write". cut or impress the first line on the stencil card. \Vhen the line is completed the handle 35 is moved to the right, thus returning the carriage to the right to begin av new line of writing and effecting an actuation of the line spacing wheel one or more tooth space distances of the wheel, depending on the adjustment of the controlling device 51. Each successive line is written in the same way until the terminal tooth 50" reaches contact with the stop 94 and further line spacing movement of the wheel 50 is prevented and further upward line feed movement of the card carrier cannot be effected. The stencil card or sheet thus written or impressed is removed and a new card is introduced in its place, the frame is returned to its initial or first writing line position and the operator proceeds as before.

While the construction of my invention is particularly available for cutting, writing or impressing stencil cards it. is also available for feeding cards of a different. character such. for example. as railway tickets, index cards or the like, and the cards in this event may be printed, writeas es ten, or impressed in the usual manner with the aid of suitable inking instrumentalities, such as are ordinarily employed, or the impressions or printing may be directly effected against the face of the card without employing inking means, as in the present instance.

lVhen I refer herein to a card I use this term in a generic sense to refer to work sheets of different character and mean to include by this term what are ordinarily known as stencil cards and all other ro tatively stiff work sheets.

It will be observed that the cards are but slightly bent to conform substantially to the curvature of the card carrier or frame so that the cards are maintained sufficiently curved at the printing line to insure a proper impression or cutting of the stencils by the type faces, and yet the cards are maintained and handledin the machine in substantially a flat condition so that they are not injured or marred and .may be handled and fed with practically the same facility as flat cards, or cards which were handled and fed in a flat condition.

-It will also be understood that I may readily embody my invention in existing forms of typewriting machines such, for example, as the No. 10 Remington machine Without modifying. or materially modifying. the structural features of such machines as they now exist except in so far as it may be necessary to replace some of the parts of those machines by other parts or devices of my invention.

when I refer herein to the carrier- 72 as an open frame I mean a frame which coacts with each card at the side edge portions thereof and which is open at the center so as not to interfere with the impact of the types against the card and the platen supported in the rear thereof.

While the construction is such that the feed of the card carrier or frame is effected independently of and relatively to the platen, it may be at. times that the platen will receive a slight rotative movement during the feed of the card across the face of the platen. In the present construction this is immaterial and merely results in presenting different surfaces on the platen for impact of the type bars. However, it will be understood that in no instance is the feed of the card in any manner dependent on a movement of the platen. the feed of the card ordinarily being effected relatively to and across the face of the platen.

Various changes may be made Without departing from the spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent, is: p

1. In a typewriting machine, the combination of a pivoted platen, a card carrier mounted to turn on the pivotal axis of and relatively to the platen, and line spacing mechanism for controlling the line spacing movement of'said carrier.

In a front-strike typewriting machine, the combination of a carriage, a pivoted platen carried thereby, a. card receiving frame supporting the card in substantially an upright position in front of the platen for impact of upwardly and rearwardly striking type bars. pivoted arms to which said frame is pivoted and by which it is carried, and line spacing devices which actuate said arms and act through the arms to transmit line spacing movements to the frame.

3. In a front-strike typewriting machine, the combination of a carriage, a shaft carried by said carriage. a platen on said shaft, a. card receiving frame supporting a card in substantially an upright position in front of the platen for impact of upwardly and rearwardly striking type bars, supporting means carried by said shaft and connected with said frame, said supporting means being independent of the platen, and line spacing means for turning said shaft.

4. In a typewriting machine. the combination of a carriage, a platen, a shaft carried by said carriage. and movable independently of the platen, a card receiving and carrying frame carried by said shaft and movable thercby back and forth over the face of the platen, and line spacing mechanism for intermittently actuating said shaft to move the frame in one direction to line space the card across the printing line.

5. In a typewriting machine, the combination of a carriage, a platen, a shaft carried by said carriage. and movable independently of the platen, a card receiving and carrying frame carried by said shaft and movable thereby back and forth over the face of the platen, and line spacing mechanism for intermittently actuating said shaft to move the frame in one direction to line space the card across the printing line, said line spacing mechanism comprising a line spacing wheel connected to said shaft, a line spacing pawl cooperative with said wheel, and hand actuated means operable at will to move said pawl.

6. In a typewril ing machine, the combination of a carriage, a platen, a shaft carried by said carriage. and movable relatively to the platen, a card receiving and carrying frame carried by said shaft and movable thereby back and forth over the face of the platen, line spacing mechanism for inter Inittently actuating said shaft to move the frame in one direction to line space the card across the printing line, and a finger wheel connected with said shaft for turning it in the opposite direction to return the frame to its initial position.

7. In a typewrit ing machine, the combination of a carria e, a shaft carried by said carriage, a cylin rical platen carried by said shaft, a card receiving and carrying frame carried by said shaft and movable thereby back and forth over the face of the platen, line spacing mechanism for intermittently actuating said shaft to move the frame in one direction to line space the card across the printing line, and a guide fixed to the carriage and cooperative with said frame to guide it in its back and forth movements.

8. In a fr0nt-strike typewriting machine, the combination of a carriage, a platen carried thereby, an open bodily movable card carrying frame carried by the carriage and movable up and down to carry the card across the face of the platen and to hold the card in position to receive the impact of upwardly and rearwardly striking type bars, the ends of said frame being formed by parallel front and rear walls between which opposite side edge portions of the card may be received and by which the card is held against forward and backward move ment in the frame, and hand actuated means operable at will for moving said frame up and down.

9. In a front-strike typewriting machine, the combination of a carriage, a platen carried thereby, an open bodily movable card carrying frame carried by the carriage and movable up and down to carry the card across the face of the platen and to hold the card in position to receive the impact of upwardly and rearwardly striking type bars, the ends of said frame being formed by parallel front and rear walls between which opposite side edge portions of the card may be received and by which the card is held against forward and backward movement in the frame, a shaft carried by the carriage, intermediate connections between said shaft and frame so that the shaft will control the up and down movements of the frame, and hand controlled means for turning said shaft.

10. In a front-strike typewriting machine, the combination of a carriage, a platen carried thereby, an open bodily movable card carrying frame carried by the carriage and movable up and down to carry the card across the face of the platen and to hold the card in position to receive the impact of upwardly and rearwardly striking type bars, the ends of said frame being formed by parallel front and rear walls between which 0pposite side edge portions of the card may be received and by which the card is held against forward and backward movement in the frame, a shaft carried by the carriage, intermediate connections between said shaft and frame so that the shaft will control the up and down movements of the frame, a line spacing wheel connected to said shaft, a line aeaeae spacing pawl cooperative with said wheel, and means for controlling said pawl.

11. In a typewriting machine, the combination of a platen having a curved face, means independent of the platen for holding a. card in a curve of materially greater radius than that of the platen, and means operable independently of the platen for feeding the card past the printing line.

12. In a typewriting machine, the combination of a platen having .1 curved face, means independent of the platen for holding a card in an unvarying curve of materially greater radius than that of the platen, the axis of curvature of the card thus held being different from that of the platen, and means independent of the platen for feeding the card while it is held in such state past the printing line and in a position where the card is maintained substantially tangential to the platen at the printing line.

13. In a typewriting machine, the combination of a platen having a curved face, a curved inflexible card carrier the radius of curvature of which is materially greater than that of the. platen. and line spacing mechanism for effecting a line spacing movement of said carrier and the card carried thereby.

14. In a typewriting machine, the combination of a platen having a curved face, a curved inflexible card carrier the radius of curvature of which is materially greater than that of the platen and which is sub stantially tangential to the platen at the printing line, and line spacing mechanism for effecting a line spacing movement of said carrier and the card carried thereby.

15. In a typewriting machine, the combination of a platen having a curved face, a curved inflexible card carrier the radius of curvature of which is materially greater than that of the platen, and line spacing mechanism for effecting a line spacing movement of said carrier and the card carried thereby relatively to the platen.

16. In a typewriting machine. the combination of a platen having a curved face. a curved infiexibly curd carrier the radius of curvature of which is materially greater than that of the platen, said carrier having means for holding the card so as to conform to the curvature of the carrier. line spacing means for effecting a line spacing movement of said carrier, and means for guiding said carrier so that it will be substantially tangential to the platen at the printing line in the different line space positions to which the carrier may be moved.

17. In a typewriting machine, the combination of a carriage, a cylindrical platen carried thereby, an inflexible card carrier carried by the carriage and having means for holding a card and maintaining it in a curve the radius of which is materially masses greater than the radius of curvature of the platen, means for guiding the carrier so as to maintain the card substantially tangential to the platen at the printing line, and means for effecting line spacing movements of said carrier to effect a step-by-step feed of the card across the printing line.

18. In a typewriting machine, the combination of av carriage. a cylindrical platen carried thereby, an inflexible card carrier carried by the carriage and having means for holding a card and maintaining it in a curve the radius of which is materially greater than the radius of curvature of the platen, means which turn on the axis of the platen for supporting said carrier, and line spacing means for intermittently actuating said carrier to effect a step-by-step feed of the card across the printing line.

19. In a typewriting machine. the combination of a carriage, a cylindrical platen carried thereby, a card carrier carried by the carriage and having means for holding a card and maintaining it in a curve the radius of which is materially greater than the radius of curvature of the platen. means which turn on the axis of the platen for supporting said carrier, a guide cooperative with said carrier to direct it in its movement. and line spacing means for intermittently actuating said carrier to effect a step-bystep feed of the card across the printing line.

20. In a typewriting machine, the combination of a carriage, a platen carried thereby, said platen having a curved contact face, a card carrying frame carried by the carriage and having means for holdinga card and maintaining it in a curve the radius of which is greater than the radius of curvature of the platen. means which turn on the axis of the curvature of the platen for moving said frame. and line spacing devices connected to said moving means.

21. In a typewriting machine. the combination of a carriage, a platen carried thereby, said platen having a curved contact face, a card carrying frame carried by the carriage and having means for holding a card and maintaining it in a curve the radius of which is greater than the radius of curvature of the platen. means which turn on the axis of curvature of the platen for moving said frame. guiding means cooperative with said frame for maintaining the card held thereby substantially tangential to the curved face of the platen at the printing line, and line spacing devices connected to said moving means.

22. In a typewriting machine. the combination of a carriage. a cylindrical platen carried thereby. a card carrier carried by the carriage and having means for holding a card and maintaining it in a curve the radius of which is materially greater than the radius of curvature of the platen, a shaft which supports said platen, supporting means carried by said shaft and connected with said carrier, and line spacing devices for intermittently turning said shaft to effect line spacing movements of the carrier and the card carried thereby.

23. In a typewriting machine, the combination of a carriage, a platen, an open card carrying frame carried by the carriage and movable bodily to carry the card across the face of the platen, the ends of said frame being formed by parallel front and rear walls between which opposite side edge portions of the card may be received and by which the card is held against forward and backward movement in the frame, and line spacing means for intermittently moving said frame to carry the card across the face of the platen at the printing line. 24. In a typewriting machine, the combi nation of a carriage, a platen, an open card carrying frame carried by the carriage and movable bodily to carry the card across the face of the platen, the ends of said frame being formed by parallel front and rear side walls between which opposite side edge portions of the card may be received and by which the card is held against forward and backward movement in the frame, said frame also having a bottom Wall against which the bottom edge of the card is adapted to abut, and line spacing means for inter mittently moving said frame to carry the card across the face of the platen at the printing line.

25. In a typewriting machine, the combination of a carriage, a platen, an oscillating open card carrying frame carried by the carriage and movable bodily to carry the card across the face of the platen, the ends of said frame being formed by parallel front and rear walls between which opposite side edge portions of the card may be received and by which the card is held against forward and backward movement in the frame, line spacing devices for intermittently moving said frame in one direction to carry the card across the face of the platen at the printing line to line space the card, and means for moving said frame in the opposite direction.

26. In atypeavriting machine, the combination of a carriage. a platen, an open card carrying frame carried by the carriage and movable bodily to carry the card across the face of the platen. the ends of said frame being formed by parallel front and rear walls between which opposite side edge portions of the card may be received and by which the card is held against forward and backward movement in the frame, pivoted means on which said frame is pivotally supported. a guide coiiperative with said frame to guide it in its movement on the carriage, and hand actuated line spacing means for moving said frame.

27. In a typewriting machine, the combi nation of a carriage, a platen, a movably mounted inflexible card carrying frame, said frame having means for holding the card therein and for maintaining it in a curved condition, and means for moving said frame relatively to the platen.

28. In a typewriting machine, the combination of a carriage, a platen, an open inflexible card carrying frame carried by the carriage and movable bodily to carry the card across the face of the platen, said frame having substantially parallel curved walls between which opposite edge portions of the card may be received and by which the card is maintained in a curved condition in the frame, and hand actuated means for moving said frame to carry the card across the face of the platen at the printing line.

29. In a typewriting machine, the combination of a carriage, a platen having a curved face, an open inflexible card carrying frame carried by the carriage and movable relatively to the platen, said frame having substantially parallel curved walls between which opposite edge portions of the card may be received and by which the card is maintained in a curved condition, the radius of curvature of the card thus maintained be ing greater than the radius of curvature of the platen, and hand actuated means for moving said frame to carry the card across the face of the platen at the printing line.

30. In a front-strike typewriting machine, the combination of a carriage. a platen having a curved face, an open inflexible card carrying frame carried by the carriage and movable up and down to carry the card across the face of the platen and to hold the card in position to receive the impact of upwardly and rearwardly striking type bars, said frame having substantially parallel walls between which opposite side edges of the card may be received and by which the card is maintained in a curved condition, the radius of curvature of the card thus maintained being greater than the radius of curvature of the platen, said frame also having a wall aganst which the bottom edge of the card abuts, and hand actuated line spac ing devices for intermittently moving said frame to effect an upward step-by-step feed of the card across the printing line.

31. In a front-strike typewriting machine, the combination of a carriage, a platen having a curved face, an open card carrying frame carried by the carriage and movable up and down to carry the card across the face of the platen and to hold the card in position to receive the impact of upwardly and rearwardly striking type bars. said frame having substantially parallel walls between which opposite side edges of the card may be received and by which the card is maintained in a curved condition, the radius of curvature of the card thus maintained being greater than the radius of curvature of the platen, said frame also having a Wall against which the bottom edge of the card abuts, means for guiding said frame so as to maintain the card substantially tangential to the platen at the printing line, a shaft carried by the carriage and operatively connected with said frame, and means for intermittently actuating said shaft to eifect an upward step-by-step feed of the card across the printing line.

In a typewriting machine, the combination of a carriage, a platen, a shaft carried by the carriage, means for limiting the rotative movement of said shaft, and an oscillating card carrying frame controlled by said shaft and movable thereby to carry the card across the face of the platen at the printing line.

33. In a typewriting machine, the combination of a carriage, a platen, a shaft carried by the carriage, means for limiting the rotative movement of said shaft, an oscillating card carrying frame controlled by said shaft and movable thereby to carry the card across the face of the platen at the printing line, and hand actuated means 0perable at will for controlling said shaft.

34. In a typewriting machine, the combination of a carriage, a. platen, a shaft carried by the carriage, means for limiting the rotative movement of said shaft. an oscillating card carrying frame controlled by said shaft and movable thereby to carry the card across the face of the platen at the printing line. a line spacing wheel controlling said shaft, a line spacing pawl for intermittently actuating said wheel, and hand controlled means for actuating said pawl.

35. In a typewriting machine, the combination of a carriage, a platen, a shaft carried by the carriage, means for limiting the rotative movement of said shaft, an oscillating card carrying frame controlled by said shaft and movable thereby to carry the card across the face of the platen at the printing line, a line spacing wheel controlling said shaft, a line spacing pawl for intermittently actuating said wheel, a handle for actuating said pawl to effect a predetermined number of line space movements of the frame before it is arrested by its limiting means, and a finger wheel for turning the shaft in the opposite direction to return the frame to its initial position.

36. In a front-strike typewriting machine, the combination of a carriage. a platen, a shaft carried by the carriage, means for limiting the rotative movements of said shaft in both directions, an oscillating substantially vertically disposed card carrying frame which supports a card in front of the nae-secs .platen to receive the impact of upwardly and rearwardly striking type bars, said frame being controlled by said shaft to carry the card across the face of the platen at the printing line, and hand controlled means for controlling the movement of Said shaft.

37. In a typewriting machine, the combination of a carriage, a platen, a rock shaft carried by the carriage. arms fixed to said shaft, and a card carrying frame pivoted to and moved by said arms to carry the card ilCIOSS the face of the platen at the printing 38. In a front-strike typewriting machine, the combination of acarriage, a platen carried thereby, a rock shaft carried by the car riage, arms which are fixed to and project forwardly from said shaft, a substantially upright card carrying frame arranged in front of the platen and holding the card in a position to receive the impact of upwardly and rearvvardly striking type bars, said frame being pivoted to and movable by said arms to carry the card across the face of the platen at theprinting line, and hand actuated means for controlling said shaft.

39. In a typewriting machine, the combination of a carriage, a platen, a rock shaft carried by the carriage, arms fixed to said shaft, a card carrying frame pivoted to and moved by said arms to carry the card across the face of the platen at the printing line,

and guiding means carried by the carriage and cooperative with said frame to guide it in its movement on the carriage.

40. In a typewriting machine, the combination of a carriage, a platen, a rock shaft carried by the carriage, supporting members fixed to said shaft, a card carrying frame pivoted to and moved by said supporting members to carry the card across the face of the platen at the printing line, and a guide fixed to the carriage and cooperative with said frame to guide it in its movement on the carriage.

41. In a typewriting machine, the combination of a platen having a curved face, a card holder mounted to oscillate over the face of the platen, and means for line spacing said card holder independently of the platen.

42. In a t vpe.\\'riting machine, the combination of a cylindrical platen, and an areshaped oscillating card holder having the center of the are on which said holder is formed in the rear of the platen.

43. In a typewriting machine, means for guiding and feeding a card in a curved condition, the center of the curvature being off-set and remote from the pivotal center of the cylindrical platen over which the card is fed.

4A. In a typewriting machine, an arc shaped card holder mounted to swing across the face of the platen.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses, this 29 day of May. 1914.

WILLIAM GARFIELD SHELDON.

Witnesses:

CHARLES E. SMITH, M. F. IIANNwni-naa.

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