US1613415A - Typewriting machine - Google Patents

Description

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1 927 .1. A. B. SMITH TYPEWRITING MACHINE Jam Filed Fe 1925 2 Sheets-Sheet 1 Jane 0 1927 J. A. B. SMITH TYPEWRITING MACHINE 2 Sheets-Shem 2 Filed Feb. 20 1925 Tatented Jan. t,

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tenant?- JESSE .d. SMITH, $TA11IF0ED, CONNECTICUT, ,ASSIGNOIR TO UNDERWGQT) TYPE- WRTTER COMPANY, NEWTYORK, N. 21, A GORPQRATION @h TYIPEWRITING MACHINE.

. Application filed-February $30, '1925. derial he. when.

This invention relates to improvements in stencil-card-writing devices "for typewriting machines, and more particularly to the kind disclosed in the patent to Elliot,

No. 1,378,771, dated May 17,- 1921.

In said patent, there is provided a stencil-card-holding frame pivotallysupported at the rear of the carriage and extending over the platen to the front thereof, where there is suspended therefrom a stencil-card. The card is line-spaced by means including a finger-wheel on the card-carrying frame and a cam connected to said finger-wheel, said cam engaging a roller fixedly supported on the carriage-frame. The cam has secured thereto a toothed Wheel having a pawl engaging therewith to hold the cam, and consequently the card supported by the cardholder, in various line-space positions. Thus, in operating said device, it ,is necessary, in order to beginka new line, to return the carriage and voperate the-linespacing mechanism, which, in said device, re-

quires two separate operations.

A feature of the present invention relates to improvements to expedite the operation of the device disclosed in saidJElliott patent. To this end the carriage is returned and the card line-spaced simultaneously. Tobring this about, the line-spacing cam, which raises the card-holder, is supported on the carriage frame, so as not to have a swinging or bodily movement, and consequently that it may readily be connected with the mechanism ordinarily used to line-spacethe platen. The roller with which said'cam engages, in the present invention, is; supported on the cardholder, so'that, asthe cam is rotated by the actuation of the. usual line-space lever, the

card-holder is raised to tine-space the stencilenable the platen to remain unoperatcd when the usual line-space lever'is actuated, the platen may be 'provided with the usual clutch shown in the patent to W. F. Helmond, No. 1,150,366, dated August 17,1915,

by which the platen may be reieased from its usual line-spacing mechanism Provision is also made in the present invention toenable adjustment'between theline-spacing mechanism andthe cam for raising the card-holder. N

Another feature of the invention relates to means comprising a. lever by which the line-spacing mechan sm may he released so as to allow the card-holder to resume its lowermost position for the beginning of ty ing of a new stenciLcard. This lever may e operated by the card-supporting frame when the latter is raised to its uppermost position.

Other features and advantages willhereinafter appean.

In the accompanying drawings,

Figure 1 is an end view of an "Underwood typewriter carriage with portions broken away for clearness, showing the invention applied thereto. A

Figure 2 is a diagrammatic view similar to Figure 1 and shows the cardholder raised to its uppermost position to release the line spacing cam.

Figure 3 is a diagrammatic side view showing the line-spacing mechanism operated.

Figure 4 is a top plan view of the device.

Figure 5 is a fragmentary front view showing the line-spacing mechanism. v

Figure 6 is a fragmentary side view showing theline-spacing cam and" a pawl-andratchet for holding it in its operated posihit shaft 13 011 a rocking frame 14 which is in t turn rockablv mounted on a cross-shaft 15 fast on the platen-frame 16 of a typewriting machine. The clamping member 112, as it is shown in the drawings, consistsof a. sheet-- metal bail having a finger-piece 17 at the center, and the jaws 11 being formed at the ends and joined by a connecting piece 18,

The jaws hold the card in a locating recess formed in the end plates 19of the rocking frame 1ft which are joined together'by a connecting bar 20. The finger-piece 1'? co operates with another fin er-piece 21, the

latter being fastened ,to t ve frame 14: by

means of a cross-bar22 of which it forms L an integral part. The two finger-pieces are drawn together to open the jaws against the pressure of springs 23, while at the same time the frame may be lifted to the position shown in Figure 2 against a stop device 24.

there is provided a deflector plate 25 which is also designed to hug the card against the platen to prevent shadowing of the types in a case position not being imprinted upon the card. One of the type-bars, designated by the numeral 26, is shown in front of the platen which serves as a backing for the card when the types are struck to cut the stencil-card. Thus, by successively striking the types and by line-spacing the carriage after each impression, the first line of typing is written upon the card.

In order to linepace the card there is provided mechanism whereby the free end of the rocking frame 14 may be raised amounts corresponding to the space between the lines. Said mechanism is operatively connected to the line-space lever 27 of an Underwood standard machine, which is operatcd sin'mltaneously With the return of the carriage. Said mechanism comprises a pawl 28 and a ratchet 29, the former being pivotally mounted by means of a screw 30 on the slide 31 of the Underwood line-space.

The pawl is resiliently held mechanism. against the ratchet by means of a spring 32 also fast upon the slide 31 by means of a screw 33. When the carriage is returned the slide 31 is moved rearwardly and the ratchet 29 is rotated one tooth by the pawl 28. Said ratchet 29 is mounted upon a shaft 34, which is revolubly mounted on brackets 35 fast to the platen-frame by means of screws 36. In order to render the ratchetand-pawl arrangement operative there is provided a retaining ratchet 37-co-operating with a pawl 38, the latter being mounted on a cross-shaft 39 which is supported by the platen-frame 16 while the former is connected to the ratchet 29 by means of a connecting hub 40 of which it forms an integral part. As the ratchets are rotated, a cam 41 is simultaneously driven around with the ratchets, and, due to its peculiar periphery, the cam raises the frame by engaginga roller 42 which is rotatably mounted on said frame. In this manner, the card is raised, each time that the ratchet 29 is spaced one tooth, an amount equivalent to the width of one space between two lines of typing upon the card.

When typing upon cards used in connection with addressing machines, it is sometimes necessary to use two, three or four lines and due to its limited space it is desirable tos ace the lines according to the number of lines to be typed thereon. To this end, the retaining ratchet 37 is provided with three sets of teeth each having a plu- When it is desired to change the position of the'ratchet relatively to the cam, the pin 43 is pulled out of engagement with. one of the holes 44 by drawing the ratchet against a spring 45 wound around the shaft 34 and the ratchet is rotated relatively to the cam. In this manner a diiferent set of teeth may be brought into position to co-operate with the feed and reta ning pawls.

After each line of typing, the carriage is restored and the pawl 28 is moved to feed one tooth of the ratchet 2% As the ratchet is fed around, however, a spring 46 is wound, thus storing up power to rotate the'ratchet backwardly when the retaining pawl 38 is released. Said spring 46 is held at one end by a pin 47 on the shaft, and at the other end is supported against one of the brackets 35. To eliminate the necessity of manually releasing the pawl 38 to return the cam 41 to its normal position corresponding to the .first line of typing upon the card, the pawl the action of the spring 46, the cam and the ratchets fly back to their normal position against a pin 51 fast on a center bracket 52 and against which a flatportion 53 of the cam 41 strikes.

It is customary to provide a back for the stencil-cards, in order toprevent the type blows from injuring the platen and to facilitate the cutting of the stencil. A backing 54, generally made of celluloid or other hard material, is held on the platen 55 in a position to be struck by the types. Said backingencirclesa portion of the platen and is held in place b means, not shown, but it may include a p ate in the manner disclosed in the application of Alfred G. F. Kurowski, Serial No, 746,951, filed October 31. 1924. As it is desired to hold the celluloid backing stationary, so that the same portion may be used and then line-space the lever-r To this end the clutchbutton 56,

usually found in the Underwood. machines,

is pulled outwardly and thus the platenshai't 57 is disconnected from the line-space mechanism, rendering the platen stationary, The platen may be spaced in the usual way lltl emme by ahandwheel 58 which is fast to the platen-shaft.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used Without others.

Having thus described my invention, l claim:

l. A device for typing stencil-cards, including, in combination, a platen, a carriage therefor, a carriage-return lever, an elevatable frame overlying the platen, said frame being pivotally mountedupon t e carriage at the rear of the platen and batting means for supporting a stencil-card pendent there= fronnsaid card contacting with the platen at the printing line, and means controlled by the carriage-return lever, for elevating; the free end of the frame step by step to successively line-space the card, said means including: a cam-plate rotatably mounted on a supporting" member fixed relatively to said carriage, and said elevatable frame having means to engage the came to lift the frame step by step as the cam rotates.

2. A device for typing; stencil-cards, including", in combination, a platen, a carriage therefor, a. carriage-return lever, a framehaving: means for suspending a card presented to the platen at the printing" line thereof, said frame being hinged on. said carriage at the rear thereof, and means for elevating the free forward end of the frame to line-space the card upon operation of the carriage-return lever, said elevating means including a cam pivotally mounted on a shaft, fixed relatively to the carriage, a ratchet mounted on said bhaft, a'pawl reciprocated by. the carriage-return leverysaid pawl engaging with the ratchet, retaining means for said ratchet, and means carried by said fname for engaging the cam. in a manner to elevate the frame stcpby step as the cam rotates I 3. lln combination with a typewriting machine including a carriage and a platen therefor, a line-space mechanism operatively connected to a carriage-return lever, a stenell-cuttingmechanism comprising a rockably mounted frame disposedto present a stencilcard to the printing field in front of the platen. means whereby the platen may be disconnected from the carriage-return lever, and means controlled by the carriage-return lever to line-space the stencil-card, said lastinentioned means including a cam revolubly mounted on a shaft fixed relatively to the platen, and a roller on said frame operativelyconnected to the cam 4t In combination with a typewriting machine including a. :arriage and a platen therefor. 21 linespacc mechanism operatively connected to a carriage-return lover, a stencil-cutting" mechanism comprising a rockahly mounted frame disposed to present a stencil-card to the printing field in front of the platen, means whereby the platen may be disconnected from the carriage-return lever, means controlled by the carriage-return lever to line-space the stencil-card, said lastncntioned means including a cam revolubly mounted on a shaft fixed relatively to the platen, and a. roller on said frame opera tively connected to the cam, and means to protect the platen against the type blows,"

said last-mentioned means including'a, celluloid backing encircling the platen and fastening means to hold the backing around the platen,

5. In. combination with. a typewriting machine including a carriage and a platen therefor, a line-space mechanism. operatively connected to a carriage-return lever, a stencil-cutting mechanism comprising a rockably mounted frame disposed to present a stencil-card to the printing field in front of the platen, means whereby the platen may be disconnected from the carriage-return lever, means controlled by the carriage-return lever to line-space the stencil-card, saidlast-mentioned means including: a pawl operatively connected to the carriage-return lever, a ratchet co-operating with said pawl, a retaining ratchet and a pawl therefor, the two ratchets being joined together by a connectint, hub, and both beingoperatively connect ed to a cam to drive the same around, a roller mounted'on the frame and co-operating with the earn to raise the frame to positions corresponding to different widths, and means whereby the relative positions of the cam and the ratchets may be line-snacinp width of the card.

6. In combination with a typewritingz ma chine including a; carriage and a platen stencil-card to the printingfield in front of the platein means whcrebythe platen may be disconnected from the carriage-return lever, means controlled by the carr age-return lever to line-space the stencil-card, said last-men tioned means including a pawl operatively connected to the carriage-return lever, a ratchet cooperating; with said'pawl. a retaining ratchet and a pawl therefor, the two ratchets beine: joined together by a connectino' hub, and both being operatively connected to a cam to drive thesame around a roller mounted on-the frame and oo-operating' with the cam to'raise the frame to positions corresponding to widths, means wl'ierehy the relative position of the cam and the r atchets may be changed to positions corresponding to the line-spacing width .of the card, means tore-lease the retainingpawl simultaneouslvwiththe insertion of a fresh card, said last-mentioned means including" a springwhich is Wound different line-spacingline-spacing ice changed to postions corresponding to the res? lid

. sent a stencil-card to the printing field in front of'theplaten, said stencil-cutting device comprising a rockably moiinted cardcarrying frame and clamps therefor to hold the edge of the card, a cam rotatably mount- 7 ed on the carriage and fixed relatively to the platen, a roller on. the card-carrying frame operatively connected to the cam to raise the free end of the frame as the cam isrotated, and means operatively connected to the carriage-return lever for rotating the cam si-" multaneously with the spacing of the carriage.

8. In combination with a typewriting machine including a carriage, a platen therefor, and a carriage-return lever, a stencilcutting device borne by the carriage disposed to present a stencil-card to the printing field in front of the platen, said stencil-cutting device comprising arockably mounted cardcarrying frame and clamps therefor to hold the edge ofthe card, a cam rotatably mounted on the carriage and fixed relatively to the platen, a roller on the card-carrying frame .operatively connected the cam to raise the free end of the frame as the cam is rotated,

and means operatively connected 'to-the carriage-return lever for rotating the cam simultaneonsly with the spacing of the carriage, said means including a pewl-andratchet arrangement operated by the carriage return lever, and a retaining ratchet operatively connected to a retaining pawl. '9. In combination with a typewriting machine including a carriage, a platen therefor, and a carriage-return lever, a stencil-cutting device borne by the carriage disposed to resent a stencil-card to the printing fiel' in front of the-platen, said stencilcutting device comprising a rockably mounted cardcarrying frame and clamps therefor to hold the edge'of the card, a cam rotatably mounted on the carriage and fixed relatively to the platen, a roller on the card-carrying frame operatively connected to the cam to raise the free end of the frame as the cam is rotated, means operatively connected to the carriagereturn lever for rotating the cam simultaneously "with the spacing of the carriage, and means controlled by the swing of the cardcarrying frame to restore the com to its normal position corresponding to the first line of typing upon the stencil-card, simultaneously with the raising of the card-frame to insert a fresh card.

10. In combination with a typewritlng machine including a carriage, a platen therefor, and a carriage-return lever, a stencilcutting device borne by the carriage disposed to present'a stencil-card to the planting field carrying frame and clamps therefor to-hold the edge of the card, a cam rotatably mountin front of, the platen, said stencil-cutting device comprising a rookably mounted carded on the carriage and fixed relatively to card, simultaneously with the raising of the card-frame to inserta fresh card, said lastmentioncd means including a spring operatively connected to the cam, said sprinr being loaded during the line feeding o the card at each carriage-return operatlon, a retaining ratchet-and-pawl arrangement, and

a pin fast on the card-carrying frame coop:

crating with an extension on the pawl, whereby said pin will strike the extension on said pawl to release the ratchet, thus permitting the spring to act and to back-turn the cam to its normal position.

11. A device for typing stencil-cards, including, in combination, a platen, a carriage therefor, a carriage-return lever, a frame having means for supporting a stencil card pendent; therefrom, said frame being pivotally mounted on the carriage in a manner to overlie the platen and to present the card to the platen contacting therewith at the printing line, and means for elevating the forward free end of the frame step by step to line-space the card, said elevating means including a cam rotatehly mounted on a shaft fixed relatively to the carriage, a roller carried by said frame, said roller contacting with the cam to elevate the frame step by step when the cam is rotated, and means controlled by the reciprocating movementof the carriage-return lever for rotating the cam, said last-mentioned means including a ratchet fixed to the cam, apawl reciprocated by the carriage-return lever, said pawl being designed to normally clear the ratchet but to engage ,the same npon operation of the carriage-return lever, a retaining ratchet also fixed relatively to the cam, a retaining pawl pivotally mounted on the carriage, said retaining pawl being releasable Wll-EII the frame is manually elevated to attach a fresh card thereto, and a spring for returning the cam to its normal position upon clearing the retaining pawl. I

JESSE A. B. Si /11TH.

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