US1604174A

US1604174A - Typewriting machine

Info

Publication number: US1604174A
Application number: US671066A
Authority: US
Inventors: Alfred G F Kurowski
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1923-10-27
Filing date: 1923-10-27
Publication date: 1926-10-26
Anticipated expiration: 1943-10-26

Description

Oct. 26 1926. 1,604,174

7 A. G. F. KUROWSKI TYPEWRITING MACHINE Filed 001?- 2'7 1923 Patented Oct. 2%, 1926.

UNITED STATES httl hllt PATENT ALFRED G. F. KUROWSKI, F BROOKLYN NEW YORK, ASSIG-NOR T0 UNDERWOOD TYPE "WRITER COMPANY, OF NEW YQRK, N. Y., A. CORPORATION' 0F DELAWAEIE.

TYPE-WRITING MACHINE.

Application filed October 27, 1923.

This invention relates to stencil cardholders for typewriting machines, and es pecially to a celluloid or other flexible baching sheet placed in the cardholder frame.

An object of the invention is to provide improved means for fastening the backing sheet to prevent bulging and bending.

A further featureof the invention is the manner of connectinp the lower edge of the backing sheet to the bottom .of the cardholder frame, the sheet extending thence upwardly around the platen. This secures clear type-impressions.

One or more tabs of novel design on the backing sheet engage slots in the bottom of the card-holder frame. On the frame holes are provided through which a pencil point may be inserted, to guide the tabs into the slots when assembling the backing.

Another novel feature is the permanent shaping of the celluloid backing sheet so that it will fit the contour of the platen at the printing line, in every position of the cardholder, thereby providing a satisfactorysupporting surface for the stencil card, so that clear-cut impressions are produced.

The principal object of this invention is to provide interlocking portions of the cardholder and the backing sheet or card that by the act of inserting the card into the holder will cause such portions to engage and lock the card in position for writing; and which means, furthermore, may be integral with the card and with the bottom support on the holder fort-he card, respectively.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a view, in front elevation, of a portion of card-holder frame with the hacking sheet shown attached thereto,and the stencil-card positionedthereon.

Figure 2 is top plan View, partly in section, of a card-holder frame, showing slots for attaching the "backing sheet.

Figure 3 is a fragmentary bottom View of the device shown in Figure 2.

Figure 4 is an end elevation ofthe backing: sheet, showing its permanent shaping. Figure 5 is anendelevation of a portion of a typewriter, partly in section, with the intention attached thereto.

In the accompanyingdrawings a revoluhle platen carries a card-holderil, and types 12 strike against the front of the Serial No. 671,066.

platen. Card-holder 11 may be suspended from behind, over the platen 10, on a linespacing mechanism, a portion of which is shown at 13. 1h complete cardholder mechanism is fully disclosed in my co-pending; application No. 666,907, filed October-b, 1923. Card-holder 11 comprises upstanding frame members 1 1 and a lower cross-bar 15 in the form of a trough having a front, upstanding, flaring side 16, a bottom 1'? and a rear, flaring side 18. it. stencil-card 19 comprising; a rectangular cardboard frame 20, to the rear of which is pasted a stencil-sheet 21, may he placed with its lower edge in the trough of cross-bar 15, with its side margins within the card-holder sides 1 1 to position the stencil-sheet 21 to receive type-impressions, as shown in Figures 1 and 5. A backingsheet or backing piece 22, which may be made of celluloid, or other material having suitable properties, is fastened close to the back edge of the bottom 17 of the crossreach 15, and forms a pocket in which the stencil-card 19 is easily insertihle. Backing sheet 22 also supports the stencil-card :19 to prevent bulging); and bending thereof during the typing operation,so that clear-cut typeimpressions may be produced.

The bulging and bonding; of the stencilcard 19 is further avoided during the typing operation by fastening the backing; sheet 22 at its lower edge only to the back edge of the bottom 17. This allows the backing sheet 22 to be free to extend upwardly, around the platen 10 at the printing; line, in each position of the card-holder. The sheet22 may be given apermanently curved shape, as shown in Figure 4, so that it will better fit the contour of the platen 10 at the printing; line, and thereby always present a satisfactory supporting; surface against which the types 12 can strike. For attaching the sheet 22 to the card-holder 11, a shaped-tab 253 may preferably be provided at each end of the lower er go of sheet 22. Radiallyshaped slots 2a in the trough in bottom 1'? are provided and spaced to receive tabs 23. Each tab 23 is formed of a lip portion. 25 and a projection When tabs 23 are first introduced into slots 2%, they are compelled to curve slightly, due to the radial shape of slots 2 1, see Figure 2, until the lower edge of the backing sheet 22 reaches the bottom 17, at which time the projection 26 will straighten out and will as curved.

permanently hold the sheet 22 in place. The sheet 22 can be removed by tearing tabs 23 out of the card-holder 11. The lips 25 have blunt-pointed leading edges to guide the tabs 23 into the slots 24.

To facilitate the insertion of tabs-23 in slots 24, holes 27 are provided in line with the slots 24 on the front, upstanding, flanged side 16, through which a lead-pencil point may be inserted to push back the tabs 23, so as to bring them in alignment with the slots24. The leading edges of lips 25 will then readi y enter and guide tabs 23 into slots 24. In order to prevent the tabs 23 from interfering. or being interfered with, by any part of the carriage, angle projecting pieces 28 mounted on the downwardly facing side of the bottom 17 and extending around slots 24 be provided to guard the tabs 23, see Figures 1 and 5.

It will be understood that the bottom plate 17 of the holder has a slot at 24, with an extension 4 that projects laterally, being shown It will be further understood that the tab 25 projecting with the lower edge at one or more places has an extension 26 deflected laterally, or to the left; and the lowerwall 6 of the tab extends downwardly away from the free end of the portion 25 to the middle portion; while the other portion of the tab may have the lower edge 7 extending upwardly from the middle portion. This forms asomewhat angular low-er edge that will assist in directing the tab to the slot 24.

When the card is moved downwardly and enters the slot 24 at the main portion, the inclined edge 26 of the tab will engage the deflected portion 4 of the slot, that will have a kind of double cam action serving to deflect the tab free extension in the direction of the deflected slot and the engagement will beprogressive from the loweredge of the extension to the free end, and from the connection of the deflected slot-portion to its other end. When the tab penetrates the slot, it will. pass beneath the wall 17 and will naturally tend to flatten at the bent free projection, which will bring it beneath the margin of the slot-extension and prevent withdrawal of the tab. It will be further understood that this locking means comprises simply an integral portion of the card, that co-operates with an integral portion of the bottom plate 17, being merely a slot therein.

Variations may be resorted to within the scope oft-he invention, and portions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1'. The combination, in a typewriting machine having a revoluble platen, of a stencilcard-holding frame arranged to reciprocate in front of the platen, said frame having side arms connected by a bottom cross-piece, and

means for positively securing a formed backin -sheet to said crossaiece said backin b 7 23 sheet serving as a rear support for the stencil-card, which backing-sheet together with the card-holding frame forms a curved pocket for the card.

2. The combination, in a typewriting machine ha\ ing a revoluble platen, of a stencilcard-holding frame arranged to reciprocate in front of the platen, said frame having side arms connected by a bottom cross-piece, and means for positively securing a formed backing-sheet to said cross-piece, including hooks projecting downwardly from the bottom edge of said backing-sheet, said hooks being designed to hold the backing-sheet in its effective position by engaging locking slots in the card-holding frame, said backing-sheet serving as a rear support for the steneilcard, the backing-sheet together with the card-holding frame forming acurved pocket for the card.

3. In a typewriting machine, a platen, a card-holder mounted adjacent to the platen, interlocking means for fastening a backing sheet by its lower edge to the card-holder, said means comprising a tab at the lower edge of said sheet, and a slot for engaging the tab in the lower cross-reach of the cardholder. 7

4. The combination, in a typewriting machine having a revoluble platen, of a stencilcard-holding frame arranged to reciprocate tangentially in front of said platen, said card-holding frame having side-supporting arms and a bottom cross-bar forming an integral part of said supporting arms, said cross-bar having locking slots designed to engage with hooks projecting from the bottom edge of a celluloid backing-card in a manner to effectively hold the card in its operating position, said cross-bar having also holes adjacent said locking slots, through which holes a pointed tool may be inserted to guide the hooks into engagement with the slots in the eard-holding frame.

5. In a typewriting machine, a platen, a card-holder mounted adjacent to the platen, and interlocking means for fastening a backing sheet by its lower edge to the cardholder, said means comprising tabs extend ing from the lower edge of said sheet, and slots for engaging the tabs in the lower cross-reach of the card-holder, said lower cross-reach having holes adjacent said tabs, through which holes a pointed tool may be inserted to force said tabs into engagement with the slots in the cross-reach.

6. In a typewriting machine, a platen, a cardholder mounted adjacent to the platen, interlocking means for fastening a backing sheet by its lower edge to the card-holder, said means comprising a blunt-pointed tab extending from the lower edge of said sheet, aslot in the bottom of the card-holder, and

a hole in the front upstanding side of the cross-reach of the cardholder through which the tab may be directed to enter the slot, said tab having a projection formed there on, which, on being, inserted in the slot, locks the backing sheet to the cardholder.

7. In a typewriting machine, a platen, a card-holder mounted adjacent to the platen, interlocking means for fastening a backing sheet by its lower edge to the card-holder, said means comprising a tab extending from the lower edge of said sheet, and a slot for engaging the tab in the lower cross-reach of the cardholder, and means to guard the tab against injury.

8. In a typewriting machine, a platen, a card-holder mounted adjacent to the platen, interlocking means for fastening a backing sheet by its lower edge to the card-holder, said means comprising a tab extending from the lower edge of said sheet, and a slot in the bottom of the card-holder, a hole in the front upstanding side of the cross-reach of the card-holder through which the tab may be directed to enter the slot said tab having a projection formed thereon, which, on being inserted in the slot, locks the backing sheet to the card-holder, and a guard on the bottom side of said bottom of the card-holder around the slot to protect the tab from interference.

9. The combination, in a typewriting machine, of a revoluble platen, and a worksupporting membe mounted adjacent to the platen, said member having a permanently curved shape for supporting a work-piece contacting with the platen at the printing line to enable clear-cut type-impressions to be made on the work-piece, said supporting member co-operating with a celluloid sheet attached thereto to hold the work-piece therebetween.

10. In a typewriting machine. a revoluble platen, a card-holder mounted adjacent to the platen, and a flexible backing sheet, having a permanently curved shape, for supporting a work-piece tangent to the platen at the printing line to enable clear-cut typeimpressions to be made on the work-piece in any position of the card-holder.

11. In a typewriting machine, a revoluble platen, a card-holder mounted adjacent to the platen, a backing sheet for said holder, and fastening means betweenthe lower portion of said sheet and the card-holder which all()\ s the upper portion of the sheet to rest against the platen at the printing line in any position of the card-holder, said sheet having a permanently curved shape for supporting a work-piece tangent to the platen at the printing line to enable clear-cut type-impressions to be made thereon in any position of the card-holder.

12. The combination, in a typewriting machine, of a revoluble platen, a card-holder mounted adjacent to the platen, a backingsheet for said holder, and means for fasteningsaid sheet to the card-holder in a manner to present the sheet to the platen at the printing line, said sheet being permanently curved to contact with the platen in' a man nor to enable clear-cut type-impressions to be made on the sheet in any position of the cardholder.

13. A card-holder having at the bottom a longitudinally slotted wall with a deflected extension, and a card with a tab at the lower part having a portion projecting longitudinally with its lower edge inclined downwardly away from the free end, whereby the tab as moved downward will engage progressively at said inclined edge-portion along the wall of said slot-extension to bend said tabprojection laterally, until the tab penetrates the slot and thereupon flattens to normal position, to project beneath the slotted wallmargin and prevent withdrawal from the slot.

let. A card-holder having at the bottom a longitudinally slotted wall with a deflected extension, and a card with a tab at the lower part having a portion projecting longitudinally with its lower edge inclined downwardly away from the free end, and thence inclined upwardly to the other end of the tab, whereby the tab as moved downward will engage progressively at said inclined edge-portion along the wall of said slot-ex tension to bend said tab-projection laterally until the tab penetrates the slot and thereupon flattens to normal position, to project beneath the slotted wall-margin and prevent withdrawal from the slot.

15. A card-holder having locking slots, and a card having a locking hook forming an integral part thereof, said hooks being arranged to latch the card in its normal position when the same is lowered into the holder.

ALFRED G. F. KUROWVSKI.