Патент USA US2109293код для вставки
‘ Feb. 22, 1938. 2,109,293 |_. JENSEN ADAPTER FOR TYPEWRITERS Filed Oct. 14, 1937 2 Sheets-Sheet 1 Q05 ?ew)’: . / ,Zazzz's' Jensen. $140M Feb. 22, 1938'. 2,109,293 |_. JENSEN ADAPTER FOR TYPEWRITERS Filed Oct. 14, 1937 W 2 Sheets-Sheet 2 \lIL I 14% m. 2,109,293 Patented Feb. 22, 1938 } UNITED STATES PATENT OFFICE 2,109,293 ADAPTER FOR TYPEWRITERS Louis Jensen, Chicago, Ill., assignor to United Autographio Register 00., a corporation of Illinois Application October 14, 1937, Serial No. $9,017 6 Claims. (Cl. 197-128) This invention relates to adapters for type of the platen carriage. Upwardly swinging latch ~ writers to facilitate the use of continuous-form stationery, and more particularly to an improved typewriter attachment having an extensible frame upon which a carbon-holder may be ad- ' justably mounted. The primary object of the invention is to pro vide an inexpensive, light attachment which may be attached to the platen carriage of a type 1 O writer so as to move therewith and support con tinuous-form stationery led over the device to writing position in the machine. A further object of the invention is to adjust ably. mount a carbon-holder _ on the extension frame so that the position of carbon sheets an chored to said holder may be changed as the carbons become worn. That is, the holder may be moved forward on the extension frame and the worn front edge portions of the carbon may be. severed and discarded. The present invention is an improvement over the device shown in my Patent No. 2,000,641, is sued May 7, 1935. The invention is illustrated in the preferred 5' embodiment in the accompanying drawings, in which: Figure 1 is a side elevational view of the device showing how it is mounted on the rear of a type writer, the typewriter being shown brokenly; Fig. 2, a broken plan view of the device; and Fig. 3, a longitudinal sectional view, taken as indicated at line 3 of Fig. 2. In the embodiment illustrated, A designates a supporting frame; B, an extension frame slidably mounted for forward and rearward movement on the frame A; and C, the carbon-holder adjust ably mounted on the frame B‘. As shown in Fig. 1, a bracket 4 has its front end ?xed to the main frame 5 of a typewriting 40 machine by- means of screws 6. A channel-like track 1 is ?xed to the rear ends of the bracket 4 so as to provide a rigid support for the adapter. The typewriting machine is shown with the usual shiftable c rriage 8 in which is journaled a plat ' en roll 9. The rear of ‘the carriage is provided with a cross rod l0 which serves as a support for bars it are pivotally mounted on the brackets I3, as indicated at H. The latches are urged up wardly by tension springs l8 so as to ?rmly grip rod l0. To the front end of the supporting plate 5 II is ?xed a transversely disposed guide bar H! by means of screws 20. A pair of L-shaped up wardly presented guide members 2| are adjust ably secured to the cross bar by means‘of a pin and-slot connection 22. The purpose of these 10 guide members is to direct the stationery to the platen roll in proper transverse alignment. A pair of longitudinally extending angle bars 23 are spot welded to the lower side of the sup porting plate A to reinforce the plate and form 15 an open channel under the slot l2. A sheet met al housing 24 encloses the rear end of the chan nel thus formed and forms a closure for a grooved pulley wheel 25 which is pivotally mounted there in, as indicated at 26. The rear end of the frame is provided with a downwardly extending brack et 21 on which is anti-frictionally mounted a roll er 28 adapted to travel in the channel-like track ‘I and support the attachment. A rearwardly ex tending channel-like track 29 is ?xed to the lower portion of the housing 24 and serves to support the rear end portion of the extension carriage B. As best shown in Fig. 3,,a latching bar 30 is piv otally mounted, as indicated at 3|, in the channel provided beneath the slot l2. The latching ,bar comprises a pair of spaced longitudinally extend ing strips which are connected at their rear end by a cross bar 32 which is adapted to be engaged by a hook provided on the extension carriage, and their front ends extend forward slightly be- 35 yond the supporting frame I l and are secured to a cross member 33 by means of screws 34. The member 33 is adapted to extend slightly above the upper face of the supporting plate ll so that it may be depressed by stationery drawn around the platen and thereby raise the cross bar 32 to release the extension carriage for forward move- , ment. I As shown in Fig. 1, the housing 24 has a cut away portion 35 and one of the angle bars 23 has a cut-out 36 through which a pin 31 projects the front end of the adapter, as will be explained below. from the latching bar 30. A torsion spring 38 tudinally extending plate I I provided with a lon gitudinal slot l2. A pair of forwardly and down wardly extending brackets I3 are ?xed to the plate II by means of rivets I4 and their lower end portions are bifurcated, as indicated at ii, thereby urges the member 33 upwardly into en gagement with continuous-form stationery 39 which is led from a zigzag folded pack 40 over the device to writing position in front of the platen roll 9. A slight pressure on the member 33 is suf?cient to release the extension carriage B 55 The supporting frame A is shown with a longi- ‘ yieldingly urges the pin 31 downwardly and m a to provide a socket to receive the cross rod l0 2 2,109,293 for ‘forward “movement, as will be readily under-_ is turned thereover.’ This process’is‘ repeated’ from side to side until carbon is interleaved be The extension carriage B comprises a rectangu lar frame formed by two longitudinal members ll which are rigidly connected at their rear ends by a transversely disposed guide member 42 and at their front ends by means of a trans verse plate' It. The lower side of the plate 45 is tween each of the strips. The ?rst set of forms can then be inserted beneath the platen and advanced to regular writing position. After -a set of forms has been ?lled in, the typewriter carriage is moved to the center of the machine and the ends of the strips are backed provided with two pairs of grooved wheels 45 out from under the platen roller. The extension adapted to ‘engage-the edge portions of the sup frame with the. carbon-holder will then move porting plate and facilitate sliding ,movement" back to the original starting position and will thereon. As shown in Fig. 1, a roller 45 is anti .automatically become locked in its rearmost po sition. The front set of forms may then be frictionally Journaled between a‘ pair of down wardly extending ?ngers 46 which are secured to grasped and drawn forward over the top of the 15 the guide member 42 and loosely embrace the . typewriter while the carbon head will hold vthe side walls of the channel 29. Thus it will be carbon slips and prevent them from being drawn understood that the extension frame is mount forward with the forms. Preferably, the suc ceeding set of forms is advanced until its front edge is one inch beyond the carbon paper and then the completed set may be detached along 20 ed for forward and rearward movement with respect to the supporting frame with very little 20 friction. As ‘shown best in Fig. 3, the plate 43 is prov'ded vwith a downwardly and rearwardly exiending hook "which is notched for engage ment 'with the latch bar 32. The hook is se cured -in position by means of machine screws 25 48. A long coiled tension spring 49 is secured to the front end of the: supporting frame by screw the line of weakening provided between sets of ’ forms. When the next set of forms is advanced into ‘writing position, the stationery will pull down against the member 33 and release the extension carriage so that the carbon-holder may 25 roll forwardly as the advanced set of forms ad 50 and is threaded rearwardly around the grooved . vances around the platen. As the ends of the carbon sheets become worn wheel 25 and secured to the hook member 41 by they can be torn off a small portion .at a time, means of a screw 5|. Thus it will be under and ?nally, the last remaining unused portion 30 30 stood that the slight tension provided by the long can be turned around and secured to the blade spring 49 urges the extension frame B to its rear 56, thus using ‘the full sheet. most position where it will be locked against for If desired two or more carbon-holders can ward movement by the latch 30 and hook ‘I. The carbon-holder C comprises a transverse be supplied, for instance, where forms of differ ent lengths are to be used in the same type 35 plate 52 having a pair of downwardly extending studs 53 which are adapted to project through any transverse pair of apertures 54 which are arranged in a longitudinal series along the mem bers ll of the extension frame. The weight of the device is su?icient to hold the holder in its adjustable position with respect to the extension frame. The rear end of the plate 52 is bent around, as indicated at 52'“, to provide a smooth edge portion. The carbon-holder has upwardly 45 extending studs 55 for loosely impaling blades 56 to which are attached the rear edge portions of the carbon slips as in my Patent No. 2,000,641. Upward movement of the blades is limited by a pivoted ball 51, in the well known manner. A 50 pair of guide ?ngers 58 are adiustably mounted writer. ' The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be 40 construed as broadly as permissible, in view of the prior art. I claim: v . 1. A typewriter attachment comprising: a sup porting frame adapted to be secured to the rear 45 of a platen carriage; an extension frame slidably mounted for limited forward and rearward move ment on said supporting frame; a releasable catch for locking the extension frame in its rear most position; and a carbon-holder adjustably in slots 59 to keep the stationery in lateral mounted on the extension frame so as to move alignment. therewith, said holder having blades for secur ing the rear ends of carbon slips in interleaved relation with stationery led thereover. 2. A device as speci?ed in claim 1, in which 55 the supporting frame is provided with a rigid The extreme rear end portion of the channel '29 is provided with a bracket 60 which holds a 55 bar 6i provided with adjustable guide ?ngers 62 and a pair of guide rollers 63. In using the device, the transverse channel ‘I is normally left attached to the machine. To remove the adapter, as may be done overnight or 60 when ordinary single sheets are being typed in the typewriter, it is only necessary to pull the latches I6 downwardly and the adapter can be lifted off of the machine. The device is adapted to use fanfold station 65 ery wherein the strips, in the pack 40, are con nected to each other at one lateral edge. To load the machine the pack of forms 40 should be placed about a foot in rear of the adapter and three or four lengths of forms unfolded and 70 laid over the top of the adapter and typewriter. The carbon strips have their rear edge portion folded over the blades 60 and may be attached thereto by a small paper clip. The ?rst carbon blade is then placed over the lowest strip with 75 the ?nger between the forms and the next strip rearwardly extending channel-like track, and the rear end of the extension frame has a roller adapted to travel in said track and be supported thereby. 60 3. A device as speci?ed in claim 1, in which _ a transversely disposed channel-like track is pro vided beneath the supporting frame, said frame is provided with a roller to travel in said track, a second channel-like track projects rearwardly 65 from the supporting frame. and the extension frame has a supporting roller traveling in the second mentioned track. 4. A typewriter attachment comprising: a supporting frame adapted to be secured to the rear of a platen carriage; an extension frame slidably mounted for limited forward and rear ward movement on said supporting frame, said extension frame being provided with a longi tudinal series of pairs of apertures; spring ‘means 2,109,293 urging the e'..'tension frame rearwardly; and a carbon-holder provided with downwardly extend ing studs adapted to engage a pair of apertures in the supporting frame, said holder having blades for securing the rear ends of carbon slips in in terleaved relation with stationery strips led over said device. 5. A device as speci?ed in claim 4, in which the front end of the extension frame is provided with 10 transversely disposed guide rollers to engage the edge portions of the supporting frame, and a 3 roller is provided at the rear end portion with a depending roller for engagement with a rearward extension of the supporting frame. 6. A device as speci?ed in claim, 4, in which the front of the extension frame is provided with a hook, and a latch bar adapted to engage and hold said hook is fulcrumed in the supporting frame so that downward pressure on the front end of said bar by the stationery will release said extension frame for forward movement. 10 LOUIS JENSEN.