US928876A - Type-writing machine. - Google Patents

Description

H. S. MOCORMAGK.

TYPE WRITING MACHINE.

APPLIOATION FILED 313.11, 190B.

928, 876, Patented July 20, 1909.

2 SHEETBBHEET 1.

f V t 1": T Vztnelssies H. S. MOGORMAGK'.

TYPE WRITING MACHINE.

APPLICATION FILED 313.11, 190a.

Ivy 42 Patented July 20, 1909.

2 SHEETS-BEEET 2.

Inventor;

UNITED STATES PATENT OFFICE.

HARRY S. MCCORMAOK, OF NEW YORK, N. Y., ASSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented July 20, 1909.-

. I Application filed February 11,1908. Serial no. 116,286.

Be it known that I, HARRY S, MOCORMACK, a.citizen of the United States, residing in New York,--in the countyof New York and State of New York, have invented certain new and useful .Improvements in Type-' Vtritin'g Machines, of which the following is a specification. Y

Thi' invention relates to the paper feeding means of ty ewriting machine's, es ecially those in which a paper clip extends al dng the platen and is normally open and inactive during the rotation of the platen, so as to ermit continued revolution of the platen,

independently of the clip the cli being connectlble to the platen to rotate t erewith, so that the leading edges of a quantity of sheets may be readily inserted within the clip and carried thereby around the platen without disarranging the sheets, as set forth in United States Patent No. 850,310.

One of the principal objects of the present invention is to improve the constructlon and 5 operation of the clip and its controlling mechanism, especially with a view to securing more perfect and satisfactorycontrol of the cl'p, and enabling it to betterperform its functions;

I provide a spring that. is tensioned to the clip against the platen, and I hold thd fiip away from the platen by means-of a trip .or latch. The latter is releasable by means of a finger key provided upon the latenframe, so that afterintroducingthe eading edges of the sheets within the open clip, the operator may, by pressing said key, cause the clip to clamp the sheets against the platen, and also to become mechanicallyv connected to the platen to rotate therewith. After carrying the leading ed e of the sheets around past the pressure rol s and up past the printing point, the 'clip comes into engagement with a cam mounted upon the platen frame, whereby the clip is opened and the sheets released therefrom. As the platen continues to turn forwardly, the clip rides offfrom said cam on to the trip or latch be fore mentioned, and there remains idly during the subsequent revolution of the platen. I further provide aback check to prevent the clip from 'bein carried aroundwith the l-aten when the atter is rotated backwar also means to gage the side edges of t sheets while 'belng introduced.

into. the clip. Other .features and advan tages will hereinafter appear.

In the acco'mpanyin drawings, Figure 1 is an end elevation partly in section of a platen frame of an Underwood front strike writing machine embodying my improvements. Fig. 2 is a similar view, (certain parts being omitted) to illustrate the manner of inserting and catching the sheets. Fig. 3 is a perspective rear View of the platen and clip. Fig. 4 is a rear elevation of a platen and clip. Fi s. 5 and 6 are rear elevations of one end 0 the platen illustrating the manner of releasing the clip to permit it to swing against the platen. Figs. 7 and 8 are end elevations to illustrate different stages in the movement ofthe clip. 9 is a sectional view of one of the platen frame ends. Fi 10 is a view similar to'Fig. 7, but illustratlng the clip in normal idle position. In Fi s. 7, 8 and 10, arts are omitted for the sa 'e of clearness. ig. 11 is a part sectional plan of the key for releasing the clip and of the cam for opening the same. springressed tri or latch, whic normally holds t e cli ini le position.

In said nderwood machine herein illustrated, type-bars 1 strike rearwardly against the front side of a cylindrical platen 2, the latter having an ax e 3, upon which it is journaled in the' ends of a platen frame which also com risesa paper-shelf 4. The paper-shelf inc ines forwardly and downwardly and in rear of the platen and is pron(ged at 5 to-curve forwardly around the in common use on said machine. Upon the ends of the platen are provided annular recesses or bearings 8 to receive loosely a air of collars or ring-like 3ournals 9, the

- 'tter rigidly connected by a bar 110, which extends alo the platen and close thereto, which bar is eveled alongits rear edge, to facilitate its introduction between the platen and the yielding reassure-rolls 6, 7. The

Fig. 12 is a sectional lan 'of the bar has at itsends ears 11, which are fixed to rotate with the thin strip eXten ing aong the platen from end to end thereof close to said har 10. Along its rear edge the clip is bent inwardly at right angles to forma ledge 16,.which serves as a gage for the leading edges of the sheets, to square them vto the laten orto brin them into parallelism wit the print ing ine. From .the opposite edge of the aper-clip extend tongues 17 .to aid in congithe sheets against the platen, and both the c ip 14 and the tongues 17 conform substantially to the curvature of the platen.

Upon the clip at oneendis provided an ear 18 from which projects a pin 19 normally occupying a recess 20 in an L-shaped plate 21, which constitutes a trip or late After the sheets 22 are introduced into the clip, Fig. 3, the operator depresses a key 23, which moves said tri from the Fi 5 to the Fig. 6 position, therehy releasing t 1e clip 14, which is caused by springs 15 to press the sheets 22 against the platen, said springbeing tensioned to throw the clip against the platen and being normally restrained by the trip 21 a I 1 I It will be observed, that the finger-piece 23 is provided upon the to ofa plunger 24 suitably mounted uponftlie platen frame end 25 to slide downwardly, and returned tonormal position by a spring 26. The tri .plate'2lis'carried u on the end of a horizontal plunger 27 sliding in a hollow stud 28, the latter secured upon a vertical wall 29 of the platen frame end; rotation of the tri bein prevented by a pin 21.

ob 'qlue cam edge 30 is formed upon the vertic sliding plun er 24, to engage a pin 31 projecting from t e trip plunger 27, and thereby force said plunger and trip from the Fig. '5 to theFig. fi position, thus releasing the projecting pin 19, and permitting the clip to snap toward the platen. When the key23 is released, a spring 32, Fig.12, returns the trip 21 to normal position.

The springs 15 not only throw the clip.

-with toothed wheels 34, which are fixed upon the platen, whereby the clip is forced platen. A Wheel 34 is rovided at each end of the platen, Fig. 4.

he construction of each laten end is illustrated at Fig. 9, at which 1t-will be seen that the collar or hub 9 is loosely mounted upon a rim or flange 35 formed upon the wheel '34, the-latter secured upon the latch core 36 by means of pins 37. A dis -cap 38 is sescrews upon the platen frame head 40 to retain the collar 9.

The clip structure .is thin, and hugs close to the. laten, so that the rolls 6 and 7 may ride eas' y t'hereov'er. The sheets are all held by the clip inthe original position to which they ixfere adjusted upon the platen until, during the rotation of the platen, the sheets are safely introduced between the pa erguidin devices and the platen, so that t e origina alinement and gaging of the sheets upon the platen remains undisturbed. After con ducting theleading edges of the sheets up past the printing point, the projection 19 upon the clip comes into engagement with a cam edge 41, which is mounted at the upper side of the platen and curves eccentrically thereto, so as to force the projection 19 outwardly or radially away from the laten, and hence to open the clip, Fig. 7. The cam edge 41 is formed upon a plate 42, which is secured upon studs 43, 44, projecting inwardly from the wall 29 of the platen frame. A back check pawl 45, Fig. 1, pivoted u on a stud 46, carried upon the wall 29 o the platen frame, is pressed by a spring 47 against the cam 41, to be engaged by the projection 19 to arrest the open clip in case the platen should be turned backwardly, so that the comparatively frail structure of the clip .may not become injured by forcing it down against the usual platen scale and paperguiding devices. As theplaten continues to rotate forwardly'after the leading edges of the sheets 22 are released by the clip, the clip pin 19 continues to ride rearwardly along the curved upper edge of the bar 42, and passeson to the edge 48 of the trip plate 21, said edge 48 forming a substantial continuation ofthe curved cam edge 41,, by means of which the cli is held open against the tension-of the springs 15. I finger or guard 49 uponthe cam plate projects into the path of the pin 19, and arrests the clip; the platenthereafter continuin to revolve while the clip remains idle an ,stationary. The springs 15 force the in 19 into the notch 20 in the trip, where y the clip is held against accidental rotation either forwardlyor backwardly.

I provide a horn 50 to extend forwardly from the paper shelf- 4 above the 0 en clip 14, Fig. 2, and to a point well forwar ofthe clip whenthe latter is in normal position, so that the side edges of thesheets-22 may be gaged of said trip.

independently of the clip, a spring to press the clip toward or against the platen, means 0 er'ated'by the spring to connect the clip'to t e laten to revolve therewith, and means rem ered efiective by the revolution of the platen to throw the cli away from the platen in. opposition to t e tension of said spring.

2. In a typev. riting machine, the combination w ith a revoluble platen, of a paper clip extending therealong and supported so as to permit continued revolutions of the platen independently of the clip, a spring to press the clip towardor against the platen, means operated by the spring to connect the clip to t e laten to revolve therewith, and means ren ered effective b the revolution of the platen to throw the c ip away from the platen in opposition to the tension of said spring, and to disconnect the clipfrom the platen and hold it stationary during subsequent revolution of the platen.

3. In a typewriting machine, the combination with a revoluble platen, of a paper clip extending therealong, a spring tensioned to sWingthe clip against the platen, a trip restraining the clip, and means operated by the spring to connect the clip to the platen to revolve therewith upon the release of the clip from said trip. I Y

4. In a typewriting machine, the combination with a revoluble platen, of a paper clip extending therealong, a spring tensioned-to swing the'clip against the platen, a trip re-- vstraining the clip, means operated by the spring to connect the clip to the laten to revolve therewith upon re ease of t e clip from said trip, and means to move the clip away from the platen and restore. it to the 5. In a typewritin machine, the combination with a revolub e platen and a platen,

extending along the frame, of a paper cli platen and sup orter to permit continued revolutions of t e platen independently of the clip, a finger-piece mounted upon the platen frame, means 0 erable by said fingerpiece to cause the clip to bear against the platen or the paper thereon, and means called into action h platen to efi'ectthe' elease of the clip.

6. In a typewriting machine, the combination with a revoluble platen, of a paper clip control the revolution of theextending therealong, a spring tensioned to swing the clip against the platen, a trip restraining the c ip, a finger-piece having means to operate said trip, means operated by the spring to connect the clip to the p aten to revolve therewith upon release of the clip from said trip, and means to return the trip and finger piece to normal positions.

7. In a typewriting machine, 'the combination with a revoluble platen, of a paper clip extending therealong, a spring tensioned to swing the clip against the platen, a trip restraining the clip, and connected to a fingerpiece, means operated by the spring to connect the clip to the platen to revolve therewith upon release of the clip from said trip, and means dependent upon the revolution of the platen to move the clip away from the platen and restore it to the control of said trip. I

8. In a typewriting machine, the combination with a revoluble platen, of a paper clip extending therealong, a spring tensioned to swing the clip against the platen, a trip restraining the clip, means operated by the spring to connect the clip to the platen to revolve therewith u on the release of the clip from said trip, an a cam mounted upon the platen frame in the path of a part upon said clip,and shaped to liftthe cli platen during the revolution'of t e latter.

9. In a typewriting machine, the combina- .tion with a revoluble platen, of. a paper clip extending therealong, a spring tensioned to swing the clip against the platen, a trip restraining the clip, means operated by the spring to connect the clip. to the platen to revolve therewith upon release of the clip from said trip, and a cam mounted upon the platen frame in the path of apart upon said- 'clip, and shaped to lift the clip from the platen during the revolution of the latter; said cammounted in position'to release the clip after the latter has advanced past the printing line duringithe first revolution of the platen.

10. In a typewritin machine, the combination with a revolub e platen and a platen frame, of a paper clip mounted so that the platen may )e' rotated independently of the clip, a s ring tensioned to throw the clip against t e platen, releasable means restraining the clip from acting under the influence of said spring, a tooth upon the clip to engage teeth upon the 'laten when-the clip is thrown against the p aten, a cam mounted upon the platen frame, and a projection upon the clip to be engaged by the cam during the revolution of the platen, to lift'the clip from the platen and disconnect the clip tooth from the laten, and to'restore the clip to the contro of said releasable means.

11. In a typewritin machine, the combination with a revolubl e platen and a platen frame, of a clip extending along the platen but disconnected therefrom, a finger-piece mounted upon the platen frame, means controlled by said finger piece for moving the clip against the platen and connecting the clip to the platen to revolve therewith, and means dependent upon the revolution of the platen for lifting the clip 'so that the platen may continue to revolve independently of. the clip.

12. n a typewriting machine, the combination with a revoluble platen, of a clip extending therealong, a spring tensioned to swing the clip against the platen, a trip restraining the clip, means operated by the spring to connect the clipto the platen to revolve therewith upon release of the clip from saidtrip, and a cam mounted upon the platen frame in the path of a part upon said clip, and shaped to lift the clip from the platen during the revolution of the latter; said cam mounted in position to release the clip after the latter has advanced past the printing line during-the first revolution of the platen; said 'tri forming a substantial continuation of sai cam, and a finger-piece connected to said cam to move it laterally to release the clip.

13. In a typewriting machine, the combination with a revoluble platen, of a paper clip extending therealong, a spring tensloned 'to swing the clip against the platen, a trip.

restraining the clip, means operated by the spring to connect the clip to the laten to revolve therewith .upon release 0 the clip from said trip, and a cam mounted upon the platen framein the path of a rojec'tion upon said clip, and shaped to lift t e clip from the platen during therevolution of the latter; said cam mounted in position to release the clip after the latter has advanced past the prlnting line during the first revolution of the platen; said tri forming a substantial con-. tinuation of mi cam, and a finger-piece con nected to said cam to move it laterally to release the clip; said tri'p having a finger in the path of sald projection to arrest the clip.

14. In a typewriti machine, the combination with a revoluble platen and a platen frame, of a paper'clip extending along the platen, a spring upon said paper clip and tensioned to swing the same against the platen, a trip mounted upon the laten frame toengage a projection upon sa1 011p and restrain it from either swinging to the platen lunger mounted upon the platen frame" an having a fingerp1ece,means for enabling said plunger to cam the trip to inoperative position, and resilient means to return the plunger and trip to normal positions.

t 15. In a typewritin machine, the combination with a revolub e platen and a platen frame, of a paper clip extendin alon the platen, a spring upon said paper 0 an tensioned to swing t e same against t e platen,

aper

a trip mounted upon the platen frame to engage a projection upon said clip and restrain it from either swin ing to the platen or rotating therewith, a p unger mounted upon the platen frame and having a finger-piece, means for enabling said plunger to cam the trip to inoperative means to return the p unger and trip to nors ring-pressed plunger mova le-crosswisdto t e direction ofvmovement of the first plun ger.

16. In a typewriting machine, the comb nation with a revoluble platen and a-platen platen, a spring upon said paper 0 ip and tensioned to swing the same against the platen, a trip mounted upon the platen frame to engage a projection upon said clip and restrain it from either swinging to the platen or rotatin therewith, a plunger mounted upon the p aten frame and having a finger-piece, means for enabling said plunger to cam the trip to inoperative position, and resilient means to return the plunger and trip to normal positions; said trip being-provided upon a spring-pressed plunger movable crosswise to the direction of movement of the first plunger, and said camming means including a cam provided upon the first plunger, and a pin pro'eeting from the second plunger into the pat of said cam.

17. The combination of a revoluble platen, a paper clip extending along the same, and mounted to revolve therewith, the platen being revoluble independently of the clip, means to connect and disconnect the clip fromthe platen, and means to prevent the clip from rotating backwardly with the platen.

18. The combination of a revoluble platen, a paper clip extendin along the same, and mounted to revo ve therewith, the platen being revoluble inde 'endently of; the clip, means to connect an disconnect the clip from the platen, and a check, as 45, and a projection, as 19, on-the clip to enga e said check to arrest the clip during the bac ward rotation of the platen"; the check being movable and mounted to permit the passage of the projection during the advance rotation ofthe aten.

19. na typewritin mahine, the,combiframe, of a e rotated independently of the tensioned to throw the clip osition, and resilient frame, of a paper clip extendin along "the mal positions; said trip being rovided upon a nation with a revolub e platen and a platen i clip, a spring against t e p aten, releasable means restraining the clip from acting under the influence of said spring, .a, tooth upon the clip to'engage teethg-upon the platen when the clip is thrown against the platen, a cam mounted upon the platen frame, and a projection upon thecli'pto be enga ed by the cam durin the revo tionof the p aten, to lift the clip om .the platen and disconnect the .clip tooth from the platen, and to restore the clip to the control of said trip; a back check pawl being mounted in the path of said projection to permit forward rotation of the clip with the platen but to arrest the clip during the backward rotation'of the platen.

20. In a typewriting machine, the combination with a revoluble platen and a platen frame, of a aper clip mounted so that the platen may lie rotated independently of the clip, a s ring tensioned to throw the clip against t e platen, releasable means restraining the clip from acting under the influence of said spring,a tooth u on the clip to engage teeth upon the platen W en the clip is thrown against the platen, a cam mounted upon the platen frame, and a projection upon the clip to be engaged by the cam during the revolution of the platen, to lift the clip from the platen and disconnect the cli tooth from the platen, and to restore the clip .to the control of said trip; a back check pawl being mounted in the path of said projection to permit forward rotation of the clip with the laten but to arrest the clip during the bac ward rotation of the platen; said pawl mounted to be effective at about the releasing point of the cli 21. In a typewriting machine, the combination with a revoluble platen,-of a clip having a collar or hoop, whereby it is mounted to revolve with the platen, the platen being revoluble independently of the clip, and a friction device between the collar and the platen.

22. In a typewriting machine and in combination, a revoluble platen having a cylindrical uninterrupted printing surface, a bar extending along said platen, means for supporting the said bar at its ends to permit continued revolutions of the platen independently of the bar, means operable at the will of the operator for connecting the bar to the platen to revolve therewith, a paper-clip carried by said bar, means for causing said clip to press the paper directly against the printing-surface of the laten, and a friction device between the p aten and the bar supporting means.

23. Ina typewriting machine and in combination, a revoluble platen having a cylindrical uninterrupted printing-surface, a paper-clip extending along said platen, means nation with a revoluble platen, of a paper clip extending therealong, a spring tensioned to swing the cli against the platen, a trip restraining the c ip, and means operated by the s )ring to connect the clip to the platen to revoive therewith upon release of the clip from said trip; means being provided to prevent accidental movement of the clip either forward or backward along the platen when the cli is under the restraint of said trip.

25. n a typewriting machine, the combination with a revoluble platen, of a paper clip extending therealong, a spring tensioned to swing the clip against the platen, a trip restraining the clip, a finger-piece having means to operate said trip, means operated by the spring to connect the clip to the laten to revolve therewith upon release of t eclip from said trip, and means to return the trip and finger-piece to normal positions; said trip also having means to prevent accidental movement of the clip in either forward or backward direction around the platen.

26. In a typewriting machine, the combination with a platen and a laten frame, of a clip extendin along the p aten, the platen being revolub e independently of the clip, a

s ring tensioned to swing the clip against the p aten, a finger-key provided upon the platen ame to release the clip, means also being controlled by said finger key to connect the clip to the platen, and means to release the sheets.

HARRY S. MGCORMACK. Witnesses:

D. M. ALHIRE, S. T. SMITH.

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