US829465A - Paper-feeding device for type-writers. - Google Patents

Description

8 2 G U A D E T N E T A P N O S L E I R B A G C 5 6 A. .9 2 8 m N PAPER FEEDING DEVICE FOR TYPE WRITERS.

APPLICATION FILED SEPT.14,1904.

3 sums-sum 1.

N 829,465. EPATENTED AUG. 28, 1906.

G. GABRIELSON.

PAPER FEEDING DEVICE FOR TYPE WRITERS. APPLICATION FILED $32114, 1904.

3 SHEETS-SHEET 2.

No. 829,465. PATENTED AUG. 28, 1906.

C. GABRIELSON. v PAPER FEEDING DEVICE FOR TYPE WRITERS.

- APP nnnnnnnnnnnnnnn PT. 111111 4.

ty lie-writing machines.

taken longitudin front-roller UN TED sures rA'rE'nT I OFFICE.

CARL GABRIELSOX, OF SYRACUSE. NPBV YORK, ASSIGNOR'TO L. C.

SMITH & BROS. TYPEWRITER COMPANY, OF SYRACUSE, NEW

YORK. A CORPORATION ,OF

NEW YORK.

. PAPER-FEEDING DEVICE FOR TYPE-WRITERS.

.ipplication file'd September 14,1904. Serial No. 224.439.

Specification of Letters Patent.

. Patented Aug. 28, 1 906.

To all whom itmay concern.-

Be it known that I, CARL GABRIELSON, a citizen of the United States, residing at Syracuse, Onondaga county, State of New York,

have invented certain new and useful In1-' IIIIOVGIHBDtS in Paper-Feeding Devicesfor ype-Writers, of" which the following is a specification.

This invention comprises various improvements in the paper-feeding mechanism of he invention will be described in detail in the following specification, reference being had to the accompanying drawings, in which- Figure l'is a top type-writing machine having my improvements applied thereto. Fig. 2 isa plan view of part of the paper deflector .or guide. 'Fig. 3 is a section on the line 3 3 of Fig.1; is a section on the line 4 4 of Fig. 6. Fig. 5 is a perspective view of one of the supports for the frames which carr the paper-feed rollers and the springs which the construction being the same as that shown in plan view in Fig. 1. Fig. 6" is. a

plan view of paper-feeding mechanism, showing a modified arrangement of springs for the ends, as in Fig. 4, instead of interloc ing ends, as in Figs. 1 and 3. Fig. 7 is a'front View of the roller-frames shown in Fig. 6, partly broken awa and Fig. 8 is a section fl through the springsupporting bracket (shown in Fig. 6) on the line of one of the springs, illustrating the manner ofadjusting *the tension of the springs.

Referring'to Figs. 1, 2, 3, and 5 of the drawings, 1 indicates the top plate of a typewriting machine frame, and a: indicates the carriage, upon which the platen 2 and the paper-feeding mechanism are supported; The paper-feeding mechanism comprises afsec ondary paper-feeding roller 3, mounted upon a front-roller frame I), and a primary roller 4,

mounted upon-a rear-roller frame 0. ,The

roller-shaft 3 and apair of lever-arms '5, connected attheir forward ends to the ends of said shaft and pivoted adjacent to their plan view of part of a Fig. 4

engage said frames,

frame, as shown, consists of a ject' horizontally from a pair of' curved brackets-or supports 7. These brackets are arms 10 of the frame 0, and,as shown in Fig.

together by intermeshing teeth 12, so that when one of the paper-feeding rollers is rocked toward or from the platen the other roller will likewise be moved toward or from the platen. The front roller is normally pressed against the platen by springs 13, engaging 'the levers 5, and the rear roller is normally pressed against the platen by a pair of springs 14, engaging the levers 10. As shown in Figs. 1 and 5, the studs or pivotpins 6 and 11 are secured to the brackets or supports 7 forks 6 and 11*, which are riveted to the brackets and roject outwardlybeyond the sides of t e brackets. These projecting'portions of the forks or yokes serve as clamps or sockets in which the ends of the springs 13 and 14 are held. Each spring 13, as shown, has one end secured as opening in a lever-arm 5 near the-pivotal point of the latter. The intermediate-portion of eachspring is bent forward and has a bearing within a recess formed between the bracket 7 and a tongue 15, depending from is secured to the paper finger-bar 9. The s rings 13 are held against accidental disthrough the brackets and lock the springs within the recesses. Each spring 14 is U- shaped and has oneendsecured within a yoke 11 and-its other end extending into an opening in a lever 10 near the. pivotal point of the latter, and the intermediate portion of the spring has a hearin within recesses 17 in lugs-'17 of the adjacent bracket 7. The

3, the adjacent ends of. the arms are geared stated and its opposite end extending into an pacement' by screws 16, which extend springs 14 are held'against accidental disrearen'ds upon pins or studs 6, which proarranged transversely beneath thdplaten 4 The rear-roller frame an attaching-piece 15, by whichthe bracket placement by screws 18. Normally both the front and rear rollers are nessed against the platen. To move the rollers away from the platen for the-purpose of releasing or adjust-111g the paper, a rock-shaft 19 is arranged within bearings 20 u on the carriage back bar and provided witi adjustably-mounted arms 21, which project over antifrictionrollers 22 upon the rear-roller shaft 4. The rock-shaft is provided with a lever or fingerpiece 23. By pressing the linger-piece the arms 21 will cause the rear-roller frame 0 to rock and move the roiler 4 away from the platen, and as .the arms 1.0 are geared to the arms 5' between the pivotal points of both roller-frames the forward. roller 3 will simultaneously move away from the platen. "When the finger-piece 23 is released, a spring 34 upon the rock-shaft 19 returns the parts to their normal positions. There is provided slight lost motion between the intermeshing teeth 12, which ermitsthe roller 4 to be moved away from t e platen a slight distance, as when a few sheets of paper are fed in between the rear roller and the. platen without causing a movement of the forward roller away from the platen; but when a larger number of .heets of paper are fed in between the rear roller and the platen the front frame and roller will move away from the platen, but not to quite the same extent, owing to the lost motion between the teeth. Thus it will be seen that when a wad of paer which it is desired to hold firmly is fed mto the machine this wad will be held, first, between the rear or primary roller and the platen by the pressure of the springs 14 and also by the pressure of the springs 13, which is transmitted from the front to the rearroller frame. As the wad of paper is fed farther into the machine it passes between the platen and the front or secondary roller 3, which latter is at the time held away from the platen, and as soon as the wad of paper enters between the front roller 3 and the platen the spring tension becomes equalized between the two rollers, the springs 13pressing the front roller 3 against the paper and the springs 14 pressing the rear roller 4 against the paper. The total pressure upon the wad of paper, it will be noted, is the same at all times; but while the paper is engaged by the rear roller only that roller exerts much more pressure upon the paper than when the paper is engaged by both rollers. When the wad of paper leaves the' rear roller, the tension of the springs of the rear-roller frame is transmitted to the front-roller frame, and the wad ofpaper will then be held by the front roller alone with the combined pressures of the springs of both frames. The paper deflector or guide 24 (shownin dotted lines in Fig. 1 and in full lines'in Figs. 2, 3, and 4) is pivotally connected to the front-roller shaft by lugs 24,

I roller shaft.

springs are sprung-and gripped Fig. 3, and its rear edge rests upon the rear- Hence the guide swings away from the platen with the rollers.

In Figs. 4, 6, 7, and 8 are shown substantially the same arran ement of devices as in the n'eviously-descri ied figures, excepting that the spr ngs are diflerently formed and arranged and provided with. adjusting means and the frames which support the rollers in- ,stead of being connected by intermeshing teeth are provided with overlapping parts, which permit the forward roller to be moved away from the platen independently of the rear roller. When, however, the-rear roller is moved away from the platen, the front roller is also moved away. As shown in Figs. 4 and 6, the arms 5 'of the forward-roller frame and the arms ,10 of the rear frame are pivoted upon studs 6 and '11", respectively, projecting from the brackets 7, and instead of being connected by intermeshing teeth the inner ends 5 of the arms 5 overlap the inner ends 10 of the arms 10. This arrangement permits the forward roller 3'to be moved away from the platen independently of the rear roller 4; but when the latter is moved away from the platen it will be evident that the roller 3 will simultaneously be moved away. There is slight lost motion between the overlapping ends of the levers, permitting the rear roller to move. slightly away from the platen without disturbing the forward roller when only a few sheets of paper are inserted in the machine; but a greater movement of the rear roller caused by the insertion of a wad of paper will cause the movement of the roller 3 away'from the platen and transmit the tension of its springs to the roller 4, as in the previously-described construction. Likewisethe two rollers may be moved simultaneously away from the platen by pressing on the finger-piece 23. The springs shown in Figs. 4, 6, 7, and 8 consist of straight rods 25 .and 26, the former having its ends engaging openings in the arms 5 and. the latter having its ends engaging openings in the'arms 10. As shown, these springs engage the shorter ends of the arms between the pivot pins.

bracket (1 is suitably secured to the central. part of the back bar of the carriage and projects forwardly beneath the platen and longi tudinally between the front and rear rollersf Thisbracket has on its lower side midway between itsends a. clip 27 and at its ends depending fianges 28. The springs 25 and 26 extend through'the clip 27 and through openings in the flanges whi'cli 'are slightly lower than the opening in the clip, so; that the by the clips and flanges. The ends of the springs bear downwardly upon the short ends of the-arm's 5 and 10, and the tension of thesprings is regulatedby means of adjustable clips 29, consisting, as shown, of metal extending through longitudina slots U-shaped pieces of slotsv will raise massages 30 in the bracket over the springs. Two of these adjusting-clips are provided for eachspring, one at each side of the center, and the spring-rods extend throughthe clips. The clips, as shown, have lugs 31 projecting over the edges of the slots, and it will be evident from an inspection of Fig. 8 that the movement of the clips toward the outer ends of the the inner parts of the rods and depresstheir outer ends and cause greater tension-on the frames whichcarrythe paperfeeding rollers, and .vice versa.

i ranged to fromthe platen and transmit all of nation with a1 platen,- of two.

ondary paper-feed Having described my invention, what I claim, and desire to secure by Letters Pat.-- ent, is .7

1., In a type-Writing machine, the combinationwith' a platenandprimary and secg rollers, of'means for independently against, the platen, and connections between the rollers whereby the'pressure on the. secondary pressing said rollers roller is transmitted to theprimary' roller when. the latter roller is moved away from the platen, for the purpose setforth.

2. In a type-writing machine, the combinationwitha platen and primary and sec-. ondary paper-feeding rollers, of springs 'arpress said rollers independently against the platen, means for supporting the rollers and connections between the rollersupporting, means. so arranged that a slight movement of the primary roller from the platen will notaffect the 'secondaryroller while a greater jmo'vement of the primary roller from the platen due to the insertion ofa wad of paper will-shift the secondary roller its springpriniary roller. ,v f

3. In a type-writing machine, the combination with a platen and primary and secondary paper-feeding rollers, of-leversin which said rollers are mounted, sprin s are ranged to press said rollers indepen ently against the platen, andconnections between pressure to the said levers,1said connections being so.con-.- st'ructed thatthe ressure; of the springs .on their respective. r lers shall be inde student while paperis passing under both rollers and shall be concentrated on either roller when heavy paper is passing under it and not under the other."

4. In a type-writing machine, the -combi-' frames pivotally mounted below. the platen, front and rearpaper-feeding rollersmounted .in said frames, andtoothe'd connections between said frames whereby they are interlocked andadapted to swing simultaneouslyto and from the platen. 5. In a type-'writmg machine, the combination with'a cylindricalflplaten and front and rear paper-feeding r0 ers, of frontand rear roller frames supporting said rollers, respectively, inde endent sprin s pressing each end of each roller against. e-platen, and connections between said frames whereby a nation with a cylindrical said rollers res ectively,

pivoted beneat terloc movement of one roller away from the platen will cause the other. of said rollers to move away from the platen, said connections hav-' ing slight looseness or lost motion, substantially as described and .for the purpose set forth.

6. In a type-writing machine, the combination with a cylindrical platen and primary and secondary paper-feeding rollers, of rear and front spring-pressed .roller frames sup- Iporting said rollers respectively, said frames aving toothed connections-so arranged that a movement of the primary roller away from the platen will cause thesecondary roller to move away from the platen, and springs arranged to bear against both frames independently and press the rollers toward the platen.

7. Ina type-writing machine, the combination witha cylindrical platen and primary and secondary paper-feedin 'rollers, of rear and front spring-pressed ro ler frames sup porting said rollers respectively, said frames having toothed connections so arranged that a movement of the primary roller away from the platen will cause the secondary roller to move away from the platen, and springs arranged to bear against both frames independently and press the rollers toward the platen, said toothed. connections having slight looseness or, lost motion, for the purpose set forth.

8. In a type-writing machine, the combilaten and front and rear paper-feeding rol ers, of front and rear spring-pressed roller frames supporting said frames being pivoted beneat the platen and connected etween their pivotal points by devices providin slight looseness or lost motion, Where'- by a sight movement of one roller away from the platen willnot affect the other while a greater movement of one roller away from {the platen will cause the other roller to move away from the platen.-

nation with 'a cylindrical laten and front and rear paper-feedin rol ers, of front and rear spring-pressed r0 ler. frames supporting said rollers-res ectivel ,said frames being the platen and having ing connections between-their pivotal points,- and a aPer-deflecwr mounted on one of said roller-frames,

10'. In a type-writing machine, the combination with a cylindrical platenand front and rear'paper-feeding rollers, of front and rear springressed roller frames pivotally mountedbe ow the platen, and a paper-deflector pivotally connected to sand frontroller .frame and extending beneath the platen.

11. In a typewriting'mach1ne, the combination-with a cylindrical platen, of brackets arranged beneath the platen, roller-frames I -9. In a type-writingmachine, the combipivotally mounted on said brackets, paper- I feeding rollers carried by said frames, an independent spring at-each end of each frame V roller-frames pivotally-connected, to said brackets and having overlap ing parts between their pivotal points, an rollers carried by said frames and adapted to bear against the platen.

13. In a type-writing machine, the combination with a carriage and a cylindrical platen thereon, of a pair of supporting arms or.

brackets secured to the carriage near the ends of the platen and extending transversely beneath the platen, a pair of roller-frames pivotally connected to said brackets and having overlapping parts between their pivotal points, rollers carried by said framesand adapted to bear against the platen, and springs su ported by said brackets and engaging sai frames at their ends.

14. In a type-writing-machine, the combination with a carriage and a cylindrical platen thereon, of a air of supporting arms or brackets secured of the platen and extending transversely beneath theplaten, a, pair of spring-pressed roller -frames pivotally connected 'to said brackets, each frame comppising a rollerand springs carrie to the carriage near the ends shaft and a pair of s ring-pressed lever-arms supporting said sha t at its ends and pivotally connected to the brackets, the arms of one frame having parts overlapping the arms of the 0 posing frame between the pivotal points 0' the arms. 1

15. In a type-writing machine, the combination with a carriage and a cylindrical plateni thereon, of a pair of supporting arms or brackets secured tothe carriage near the ends of-the platen and extending transversely beneath the platen, a pair of spring-pressed roller-frames pivotally connected to .said brackets, each frame comprising a rollershaft and a pair of lever-arms supportin said shaft at its ends and pivotally connected to the brackets, the armsof one frame having" parts overlapping the arms of the opposing frame between the ivotal points of the arms,

gaging said lever-arms.

v 16.- Ina typewriting machine, the combination with a cylindrical laten and front and rear. paper-feeding rolfers, of front and rear spring-pressed roller frames pivoted beneath the platen, said rear roller-frame being arranged to engage and move said front frame when'the rear roller is moved away from the platen, and said front frame being movable away'from the platen independently of the rear frame.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CARL GABRIELSON. Witnesses:

' C. M. STEVENS,

C. EPARsoNs.

by said brackets and en-

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