US1175915A - Paper-feeding mechanism for type-writers. - Google Patents

Description

N. H. ANDERSON PAPER FEEDING MECHANISM FOR TYPE WRITERS.

APPLICATION FILED MAY 22, \908.

1 175,9 1 5. Patented Mar. 21, 1916 2 SHEETS-SHEET I- N. H. ANDERSON;

PAPER FEEDING MECHANISM FOR TYPE WRITERS.

AIfPLlCA'HON FILED MAY 22, I908.

l 175,9 1 5. Patented Mar. 21, 1916.

2 SHEETSSHEET 2.

, UN c; STATES PATENT OFFICE.

NILS H. ANDERSON,

or HARTFORD, connnc'rrounnssxenon,

BY MESNE ASSIGN- MENTS, TO THE NOISELESS TYPEWRITER COMPANY, OF MIDDLE-TOWN, CON- NECTICUT, A CORPORATION OF CONNECTICUT. I

PAPER-FEEDING MECHANISM FOR TYPE-WRITERS.

,State of Connecticut, have invented certain new and, useful Improvements in Paper- .Feeding Mechanism for Type-.Writers, of

. which the following is a full, clear, and exact'description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relatesto the paper feed ing mechanism of typewriters, 'and more particularly to the pressure rollers, and the means for releasing the same.

One of, he objects of-the invention is to provide improved means for guiding the paper aboutthe platen roll and for hold- .ing it in contact therewit Anotherobject is to provide means which may be conveniently manipulated to release the paper when desired. r Other objects will be in part obvious and in part pointed out hereinafter.

features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the applicationof which will-be indicated in the following claims. 7

In the accompanying drawings wherein is illustrated one of various possible embodijments of my invention, Figure 1 represents a plan view of the platen carriage of a typewriting machine, showing the improve paper feed construction. Fig. 2 is a front elevation thereof. Fig. 3 is a view in section taken on line 3-" 3 of Fig. 4. Fig. 1 is a transverse sectional view taken on line 4-4 of Fig. 1. Fig. 5 is a view similar to Fig. 4, but showing the feed rollers disengaged from theplaten poll. Fig. 6 is a view in sectioii taken on line 6-6 of- Fig. 1, showing '45 the feed rollers; dsjmgaged from the platen.

Fig...'f'isjajsectlonalvie v taken on line 7 of Fig; 1', showing a detail of construction.

Fig; 8isa'similar view taken on line 8-8 of Fig. 1, showing thespring device for holdso' ing the feed rollers in engagement with the en r011;

z ,iiinilair'reference characters refer to simi- The invention accordingly consists in the Specification of Letters Patent.

Patented Mar. 21, 1916.

Application filed May 22, 1908. Serial No. 434,223.

lar parts throughout the several figures of the drawings.

Referring now to the drawings, wherein, for convenience the platen frame is broken away and but one set of feeding devices shown, 1 indicates the platen frame, a portion of which is formed by longitudinally extending rails 2 and 3, which connect the side pieces 4 and 5 of said frame. The platen roll is shown at 6, and "has its shaft 7 journaled as usual in the side walls of the platen frame, the platen, in the present instance, being constituted by a thin strip of.

metal 8 extending between the side vmembers of the platen frame, and lying in contact with the platen roll. A paper table is shown at 10 which is fixed in the platen frame and is apertured as at 11 at suitable points to accommodate the pressure rollers.

12 and 13 indicate rods or shafts which are extended longitudinally of the platen roll underneath the same in parallel relation therewith, and are supported at their ends in the side pieces 4' and 5 of the platen and mounted to swing upon rods 12 v brackets 14, said brackets being separated as by means of separating tubes 15 placed upon said rods. Brackets 14 as shown are constituted by side arms. 16 integrally joined at their rear ends by the hollow parts 17 which are positioned upon the supporting rods, and each bracket isprovided with a rearwardly extending arm 18.

frame, and 13 are Brackets 14 extend in opposite directions from rods 12 and 13, as clearly shown in the drawings/ and the arms of adjacent brackets extend toward each other, and lie in adjacency. Each of the brackets is pro-.

vided with a pressure roller 20, the shaft 21 of which is received in open ended slots 22 of the side arms 16 of the brackets, so .as

to enable the premure rollers to be easily removed from e brackets. The pressu \e rollers 20 are normally held in engagement with the platen roll by spring v -means which engages the arms 18 of the brackets. This spring means, in the present instance, is constituted by a double-forked leaf spring 23, which is supported intermediate its ends in a bracket 24, the depending end 25 of which engages rail I 2. and is supported upon a pivotv pin 26. Each of the tines 27 of this forked spring engagesone of arms 18 of the brackets, and inas-. much as spring 23 is pivotally supported and'the tines thereof are of equal length, it will be seen that an equal pressure is applied to each of the arms, and that by reason of this fact the pressure rollers will be held with equal pressure against the platen roll.

ers from the platen roll is constituted by an endwise sliding member or red 28 which rests substantially throughout its entire extent upon the upper rail 2 of the platen frame, said rod being provided with a plurality of projecting portions or cams 30, one of these cam portions being provided for each pair of the oppositely disposed arms 18 of the brackets; Rod 28 is provided with a longitudinally extending slot as at 31,,

through which extends the end of a bent bracket 32 fastened to the rail 2, which serves as a guide therefor. This bracket carries a leaf spring 33, the ends of which press upon the rod 28 and hold the same in sliding 'contact with rail 2 and prevent any rattling noise which might occur be tween these parts during the shifting move-' ments of the platen frame. A spring rod 28 and the side member 5 of the platen frame, presses said bar to the left, in which position the cam portions are disengaged from the arms 18 of the brackets, and the antifriction roller 40 journaled at 41 upon.

the end of rod 28. The cam portion 38 of fingerlever 36 is provided with a notch as at 42, which, when the cam is caused to slide rod 28 endwise, will engage with roller 40 and hold said rod in the position to which it has been moved by the cam, until the finger lever is again manipulated by the operator to release said rod.

The operation of this embodiment of my invention, which should be largely obvious, may be briefly described as follows: It will be'understood that when bar 28 is in the position illustrated in Figs. 1 and 3 of the drawings, all the pressure rollers will be in engagement with the platen. When, however, said bar is moved endwise to the right,

the cam portions 30 thereof will engage the arms 18 of the brackets and swing said brackets and the pressure rollers carried thereby away from'the platen roll, thus re-. leasing the paper. The notch 42 of the cam as will engage roller 40 of bar 28 and hold the engage the pressure rollers with the platen The means for releasing the pressure roll- 34.- interposed between the upturned end 35 of parts in this position until released, where} upon spring 34 will return bar 28 to its normal position and allow spring 23 to again roll. It will accordingly be seen that I have provided paper feeding mechanism for typewriting machines which will attain, among others, the ob'ects sought in an exceedingly simple, yet e cient manner. The pressurefii rollers, by means of the provision of the 4 pivotal support for the spring which main tains the pressure rollers in engagement with the platen roll, will be held in contact there withwith equal pressures, thereby insuring an eflicient and accurate 'fe'ed'of the pa er. The provision of the independent 'brac iets.

. also insures an. efficient feeding of paper even though different thicknesses of paper or a greater number of sheets thereof is fed between the pressure rollers and the platen at opposite ends of the machine. The feed rollers may also be readily released from the platen roll to free the paper, and the'.fingerj lever for performing this function is in a convenient position for manipulation.

Asmany changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown inthe accompanying-draw ingsshall be interpreted as illustrative and not in a limiting sense. i

Having described my invention, what I claim as new and desire to secure by- Letters Patent is: v 1. In a typewriting machine, the'co-mbi nation with the platen frame, a platen roll rollers running under the platen roll, pivotally mounted; carriers for supporting said feed rollers,'said carriers being provided with rearwardly extending arms, springs engaging said arms whereby said carriers'are moved toward the platen roll and the pressure rollers carried thereby are maintained in'engagement therewith, anendwise slidable member provided with cam portions brackets carried by: said 'Sl1&ftS,=; pressure rollers carried by said brackets, saidgbra ck an ets being prov ded with oppositelyfezitendf 105 carried thereby,'a plurality of parallel feed armpit engaged by 'saidarms and the brackets and pressure rollers carried thereby are swung from the platen 'roll.

3. Ina type'writing machine, the combination with the-'Qplaten frame and the platen roll carried thereby, of apair-of Shafts extending lengthwise of the platen frame beneath the platen roll and'in parallel relation with the same, a plurality of brackets carried by each of said shafts, a pressure.

roller carried by each of said brackets, each of said brackets being provided with an arm, spring means engaging the arms of said brackets whereby said pressure rollers 'are' spring pressed toward the platen. roll,

an endwise sliding bar disposed beneath said arms and having cam portions adapted to be en aged therewith, a spring for holding said ar in normal position, and a-finger lever havinga cam portion adapted to engage said bar and slide the same endwise to engage said cams with said arms, sald cam being provided with means for holding j said bar in the position to which it is moved thereby.

4. In a typewritingmachine, the combination with the platen frame carrying. the

platen roll of two sets of pressure roll car:

riers disposed beneath the platen roll, one.

set being arranged in advance of the other, shafts each supporting a set of carriers, springs pressing said carriers toward the v platen .roll, an endwlse moving bar having cam portions adapted to engage said carriers where'by the latter may be swung from the platen, and a finger lever provided with a notched cam adapted to move said endwise movable member and hold the same in fixed position after movement.

5. In a typewriting machine, the combination with the platen frame carrying the platen-roll, of a plurality of independent brackets pivotally. mounted in the platen.

frame beneath the platen roll, said brackets being provided with rearwardly extending. arms, a pressure roller carried by each of said brackets, springs engaging said arms and holding said pressure rollers in contact with the platen roll, an endwise. movable rod disposed beneath ,said arms and having cam portions for engaging the same, a roller carried by said rod, and a finger lever p'rovided with a cam which cooperates with said roller to move said rod endwise wherebythe cams thereof are caused to engage posed beneath the platen frame and extend- 6. In a typewriting machine, thev combination with the platen frame carrylng' the platen roll, of ,a' plurality of pivotally mounted brackets carried by the platen frame beneath the platen roll, a pressure roller mounted in each of said brackets, arms extending rearwardly from each of said brackets, springs engaging said arms whereby the brackets and pressure rollers are urged toward the platen roll, an and wise movable bar disposed beneath saidarms and having cam portions adapted to engage therewith, a roller carried at one end of Silld bar, a finger lever having anotched cam adapted to engage said roller and move said bar endwise, whereby the cams thereof 811- gage said arms and swing said brackets position to which it allel relation therewith and are'supported at, their ends in the platen'frame, a plurality Ofbrackets-jOurnaIed upon each of" said shafts, a pressure roller carried by each of said brackets, and a pivotally mounted spring having independent portions thereof engaged with each of said brackets and operating to urge the same and the pressure rollers carried thereby toward said platen roll.

nation with the platen frame and the platen 8. In a ty'pewriting machine, the combiroll carried thereby, of a pair of shafts dising in parallel relation therewith, said shafts being supported at their ends in said platen frame, .a plurality of brackets journaled upon each of said shafts, a pressure roller carried by each of saidbrackets, a pivotally supported spring having independent portions thereof engaging said brackets and operatingto urge said parts and the pressure rollers carried thereby toward said platen roll, and a common means for swinging said brackets simultaneously from the platen roll.

9.-In a typewriting machine, having a platen frame and a platen roll, the combination of a plurality of pivotally mounted pressure roll carriers disposed beneath. the platen roll, and a pivotally mounted spring engaging said carriers and holding the rogers thereof in contact withv the platen. ro

10. In a typewriting machine, the combination with the platen frame and the platen roll, of pressure rollers disposed beneath the platen roll and running, thereof, independent pressure roll carriers and a pivotally mounted spring member having portions thereofengaging said carriers and holding the pressure rollers in engagement with the platen roll.

11. In a typewriting machine, the combi her is actuated.

12. In a typewriting machine. the combination with the platen frame and the platen roll carried thereby, of pressure rollers dis posed beneath the platen roll, arranged in pairs, one pair being disposed in advance of the other, an independent pivotally mounted bracket for supporting each pressure. roller :1 pivotally mounted spring for each set of pressure rollers having portions thereof engaging each of said brackets and urging the same and the pressure roller carried thereby toward the platen roll, and a slidable member provided with cams one of which engages and swings each of said brackets when said member is actuated.

13. In a typewriting machine, the combination with the platen frame and the platen roll carried thereby, of a pair of shafts disposed beneath the platen roll, extending in parallel relation thereto and supported at their ends in the platen frame, a set of pressure rollers disposed beneath the platen roll comprising two pairs of rollers, one pair being disposed in advance of the other, independent brackets mounted upon said shafts, each of which supports one of said pressure rollers, a pivotally supported spring having portions thereof engaging each of said brackets and urging the same and the pressure roller carried thereby toward said platen roll, and a slidable member provided with cams one of which engages and swings each of said brackets from the platen roll when said member is actuated.

14. In a typewriting machine, the combination with the platen frame, and the platen roll carried thereby, a pair of shafts disposed beneath the platen roll extending parallel therewith and supported at their ends. in the platen frame, a plurality of independent brackets mounted upon each of said shafts, and a pressure roller carried by each of said brackets, a pair of rollers being mounted upon one of said shafts, and one of said pairs being disposed in advance of the other, a pivotally supported spring provided with two forked portions, a member of each fork engaging one of said brackets and urging the same toward the platen roll, and a slidable member provided with cams one of which engages and swings each of said brackets from the platen roll when said member is actuated.

15. In a typewriting machine, the combination with the platen frame and the platen roll carried thereby, of a set of pivotally mounted, independent brackets disposed beneath the platen, a pressure roller carried by each of said brackets, and a forked spring having each of the tines thereof engaged with one of said brackets, and a pivotally mounted support for saidspring.

16. In a typewriting machine, the combination with the platen frame and the platen roll carried thereby, of a set of independent pressure roll carriers disposed beneath the platen roll, a pair of shafts disposed in parallel relation beneath said platen rolls upon which said carriers are pivotally supported, a spring having oppositely disposed forked portions each of the tines of which engages one of said carriers and urges the same toward the platen roll, and a pivotally mounted bracket for supporting said spring.

17. In a typewriting machine, the combination with two platen frame and the platen roll carried thereby, of two sets of pressure roll carriers disposed beneath the platen, each set comprising a pair of front and rear carriers, a pressure roller carried by each of said carriers, shafts carried by the platen.

frame and interposed in the support of said carriers, a spring having oppositely extending forked portions, each of the tines of which engages one of said carriers and normally urges the same toward said platen roll, a pivotally mounted bracket for supporting said spring, and a slidable member common to each of said carriers having cam portions which engage, each of said carriers whereby when said member-is actuated said carriers .will be simultaneously moved from the platen roll.

18. In a typewriting; machine, the combination of a platen franreand the platen roll carried, thereby, of a lplurality of independent brackets pivota supported underneath the platen roll each of which is pro-1 arms and having cam portions adapted to engage those parts directly beneath their points of en agement with said springs and swing said rackets when said member is actuated, and,afinger lever having a cam portion adapted to engage and actuate said member.

"ing prngided with a longitudinally extendengagement with the platen roll, an endwise movable member resting upon said rail and having a cam port on for engaging sald carriers to swing the same from the platen roll, and afinger lever for actuating'said end- 7 Wise movable member.

20. In a typewriting machine, the combination With the platen frame and the platen roll carried thereby, said platen, frame ,be-

ing rail, a p'iurality of brackets pivotally mounted in the platen, frame beneath the platen roll, pressure rollers carried by said brackets, springs coo erating with said brackets to hold the pressure rollers in contact with the platen roll, an endwise movable member lying in contact WithI-said rail and having cam portions for engaging said brackets andfor swinging them from. the platen roll, and a finger lever having a cam adapted to engage said member and lockthe same in moved position.

21. In a typewriting machine, thecombination with the platen frame and, the platen roll carried thereby,, aidplaten frame being provided with a longitudinally extending rail, a pluralityof brackets pivotally mount:

ed beneath the platen roll, pressure rollers I carriedby said brackets, said brackets be ing provided with extending arms, a slidable,

member'lying in contact with said rail, and provided with cam means adapted to .engage said arms whereby said'brackets and the pressure'rollers carried thereby-will be swung from the platen roll, means for holding said slidable member in contact with said rail, and a finger lever provided with a cam adapted to engage and actuate said member.

22. In a typewriting machine, the combination with the platen frame and the platen roll carried thereby, said platen frame being provided with a longitudinally extending rail,,,a plurality of independent brackets piyotally, mounted beneath the platen roll, a pressure roller carried by each of said brackets, said brackets being provided with rearwardly extending arms, springs engaging said arms and holding the pressure rollers in contact with the platen roll, and an endwise Ipovable bar resting upon said rail, said bar being provided with a plurality of cam portions adapted to engage said arms whereby said brackets and e pressure rollerscarried thereby may be fi xswung from the platen roll, springs engaging said bar and holding the same in contact a with said rail, a finger lever provided with v a cam portion adapted to engageand ac'tu-f ate vsaid bar, and a spring for returningithfe I same to normal position after each actuation. 23. In a typewriting machine, thecombination with the platen frameand the platen I roll carried thereby, said. platen frame-being provided with a longitudinally extend-.

ing rail, a plurality of independentpres sure roll carrierspivotally mounted under-- neath the platen roll, a pressure roller car- 7 II ried by each ofsaid carriers, arms extending rearwardly from said carriers, springs engaging said arms and holding the pressure rollers in engagement with the platen roll, an endwise sliding bar resting upontsaid rail and having cam portions, one cam -por-' tion being provided for each of said arms,

guides fixed upon ,saidrail, and engaging said bar,; and friction springsvsecured to said guidesand holding said, bar in sliding contact with said rail. I

24:. Ina typewriting machine,-the combi-- nation of a platen roll, a bracket having two arms pivotally mounted beneath said platen roll, a pressure roller supported by one arm of said bracket, endwisemovable means engaging the other arm of said bracket adapted to move said pressureroller from said I1 platen roll, and resilient means for return-I ing said endwise position. 25. In a I typewriting machine, the combination of a platen roll, a pairof oppositely disposedbrackets mounted beneath said roll movable means to normal" I '-v in a fore and aft direction, a pressure rollercarried by each of said brackets adapted to engage said platen roll, and an endwise mov able member having a single meansadapted simultaneously to engage said brackets and move said pressure rollers from said" I platen roll. I

26. In a typewriting machine, the combination of a platen roll, a bracket pivotally mounted betweenits ends beneath said roll, pressure roller supported at one end of said bracket, endwise movable means adapted to engage the opposite end of said bracket and move said pressure roller out of contact with said platen roll, and means for locking said endwise movable means in its moved position to hold said pressure roller in a released position.

27. In a typewriting machine, the combination of a platen roll, a plurality of feed rollers in front and in back ofthe axis of said platen roll and normally in contact with said roll, a bracket pivotally mounted between its ends for each of said pressure rollers, means adapted to engage one end of each of said brackets to swing the pressure roller. out of contact with the platenyroll,

finger actuated means for actuating 5 said;.1so-

roll, .of a set of pressure rollers. a forked spring having its tines adapted to hold the rollers in cooperative relationship with the platen roll, and a pivotally mounted support for the spring.

30. In a typewriting machine, the combination with a platen, of a feed roll device including front and rear rolls, hinged brackets rocking independently of each other and supporting the rolls, spring means for pressing the rolls toward the platen, casting-off .and restoring mechanism engaging said brackets to drop the rolls from the platen, andm eans to prevent the brackets from swinging toward each other.

31. In a typewriting machine, in combination, a rotatable platen roll, a plurality of rollers spring-pressed thereagainst, a slid able member movable endwise to force said rollers out of contact with said roll, a pivoted lever movable in a plane at right angles to the axis of said roll for sliding said member to move said rollers, spring means constantly urging said member to free said rollers for pressure against said roll, and means to yieldably lock said lever when operated to slide said member.

32. .In a typewriting machine, in combination, platen roll, pressure rollers therefor, a tine spring adapted to urge the rollers toward the platen roll, a slide cooperae tive with said spring, and means comprislng a pivoted lever whereby pressure applied by' side of its pivot an d comparatively short arm on the other side.

33. In a typewriting machine, in combination, a platen roll, a pivotally mounted bracket carrying a press tre roller on one side of its pivot and having an engaging portion on the other side thereof, a sprlng adapted to urge the bracket relatively to the platen, and means comprising an endwise movable member and a pivoted lever cooperating therewith, whereby the bracket may be urged in the opposite direction, said lever having arms of different lengths on respectively different sides of its pivot.

3%. In a typewriting machine, in combination, a platen roll, a pivotally mounted bracket carrying a pressure roller on one side of its pivot and having an engaging portion on the other side thereof, a spring adapted to urge the bracket relatively to the platen, means comprising an endwise movable member and a pivoted lever cooperating therewith whereby the bracket may be urged in the opposite\ direction, said lever having arms of different lengths on respectively different sides of its pivot, and means 1 adapted to lock said member in dilferent positions.

In testimony whereof I aflix my signature,

in the presence of two witnesses.

NILS H. ANDERSON. Witnesses:

CHARLES H. STORRS, D. B. WESTIN.

copies of this patent may be obtained for five cents each, by addressing the commissioner or Patents, Washington, D. c.

Images