US1536670A - Paper-feeding device - Google Patents

Description

May s, 1925 1,536,670

I l.. a. GRAsBr-:RGER ET AL PAPER FEED'ING DEVICE v Filed Mali 15. 1922 Patented May 5, 1925.,

* Unirse STATES PATENT OFFICE..

LAWRENCE B. GRASBERGER AND JAMES T. FAY, OF RICHMOND, VIRGINIA.

PAPER-FEEDNG DEVICE.

Application Iled `May 15,

T all 'Lo/wm t may concern.' Y

Be it known that we, LAWRENCE (inns nnnenr. and JAMES T. FAY, both citizens of the United States of America, of Richmond, county of Henrico, State of Virginia, United States of` America, have invented certain new and useful improvements in Paper- Feeding Devices; and we do hereby declare` the followingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which lit ai pertains to make and use the saine, reference being had to the accompanying drawings, and to letters or figures of reference marlred thereon, which form a part of this specification. y

Our application relates to feeding devices for paper for printing and' other' presses and wehave found that the principle involved inV our Patent No. 1,416,404-, May 16, 1922, for feed roller is not only applicable to roller forms of feed devices, but may be applied to various other types of devices, not only for printing presses but for iniineograph, hector graph and other manifolding machines.

The present application is therefore, a continuation of our aforesaid co-pending application and its object is a construction'in which there is arigid non-frictional paper "e-eding element co-acting with a yielding element extending in the same surface as the surface of the non-frictionalv or positively engaging element, and which upon'pressure will yield and allow the rigid element to slightly protrude or extend beyond the snr face of the yielding element. The material of which the yielding. element is made is preferably a friction material, suoli as rubber, but may be one that has less frictional action on paper, such as felt, leather, cotton, or any other material that will slightly yield or deform under pressure and resume its original form after the pressure is removed.

Another object of our invention, especiah A ly of the roller type, islan improved manner of mounting the rollers, so-that they may be easily removed Vfor washing oft' the ink. Other details of construction and modifications will hereinafter be described with reference to the drawings in which like parts are similarly designated and in which:

Figure 1 is a side view,`

Fig. 2 is a plan view, and

1922. Serial No. 561,118.

an enlarged scale the roller partly in cross-V section;

F ig. l' is an elevation of a serrated disc; Fig; 8 shows two co-operating long paper feed rollers; y

Fig. 9 is an elevation of the roller shown in lfig. il;

Fig. 10 is a perspective view of an arcuate form of feeder partly in section;

Fig. 11 is a section of a flat form of feeder. All the various forms of feeding devices shown embody a rigid portion or element that positively engages the paper, but does not frictionally feed it, adjacent to the yielding material preferably, but not necessarily rubber, so that the feeding surface upon the application of pressure will allow the rigid portion or element to slightly project or protrude and positively `engage the sheet, by slightly biting into Vthe" surface. lVhile abraiding niaterial for the rigid element s uch as anemery wheel or sand stone may do in some instances, it 1s generally unsuitable because particles of these materials be- 'come loosened and fall on the surface to be move the roller A without the use of Vany tools. To this end the edge of the cross piece 2 is rounded as shownat 7 and the side piece 5 is rounded as at S. These two sides -i and '5 are substantially triangular or sector shaped in form to forni a narrow front portion 9 in which is formed a slot 10. The pivoted side 5 is held in operative position by a coil spring 11 extending preferably between the two sides and between the roller and the cross piece 2.

'The reduced ends 12 of the shaft 13of the ico roller A. has bearing in these slots, and on the shaft are two flanges 14, screwed on to threaded portions 15.

The roller itself is composed of layers or discs of rubber constituting rings 16 between which is included a metal plate formed as a serrated metal disc 17 preferably of steel. These serrations are preferably triangular or saw toothed as shown at 18 Fig. 7. The rubber rings or dises 1G and the metal serrated disc 1'? easily slip onto the shaft 13 and are compressed, fastened or clamped by screwing `the flanges 14 on the threaded portions 15 of sha-ft 13.

In the particular form shown, the flanges 14 are serrated, and act somewhat as ratchets, there being stationary stops or pawls 19 that co-operate with them. rIhese stops or pawls 19 are preferably adjustable to and from the flanges 14 by set sere fs 20. Then the roller is moved forward by the arm 1 the teeth of the flanges engage the pawls and are prevented from turning, while when the arm 1 recedes the roller can move slightly to the front in slots 10, disengage from the pawls and rotate as it is drawn towards its initial position by the arm 1.

In the modified form of roller, Figs. and 6, the roller is shown covered with rubber 21 and small heaced brads 22 struck through it. rIhe heads Q3 of these brads lie against the surface of the shaft 13 and are supported thereby.

In order that the serrated metal disc 17 or one provided with pins as the case may be shall be held firmly between the two rubber rings or discs 1G, we cut holes Q4 through the disc. These holes are of any suitable form, or they may be recesses as the maker may elect. IVhen the serrated metal disc 17 and the rubber rings 16 are clamped together by the flanges 14 the sides of the rubber rings 1G squeeze into the holes 24 and prevent the disc 17 from rotating when heavy pressure has to be applied as in feeding card board, so that the roller turns as a unit, with the dises mutually locked laterally.

In Fig. 9 we have shown another construction of roller in which the shaft has secured to it the flange 2G by soldering or otherwise and is provided with a threaded end 27 of reduced diameter. 'I'he other ange 52S has integral with it a stub shaft 29 that is internally threaded and the two parts are screwed together as shown. IBetween the rubber discs or rings 16 and alternating` with them, are metal discs 30 and 31. The former provided with several rows of projecting' pins and the latter with a single row. The ends of the pins are flush with the surface of the roller. No mechanical means are necessary to key the rubber rings or metal discs on the roller shaft so that when one or both flanges are removed the rings and discs can be readily slipped otl` for replacement of worn parts.

In Fig. 8 we have shown two long paper feed rollers between which the paper or card board is to be fed. These rollers are geared together by gear wheels 8.J and one of which gears may be removed when desirable or necessary.

Any of the forms of roller surface shown in Figs. 4, 5, G, S and 9, may be used for rollers to be mounted in the frame shown in Figs. 1-3 and if one form is not suitable for the work in hand, another form may be quickly substituted and mounted in the frame.

F 10 shows an arcuate feeder having a hollow metal body 34, in which are set pi s 35 whose ends are flush with the surface of the exterior thick rubber band In Fig. 11 the body 258 is flat, has the pins 3G set therein. These pins pass through vthe yielding material S9 which is felt or leather.

In all the various constructions, there are provided a series of metallic points flush with the surface of the yielding material, whether these points be on a metal disc or pins passing through the rubber, felt or other friction surface.

The arrangement also shows .layers of yielding material alternating with metallic sheets or plates, having points or sei-rations at their edges, and these points may be formed by sries of pins directly or by pins set in the edge'of a plate of metal. The pins constitute therefore, a forni of serration and have the same function and etleet. as teeth on the edges of the discs.

Idle claim:

1 il paper feeding device comprising rigid paper engaging means 'positively engaging the paper, adjacent yielding means for frictionally engaging the paper and flush with said rigid means and devices compressing said means between them, whereby when pressure is applied to said device aid rigid means may project slightly beyond the surface of said yielding means.

2. it paper feeding device comprising rigid substantially nonsfrictional paper engaging means, consistingof a series of metallic points, a yielding material capable ot frictionally engaging the paper, said points being substai Yially iinsh with the surface of the yielding material and devices for coinpressingsaid means between them.

3. A paper feeding device Vcomprisingl rigid means, operating to substantially non"- frietionally engage the paper surrounded by yielding material operating to frietionally engage the paper. said rigid means arranged to extend beyond the surface of said yielding means when pressure is applied to said device and adjustable devices between which said means and material are compressed.

lll)

CII

el, i paper feeding device, comprising a series of metallic pins, a yielding material lthe ends of said pins arranged liush with the ol' said pins ail anged flush with the rubber surface, and actuating wheels between which said layers and plates are held.

7. ipaper feeding device, comprising a pair of sides, Vone of which is pivoted to move with respect to the other and a paper feeding roller journalled in said sides.

S. il paper feeding device, comprising a pair ot sides, one or which is pivoted to move with respect to said side, a spring to hold said pivoted side in normal position and a roller jeurnalled in said sides.

9. A paper feeding device, comprising a pair of sides, having bearing slots therein, a paper feed roller journalled in said slots Y betweenV said sides and having movement therein.

10. A paper feeding device, comprising a pair of sides having bearing slots therein, a roller between said slides and journalled in said slots, a ratchet movable with said roller aiid'a stationary pawl for said ratchet.

ll; Atpaper feeding device, comprising a pair ot Vsides having bearing slots, therein, a roller journalled in said slots, a ratchet movable. with said roller and an adjustable stationaryl ratchet cooperating with said atchet p Y l2., In a paper feeding device, a pair of sides, one of which is pivoted to swing with respect to the other a spring to held the pivoted side. in normal position, said sides having bearing slots therein, a feed roller `journalled in said slots, a ratchet on said roller and an adjustable stationary pawl cooperating with said ratchet.

18. ln a paper feeding device,a roller comprising discs of yielding material, alternating metal discs provided with points, a shaft in which said discs are mounted Aand a pair oi flanges on said shalt between which said discs are clamped.

la. 1n a paper feeding device, a roller comprising discs of yielding material, metal discs having paper engaging points, a shaft on which said discs are mounted and flanges on said shaft between which said discs are clamped, said i'langes constituting ratehets.

l5. ln a paper feeding device, a roller comprising discs of rubber, alternating metal discs, a shaft on which said discs are mounted, said shaft being threaded to clamp the discs between them,

16. in a paper feeding device, a roller Acomprising rubber discs, alternating metal discs, pins proj eeting from the edges of said latter discs whose ends are flush with the rubber surface, a shaft on which .the discs are mounted and anges on said shaft between which said discs are held.

l?. ln a paper feeding device, a roller comprising alternating discs of metal and ci a yielding material, a shaft on which said discs are mounted, means to eliiect the mutual lateral engagement of the metal and yielding material.A

18. In a paper ceding device, a roller Y comprising alternating discs of metal and rubber, said metal discs having perforations therein i":or mutual lateral engagement with the rubber to loci; them together.

ln testimony that we claim the oregoing as our invention, we have signed our names.

Lawiiniicn n. eiiiisnnnenn. .minis rriiv.

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