US2086138A

US2086138A - Paper feeding device

Info

Publication number: US2086138A
Application number: US62895A
Authority: US
Inventors: Fred M Roque
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-02-08
Filing date: 1936-02-08
Publication date: 1937-07-06
Anticipated expiration: 1954-07-06

Description

July 6, 1937. F. M. ROGUE 2,086,138

' IAPER FEEDING DEVICE Filed Feb. 8, 1956 2 Sheets-Sheet l INVENTOR fled/1. ogu

ATTORNEY July 6, 1937. F. M. ROQUE 2,086,138

' PAPER FEEDING 'DEVIGE Filed Feb. 8, 1936 2 Sheets-Sheet 2 Fred )1 7 8 TTORNE Patented July 6, 1937 UNITED STATES PATENT OFFEQE 2 Claims.

The present invention relates to paper feeding devices, and more particularly adapted to feed single sheets from off a pile, in succession and in proper frequency, into duplicating machines, as for instance, what commonly are known as mimeograph machines and the like.

The principal object of this invention is to provide a device of the'character described, which is of novel, improved and extremely simple construction, embodying less parts and employing less moving parts than occur in devices of similar purpose heretofore known.

Another object of the present invention is to provide a paper feeding device of the class mentioned, which is cheap to manufacture, certain in action and efficient in use.

To attain these objects, and others which will become manifest as this disclosure proceeds, in an embodiment of my present invention as adapted for use for instance with a mimeograph machine, I provide a table, whereon shall rest the pile of sheets to be singly fed, over which is a horizontally journalled shaft which carries a sheet-shifter arm for periodic contact with the top sheet of paper, and a cam-follower arm for rolling contact on, and to and fro along a cam which is carried on a connecting rod adapted to oscillate said shaft towards and away from the drum of the aforesaid machine; the contour of the surface of the cam being such, that on the forward movement of said shaft, the sheetshifter arm is in contact with the top of the pile, while on the backward movement of the shaft, said arm is off the pile.

This invention is capable of numerous forms and various applications without departing from the essential features herein disclosed. It is therefore intended and desired that the embodiment shown herein be deemed illustrative and not restrictive, and that the patent shall cover whatever features of patentable novelty exist in the invention disclosed; reference being had to the appended claims rather than to the specific description herein to indicate the scope of the invention.

In the accompanying drawings, forming part of this application, similar characters of reference indicate corresponding parts in all the views;

Fig. 1 shows in perspective, an embodiment of the present invention used in connection with a mimeograph machine.

' Fig. 2 is a front view of Fig. 1, showing the relative position of the various essential components at the commencement of the sheet feeding stroke.

Fig. 3 is a similar view at the end of the feeding stroke, which is the commencement of the return stroke. m

Fig. 4 is a top View of my device shown in Fig. 3. 1

In' the drawings, the numeral i0 is used to indicate generally a mimeograph machine or device of similar purpose, having a drum l I and a shaft l2, which latter rotates once per revolution of said drum. I provide a table l3,'having 10 its side legs l4, secured to the frame of machine H]. A pile of paper sheets 85, rests on said table between the pairs of guides it and ll, which can be slid along the slots i8, and fixed at any position by means of the nuts E9. The guides 15 it have a'facing of sponge rubber 2B.

A yoke, indicated generally by the numeral 2 I, comprises the substantially upright parallel arms 22, one at each side of the table l3, carlied on a shaft 23 which is mounted horizontally through the table legs 14. 24 is a tie rod between said arms 22. A shaft 25 is horizontally suspended between the top ends of they arms of said yoke 2|, and is removably journalled therein. This shaft is parallel to the axis of the drum 25 At about the middle, there extends from shaft. 25, a sheet-shifter arm 25, which terminates at its free end in a sponge rubber shoe 21, for contact with the top of pile l5, and at an end, there extends from said shaft, a cam-follower arm 28,

having a roller 29 at its free end, for rolling contacton, and to and fro along a cam member 30, which is integral with, or as shown secured to a connecting rod'3l, to be carried thereby. This connecting rod is pivotally linked at its ends to an arm of the yoke 2!, at point 32, and to a crank member 33, which latter is carried on a projecting end of shaft E2. The contour of the contact surface of the cam 30, is essentially 40 a substantially horizontal surface portion 34, intermediate an incline 35 upwards towards the drum H, and the incline 36 downwards away from said drum.-

In operation, referring to Fig. 2, which illus- 45 trates the condition at the commencement of the sheet feeding stroke, the shoe 21 of the shifter arm 26, is in frictional contact with the sheet of paper uppermost on the pile l5, and as shaft. [2 rotates, the action of the, connecting rod 3|, 50 will bring the yoke 2| and all it carries, towards the drum II, and said top sheet of paper will be shifted or slid partially off the pile and fed into the machine l0. Said shoe 21, will remain in constant contact with the top sheet during the 55 entire feeding stroke, for at no time during such forward movement will the cam 30 cause arm 28 to be lifted. However, as soon as this forward stroke is completed, the moving connecting rod 3| will carry cam 30 upward, to make contact with and suddenly lift the roller 29, whereby shaft 25 will rotate slightly clockwise, thus lifting shoe 2! upward and off the pile I5.

I now refer to Fig. 3, which illustrates the condition at the commencement of the backward stroke where shoe 21, has just been lifted off the pile l5. As shaft I2 continues to rotate, the roller 29 will move backward along the contour surface of the cam 30, for geometrically speaking, there occurs a change of shape of the triangle formed by the lines of the connecting rod 3|, the camfollower arm 28, and the yoke arm 22, and at the end of the stroke, said roller will fi'nally fall. down the incline portion 36, causing shoe ZIto resume contact with the pile l5, ready to repeat the cycle with respect to the sheet of paper now on top of the pile. It is to be noted, that the shoe 2! for the greater part of the backward stroke, rides along apractically horizontal line.

Adjustment of the position of pivot 38.along. slot 3! in the crank member 33, accomplishes a change of the'line of shoe and sheet contact, towards or away from the drum H, for it is desirable to use this feeding device for various sizes of paper.

I claim: 1 a

1. In a paper feeding device of the class described, a table, an arm pivoted at the side of the table and extending above the plane thereof, a crank, a connectingrod pivotedly linked to the crank and arm to oscillate, the latter, a cam member carried on the 'connecting'rod, a shaft journalled in the arm and extending over and above the table, a sheet shifter arm and a cam follower arm, both carried on and extending from the shaft and means to rotate the crank; the cam follower arm being in such position on the shaft for contact with, and periodic movement to and 'fro along the cam member.

2.In a paper feeding device of the class described, a table, a yoke including a pair of parallel arms pivoted at opposite sides of the table and each'of said arms extending above the plane of the table, a crank, a connecting rod pivotedly linked to the crank and one of said yoke arms to oscillate said yoke, a cam member carried on the 7 connecting rod, a shaft'journalled in said arms