US225974A - ecaubert - Google Patents

Description

2 Sheets-Sheet 1.

BEGAUBERT. Paper-Feeding Machine.

Mar. 30,1880.

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2 ShetS ShBet 2. P. EGAUBERT. Paper-Feeding Machine.

No. 225,974 Patented Mar. 30,1880.

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N- PETERS, FHOTD'UTHOGHIPNER, WASHINGTON; [1.0.

tion of the paper-feeding apparatus.

FREDERIO EOAUBERT, OF NEW YORK, N. Y.

PAPER-FEEDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 225,974, dated March 30, 1880.

Application filed September 1, 1879.

To all whom it may concern Be it known that I, FREDERIG ECAUBERT, of the city and State of New York, have invented an Improvement in Paper Feeding Mechanism for Printing-Presses, 85a, of which the following is a specification.

I make use of a table to support the pile of paper, said table having a counterpoise or lifting device and parallel-motion bars, so that the table is raised bodily, and the top sheet of the pile occupiesa uniform position. Aslidingfriction-pad or rubber buckles up the top sheet to separate it from the others. A sheet'holder is lifted, the sheet flattens out, and in so doing is extended in between rollers that deliver the paper upon the feed-table to be taken by the gripers. A laterally-actin g pusher adjusts the sheet 'to the proper place and the operations are repeated.

In the drawings, Figure 1 is a vertical see- Fig. 2 is a plan view, and Fig. 3 is a diagram representing a different arrangement of the parallel-motion bars.

The bed-plate a is provided with two standards, b b, the faces of which are made with rack-teeth b for the pinions c c. that are upon a cross-shaft, c, that is supported by the table d.

60 are parallel-motion bars, pivoted together at 2. The lower ends of the bars 0 are pivoted to the standards I), and the upper ends are connected by a cross-shaft, 3, upon which are rollers beneath the table d. The upper ends of e are pivoted to the table (I, and the lower ends have a cross-shaft, 4, and rollers resting upon the bed-plate to. These parallel-motion bars open and close or swing as'the table is raised or lowered, and keep the top of the table and the pile of sheets carried by the said table (1 parallel or level; and upon the shaft 0 is a grooved or band wheel, f, with a cord or strap, 6, attached thereto, and passing over a pulley,

v7, to a weight, g, (shown by dottedlines in Fig. 1,) which serves to revolve the said shaft 0, and, by the pinions c acting upon the rackteeth, raise up the table (I and the pile of sheets thereon until they are stopped by either the sheet holder h or 7, hereinafter described. Hence the top sheet of the pile is always at a certain level, regardless of the number of sheets in the pile below it.

I remark that the weight 9 must be sufficient to turn the shaft 0 and lift the table (Z and its contents.

It will be apparent that a spring may take the place of the weight g, and that equivalent devices may be employed for lifting the platform automatically as the sheets are removed. W'hen there is not room for the parallel-motion bars beneath the table they may be at the sides of and above the table, as illustrated in Fig. 3. In this case there must be suspended ways for the rollers at the back end of the table.

The cross-piece I) on b and the frame Z support the horizontal bar l, upon which the stock on of the rubber n slides.

The driving-shaft tis supported upon a suitable frame, and at the end is a disk, with a crank-pin, 27, and connecting-rod 8 to the stock m of the rubber n, so as to reciprocate the same 011 the bar 1. The crank-pin should be upon a radial slide, so as to vary the throw of the crank, and the connecting-rod 8 should be variable in length, so as to correctly adjust the stock m of the rubber and bring the rubber nearer to or farther from the holder h, according to the thickness of the paper that is being fed, because with thick paper the rubber should be farther from the holder than with thin paper, in order that the paper may be buckled or arched up freely, as hereinafter described.

The lever 0 is pivoted upon the stock m, and at its outer end it carries one or more rubbers, n. A box or holder at the lower end of this lever 0 receives into it a block or piece of leather, rubber, or equivalent material, such as imitation rubber; and a screw, 10, is employed to clamp the block when in place. It is preferable to surround the rubber with a layer of paper or similar material, to prevent its adhering to the metal of the holder or box. There may be more than one of these rubbers, in'whieh case the lever 0 may carry a crossbar that has upon it the boxes or holders for the rubbers n, and these should be adjustable sidewise, so as to act upon the unprinted portions of the sheet when being fed for the second impression.

When the rubber stock is being moved in the direction of the arrow the rubber, resting upon the surface of the paper, moves the top sheet along and buckles or arch es it upward in the manner shown in Fig. 1, at which time the sheet-holder h is acting to prevent the forward end of the sheet moving; but as soon as that holder h is raised the sheet flattens out, and its edge is moved forward in between the rollers T1", and by them delivered upon the inclined feed-board s, as hereinafter described, the rollers being revolved constantly by suitable means, such as the band-wheel and belt12.

If the table d is arched upwardly to a slight extent, it will aid in causing the top sheet of paper to arch upwardly when acted upon by the rubber.

It is necessary to lift the rubber at before it moves back. For this purpose the stationary collar or stop 8 is provided upon the bar l,

against which the end of the lifting-fork t is brought by the movement of the rubber stock and held, while the further movement of the stock and lever causes the lifting-fork to pass between the tail end of the lever and the stock, depressing that end and lifting the other end and the rubbers. The ends of the fork act as springs to hold the parts in position, and there is also a guidepin at 1.3 and a slot in t.

Then the stock m is moved back the rubber lever is liberated near the end of the movement by the stationary collar 14 upon the bar I arresting the movement of the fork t, while the lever and stock continue to move, so as to pass away from the spring end of the fork and liberate the lever. The lever 0, running under the spring 15, bends the same, and as soon as the lever is liberated the spring throws the rubber down on the surface of the paper and holds it firmly until it has moved forward and carried the paper withit; then the rubberholder moves away from beneath the spring, to lessen the pressure and prevent the same moving more than the top sheet.

The sheet-holder It has to be raised and held up while the rubber buckles up the sheet and draws the end from beneath k. This holder is brought down to retain the next sheet, after which the holder h is raised. These motions are given by the following devices or similar mechanism for accomplishing the same purpose:

The holder it has a sliding stock in a vertical slide beneath'the bar I. It is drawn up by the spring 16. The rod to is connected with the rubber stock m and moves back and forth, and the cam-blade 18 on said rod to acts upon the upper end of the stock of the holder 70, forcing the same down after the back end of the top sheet of paper has been drawn from beneath it.

The cam-lever c is placed at right angles to the paper holder h, and its horizontal end serves to raise or lower the holder h. Its vertical cam end is acted upon by a stud or roller, 28, upon the slide-bar o, the other end of 1) being adjustably connected to the rubber stock, so that after said stock at and bar 1) have moved, as aforesaid, the stud 28 reaches the lever 11 and lifts the paper-holder h, and the sheet flattens out from its buckled condition, and its end passes in between the rollers 1' r and is drawn through and slides down the feed-board s.

The devices that operate upon the holders h and k are made and placed so as to act alter= nately and liberate the back part of the sheet while the front part is being held, and the rubber is moved forward, carrying with itthe back portion of the sheet; then the holder comes down at the back part upon the next sheet while the front holder is raised and the top sheet is passed away. In all cases the holders determine the place to which the top sheet in the pileis raised. If this feed-board were flat, the action of currents of air might prevent the sheet assuming the correct position or remaining in place. I make the'feed-board hollow or curved, so that as the sheet falls upon the same there will be space for the air to escape laterally after the top and bottom ends rest upon the feed-board, and any inequalities will flatten out as the sheet sinks into the curved form corresponding to the board, and the sheet is not liable to be blown out of place. To prevent the tendency of the upper end of the sheet to continue to move after the lower end is arrested by the griper-stops s 1 use a guard wire or rod, 8 above the feedboard, and beneath this the sheet slides as it passes away from the rollers.

Before the gripers take the paper it is adjusted laterally by the fence or fences 'w, to which a movement is given by the lever 20 and cam 21, so that the fence is brought up against one of the edges of the paper, and will move the sheet in a lateral direction sufficiently to bring each sheet into the same position for the gripers, regardless of any slight inequality in the position of the sheet upon the table 8. There may be a similar fence or fences at the opposite edge of the sheet, to insure its proper position against all the griper-stops and prevent the sheet remaining in a diagonal position.

The spring 23, or similar device, moves the fence back when the cam relieves the lever.

It will be apparent that there may be more than one of the longitudinal slide-bars Z, with the rubber stock, levers, and rubbers, and also that the axis 30 of the lever 0 may be a rod to which the lever is connected, and such rod may project endwise and receive upon it two or more levers and rubbers, so that all the rubbers are moved together by this axial rod.

When this feeding device is used with a ruling-machine the pair of rollers 4' 4" should be farther away from the front sheet-holder than shown in Fig. 1. In this case the rollers will not move as fast as the rubber; hence the rubber can bring forward a second sheet after the front holder has been lowered and then lifted, and the front edge of the second sheet will overtake, or nearly so, the rear edge of the first sheet as it passes between the rollers 'r r.

Upon the holder that contains the rubber n I attach a tube, in which is a sliding bolt, 25. The lower end of this bolt rests upon the sheet of paper, and in the table 01, I provide a slot and a stop-motion slide, (1 to operate the driving-belt or a clutch, so that when th'elast .sheet of paper has been removed the bolt will drop and engage the stop-motion slide, and the movement of the rubber will operate the stop-motion and prevent the further running of the machine.

I claim as my invention- 1. The combination, in a paper-feeding machine, of two paper-holders, mechanism for holding down and lifting the paper-holders alternately, a reciprocating rubber acting between the paper-holders, and mechanism to actuate the rubber, as set forth, so as to draw the sheet from beneath the back holder when that is raised, buckle up the sheet, and then pass the sheet off beneath the front holder when it is raised, substantially as set forth.

2. The combination, in a paper-feeding machine, of two holders, mechanism for actuating the same alternately, a reciprocating rubber, means for moving the same, as specified, and a pair of feeding-rollers that carry the sheet away from beneath the front holder when raised, substantially as set forth.

3. The combination, with the paper-holding table, of the racks b pmions c, a liftin g-weight, and parallel-motion bars 6 e, to raise the table and paper and maintain the parallel position of the sheets, substantially as set forth.

4. The rubber n in a case or receiver, in combination with the lever 0, rubber stock m, supporting-bar l, and mechanism for imparting a reciprocating motion and for raising the rubber on the backward movement, substantially as set forth.

5. The combination, with the rubber and its lever and stock, of a sliding fork, t, and stops 8 and 14, substantially as and for the purposes set forth.

6. The combination, with the paper-holder 5 d k and rubber n, of the sliding stock m, rod u, cam-blade l8, and means for raising the holder k, as and for the purposes set forth.

7. The paper-holder h, sliding vertically, in combination with the rubber n, the lever o, and the slide-bar 41, substantially as set forth.

8. The feed-board s, placed at an inclination, and having a hollow central portion, in combination with the sheet-supplying device and the griper-stops, substantially as set forth.

9. In combination with the inclined feedboard 8 and griper-stops 8 the fence w at one side of the sheet, and mechanism, substantially as set forth, for giving to the fence a lateral movement, as specified.

10. The combination, with the reciprocating rubber in a paper-feeding mechanism, of a drop-bolt to rest upon the paper, but to operate a stop-motion when the paper is exhausted, substantially as set forth.

11. The combination, in the paper-feed, of the feed-board s, placed at an inclination, and having a hollow or curved central portion, and the guard-rod 8 above the table, the rollers 1" 1", and stops, substantially as set forth.

12. The combination, in a paper-feeding mechanism, of a rubber, means for reciprocating the rubber and for lifting it upon the backward movement, and a spring that is strained by the backward movement of the rubber and acts to force the rubber to the surface of the paper before the rubber moves forward, for the purposes and substantially as specified.

Signed by me this 26th day of August, A. D. 1879.

FREDERIO EOAUBERT.

Witnesses:

HAROLD SERRELL, WILLIAM G. Mo'rT.

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