US135597A - Improvement in paper-feeding machines - Google Patents

Description

s. SCHOLFIELD & C. E. BAKER.

Paper Feeding-Machines.

No. 135,597: Patented Feb. 4, 1873';

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ITNEESE'S. INVENTUR? AM. PHOTO-LITHOGRAPIIIC an M)! (ossonnsmacgss) SOGRATES SUHOLFIELD, OF PROVIDENCE, BHODE 1SLAND,.AND CHARLES E. BAKER, OF MONT CLAIR, NEW JERSEY.

IMPROVEMENT IN PAPER-FEEDING MACHINES.

Specification forming part of Letters Patent No. 135,597, dated February 4, 1873.

To all whom it may concern:

Be it known that we, SOCR-ATES SCHOL- FIELD, of Providence, in the county of Providence and State of Rhode Island, and CHARLES E. BAKER, of Mont Clair, in the county of Essex and State of New Jersey, have invented an Improvement in Paper-Feeding Machines,

of which the following is a specification:

The nature of our invention consists in pressing firmly upon the top of a pile of paper with an inclined holding pin or point, and at the same time producing a movement of the top sheet by means of friction-pads, suction-tubes, or by nippers or other suitable devices, as heretofore used for moving sheets of paper singly from one place to another, causing the inclined pressing pin or point to tear through and raise the moving top sheet, so as to rest with its full holding power upon the sheet below, the friction between the two sheets being thereafter insufficient tocause the removal of the lower sheet from under the inclined pressing-point; it also consists in a suitable combination of devices for operating the inclined pins and friction-pads in timely relation to each other, and to raise the sheet of paper from the pile in order to properly present it to the carrying-gripers of a printing-press or othermachine.

Figure l is a plan View of our invention. Fig. 2 is a sectional elevation taken in the line mm. Fig. 5 is a view of one of the inclined holdingpins as preferably constructed. Fig. 4. is a cross-section of the same as taken in the line y y. Fig. 3 is a partial view of a sheet, showing the resulting form of the puncture made by the pin when constructed as shownin Fig. 5.

In the drawing, A is the pile of paper, over which is placed the cross-bar B, which is made capable of an up-and-down movement in the slides O G. The inclined pinsD D are attached to the cross-bar B, and may be made adjustable thereon so as to accommodate different sizes of paper, and any suitable number of such pins may be employed. The friction-pad E is arranged upon a slide, F, so as to rise and fall with the cross-bar B and pins D D. To the slide G, which extends upon both sides of the pile of paper, are attached the upright standards H H H H, which engage with the ends of the cross-bar I attached to the pad E. The cross-barB is connected to the slide G by means of the two cords J J, passing through the fixed rings K K. The slide Gr having been drawn back to the position shown at G by the dotted lines, and apile of paper, A, having been placed upon the bed L under the cross-bar B, the subsequent backward movement of the slide G to the position shown in Fig. 1 will allow the cross-bar B, with the attached pad E and inclined pins D D, to drop to the top of the pile of paper, so as torest thereon with a pressure which may be properly adjustedby means of suitable weights. After the pad E and the pins D D reach the position upon the top of. the pile of paper, as described, the subsequent movement of the slide G, through the remaining portion of its stroke y, will, by means of I the standards H H, which now strike the ends of the cross-bar I, cause the pad E to move with the slide G, thus drawing back the sheet of paper it onto the pins D D, and elevating the edge, as shown in Fig. 2. Now, upon drawing the slide G back to its previous position the cross-bar B will be raised by means of the cords J J, thus lifting the front edge of the sheet on the pins D D, as shown by the dotted lines. From this position the sheet is to be taken by suitable carrying-gripers arranged to remove the sheet to the proper point, from which it is to be taken by the gripers of the revolving cylinder. The backward movement of the slide G, as above, will also draw back the pad E in preparation for a repetition of its stroke upon the paper during the subsequent reversed movement of the slide, as before, by means of the standards H H, which strike the ends of the crossbar I, as shown by the dotted lines.

A preferable construction of the holdingpoint of the pin D is shown in Figs. 4 and 5, Fig. 4. being a cross-section taken in the line 3 y of Fig. 5; but various other forms of construction may be advantageously used.

Fig. 3 represents a portion of a sheet of paper, which has been removed by means of the pin D of Fig. 5, showing the resulting form of the puncture a.

In the practical application of our invention, we propose to remove the sheet of paper from the pin D, either by drawing the paper entirely over the pin, as set forth by us in a prior application now on file in the Patent Ofice, or

by retracting the pin from the orifice made in the sheet, or by drawing the paper from the pin by means of gripers, as proposed in the present applicationthis latter method appearing to us as most suitable for application to the ordinary rotary printing-presses, where exactness of register is not imperatively demanded, and but ,little room can be spared for such apparatus-the former methods being applicable to other machines where sufficient room can be easily obtained and a correct system of registering is required. 7

The holding-pin D, owing to its non-penetration of the sheet of paper when resting under the necessary preliminary pressure, and at the same time serving to tear out a slight chip, as soon as the paper receives its proper motion through the action of the friction-pad 'E, or other equivalent moving device, is in cluded in the claim of another application now on file in the Patent Office therefore we make no claim in this specification to a holding instrument with a non-penetrating point or edge, which serves to tear a slight chip from a moving sheet of paper; but

What we claim as our invention, is

1. An inclined holding-pin, D, arranged to press upon the top of a pile of paper, and upon the inclined point of which the top sheet is drawn by means of friction-pads or otherwise.

2. The combination of the inclined pins D D, cross-bar B, pad E, and slide G, operating to first draw the sheet upon the pins, and then to raise the edge of the sheet, substantially as described.

SOORATES SGHOLFIELD. CHARLES E. BAKER. Witnesses:

WILLIAM E. MEAD, H. S. CHANDLER.

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