US1644549A - Structure for feeding cut-out sheets - Google Patents

Description

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.AND SMITH COMPANY, F PHILADELPHIA, PENNSYLVANIA, A CORPORATIONDF PENNSYLVANIA.

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.application and January as, 1925. serial ne. 5,197.

' My invention relates to the method ofand structure `for feeding to any suitable destination, as an 'adhesive-applying machine, cut-out 'sheets or blanks, yutilizable 'for any suitablepurpose, as, for example, for wrappingv or covering boxes. p

Diiiiculty is encountered infeeding from a pile or stack sheets or-blanks of paperor other material, a considerable portion of whose area lying within the outer edges or margins has been cut away or removed,

forming openings or` apertures whose ex-l tent 'is a considerable-portion of the entire face area of the sheet or blank. An edge of the opening or cut-out is likely to catch upon the lopposite cut-out edge of the pile or stack, `particularly"when the sheet is lso limp or lacking in self-support as to become deformed during the operation of removal Ifrom the stack. g

This diiiculty is overcome in accordance with my invention, and more particularly when the sheets are withdrawn one by one from the top of the stack, by utilization of a guiding structure-or member extending from beneath the stack to one side of the cut-out portion thereof intoand upwardly through the cut-out portion .and projecting beyond the forward or opposite edge ofthe cut-out in contact with the top of the stack.

My invention resides in the method and structure hereinafter described and claimed.

For an understanding of my method and for an .illustration of my structure, reference is to be had Ito the accompanying drawing, in which:v

Fig. 1 is a side elevational view, partly in vertical section, of apparatus embodying my invention.

Fig. 2 is a plan view of a stack and the associated guide member.

Fig. 3 is an edge view of the guide memr. Referring to the drawing, there is disposed upon the support or table 1 a pile or stack S of sheets, of paper or other material, to

vthe vguide member or ton conveyor belt v11,vvhiclt1 passes over idler 12 and is driven by the rolls 13 and 14:. 'As

indicated in Fig. 2, the sheet s has cut out.

therefrom a considerable portion of its area within its edges or margins forming aperture or cut-out O. Cut-out sheets of thisy character inthe stack S will present a forwa'ld or front cut-out wall 15 and the rear wa 16.Y

For picking a sheet from thevstaclr and delivering it toA the feed rolls-.2 and jover e 17, "there is provided a suction roller 18, having the bore 19 continuously in communication with a vacuum pump, and having in the face thereof a cup or recess 20 in communication with the bore 19 through the passage 21 at which time the roll 3 and tongue 17 are in a position toward the left, Fig'. 1, removed from above the stack S.

By suitable mechanism, not shown, the I roller 18 is moved along with roll@I 3 and tongue 17 forwardly. and backwardly and simultaneously to some extent rotated to perform its function of picking up from the stack S and delivering it asaforesaid, from tongue 17 vto rolls 2 and 3. The move- `ments of roll 3, tongue 17 and roller 18 may be effected by structure of the character disclosed in ANitsch and Baker application Serial No. 3,316, filed January 19, 1925.

The position of the roller 18 at the time of picking up a sheet is indicated in dotted lines Upon application of suction, a sheet is drawn into contact with the roller 18, which in rotating wraps the sheet partially around.

itself, and by motion of translation of roller 18 delivers the sheet as aforesaid to the rolls 2 land 3. When the sheet is limp, or in any event insufficiently self-supporting, it will at the portion to the rear of the rear cut-out edge 16 sag or become otherwise deformed, and in further movement forwardly toward the left will, or is likely to, catch upon the forward wall 15 of the cut-out of the stack S.

To minimize or prevent this behavior on the part of the sheet undergoing withdrawal from the stack, there is provided a guide member 22, preferably 4of sheet 'materiaL preferably more or less sti, though yielding or resilient, The sheet 22 may consist of metal, paper, or cardboard or equivalent. It may be said to comprise the upwardly or inclined guiding portion 22,and the forwardly extending portion 23, adapted to lie upon the top of the stack to the front of the cut-out wall thereof. It may, in addition, have the rearwardly extending portion 24 lying upon, held between the bottom of the stack S and the support 1, or secured to support 1 to the rear of the cut-out wall 16.

In withdrawing or feeding a sheet from the stack S as above described, as it ad-` varices from the right toward the left,'the

rear portion or Hap thereof may sag into the opening O of the stack and the forward edge 16 of the sheet will eventually engage and ride up on the guide member 22 without. catching upon the forward wall of the cut-out of the stack.

What I claim is:`

k1. Sheet-feeding apparatus comprising a support for a stack of cut-out sheets, and a sheet-like guide member of flexible material extending from within the cut-out of the stack over the forward upper edge thereof and resting upon the' successive top sheets of the stack. l

2;. Sheet-feeding apparatus comprising a support for a stack of cut-out sheets, a sheetlike guide member `of flexible'material extending from within the cut-out of the stack over the forward upper edge thereof and resting upon the successive top sheets of the stack, and means for picking a sheet from the top of the stack and withdrawing it from beneath the forward portion of said guide member.

l3. Sheet-feeding apparatus comprising a i support for a stack of cut-out sheets, and a guide member extending forwardly from the rear of the rear bottom edge of the cutlout of the stack forwardlyand upwardly therethrough from the forward upper edge thereof for guiding the rear edge of the cut-out of eachsheet withdrawn from the stack.

4. Sheet-feeding apparatus comprising a su ort for a stack of cut-out sheets, and a guldemember of exiblesheet material extending forwardly from the rear of the rear bottom edge of the' cut-out of the stack forwardly and upwardly therethrough over the l forward upperedge thereof for guiding the rear edge of the cut-out of each sheet with-- drawn from the stack.

5. Sheet-feeding mechanism comprisin a support for a stack of cut-out sheets, a guide tongue,a guide member having a guiding surface extending from within the cut-out of the stack over the forward upper edge thereof, and means for applying suction to the top sheet of the stack and for delivering the forward portion of said she'et on to said guide tongue, the rear edge of the cut-out of said sheet during its withdrawal moving forwardly on said guide member.

6.y Sheet-feeding apparatus comprising a support for a stackof cut-o-ut sheets, and ya guide member 1 extending diagonally rear edge of the cut-out of each sheet withdrawn from the stack..

8. Sheet-feeding apparatus comprising a support for a stack of cut-out sheets, and a guide member normally resting on said sup# port and extending through the cut-out of said stack into engagement with and overlying the toprnost sheet thereof at the for- `ward upper edge of the stank for guiding the rear edge of the cut-out of each sheet withdrawn from the stack.

9. Sheet-feeding apparatus comprising a support for a stack of cut-out sheets, and a ,guide member normally resting on said support beneath the stack at the rear bottom edge of the cut-out and extending forwardly" and upwardly therethrough intoengagement with and overlying the topmost sheet of the stack at the forward upper edge thereof for guiding the rear edge of the cutout of e'ach Sheet withdrawn from the stack.

WILLIAM H.,STREEPER.

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