US2366296A - Holder for sheet material - Google Patents

Description

Jan. 2, 1945.

c. TURN ER HOLDER FOR SHEET-MATERIAL Filed June 16, 1942 am. M

Patented Jan. 2, 1945 HOLDER, FOR SHEETlMATERIAL Cameron Turner, Beverly, Mass, .assignor to United Shoe-Machinery Corporation, Flemington, N. J.,. a corporation of New Jersey Application June 16, 1942, Serial ,No. 447,307 8 Claims. (Cl. 242-55) My invention relates to means by which sheets of material may be delivered to or received from a support upon which they are to be subjected to an operation, one of the several possible applications of the invention being in connection with the presentation of sheets of leather, fabric or the like to the action of dies in the well known clicking machine. It may, however, be utilized whenever material of this character is to be manipulated by an .operator upon a supporting surface to place different areas in operating position. 1

It is an object of this invention to facilitate such operations as above noted, and to protect the material from being marred or soiled. With this end in view, 'I combine with a material-support, as the cutting block of a clicking machine, a material-delivering tube and a material-receiving tube situated at opposite sides of the support, each of the tubes having a throat extending along the edge of the support and through which the material may pass. throat is preferably curved downwardly and outwardly from the support, and from it may extend toward the support a material-guiding wall or apron. The outer wall of the throat is shown as curved over the inner wall to provide a guard or shield. A roll of material, drawn from one tube across the support and entering the other tube, is directed between the overlapping curved walls forming the throat and over the extension from the inner'wall, in such a manner that it will at all timesreceive the effective support of smooth surfaces. It will be held rolled within the tubes and between these maintained. atthe plane of the surface of the support, and at no point will it be abruptly bent or rubbed in such protect the material from contact with the body' of the operator and with certain of the operating elements, as the pressure-post of a clicking machine. Since, because the size of the sheet-material operated upon may be such that its rolled ends project from the open ends of the tubular holders, I increase the resistance of thes ends to bending and thus deforming the material, by making the tubes of generally elliptical cross section with the major axis of the ellipse extending in a substantially vertical direction. The unsupported portions are thus stiffened, because of the action of the weight of the material in the The inner wall of the direction of the maximum transverse dimension of the roll. The tubes or holders are readily applied to a machine with which they are to be employed by spaced brackets, which may be secured to the frame of said machine by the same attaching members as join the material-support to the frame. In a clicking machine, these mem-'.

bers are the bolts by which the cutting bed is held upon the frame. In some connections it may be important that there be a capacity for accommodation of. the material-holding tubeto the supporting surface of the machine. In click ing machines, this need arises because of the change in the height of the cutting block, due to resurfacing. I, therefore, provide means for varying the relation of the tube to the support. As herein illustrated, this is accomplished by forming the brackets in sections, one section being attached to the support and the other to the tube, and associating with these sections means for securing them together in difierent'relations.

In the accompanying drawing,

Fig: 1 shows in perspective one embodiment of my improved material-holding means associated with a clicking machine;

Fig. 2 is a partial end elevation, particularly illustrating the cutting block of the machine with the'associated holders;

Fig. 3 shows the bed perspective;

Fig. {l is a vertical sectional detail on the line IVIV of Fig.2;

Fig. 5, a separated perspective of the sections of an attaching bracket;

Fig. 6, a horizontal sectional detail through one of the front brackets, with a portion of its connecting bar; and

Fig. 7, a perspective view of the connected clamping sections of the two front brackets.

Considering that for the purpose of illustration this invention is to be applied to a clicking machine, there is shown'at H] the frame of such an apparatus, this carrying'upon its horizontal bed l2 a cutting block M, which may consist of the customary sections encircled by a retaining band l6. The block is secured to the bed by of the machine in broken bolts I8 passing through vertical openings in lugs 20 projecting from said bed. The nuts 22 of the bolts abut against the undersides of the lugs, and draw the upper hooked extremities of the bolts against the band. Arranged to slide vertically through the rear of the frame is a post 24, and

extending from it above the block is the usual pressure-arm 26. This arm is swung horizontally by the operator to locate it in the desired relaas new and desire to secure by of the United States is:

1. The combination with a support for material to be operated upon, of a material-delivering tube and a material-receiving tube situated at opposite sides of the support, each of said tubes having an open end and being generally elliptical in cross- Letters Patent section with the major axis of the ellipse extend-.

in sections, one for attachment to the support and a second for attachment to the tube, and means arranged to secure the sections together in different relations.

3. The combination with a frame, of a support for material to be operated upon, a retaining member by which the support is joined to the frame, 'a material-holder mounted upon the frame, and a bracket by which the holder is carried and which is secured to the frame b the retaining member. J v 4. The combination with a'frame, of a support for material to be operated upon, a, retaining member by which the support is joined to the frame, a matrial holder mounted upon the frame, and a bracket by which the holder is car-' ried and which is secured to the frame by the retaining member, said bracket having means ar-;

ranged to secure the material-holder at different heights.

5. The combination with a frame, of a support for material to be operated upon, a bolt by which the support is joined to the frame, a bracket having a clamping section and a carrier-section, the clamping section being secured in place by the bolt, and a material-holder mounted upon the carrier-section.

6. The combination with a frame, of a support for material to be operated upon, a bolt by which the support is joined to the frame, a bracket having a clamping section and a carrier-section, slot-and-screw connections between the sections of the bracket, the clamping section being secured in place by the bolt, and a material-holder mounted upon the carrier-section. 7. The combination with a support for material to be operated upon, of a holder for the material extending along the support and consisting of sheet-material bent into a tube of generally elliptical cross-section with inner and outer overlapping walls, and means for mounting the holder upon the support with the major axis of the ellipse substantially vertical 'and with the opening between the overlapping walls above the material-supporting surface.

8. The combination with a support for material to be operated upon, of a holder for the material extending along the support and consisting of sheet-material bent into tubular form with inner and outer overlapping walls and open ends, and a bracket attached to the support and provided with spaced vertical portions and a connecting horizontal portion, the holder resting upon the horizontal portion and retained laterally by the vertical portions.

' CAMERON TURNER.

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