US57261A - Improved machine for making sheet-metal pans - Google Patents

Description

UNITED STATES PATENT OEEICE.

M. S. SAGER, OF WASHINGTON, OHIO, ASSIGNOB TO S. B. YEOMAN, OF

SAME PLAGE.

iMPROVED MACHINE FOR MAKING SHEET-METAL PANS.

Specication forming part of Letters Patent No. 57,261, dated August 14, 1866.

To all whom it may concern Be it known that l, M. S. SAGER, 0i' Washington, in the county of Fayette and State of Ohio, have invented a new and Improved Machine for Making Sheet-Metal Pans; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

rllhe present invention relates to a machine to be used for the manufacture of sheet-iron or other sheet-metal pans which are to have stra-ight sides and a square or other polygonal shape; and it consists in a novel arrangement of parts whereby such portions of the sheet metal from which the pan is to be manufactured as are to constitute the several sides thereof' can be so bent upward as to form the sides, and their several corners or joints then iirmly united or held together, the sheet metal, while being bent as above stated, being iirmly or securely held upon the bed-plate of the machine.

In accompanying plate of drawings my improved machine embraced by the present invention is illustrated, Figure l being an elevation ofthe rear side of the machine; Fig. 2, a horizontal section taken in the plane of the line y y, Fig. l Fig. 3,a similar section to Fig. 2, but taken in the plane of the line w x, Fig. l, showing ahpan in the machine, partially completed.

Similar letters of reference indicate like parts.

A in the drawings represents the frame of the machine; B, the bed-plate, or piece of the machine on which the sheet of metal eut to the proper size and shape is placed to be bent or made into a pan, this bed-plate having extension-arms `c c from its rear side, with a screw-bolt, D, through their outer ends, for fastening the frame of the machine to a bench or table or other suitable place. l

The bed-plate B, shown in the drawings, is, in the present instance, adapted for the manufacture of square-shaped pans, and it has two edges, E E, of .equal length, forming a right angle with each other, with the apex F toward The ends J of each of the plates H, toward i or continuous with each other, are made angular and beveled, so that when both are swung up into a vertical position, or at right angles to the bed-plate B, they will form a perfeet joint with each other.

To the angular ends of each of the leverplates H is hinged a similar smaller lever-plate, K, made with a suitable handle, L, for operating it.

M is a mold-block secured to the under side of the longitudinal cross-bar N ofthe vertical frame O, moving in ways of the parallel vertical arms I? at each end of the frame A, the lower ends of which arms are connected by a rod, Q, to the center of which it is intended to hang a stirrup for lowering the frame and bringing its mold-block down upon the bedplate B, the frame, when the pressure is removed by which it is drawn down and held upon the bed-plate, being raised therefrom by the action of the bent spring R, suitably connected with it therefor. The periphery of the mold-block M corresponds to the interior shape which is to be given to the sides of the pan, and its two edges or sides, S, are at a right angle to each other, with the apex toward the front of the machine and in aline with the apex of the bed-plate sides E, the sides of the mold-block corresponding to said bed-plate sides both in direction and length.

Having thus described the construction and arrangement of the several parts composing my improved machine, I will now explain the manner in which the same is used.

The sheet metal of which the pan is to be made is :first cut out of the proper shape and size, with each of its corners slit or cut diagonally for a short distance, corresponding in length to the height to which the four edges of the pan are to be bent upward to form its sides, so that when so bent a more perfect corner` edge, or joint to theseveral sides will be made. This plate I then lay upon the bed-plate B of the machine, with two of its sides extending in the direction of the length ofthe sides of the bed, havingthe lever-plates hinged toV them, as explained, over which sides they are projected, but in lines parallel therewith, a distance equal to the width of that portion of the sheet metal that is to constitute the sides of the pan, when the mold-block M is brought down and upon the metallic sheet with sufficient pressure and Jforce to tightly hold it upon the bed-plate. The lever-plates or benders H are then both swung upward, either together or one after another, acting against the projecting' portions ot the inet-alsheet from the mold-block and bed-plate and bending them upward and against the sides of the mold-block into a direction or form corresponding thereto.

' One ofthe benders H is then allowed to fall, the

smaller or end bender or lever-plate, K, otl the other bender H swinging around in ahorizontal plane against the projecting corner-piece, (shown at U in Fig. 3,) bending it down and against so as to lie close upon the other exposed side of the metal sheet about the mold-block, as plainly shown in Fig. 3, when the bender H is allowed to fall and the downward pressure upon the mold-block released, leaving it free to rise by the Iaction of the spring R, connected with its frame, as before explained. The sheet metal, thus having had two of its sides bent upward, is then removed from the bed-plate and again placed in proper position thereon for its remaining sides to be similarly bent; and as it is accomplished in the same manner as for its rst two sides, as above explained, it is not necessary to again describe it, the plate, when removed from the machine then necessary, havingthe perfect form and shape of a pan, as isobvious.

' Although l have herein described the moldblock of the machine, as Well as its bed-plate,

as of a form suitable for the manufacture of a square-shaped pan from a sheet of metal, it is plain to be seen that with but a slight alteration-as, for instance, in the direction in which the sides extend--a pan ot' a triangular, octagonal, or other polygonal shape, having straight sides, can be manufactured as well, the machine in every ease being used in a substautially similar manner to that hereinbefore explained.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination of the sliding mold-block M and stationary bed-plate B, having leverarms or benders H, hinged to the sides, and secondary' benders or lever-arms K, hinged to the benders H, for the purpose of bending or laying over the projecting corner-pieces ofthe v metal sheet, arranged and operated substantially as described.

M. S. SAGER. Y

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