US227684A - peters - Google Patents

Description

J, H. GEE. Shears for Cutting Metal INO. 227,684. Patented May 18,1880.

Minesks: fnv'enfw? f M 44/ iffy NITED STATES PATENT OFF-ICE. I

JOHN H. GEE, ()F CORTLAND VILLAGE, NEW YORK, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO JAMES H. VAN VALEN, OF SAME PLACE.

SH EARS FOR CUTTING METAL.

SPECIFICATION forming part of Letters Patent No. 227,684, dated May 18,1880. Application filed October 10, 1879.

To all whom it may concern Be it known that I, JOHN H. GEE, of Cortland Village, in the county of Uortland and State of New York, have invented certain new and useful Improvements in Shears or Apparatus for Cutting Metal; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the-art to which it ap- 1o pertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to certain improvements in shears or apparatus for cutting metal;

and it consists in the combination of two compound levers suitably fulcrumed, the forward members of said levers carrying or forming the cutters, and the rear members of said levers forming the handles by which the device is operated, the forward and'rear levers being connected at their contiguous ends and the rear levers with a suitable brace by means of fulcrum-pins for the purpose, as more fully 2 5 hereinafter specified.

It further consists in a supporting-plate secured to the compound levers by means of fulcrum-pins, and a sliding guide and brace, also secured to said levers by means of fulcrumpins, and sliding upon the supporting-plate, the fulcrum-pins passing through longitudinal slots in the said supporting-plates as more fully hereinafter specified.

In the drawings, Figure 1. represents a back 3 5 elevation of my improved cutting device, showing the levers or cutters in a closed position. Fig. 2 represents a similar view, showing the levers or cutters open to receive the metal to be cut. Fig. 3 represents a front elevation of 40 the device; Fig. 4, a front elevation, showing the levers and braces, the supporting-plate and sliding guide being detached; Fig. 5, a-side elevation, and Fig. 6 a longitudinal sectional view taken on a line through the sliding guide 4 5 and plate, of said invention.

The letters A B indicate the members of two compound levers, the forward members, A, be-

in g connected near their forward ends by means of braces G on opposite sides, and the pivotal 5o bolts D passing through said members A. The

by means of bolts or pins F, and the rear memforward ends of said members carry or form the cutters E of the device.

The forward members, A, and rear members, B, are pivoted together attheir contiguous ends bers are provided with bearing-faces G, which work against each other. The said bearingsurfaces start from their pivotal points, forming a portion of a circle, and terminate in a. line tangential to the circle, by means of which they form a stop for limiting the movement of the levers when brought together. The said rear members are connected to each other by means of braces H on opposite sides, similar to the braces O which connect the forward members. In order to render the device more substantial and accurate in its operation, I prefer to combine with it a supporting and guide plate, K, which is provided with two parallel longitudinal slots, L, through which the bolts k,

which secure the rear members together, pass,

and in which they are adapted to travel back and forth during the working of the device, and with two apertures at its forward ends for the passage of the bolts which secure the braces O tothe forward members of the compound lever.

The front brace, H, of the rear members of the compound lever is T form in shape. The longitudinal portion thereof,indicated by h, extends through a guide, N, formed on the supporting and guide plate, whereby the parts are guided and kept in their proper and relative position, insuring accuracy in their mutual operation. 7

The operation of my invention will be evident from the above description without further' explanation Having thus described my invention, what I claim, and desire to secure by Letters Patent, i's

1. A device for cutting metal, consisting of two compound levers, the forward members of which are pivotally connected by means of 5 suitable braces on opposite sides, the rear members being pivotally connected together by similar braces, the respective rear and forward members being pivotally connected together at their contiguous ends, the rear memhers being provided with smooth circular and tangential bearing-surfaces adapted to work in conjunction with each other, substantially as and for the purpose specified.

2. The combination of the compound levers, fulcrumed as described, and the Tshaped sliding guide and brace secured to the front of the supporting-plate, and connected to the rear levers by means of pins, to which the brace connecting said levers is pivoted, substantially as specified.

3. The combination of the compound levers, fulcrumed as described, the supporting-plate secured to the forward levers by means of bolts, and provided with longitudinal slots, through which pass pins, securing said plate to the rear levers, and the T-shaped sliding guide and brace, secured to the rear levers by means of the pins passing through the longitudinal slots in the plate, and to the supporting-plate 20 by means of the guide N, whereby the parts are guided and kept in their proper and relative position, therebyinsuringaccuracy in their mutual operation, substantially as specified.

In testimony that I claim the foregoing as 25 my own I affix a, my signature in presence of two Witnesses.

JOHN H. GEE.

Witnesses GEO. O. HUBBARD, HUGH DUFFEY.

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