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US Patent: 148,748
Machine for Stamping and Bending Sheet Metal
George H. Perkins - Philadelphia, PA

USPTO Classifications:

Tool Categories:
metalworking machines : sheet metal : stamping presses

George H. Perkins - Philadelphia, PA
Joseph Le Conte - New York, NY
Atlantic Refining Co. - Philadelphia, PA

Not known to have been produced

William A. Steel
Harry Smith
Thomas McSwain
John K. Kupertus

Patent Dates:
Applied: Jan. 07, 1874
Granted: Mar. 17, 1874

Patent Pictures:
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I claim as my invention—

1. In a sheet-metal-stamping machine, the combination, substantially as described, of dies for bending the edge of a plate upward with a die" which bends the upturned edge inward, the said dies operating in unison and automatically, in the manner described.

2. The combination of the upper die D, the lower die D', lips m, and plate k3, the whole operating to bend the edge s of the plate Q by their joint action, as set forth.

3. The - combination of the upper die D, lower die D', and spring-bars h and h3.

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