US Patent: 148,748
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| Machine for Stamping and Bending Sheet Metal
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Patentee:
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| George H. Perkins (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 07, 1874 |
| Granted: |
Mar. 17, 1874 |
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Joel Havens
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Description: |
| Howson & son - patent attorneys
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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