US Patent: 137,052
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Dies for Forming Wrench-Heads
Improvement in Dies for Forming Wrench-Heads
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Patentee:
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| Luke Chapman (exact or similar names) - Collinsville, CT |
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Patent Dates:
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| Granted: |
Mar. 25, 1873 |
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Patent Pictures:
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Luke Chapman Wrench Head Dies (Pat. Mar. 25, 1873) |
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Stan Schulz
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Description: |
| The patent is for a set of dies to form heads on monkey wrench bars by upsetting. "My invention consists in dies and process for forming a wrench-head upon a bar of the width and thickness of the wrench-bar, requiring only unskilled labor and at a great reduction of cost." Pat. no. 137,053 is a complement. |
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