US Patent: 137,053
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Dies for Forming Wrench-Heads
Improvements in the Manufacture of 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 Pat. March 25, 1873 |
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Stan Schulz
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Description: |
| "My invention consists in dies and process for forming a wrench-head upon a bar of the width and thickness of the wrench-bar." Patent no. 137,052 is a complement.
These patented processes were undoubtedly used in producing Collins Co. wrenches. |
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