US Patent: 203,261
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| Pipe-Wrench
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Patentee:
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| Lawrence Glynn (exact or similar names) - Cambridgeport, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 25, 1878 |
| Granted: |
May 07, 1878 |
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Patent Pictures:
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Lawrence Glynn patent May 7, 1878 |
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Stan Schulz
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Description: |
| The adjustable jaw passes through a frame. The slot in which the egg-shaped adjusting ring sits is "butterfly-shaped" to allow for the slight jaw movement necessary for pipe wrenches. The spring works to release the grip. |
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