US Patent: 871,436
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| Pipe Wrench
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Patentee:
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| Roy Parmelee (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Sep. 21, 1905 |
| Granted: |
Nov. 19, 1907 |
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Patent Pictures:
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1 | 2
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Roy Parmelee patent November 19, 1907 |
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Stan Schulz
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Description: |
| The fourth patent for the PARMELEE GIRTH GRIP non-marring pipe wrench. The patent is an improvement on pat. no. 648,706, with a focus on the means of latching the girth to the handle. The sliding latch is advanced or retracted by a rotating collar with a slot or abutment that is a segment of a spiral.
In the production wrench citing this patent, the slide advancing mechanism is a nut threaded on the outside of the handle shaft.
The Parmelee Wrench Company was a "closed corporation" incorporated by the family in 1905. WALWORTH took over production some time in 1914. Parmelee wrench production has at times operated as a separate company and at times as a division of a larger firm; Parmelee wrenches are still in production early in the 21st Century. |
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