US Patent: 561,274
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| Tongs for Turning Pipes
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Patentee:
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| John McCarthy Palmer (exact or similar names) - Marysville, MT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 21, 1895 |
| Granted: |
Jun. 02, 1896 |
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Patent Pictures:
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John McCarthy Palmer patent June 2, 1896 |
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Stan Schulz
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Description: |
| Size adjustment accomplished by an adjusting nut within a pivoting block. The shank of the movable jaw is threaded.
Corresponding Canadian patent no. CA-52,970 issued July 20, 1896 includes a second patentee.
Ken Cope's "American Wrench Makers 1830-1930" cites an 1897 POWER item that implies Palmer intended to produce this wrench along with those in patent nos. 574,624 and 558,304.
James J. Sheehy - patent attorney |
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