CA Patent: CA-57,238
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| Wrench
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Patentees:
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| Logan W. Everhart (exact or similar names) - Chanute, KS |
| Zachery Y. Postlethwaite (exact or similar names) - Chanute, KS |
| Alonzo W. Postlethwaite (exact or similar names) - Chanute, KS |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 17, 1897 |
| Granted: |
Aug. 28, 1897 |
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Patent Pictures:
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Logan W. Everhart et. al. patent August 28, 1897 edited from CANADIAN PATENT OFFICE RECORD |
CIPO Data
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Stan Schulz
Canadian patent no. 57,238 in FLICKR
57,238 in Canadian Patents Database
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Description: |
| Quick adjust; the movable jaw has internal rack teeth and a spring. The rack teeth engage rack teeth on the main shank.
Having the jaws slightly inclined to the shank, the force is directed in line with the teeth of the adjusting rack.
Corresponding U.S. patent no. 609,762 issued August 23, 1898 has Everhart as single patentee, with the others as assignees. |
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