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US Patent: 444,777
Pivoted Jaw Wrench
Patentee:
Clarence V. Greenamyer (exact or similar names) - San Francisco, CA

USPTO Classifications:
81/100

Tool Categories:
wrenches : pipe wrenches

Assignees:
Verner Wrench Car Mover & Power Manufacturing Co. - San Francisco, CA

Manufacturer:
Not known to have been produced

Witnesses:
I. M. Kalb
Wm. Mayer
H. J. Lang
Edward E. Osborn

Patent Dates:
Applied: Aug. 07, 1890
Granted: Jan. 13, 1891

Patent Pictures:
Clarence V. Greenamyer patent January 13, 1891
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Description:
Improvement on pat. no. 329,642, introducing an adjustable pivot point for the hook jaw. As shown in the drawings, the relationship between the hook jaw and double cam-faced head on the main shank allow tightening and loosening action without removing or re-setting the wrench.

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