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US Patent: 788,388
Pipe Wrench
Benjamin Franklin Woodward - Sarcoxie, MO

USPTO Classifications:
81/106, 81/139

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : quick adjust wrenches

Henry B. Boyd - Sarcoxie, MO
Benjamin Franklin Woodward - Sarcoxie, MO

Bell Wrench Co. - Tulsa, OK

S. Goodner
Clyde R. Wallar

Patent Dates:
Applied: Nov. 19, 1904
Granted: Apr. 25, 1905

Patent Pictures:
Benjamin F. Woodward Pat. April 25, 1905
USPTO pdf tiff
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The wrench is a quick-adjust. The adjusting mechanism is a spring-loaded dog interposed between the fixed and movable jaws. Used in conjunction with William Bell's July 6, 1920 patent (No. 1,345,983) in the Bell Wrench Co. (Tulsa, OK) pipe wrench.

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