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US Patent: 868,954
Wrench
Self-Adjusting Gripping Jaw for Pipe Wrenches
Patentee:
William H. Whittemore - East Orange, NJ

USPTO Classifications:
81/95

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
Strieby and Foote Co. - Newark, NJ

Manufacturer:
Strieby and Foote Co. - Newark, NJ

Witnesses:
F. H.W. Fraentzel
Geo. D. Richards
Fredk. C. Fraentzel

Patent Dates:
Applied: Oct. 15, 1904
Granted: Oct. 22, 1907

Patent Pictures: [ 1 | 2 ]
William H. Whittemore Pat. Oct. 22, 1907
USPTO pdf tiff
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Description:
The outside of the movable jaw is an increasing spiral. Marketed as the TOTEM pipe wrench, with the spiral cam on only one side of the shank.

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