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US Patent: 63,689
Improvement in Pipe Wrenches
Patentee:
Robert Bain - Brooklyn, NY

USPTO Classifications:
81/394, D8/52

Tool Categories:
wrenches : pipe wrenches : pipe tongs
wrenches : wrench adjustment types : wedge adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. W. Coombs
A. Le Clerc

Patent Dates:
Granted: Apr. 09, 1867

Patent Pictures:
Robert Bain. Pat. April 9, 1867
USPTO pdf tiff
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Description:
The adjusting feature of this pipe tongs is a movable frame for the pivot point which is secured by a thumb screw and a sliding wedge key.

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