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US Patent: 88,623
Wrench
Improvement in Wrench
Patentee:
George P. Ganster - New York, NY

USPTO Classifications:
81/173, 81/177.1

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. S. Fahnestock
Edm. F. Brown

Patent Dates:
Granted: Apr. 06, 1869

Patent Pictures:
George P. Ganster Pat. April 6, 1869
USPTO pdf tiff
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Description:
The handle has flanges which ride in slots in the lower "fixed" jaw; the shank of the adjustable jaw has left-hand threads turned by threads inside the hollow handle. Two alternate modes of limiting jaw travel are described.

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