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US Patent: 552,795
Wrench
Improvements in Monkey Wrenches
Patentee:
Frederic Pemberton Thompson - Fredericton, NB Canada

USPTO Classifications:
81/152

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Jos. L. Coombs
F. L. Ourand
R. W. McLellan
W. M. Kare

Patent Dates:
Applied: Apr. 22, 1895
Granted: Jan. 07, 1896

Patent Pictures:
Frederic Pemberton Thompson patent January 7, 1896
USPTO pdf tiff
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Description:
A diagonal link in the movable jaw binds on the main shank to hold the adjustment. The link is optionally positioned by a screw adjustment or compression spring.

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