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US Patent: 621,869
Monkey Wrench
Patentee:
John Stynsberg (exact or similar names) - Biwabik, MN

USPTO Classifications:
81/165, 81/177.8

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
D. E. Carlsen
J. E. Carlsen
Swan E. Moran
E. H. Beck

Patent Dates:
Applied: Jun. 03, 1898
Granted: Mar. 28, 1899

Patent Pictures:
John Stynsberg patent March 28, 1899
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Description:
Adjustable jaw open end wrench with means to adjust the handle angle in relation to the jaw opening. The pin holding the angle adjustment is held in place by a spring catch.

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