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US Patent: 832,575
Monkey Wrench
Quick-Action Monkey Wrench
Patentee:
Alphage L. Gagnon - Springfield, MA

USPTO Classifications:
81/146, 81/147

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

Assignees:
None

Manufacturer:
Boston Wrench Co. - Boston, MA

Witnesses:
Albert J. Storms
William S. Bellows

Patent Dates:
Applied: Mar. 09, 1906
Granted: Oct. 02, 1906

Patent Pictures: [ 1 | 2 ]
Alphage L. Gagnon Pat. Oct. 2, 1906
USPTO pdf tiff
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Description:
A spring-loaded quick-adjust nut wrench in which the moveable jaw locks to the main shank when it engages a nut or bolt. The wrench citing this patent has an additonal sliding wedge on the back of the main shank to hold the adjustment.

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