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US Patent: 364,749
Adjustable Wrench
Adjustable Alligator Wrench
Patentee:
Edward S. Boynton - New York, NY

USPTO Classifications:
81/116, 81/118

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

Assignees:
None

Manufacturer:
Campbell Printing Press and Mfg. Co. - New York, NY

Witnesses:
Jenny Turner
Francis P. Reilly
H. H. McGay
John T. Murphy

Patent Dates:
Applied: Oct. 01, 1886
Granted: Jun. 14, 1887

Patent Pictures: [ 1 | 2 ]
Edward S. Boynton Pat. June 14, 1887
USPTO pdf tiff
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Description:
The advantages claimed include a thin jaw cross-section. The wrench has one fixed and one movable jaw. The jaws pivot between a pair of dished side plates. Several adjustment options are shown or described in the specifications. The option appearing in the manufactured form is the nut with a tapered face on a bolt extending out from the pivot. Some manufactured wrenches incorporate improvements patented June 4, 1889 (pat. no. 404,770).

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