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US Patent: 514,993
Wrench
Improved Monkey Wrench
Patentee:
William Houghton - Paris, ON Canada

USPTO Classifications:
81/148

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

Assignees:
None

Manufacturer:
Unknown

Witnesses:
R. Acres
A. Stuart, Jr.
A. M. Bannister
Banfield Capron

Patent Dates:
Applied: May 04, 1893
Granted: Feb. 20, 1894

Patent Pictures: [ 1 | 2 ]
William Houghton patent February 20, 1894
USPTO pdf tiff
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Description:
The striking features of this wrench are the sliding wedge adjustment, and the long tail on the movable jaw. Production pieces are marked only PATD 1894. No advertisement or other documentation is known that would identify the manufacturer.

Parallel Canadian patent CA-45,387 of same date lists assignee as Paris Tool Co. Ltd. Corresponding British patent GB-189403639 was registered Feb. 20, 1894.

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