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US Patent: 284,162
Wrench
Patentee:
Henry William Atwater - Orange, NJ

USPTO Classifications:
81/139

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

Assignees:
None

Manufacturer:
Henry William Atwater - Newark, NJ
Utility Wrench Co. - New York, NY

Witnesses:
Chas. H. Smith
J. Haile
Geo. T. Pinckney
William G. Mott

Patent Dates:
Applied: May 24, 1883
Granted: Sep. 04, 1883

Patent Pictures: [ 1 | 2 ]
Henry W. Atwater patent September 4, 1883, with Atwater's Tiger -photo courtesy Martin J. Donnelly mjdtools.com
USPTO pdf tiff
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Atwater's TIGER wrench (FLICKR)
Description:
The adjusting mechanism within the movable jaw of this wrench incorporates the wedging action of an eccentric cam. Atwater patented this principle as applied to a sliding jaw clamp on August 13, 1878 (Pat. no. 206,851). In this patent this cam wheel is shifted by a lever, and pushed toward engagement by a spring. The comparable Canadian patent no. is CA-18,046 and the British patent is GB-188302598 registered May 24, 1883.

The UTILITY WRENCH -- also known as Atwater's Tiger Wrench -- bears both patent dates.

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