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US Patent: 1,227,183
Jar Wrench
Patentee:
John L. Needham - Chicago, IL

USPTO Classifications:
81/3.44, 81/300

Tool Categories:
wrenches : jar wrenches

Assignees:
Boye Needle Co. - Chicago, IL

Manufacturer:
Boye Needle Co. - Chicago, IL

Witnesses:
Chas. E. Gaylord
Irwin C. Bowman

Patent Dates:
Applied: Sep. 08, 1916
Granted: May 22, 1917

Patent Pictures: [ 1 | 2 ]
John H. Needham Patent May 22, 1917
USPTO pdf tiff
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Description:
As shown in the drawing, this hinged jaw design has three primary bearing surfaces to adapt to a range of jar lid sizes, and molded handles to give a better grip.

The 1916 patent is design patent no. D49,968.

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