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US Patent: 1,401,956
Wrench
Patentee:
William Le Roy Bonnell - Chickasha, OK

USPTO Classifications:
411/999, 81/169

Tool Categories:
wrenches : pipe and nut combination wrenches
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
George C. Myers

Patent Dates:
Applied: Mar. 17, 1921
Granted: Jan. 03, 1922

Patent Pictures: [ 1 | 2 ]
William Le Roy Bonnell patent January 3, 1922
USPTO pdf tiff
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Description:
The specifications note the combination of lever and screw for adjusting means. The adjusting screw is fitted tightly in the handle, and the wrench overall lengthens as the jaw opening increases.

Produced as the BONNELL SURE GRIP.

Similar in appearance and operation to the October 26, 1909 Daniel W. Shaffer patent (no. 937,966).

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