US Patent: 422,767 - Improved Sliding-Jaw Wrench


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US Patent: 422,767

Wrench
Improved Sliding-Jaw Wrench

Patentee:

Isaac C. Gray (exact or similar names) - Tippecanoetown, IN

USPTO Classifications:

81/126, 81/136

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

John W. Fesler - Tippecanoetown, IN

Isaac C. Gray - Tippecanoetown, IN

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Dec. 11, 1889
Granted:	Mar. 04, 1890

Patent Pictures:

Isaac C. Gray patent March 4, 1890

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Description:

Rack and pawl adjustment combined with pivot clamping action; the adjustment notches are spaced in 1/4 inch increments. The handle partially or entirely encloses the shank of the "hook jaw" when the wrench is gripping a work piece.