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US Patent: 574,513
Wrench
Patentee:
John A. Barker - La Canada, CA

USPTO Classifications:
81/93

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Jas. W. White
Geo. A. Howard, Jr.
Jas. E. Knight
I. Herrington

Patent Dates:
Applied: Mar. 30, 1896
Granted: Jan. 05, 1897

Patent Pictures:
John A. Barker patent January 5, 1897
USPTO pdf tiff
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Description:
Screw adjust, with a rocking movable jaw.

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