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US Patent: 344,301
Wrench
Improved Sliding-Jaw Wrench
Patentee:
Arthur J. Barnes (exact or similar names) - Detroit, MI

USPTO Classifications:
81/154

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. L. Potts
Wm. L. January
P. W. Hale
Frank W. Pickell
Patent Dates:
Applied: Jan. 07, 1886
Granted: Jun. 22, 1886

Patent Pictures:
Arthur J. Barnes patent June 22, 1886
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Description:
The sliding piece on the shank adjusts the jaw opening by wedging action.

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