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US Patent: 448,146
Wrench
Patentee:
Adolph Hamelehle - Grand Rapids, MI

USPTO Classifications:
81/141

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
wrenches : wrench components : wrench jaw components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles W. Tufts
Luther C. Moulton
Leonidas G. Woolley
Claude R. Buckaway

Patent Dates:
Applied: Dec. 22, 1890
Granted: Mar. 10, 1891

Patent Pictures:
Joseph F. Hartigan patent March 10, 1891
USPTO pdf tiff
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Description:
A cam lever on the back side of the movable jaw compresses the jaw against a gib that has gripping teeth. Shims can be inserted between the jaw and gib to compensate for wear.

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