US Patent: 308,561


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US Patent: 308,561

Wrench

Patentee:

John Houlehan (exact or similar names) - Toledo, OH

USPTO Classifications:

81/156, 81/DIG.4

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

wrenches : wrench adjustment types : screw adjust wrenches

Assignees:

Rathbun Fuller - Toledo, OH

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	May 19, 1884
Granted:	Nov. 25, 1884

Patent Pictures:

John Houlehan patent November 25, 1884

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Description:

The patent is for the combination of screw adjust combined with two spring pawls on the sides of the movable jaw. This allows for screw and quick adjust.

It is an evolution of Houlehan's earlier patents (no. 278,553 and 289,347).