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US Patent: 512,159
Wrench
Patentee:
Harry Cooper (exact or similar names) - Toronto, OH

USPTO Classifications:
81/145

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

Assignees:
Harry Cooper - Toronto, OH
Joseph Robertson - Steubenville, OH

Manufacturer:
Not known to have been produced

Witnesses:
W. W. Swartz
H. M. Corwin
H. H. Ficke
L.  W. Perkins

Patent Dates:
Applied: Sep. 06, 1893
Granted: Jan. 02, 1894

Patent Pictures:
Harry Cooper patent January 2, 1894
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Description:
The spring-loaded pawls are spaced differently than the rack teeth, and each pawl has two teeth; the aim being one or the other of the pawls catching a rack tooth for close adjustment.

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