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US Patent: 643,632
Wrench
Patentee:
Alfred J. Cooper (exact or similar names) - Duryea, PA

USPTO Classifications:
81/100, 81/129.5, 81/DIG.6

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. M. Fowler, Jr.
Thomas Durant
Joseph G. Marcy
Frank C. Mosier
Patent Dates:
Applied: Dec. 13, 1899
Granted: Feb. 20, 1900

Patent Pictures:
Alfred J. Cooper patent February 20, 1900
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Description:
The movable jaw slides in the handle frame. The frame has a holding tooth; the jaw has rack teeth and a coil spring.

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