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US Patent: 722,483
Wrench
Patentee:
John A. Boyd (exact or similar names) - Webster, PA

USPTO Classifications:
81/143

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. A. Lohman
G. M. Mitchell
D. E. Wilson
E. E. Potter
Patent Dates:
Applied: Dec. 09, 1902
Granted: Mar. 10, 1903

Patent Pictures:
John A. Boyd Pat. March 10, 1903
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Description:
An eccentric cam within the locking rack inside the movable jaw raises raises the rack, allowing the jaw to be slid in or out for adjustment.

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