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US Patent: 628,218
Wrench
Patentees:
Robert Ashworth (exact or similar names) - New Haven, CT
Albert W. Ashworth (exact or similar names) - New Haven, CT

USPTO Classifications:
81/129, 81/90.9, 81/95

Tool Categories:
wrenches : pipe wrenches

Assignees:
L. T. Snow - New Haven, CT

Manufacturer:
Not known to have been produced

Witnesses:
L. D. Heinrichs
A. B. Degges
E. E. Masson
Patent Dates:
Applied: Oct. 14, 1898
Granted: Jul. 04, 1899

Patent Pictures:
Robert Ashword and Albert W. Ashworth patent July 4, 1899
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Description:
Facing jaws on adjacent pivot points are moved together or apart as the handle is shifted. The pivot pins are threaded bolts so the jaws can be re-positioned to change the size range.

The wrench received Canadian patent no. CA-62,580 on Feb. 7, 1899.

The design resembles the Ashworth's contemporary patent (no. 627,466).

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