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US Patent: 1,064,036
Chain Wrench
Patentee:
Arthur J. Whitfield (exact or similar names) - Boston, MA

USPTO Classifications:
81/68

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

Assignees:
Trimont Manufacturing Company - Roxbury, MA

Manufacturer:
Not known to have been produced

Witnesses:
Thomas J. Drummond
Charles C. Ely
Warren O'Neil
William T. H. Salter

Patent Dates:
Applied: Sep. 05, 1912
Granted: Jun. 10, 1913

Patent Pictures:
Arthur J. Whitfield patent June 10, 1913
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Description:
The fixed end of the chain is attached to the bar by an off-center swivel whereby the effective length of the chain and gripping points of the links are altered depending on the size of the pipe to be grasped.

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