US Patent: 667,852 - Pipe Wrench


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US Patent: 667,852

Pipe Wrench

Patentee:

Fred E. Sands (exact or similar names) - Cambridge, MA

USPTO Classifications:

Tool Categories:

wrenches : pipe wrenches : chain and strap wrenches

Assignees:

William Quinby - Cambridge, MA

Manufacturer:

Not known to have been produced

Witnesses:

Horace Brown

P. W. Pezzetti

E. Batchelder

Patent Dates:
Applied:	Feb. 05, 1900
Granted:	Feb. 12, 1901

Patent Pictures:

Patent 667,875 - edited drawing

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Description:

Structural modification to the wrench in patent no. 627,075 related to using a chain rather than a strap. Sands was listed as a witness for that patent.