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US Patent: 818,025
Wrench
Patentee:
Edwin A. Hardison (exact or similar names) - Bakersfield, CA

USPTO Classifications:
81/69

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. Townsend
Julia Townsend
James R. Townsend
Jim H. Barkelew

Patent Dates:
Applied: Jun. 19, 1905
Granted: Apr. 17, 1906

Patent Pictures:
Edwin A. Hardison patent April 17, 1906
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Description:
The patent describes a wrench for oil well casing or other pipe, with a strap or chain connected to a gripping shoe, and a lever handle which serves both to tighten the band or chain, and to then turn the pipe.

This is one of two chain wrench patents issued April 17, 1906 and may be a patent connected to the BILLINGS AND SPENCER "Reversible" Chain Pipe Wrench "PAT APR. 17, 1906."

Patent no. 818,371 is the other chain wrench patent from April 17, 1906. It also includes features similar to some aspects of the BILLINGS AND SPENCER wrench.

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