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US Patent: 1,734,734
Wrench
Patentee:
Gottfirid C. Lawson - Cleveland, OH

USPTO Classifications:
81/101, 81/DIG6

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Dec. 10, 1926
Granted: Nov. 05, 1929

Patent Pictures:
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Description:
The basic wrench is the same as Lawson's earlier patent (no. 1,362,014). The focus of this patent is the shape and placement of a tensioning spring to hold the jaw in a "neutral" position. The patent is not "claimed" on any known Lawson pipe wrench.

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