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US Patent: 2,878,702
Slidable Outer Jaw Wrench
Patentee:
Anders Gustav Anderson - Chicago, IL

USPTO Classifications:
81/145

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

Assignees:
None

Manufacturer:
Anderson Tool Mfg. Company - Chicago, IL

Witnesses:
none listed

Patent Dates:
Applied: Apr. 19, 1957
Granted: Mar. 24, 1959

Patent Pictures:
Anders G. Anderson patent March 24, 1959
USPTO pdf tiff
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Description:
A spring-tensioned latch holds the jaw adjustment. The design addresses one-handed adjustment without danger of pinching fingers, jaw in-line with the handle, and overall "firm" construction. Known example marked "ANDERSON TOOL COMPANY" and the patent number.

U.S. patents 789,307, 1,026,005, 1,380,794, 1,391,581, 1,396,576, 2,703,503, and 2,760,396 and British patents GB-133,760 and GB-135,405 are cited as references.

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