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US Patent: 1,862,817
Wrench
Patentee:
Joseph Eifel - Chicago, IL

USPTO Classifications:
81/356, 81/360, 81/391

Tool Categories:
wrenches : pliers type wrenches
combination tools

Assignees:
None

Manufacturer:
American Plierench Company - Chicago, IL

Witnesses:
none listed

Patent Dates:
Applied: Dec. 31, 1927
Granted: Jun. 14, 1932

Patent Pictures: [ 1 | 2 | 3 ]
Joseph Eifel patent June 14, 1932
USPTO pdf tiff
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Description:
The pivot point rides in a slot; a spring against the pivot pushes the handle into engagement with the sliding jaw. The sliding jaws are interchangeable; three jaw styles are shown in the drawings. The siding pivot allows the movable jaw and handle to be re-set in relation to each other so the handles are comfortable through a wide range of jaw openings. The gearing feature has sufficient mechanical advantage that these pliers will hold their grip "hands free." The tool includes a wire cutter, and one handle ends in a screwdriver. Some parts in some versions of the tool show the Dec. 31, 1927 date. Eifel produced a 64 page promotion and instructional booklet that accompanied some of these tools. Eifel sold extra jaws, jaw blanks, and auxiliary parts to accompany the tool. Later versions of the tool continued to be produced for several decades.

Eifel's first version of this tool is based on patent no. 1,181,654.

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