US Patent: 1,862,817
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| Wrench
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Patentee:
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| Joseph Eifel (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Dec. 31, 1927 |
| Granted: |
Jun. 14, 1932 |
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Patent Pictures:
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Joseph Eifel patent June 14, 1932 |
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Stan Schulz
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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 sold extra jaws, jaw blanks, and auxiliary parts to accompany the tool. One ad noted parts were standardized so that parts made after 1932 would fit any tool made after 1932.
Later versions of the tool continued to be produced for several decades.
Eifel's earliest versions of this tool were based on patent no. 1,181,654.
Eifel produced successive editions of a 64 page promotion and instructional booklet that accompanied some of these tools; the earliest is dated 1922. |
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