US Patent: 588,879
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| Tool
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Patentee:
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| John M. Rauhoff (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Mar. 02, 1896 |
| Granted: |
Aug. 24, 1897 |
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Patent Pictures:
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Steve Gosselin
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Description: |
| This is a more refined version of 575,734 with a bobbin rather than the cylindrical monster of the former. The patent specification describes this invention applying the principle of the worm-screw claimed in patent 560,281 "to the construction of various kinds of tools—as, for instance, screw-drivers, augers, drills, and other tools which are intended to be operated by rotary movement". |
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