US Patent: 652,137
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| Hand-drill
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Patentee:
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| John E. Olson (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 03, 1900 |
| Granted: |
Jun. 19, 1900 |
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George Langford
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Description: |
| "This invention relates to hand-drills, and has for one object to provide a double-acting ratchet-drill of improved construction wherein the reciprocating movement of the hand actuating mechanism is converted into a continuous rotary movement by the double ratchet mechanism, whereby the drill or boring-tool is continuously rotated in the proper direction to effect the drilling or boring operation." |
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