US Patent: 1,109,516
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| Hand-operated drill
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Patentee:
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| James Dalton (exact or similar names) - Roxbury, MA |
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Patent Dates:
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| Applied: |
Sep. 17, 1913 |
| Granted: |
Sep. 01, 1914 |
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Patent Pictures:
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Jeff Joslin
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Description: |
| An ad in the August 1900 Machinery, page 40, shows "J. R. Duff's Hand Driller" which is a standard bit brace with the addition of this patent chain-and-threaded-collar feed mechanism. The manufacturer is Duff Machine Co., Lowell, Mass. A surviving example (see photos), presumably a different model than the one pictured in the ad, quite closely matches the patent drawing.There was a Duff Machine Co., Haverhill, Mass., that made milling machines in the 1950s, but that seems to be a company unrelated to the Lowell company of the same name that was active in the early part of the 20th century. |
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