US Patent: 529,401
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| Spiral screw driver and drill
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Patentees:
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| William H. McCoy (exact or similar names) - Millers Falls, MA |
| Henry Pratt (exact or similar names) - Brooklyn, NY |
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Patent Dates:
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| Applied: |
Feb. 21, 1894 |
| Granted: |
Nov. 20, 1894 |
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Patent Pictures:
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1 | 2 | 3
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Steve Gosselin
"Vintage Machinery" entry for Millers Falls Co.
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Description: |
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Per an 1894 Millers Falls catalog(reprint) it was sold as either a No. 11 which included 3 screwdriver bits, or a No. 12 which had the 3 screwdriver bits and 8 drill points along with an adapter to allow the drill points to fit the larger screwdriver slot. |
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