US Patent: 1,245,860
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| Electrically-driven tool
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Patentees:
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| Alonzo Galloway Decker (exact or similar names) - Baltimore, MD |
| Samuel Duncan Black (exact or similar names) - Baltimore, MD |
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Patent Dates:
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| Applied: |
Dec. 04, 1914 |
| Granted: |
Nov. 06, 1917 |
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Patent Pictures:
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Jeff Joslin
Vintage Machinery entry for Black & Decker Mfg. Co., Ltd.
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Description: |
| This important patent marks the beginning of the modern era of the handheld electric drill: it is the first pistol-grip drill with a trigger switch. The primary innovation covered by the patent is to place an on-off trigger switch in the handle of the drill. |
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