US Patent: 1,162,197
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| Chuck
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Patentee:
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| Verner J. Wahlstrom (exact or similar names) - Brooklyn, NY |
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Patent Dates:
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| Applied: |
Dec. 22, 1914 |
| Granted: |
Nov. 30, 1915 |
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Jeff Joslin
Vintage Machinery entry for Wahlstrom Tool Co.
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Description: |
| Wahlstrom drill chucks have been in continuous production for more than a century, and the name is sometimes used as a synonym for a keyless chuck. An example has been seen marked, "Wahlstrom Tool Co. / Brooklyn, N.Y. / Pat. May 14.1912 / Nov 30.1915". The first patent date corresponds to patent 1,026,187. |
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