US Patent: 709,014
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| Drill-chuck
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Patentee:
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| Arthur I. Jacobs (exact or similar names) - Hartford, CT |
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Patent Dates:
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| Applied: |
May 10, 1902 |
| Granted: |
Sep. 16, 1902 |
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Jeff Joslin
Vintage Machinery entry for Jacobs Mfg. Co.
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Description: |
| This patent covers the now-famous Jacobs chuck, still in production over 100 years later."This invention relates to a chuck which has jaws that are movable in recesses inclined to the axis of the body for gripping and releasing the shank of a drill or similar tool. The object of this invention is to construct a strong chuck of this nature with simple, cheap, and convenient means for opening and closing the tool-holding jaws. The body of the chuck that is illustrated as embodying the invention has radial sockets or pins for the reception of the end of a key and rack-teeth on an edge of the nut-sleeve for engagement with gear-teeth on the key, so that when the end of the key is applied to the body and turned the meshing of the gear-teeth and the rack-teeth turn the nut and cause the desired movement of the jaws." |
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