US Patent: 347,395
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| Lathe Chuck
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Patentee:
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| William L. Sweetland (exact or similar names) - New Haven, New Haven County, CT |
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Patent Dates:
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| Applied: |
Dec. 18, 1885 |
| Granted: |
Aug. 17, 1886 |
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Jeff Joslin
Vintage Machinery entry for Hoggson & Pettis Mfg. Co.
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Description: |
| In 1879 the inventor had been superintendent of the E. Horton & Son Co., a prominent maker of lathe chucks; Sweetland's earlier patent 211,943 was manufactured by them.This chuck design was intended for "holding pulleys or other thin cylindrical work without crushing". Each jaw has a circumferential groove with set-screw for holding the thin walls of those work-pieces. This modification could be incorporated into virtually any chuck design, and without much additional cost. |
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