US Patent: 422,479
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Chuck
Improved scroll chuck for metal lathes
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Patentee:
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| Lucius E. Whiton (exact or similar names) - New London, CT |
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Patent Dates:
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| Applied: |
Jul. 12, 1889 |
| Granted: |
Mar. 04, 1890 |
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Patent Pictures:
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Jeff Joslin
Vintage Machinery entry for D. E. Whiton Machine Co.
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Description: |
| "On September 13, 1887, Letters Patent No. 369,758 were issued to me for certain improvements in that class of chucks having a series of radially movable jaws, one feature of said improvements being a thrust pin or bearing... that was provided to prevent undue endwise play of the screws that operate the said jaws. In manufacturing chucks embodying such thrust-bearings I have found the particular form described in said earlier patent somewhat difficult and expensive to make, although when made and put to service it performs its office satisfactorily. My object in this present invention is to both simplify and cheapen the construction of such thrust-bearings, and at the same time to increase the resisting-surface of such bearings, so that there shall be no possibility of their becoming loosened or displaced by constant and severe use." |
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