US Patent: 335,982
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| Lathe-chucks
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Patentee:
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| John H. Westcott (exact or similar names) - Oneida, Madison County, NY |
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Patent Dates:
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| Applied: |
Dec. 04, 1885 |
| Granted: |
Feb. 09, 1886 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Westcott Chuck Co.
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Description: |
| Duell, Laass & Hey - patent attorneys
Experience has proven that the majority of lathe chucks which have the jaw guiding grooves extending completely across them are so weakened by said grooves as to render them liable to spread and lose their requisite firm hold on the jaws when the tool or other object held by the jaws is subjected to the operation of cutting or abrading. The object of my present invention is to obviate the aforesaid defect; and to that end my invention consists in the application to the chuck-head of extra stays for sustaining the jaws independently of their adjusting devices, and also in a novel construction and combination with the chuck-head of a tie-plate extending across the jaw-guiding grooves of the chuck-head, and provided at opposite sides of said grooves with shoulders engaging corresponding shoulders on the chuck-head; and it furthermore consists in a novel combination of the aforesaid stays and tie-plate with the chuck-head.
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