US Patent: 255,039 - Lathe-chuck


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US Patent: 255,039

Lathe-chuck

Patentee:

James N. Skinner (exact or similar names) - New Britain, Hartford County, CT

USPTO Classifications:

279/113

Tool Categories:

metalworking machines : metal lathes : metal lathe chucks

Assignees:

None

Manufacturer:

Skinner Chuck Co. - New Britain, Hartford County, CT

Witnesses:

Theodore G. Ellis

Wilmot Horton

Patent Dates:
Applied:	Nov. 25, 1881
Granted:	Mar. 14, 1882

Patent Pictures:

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"Vintage Machinery" entry for Skinner Chuck Co.

Description:

Theodore G. Ellis - patent attorney

The object of my present invention is to provide a better method of shifting the ring which raises the rack for uniting the pinions oil the jaw-screws, and for holding it in place, when the rack is engaged with the jaws for making the chuck universal.