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US Patent: 251,305
Lathe-Chuck
Patentee:
Dwight Slate (exact or similar names) - Hartford, Hartford County, CT

USPTO Classifications:
279/113

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories and attachments

Assignees:
E. Horton & Son Co. - Windsor Locks, Hartford County, CT

Manufacturer:
Not known to have been produced

Witnesses:
W. Marsh
Charles L. Burdett

Patent Dates:
Applied: Aug. 13, 1881
Granted: Dec. 20, 1881

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for E. Horton & Son Co.
Description:
W. E. Simonds, patent attorney

My improvement relates to that class of combination-chucks:

i.e., those which may be changed from universal to independent, and vice versa, which have an annular gear for engaging with pinions on the various screws which operate the jaws and a loose ring back of the annular gear for use in meshing and unmeshing the annular gear from such pinions. The improvement is a device different from those which have preceded it for causing the meshing and unmeshing of said annular gear and said pinions.

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