US Patent: 388,927 - Anti Friction Adjustable Bearing for Lathe Spindles


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US Patent: 388,927

Anti Friction Adjustable Bearing for Lathe Spindles

Patentee:

John Stark (exact or similar names) - Waltham, Middlesex County, MA

USPTO Classifications:

384/616, 82/147

Tool Categories:

metalworking machines : metal lathes

metalworking machines : metalworking machine mechanisms : metalworking machine bearings

Assignees:

None

Manufacturer:

Stark Tool Co. - Waltham, MA

Witnesses:

Unknown

Patent Dates:
Applied:	Jun. 13, 1888
Granted:	Sep. 04, 1888

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Steve Gosselin
"Vintage Machinery" entry for The Stark Tool Co.

Description:

This patent relates to the introduction of a ball-bearing race to absorb spindle end thrust when drilling from the tailstock and the heating of the lathe spindle and its front bearing.