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US Patent: 1,897,666
Machine Tool Spindle
Patentee:
Frank O. Hoagland (exact or similar names) - West Hartford, Hartford County, CT

USPTO Classifications:
411/190, 411/938, 74/424.75, 82/147

Tool Categories:
metalworking machines : metalworking machine mechanisms : metalworking power transmission

Assignees:
Pratt & Whitney Co. - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 05, 1930
Granted: Feb. 14, 1933

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pratt, Whitney & Co.

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