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US Patent: 511,736
Attachment forBboring-Mills
Taper Attachment and Feed Mechanism for Vertical Boring Mill
Patentee:
Charles Leon Libby (exact or similar names) - Bridgeport, Fairfield County, CT

USPTO Classifications:
408/237, 409/190, 82/11

Tool Categories:
metalworking machines : drilling and boring : vertical boring mills

Assignees:
Edward P. Bullard - Bridgeport, Fairfield County, CT

Manufacturer:
Bridgeport Machine Tool Works - Bridgeport, Fairfield County, CT
Bullard Machine Tool Co. - Bridgeport, Fairfield County, CT

Witnesses:
M. C. Hinchcliffe
A. J. Tanner

Patent Dates:
Applied: Dec. 05, 1892
Granted: Dec. 26, 1893

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
Vintage Machinery entry for Bullard Machine Tool Co.
Vintage Machinery entry for Bridgeport Machine Tool Works
Description:
Claim:

In a boring mill or machine of like character, the combination with a properly supported crossrail, of uprights arranged upon either end, a taper attachment guide pivotally supported above said crossrail at one end to one of said uprights, while the other is made adjustable so as to be secured to the other of said uprights in an angular position with respect to the cross rail as desired.

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