US Patent: 2,811,053 - Pre Select Hydraulic Shifting Means


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US Patent: 2,811,053

Pre Select Hydraulic Shifting Means

Patentee:

John H. McKewen (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:

408/130, 408/234, 74/334

Tool Categories:

metalworking machines : metalworking machine mechanisms : hydraulic apparatus

Assignees:

Giddings & Lewis Machine Tool Co. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 08, 1955
Granted:	Oct. 29, 1957

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.

Description:

Claim:

This invention relates to power transmission mechanism for machine tools and in particular to hydraulic shifting means whereby the desired gear train may be pre-selected and the shifting of the machine gearing initiated while the machine is running.