US Patent: 2,709,928 - Variable Speed Transmission


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US Patent: 2,709,928

Variable Speed Transmission

Patentee:

Gordon H. Jones (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI

USPTO Classifications:

192/12D, 192/21.5, 475/154, 475/279

Tool Categories:

metalworking machines : metalworking machine mechanisms : metalworking power transmission

metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms

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:	Jan. 31, 1951
Granted:	Jun. 07, 1955

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:

The present invention relates to speed change transmissions and more particularly to transmissions of the constant mesh planetary gearing type wherein various combinations of constant mesh gears are selectively rendered operative to produce various forward speed ratio drives through the transmission. By "forward speed ratio drive" is meant a drive through the transmission from the driving or input shaft to the driven or output shaft wherein the latter shaft is rotated in the same direction as the former shaft, as distinguished from reverse speed ratio drive wherein the output shaft is driven in a direction opposite to the direction of rotation of the input shaft.