US Patent: 2,357,952 - Fluid Operated Gear Shifting Mechanism


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US Patent: 2,357,952

Fluid Operated Gear Shifting Mechanism

Patentee:

William G. Hoelscher (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:

74/334, 74/346, 74/745, 82/143

Tool Categories:

metalworking machines : metalworking machine mechanisms : metalworking machine gearing : metalworking speed changing mechanisms

metalworking machines : metalworking machine mechanisms : hydraulic apparatus

Assignees:

American Tool Works Co. - Cincinnati, Hamilton County, OH

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 22, 1942
Granted:	Sep. 12, 1944

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for American Tool Works Co.

Description:

Original application 18 July 18, 1940. Divided and this application 22 August, 1942.

Claim:

This invention relates to fluid operated gear shifting or speed changing mechanism. More particularly, it is directed to a system or circuit arrangement wherein the operations of preselection and shifting are coordinated with the operating means for the clutch which controls the power connection to the transmission.