US Patent: 640,394 - Gas Engine


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US Patent: 640,394

Gas Engine

Patentee:

George W. Lewis (exact or similar names) - Philadelphia, PA

USPTO Classifications:

123/188.2, 123/346, 123/41.67, 123/47R, 123/58.1, 123/65VB, 123/65VC, 123/73AB, 123/87, 261/DIG.25

Tool Categories:

propulsion and energy : internal combustion engines : gas and gasoline engines

Assignees:

J. Thompson & Sons Mfg. Co. - Beloit, Rock County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Jun. 21, 1899
Granted:	Jan. 02, 1900

Patent Pictures:

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Description:

Original application filed 08 Nov., 1894. Renewed 22 Sept., 1898. Divided and this application filed 21 Jun. 1899.

Claim:

The combination with an engine cylinder, an admission-valve provided with a spring acting to hold the same closed, and a governor which variably controls the opening of said valve, of a supplemental air-passage opening into the cylinder and provided with an inwardly opening check-valve which is held closed by a spring having a greater tenSion than the spring of the inlet-valve.