US Patent: 621,525 - Gas or Vapor Engine


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US Patent: 621,525

Gas or Vapor Engine

Patentee:

John H. Hamilton (exact or similar names) - Sandiacre, Derby County, England

USPTO Classifications:

123/348, 123/58.2, 123/76

Tool Categories:

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

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Dec. 28, 1897
Granted:	Mar. 21, 1899

Patent Pictures:

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Description:

Patented in Great Britain, 21 Apr., 1890, #4189.

Claim:

In the ordinary type of gas or vapor engines in which the motor-piston makes one effective stroke in two revolutions when working at full power it is usual to allow some of the products of combustion to remain in the cylinder and mix with the incoming charge.