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US Patent: 2,014,541
Pressure regulating valve
Patentee:
Fred W. Wappat - Pittsburgh, PA

USPTO Classifications:
137/116.3, 137/495, 137/506, 137/510, 137/549, 251/335.2, 92/95

Tool Categories:
propulsion and energy : steam apparatus : stationary boilers : steam valves

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 15, 1934
Granted: Sep. 17, 1935

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Fred W. Wappat
Description:
Of interest because the inventor was one of the earliest makers of handheld circular saws.

"This invention relates to pressure regulating valves, and is designed particularly for use in connection with hot water heating systems, in which it is necessary to control the pressure supplied from the main to the boiler, and also the pressure generated in the system due to the heating of the water."

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