US Patent: 4,972 - Apparatus for gaging the height of water in boilers


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US Patent: 4,972

Apparatus for gaging the height of water in boilers

Patentees:

Henry R. Worthington (exact or similar names) - New York, NY

William H. Baker (exact or similar names) - Brooklyn, NY

USPTO Classifications:

73/290R

Tool Categories:

propulsion and energy : steam apparatus

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Asa Worthington

J. W. Carrington

Patent Dates:
Granted:	Feb. 20, 1847

Patent Pictures:

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Description:

"...we employ a 'percussion gage,' the principle upon which its action is dependent being that of the percussive action of a flat surface acting horizontally upon a port of the water, the height of which is to be gages... The form of apparatus that we have used, and which has answered the purpose perfectly well, consists of a cylinder furnished with a loosely fitting piston, that may be suddenly brought down within said cylinder without any sensible resistance from friction or steam..."