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US Patent: 295,093
Pressure-gage-testing apparatus
Patentee:
Charles E. Ashcroft - Lynn, MA

USPTO Classifications:
73/1.65

Tool Categories:
propulsion and energy : steam apparatus : stationary boilers : steam pressure gauges

Assignees:
None

Manufacturer:
Crosby Steam Gage & Valve Co. - Boston, MA

Witnesses:
William Edson
Helen M. Feegan

Patent Dates:
Applied: Aug. 31, 1883
Granted: Mar. 11, 1884

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
owwm.org discussion and photos of this apparatus
"Vintage Machinery" entry for Crosby Steam Gage & Valve Co.

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