Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 200,119
Improvement in Safety-Valves
Patentee:
Henry G. Ashton (exact or similar names) - Somerville, MA

USPTO Classifications:
137/472, 137/542

Tool Categories:
propulsion and energy : steam apparatus : steam safety valves

Assignees:
Ashton Valve Co. - Hartford, CT

Manufacturer:
Ashton Valve Co. - Boston, MA

Witnesses:
William Howell Reed
J. E. Maynadier

Patent Dates:
Applied: Dec. 04, 1877
Granted: Feb. 12, 1878

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Ashton Valve Co.
Description:
This patent covers the "Ashton Pop-Valve". An 1890 lawsuit, Ashton Valve Co. v. Coale Muffler & Safety Valve Co., involved this patent as well as patent 299,503. From the Patent Office report this patent is "for an improvement in safety valves, consisting substantially of an ordinary spring valve with a pop-valve chamber added, in combination with a valve-seat, an inclosed spring chamber, and an inclosed discharge chamber. In his specifications he states that his combination was very important 'in all cases where the steam is prevented in any way from escaping freely from the hood or casing, as is often the case.' In another place he states that he provides holes or vents in the spring chamber for the escape of such steams as may enter it, but these vents are not mentioned in the claims, which cover merely the above combination, 'arranged to operate as described.' Held, that the patent did not cover the use of the vent holes. 50 Fed. Rep. 100, affirmed."

Copyright © 2002-2024 - DATAMP