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Publication numberUS252958 A
Publication typeGrant
Publication dateJan 31, 1882
Filing dateSep 30, 1881
Publication numberUS 252958 A, US 252958A, US-A-252958, US252958 A, US252958A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Attachment to steam boilers
US 252958 A
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Description  (OCR text may contain errors)

(No Model.) T


ATTACHMENT T0 STEAM BOILERS. v No. 252,958. Patented Janfil, 1882.



SPECIFICATION forming part of Letters Patent No. 252,958, dated January 31, 1882.

Application filed September 30, 1881. (No model.)

To all whom it may concern:

Be it known that I, PATRICK I MCDON- NELL, a citizen of the United States, residing at Olarksburg, in the county of Harrison and State of West Virginia, have invented certain new and useful Improvements in Attachments to Steam-Boilers, of which the following is a specification, reference being bad therein to the accompanying drawings.

My invention consists of certain improvementsinattachmentsto steam-boilers,the chief object being to prevent the escape of steam in case of accident, as the knocking off of the steam-whistle or a stop-cock, the lever that works the throttle-valve, or other similar accident, all of which will be fully understood by the following description.

In the accompanying drawings, Figure 1 is a section showing my device for preventing the escape of steam in connection with a steamwhistle. Fig. 2 is a view of the same, showing my valve closed.

In the application of my improvements to steam-boilers different devices may be em ployed, according to circumstances.

The chief idea of my invention is best represented in Fig. 1, in which A represents a part or a boiler, and B represents the cap of a steam-whistle. 0n theinside of the boiler, op-

.posite the steam-whistle, is a casting, (J, haw

ing a valve, D, attached thereto, said valve being provided with a coiled spring, E, and a standard-spring, F, both acting together to close the valvein case of accident to the steamwhistle. By means of a rod, Gr, the Whistlecap B, when screwed ho'ne, pushes open the valve D, and holds the same permanently in that position.

My improvements may be applied to all the different cocks or valves of a steam-engine, or in any simiiar way in connection with steam apparatus.

-- Having described my invention, I claim- As an improvement in steam-boilers, the valve D, provided with one or more springs for closing the same, and being held peimanently open by means of rod G, which is liable to be released in case of accident, substantially as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2492271 *Oct 11, 1946Dec 27, 1949Aeroquip CorpFlapper valve
US4336818 *Jan 2, 1981Jun 29, 1982Dauvergne Hector AShock activated shut-off valve
US5183087 *Jun 10, 1991Feb 2, 1993Borg-Warner Automotive Electronic & Mechanical Systems CorporationWithin the fuel system of a motor vehicle
US7152638Mar 4, 2002Dec 26, 2006Inergy Automotive Systems Research (Societe Anonyme)Safety system for a liquid fuel tank
Cooperative ClassificationF16K17/36