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Publication numberUS302991 A
Publication typeGrant
Publication dateAug 5, 1884
Filing dateJun 17, 1881
Publication numberUS 302991 A, US 302991A, US-A-302991, US302991 A, US302991A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Automatic sprinkler or fire-extinguisher
US 302991 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)

, v W. B. FOWLER.


Patented Aug. 5, 1884.

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' UNITED STATES harass @rrrcs,



SPECIFICATION forming part of Letters Patent No. 302,991, dated August 5, 1884.

Application filed June 17, 1884. No model.)

To all whom zit may concern.-

Be it known that I, WALTER BAKER Fow- LER, of Lawrence, in the county of Essex, of the Commonwealth of Massachusetts, have invented a new and useful Improvement in Automatic Sprinklers or Fire-Extinguishers; and I do hereby declare the same to .be described in the following specification, and represented in the accompanying drawings, of which Figure 1 is a side elevation, Figs. 2 and 3 opposite edge views, and Fig. 4 a longitudinal section, of a sprinkler containing my invention, the nature of which is defined in the claims hereinafter presented.

The apparatus is foruse in extinguishing a fire that may take place within a structure or room of a building, and is to be placed in the upper part of the said room or structure, and adapted to a pipe or conduit for carrying water under pressure into the chamber of the said apparatus.

In the drawings, A denotes the body of the sprinkler, it being screw-threaded at its upper end, as shown at a. Within the body is a chamber, 1;, which at its lower end opens into a cylindrical space, 0, of larger diameter, open at bottom, and having a series of educts, holes, or perforations, (1, leading laterally out of it. A cylindrical valve, B, fits into the space c and rests upon the upper end of a screw, 0, screwed upward through a lever, 0, arranged as shown, and fulcrumed to cars f f, extending downward from a flange, g, projecting from the body A, just below the holes cl, such flange having its upper surface sloping or concave, as represented. The longer arm of the lever 0 extends upward between two other ears, 71., projecting from the flange in range, or thereabout, with it, as shown, such arm at its end having a head or projection, 1?,to prevent it from falling between the arms far enough for the valve to drop out of the space 0. The shorter arm of the lever C- is forked, its fork is being directly over the fork Z of an auxiliary lever, D, fulcrumed to the ears h. The longer arm of the lever (3 takes a bearing on the lever I), as shown at Z. A fusible connection or piece of readily-fusible metal, E, shaped like the letter I, is fixed, as shown, within the forks of the two levers C and D. Furthermore, an annulus, F, concave, as represented on its under side,surrounds the body A loosely, and rests upon the flange 9. There is a hole, or, through the lever D, in order to enable a person to gain access with a screw-driver to the screw 6, to turn it to set the valve up to its seat atthe top of the space 0. On the atmosphere of the room, or that next the sprinkler rising to a temperature suflici'ent to melt the fusible connection E, the levers will be set free on such melting taking place, and the valve, by the pressure of the water, will be depressed, so as to allow the water to be discharged through the holes or perforations it into the annular space between the flange g and the ring F. From such space the water will be discharged radially in a thin sheet, such water, in making its escape, forcing the ring upward, and being caused by it and the flange to be discharged in a thin sheet,

as stated.

I claim in the said automatic sprinklcr- 1. The combination of the chambered and perforated body and its valve with the two forked levers and theirreadilyiusible connection, constructed and adapted substantially as set forth.

2. The combination of the chambered and perforated body and its flange with the ring encompassing such body and resting on the flange, and with the valve and the two levers and the fusible connection of the said levers, adapted and arranged substantially as represented.

3. The combination of the chambered and perforated body and its valve with the two forked levers, their fusible connection, and the valve-adjusting screw in one of such levers, all

being arranged and applied substantially and to operate as set forth.

4. The combination of the chambered and perforated body provided with the flange and two sets of cars projecting therefrom, as set forth, with the valve and its scat arranged in the lower part of such body, and with ihe two forked levers fulcrunied to the said sets of ears, and arfanged 'and provided with a fube escaping through the perforations of the sible connection to both of them, (the said body and between the flange and the ring over levers,) and with a head to the longer arm of such flange.

the upper of them, all as shown and described, WALTER BAKER FOWLER. such head being to limit the fall of the lever, \Vitnesses: in order to prevent the Valve from dropping JOHN S. GILE,

out of its sustaining-recess While water may JOHN J KILBRIDE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3812915 *Jun 4, 1973May 28, 1974Factory Mutual Res CorpDischarge head having constant force plug retaining member
US3971443 *Jun 11, 1975Jul 27, 1976Factory Mutual Research CorporationDischarge head having dual function plug retaining member
US4105076 *Nov 22, 1976Aug 8, 1978Grunau Company Inc.Concealed sprinkler head
Cooperative ClassificationA62C37/09