US1599411A - Nozzle - Google Patents

Description

sept'. 14,1926. 1,599,411l

J. J. GILSENAN NOZZLE Filed June 20. 1924 INVENTon ATTO EY' x |series of adjacent streams which Patented Sept. 14, 192th PATENT OFFICE.

JOnHN J'. GILSENAN, OF NEWARK, NEW JERSEY.

NOZZLE.

Application led .Tune 20, 1924. Serial No. 721,186.

This invention relates to an improved noz-v zle which is designed to provide particularly for fire protection, and which is adapted'to project a thin, either extinguish a fire or to provide what, in 'fire department operation, is called a waterr curtain. I

The invention is particularly designed to provide a nozzle which can be quickly changed to provide for various installations and to meet different requirements and one, which while light, is firm enough. to withstand hard usage and to keep its shape even under excessive water pressure.

The particular object of the invention is to project an'unbroken sheet of water, that is, a curtain of water and not a spray or latter are not eflicient as heat will penetrate between the subdivisions ot the stream. This water curtain is accomplished by making the nozzle casing so that the Water undergoes a rather sharp change or acute change in direction at the same time that it begins to spread and it is thus formed into a smooth unbroken sheet, the slitv at the end serving only for regulating its thickness and its direction. It this angular wall or spreader is not interposed to spread the stream into a sheet, that. is, 4if Ithe fan-shaped stream is projected straight ahead orl only slightly changed it does not form a sheet but soon after leaving 'the nozzle it shoestrings, In other words, it separates into independent small streams or a spray, which is not the sort of stream that will serve as a water curtain at a large fire or conflagration.

The invention is illustrated in the accompanying drawings in which Figure 1 is a front view of a nozzle embodying my invention and Figure 2 is a vertical section on line 2-2 in Figure l. Figure 3 shows the manner ofusing the nozzle on a vessel and Figure 4 shows the method of using the nozzle on the roof of a building to provide for a curtain of water when necessary to cover the outer walls of the building. j

The nozzle consists of a casing 10 which for lightness, is usually Ina-de of aluminum and is cast, having walls suiciently thick to provide for handling high pressure and` is provided at one end with a cylindrical portion 11 which is adapted for connection to a -pipe 12 either ,being screwed thereon or it can be fastened as illustrated by means of the flange 13 which receives the'bolts 14.

fan-shaped sheet of water to.

f United States Letters The nozzle has an outlet end and to provide for a broad, thm sheet of water, the outlet end 15 is arcuate or fan-shaped and isl outwardly tapering side walls 36 define the edges of the thin sheet of water into which the stream is transformed by the outwardly flaring walls 17 and 35. The device can be made of one integral piece as a casting but I may form it by making the wall 17 in the form `of a blade which in the formshown has a rib 18 which is secured bv the bolts 19.

To brace the plate 17 at the outlet end of the nozzle, one or more bolts 21 may be used to hold 'these parts in their normal positions and when high pressure is necessary because the strain on the casing is severe in transferring the stream of water quickly from a cylindrical stream vto one that is very broad and narrow.

The casing l0 isusually made so that its outlet is at an angle to its inlet end, this arrangement being of the greatest advantage as in the installation shown inl Figure 4 in which the nozzle is shown as secured to the pipe 22 and is directed downward over the end of the roof and is adapted to be in place at all times', being part of the permanent equipment of the structure. It will be eviden-t, however, that it can be a portable device used on the end of a line of hose. When it is used as a portable device the nozzle is very often used to 'spray such things as lumber piles, and in this case it is caused to rest on the ground and to hold it in position I may provide it with the `rib 23 of the desired width and depth.

The device is also particularly adapted v for'use on ships and the like, as it can be lowered down through a' hatchway 24 `and when placed on a bend pipe can be installed to direct a fan-like sheet of water along any particular deck and .I show a pipe 25 in Figure 3 which form of pipe for this purpose will be more fully j Patent .j.,".1,476,810,l issued December 11, 1923, for nozzle.

understood frommv yards or on the outer walls of buildings that are close to danger of fire risks, I equip the nozzle with an automatic valve for permitting the operation ofthe nozzle under veryVI high heat. In the drawing I show the valve 26 whichis a flap valve, pivoted' at 27 at the inlet end of the, nozzle and having a gasket or Washer adapted to be seated against the valve seatL 29 to shut o1f tlie water. l

The valve is held shut by a bracing arm inside the casing which rests against a suitable part of the valve easing and to illustrate ,this feature I show the "curved arm 34 resting against the fusible element 28 usually a sheet of metalused for fusible and similar purposes, this element 28 being fastened in place to part of the easing and covering,v the opening 29 through which the bracing arm 34 is adapted to project when the water forces the valve open afterthe fusible element 28 has melted.

The flap valve 26 has a washeror other suitable means which seats itself around the edges of the -opening 29 when the valve 26 is swung to its open position so that when the valve is open there is no leakage at this -point. The projection of the bracing arm can be utilized in the`.operation of ay signal,

electric or otherwise, and to vmake this clear I show in the drawing a switch 3 1 which can beformed of 'plates as in an ordinary electric knife switch and the arm 34 comes between them and completes a circuit vin which "theyare placed so that either under fire conditions or due to accident when the valve is open the alarm is actuated. Any 4 projects a broad flat sheet of Water 32 downward to entirely cover the building belovt7 it and to a large extent to eachV side.

Small supplemental openings can be put in Where necessary to permit small streams as at 33 to be projected upward on the cornice or any other elements above the nozzle. The nozzle is also lparticularly adapted for use in projecting foamingl materials that are commonly caused to flow over the contents of oil tanks to prevent or to stop combustion since the flowing from the broad flat nozzle does not break up the stream which under smaller stream conditions does happen and the foaming appa- .i

ratus loses itsl efficiency.

I claim: i v

AA nozzle comprising an inlet portion and a lbody portion directly connected thereto, said body portion formed of an outwardly flaring wall disposed transversely across the inlet passage at an angle of substantially tothe axis thereof, and a second voutwardly flaring Wall joined to' the rst wall by outwardly tapering side walls, said outwardly Haring walls being spaced at their outer ends to provide a narrow elongated discharge opening. j i v j In testimony that I claim the foregoing, I have hereto set my hand,this 7th day of June, 1924. y n

JOI-IN J. GILSENAN.

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