US2552445A - Fire hose nozzle - Google Patents

Description

A. NIELSEN FIRE HOSE NOZZLE May 8, 1951 Original Filed March 1, 1946 INVEN TOR. Aaomq A/xasav Patented May 8, 1951 FIRE HOSE NOZZLE Adolph Nielsen, Oakland, Calif., assignor of onehalf to Clarissa E. Caird, Santa Rosa, Calif.

Continuation of application Serial No. 651,049,

March 1, 1946.

1950, Serial No. 143,123

1 Claim.

This invention relates to hose nozzles of the type employed to extinguish fires and of the general type disclosed in my copending application entitled Hose Nozzle, filed January 26, 1946, and bearing Serial No. 643,690.

This application is a continuation application of my copending application entitled Fire Hose Nozzle, filed March 1, 1946, and bearing Serial No. 651,049, now abandoned.

It is the principal object of my present invention to provide an improved but extremely simple hose nozzle for fire extinguishing purposes in which the character as well as the pattern of the fluid discharge may be quickly and easily varied by the operator during use so as to obtain a fluid discharge of characteristics suitable to meet different conditions, which nozzle can be very inexpensively produced.

One form which the invention may assume is exemplified in the following description and illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a view in central longitudinal section through a hose nozzle embodying the preferred form of my invention.

Fig. 2 is a fragmentary view in side elevation of the nozzle.

Fig. 3 is a transverse sectional view through the nozzle taken on line 3--3 of Fig. 1.

Figs. 4 to 7, inclusive, are fragmentary views in central longitudinal section showing the spray head end of the nozzle in various conditions of adjustment.

Referring more particularly to the accompanying drawings, in indicates a hose nozzle embodying the preferred form of my invention. The hose nozzle comprises a conductor cylinder H having an enlarged bore I2 extending inwardly from the inlet end of the conductor cylinder and a smaller bore 9 extending inwardly from the discharge end of the conductor cylinder ll. At the junction of the two bores 9 and I2 occurs an annular shoulder 8.

The outer or inlet end of the bore [2 is interiorly threaded at |2a to receive the threaded shank of a tubular connection M for connecting a conduit or hose l5 to the nozzle.

The conductor cylinder II is exteriorly threaded at its opposite or discharge end to threadedly engage a counterbore [6a formed in the inlet end of a cylindrical nozzle barrel ll. From the threaded counterbore Ilia through its opposite or discharge end the nozzle barrel H is formed with a straight bore l8 of a diameter I discharge end of the cylinder IT.

This application February 8,

agreeing with the diameter of the bore 9 and in axial alignment therewith.

The nozzle barrel I1 is formed with a concentric knurled turning nut I9 which is located adjacent the inlet end of the nozzle barrel ll. The nut I e is enlarged in diameter so that the operator of the nozzle may grasp the conductor cylinder 1 I in one hand and turn the nut I9 with the other so as to create a telescopic action between the two parts which, as hereinafter described, actuates a valve mechanism controlling the discharge of fluid through the discharge end of the barrel ll.

In its discharge end the nozzle barrel I1 is formed with a valve seat 20 which circumscribes the perimeter of the bore [8. This valve seat 20 is provided for cooperation with a concentrically arranged poppet valve 2i disposed at the The poppet valve 2| is of a diameter just slightly less than the external diameter of the nozzle barrel ll and. it has a seating face to cooperate with valve seat 29, as illustrated. Relative movement between the valve 2| and the valve seat 20 coaxial of the barrel ll obviously creates opening and closing movement of the valve.

The valve member 2| is fixed on a valve stem 22 at one end thereof. Also fixed on the valve stem 22 are two spiders 23 and 24, one of which is of a diameter to slidingly engage the bore I8 in the nozzle barrel I l and the other is of a diameter to slidingly engage the bore [2 in the conductor cylinder II. The axial spacing between the spider 24 and the valve member 2| is such that by partly unscrewing the conductor cylinder II from the nozzle barrel ll the valve 2| will be drawn tightly against the seat 2!} to effect closure of the discharge end of the nozzle barrel IT. This is accomplished by engagement of the shoulder 8 with the spider 24.

By opposite telescopic action between the conductor cylinder H and the nozzle barrel ll, due to relative rotation therebetween, the valve 2] may move endwise away from the seat 2!] effecting opening of the discharge end of the nozzle barrel ll. It should be pointed out here that the pressure of the fluid discharging through the nozzle will, of course, exert an opening pressure against the valve 2!. The opening movement of the valve 2| is of course limited by the engagement of the spider 24 with the shoulder 8 which is interposed between the bores 9 and [2 of the conductor cylinder H.

I provide means for controlling the pattern of the spray which is to be discharged from the 2,552,445 v. r l

discharge end of the nozzle barrel l1. That is to say, the stream of the fluid as it is discharged I wish to point out here that a spray in the form of a disk is highly desirable in that in addition to having extinguishing characteristics, it enables the fireman to approach the fire behind a curtain of water spray or fog. By the use of the deflecting means which will be described, the fireman may readily change the p'atternf of the spray from disk form to a straightstream form of any intermediate point to suit the c onditions met.

In the present instance this is accomplished by providing a circumscribing cylindrical deflector cuff 25 of an internal diameter somewhat larger than the external diameter of the valve member 2! and the nozzlebarrel W. This deflector cud 2'5 is formed at the forward end of a deflector sleeve 26 rotatably and reciprocably fitting the external periphery of the nozzle barrel 11. By adjusting the axial position of the deflector cuff 25 relative to the discharge terminal of the nozzle barrel H, the pattern of the spray is varied. In other words, by adjusting the extremity of the inner periphery of the cufi 25 relative to the opening between the valve 2| and the valve seat 20, the character of the spray is changed, as shown in Figs. l to .7, inclusive. In Fig. l the spray is shown as assuming a disk-like form, while in Fig. 5 it is illustrated as assuming an almost cylindrical form of a diameter comparable to the interior diameter of the cull 25 of the deflector sleeve 26.

To effect-adjustment of the deflector sleeve 26 axially of the nozzle barrel l1 and to maintain it in adjusted position, the deflector sleeve 26 is formed with a cam slot 2? having a series of notches '23 formed in its forward edge. These notches 28 are complemental to a latch pin 25 fixed in the nozzle barrel I! and projecting radially therefrom. By moving the deflector sleeve 26 slightly forwardly, disengagement may be effectedbetween any of the notches 28 and the pin 29, enabling rotation of the deflector sleeve relative to the nozzle barrel [1. 'Such rotation effects axial movement of the deflector sleeve 26 relative to the nozzle barrel l1 due to the cam formation of the slot 21. As is seen, the opposite terminals of this slot are located at a spaced axial distance apart. The deflector sleeve 26 will be latched against inadvertent movement by engagement of the pin'29 with the proper notch 28, which engagement will be maintained when the nozzle is in use due to the reaction of the fluid pressure discharging through the discharge end of the nozzle.

Assuming that the valve is in open condition, such as illustrated in Fig. 1, if it is desired to close the valve or to reduce the amount of valve opening it is only necessary to relatively turn the conductor cylinder H and the nozzle barrel H in a direction tending to withdraw the conductor cylinder from the barrel H. The spider 2 3 of course will be moved axially endwise with the'conductor cylinder l l due to the engagement thereof with the shoulder 8 so that the fireman Wishing to change the amount of water"di scharged need merely rotate the barrel l'l relative to the conductor cylinder 1 l until he has adjusted the amount of water discharging to that desired. Continued adjustment of the amount of water discharged results in the seating of the valve 2| on the valve seat 2|] completely closing the end of the barrel.

,If desired to adjust the character of the spray, as'previously described, it is only necessary for the fireman to grasp the deflector sleeve 26 and move it slightly forwardly to disengage the pin 29 from the notch 28 with which it is engaged and then rotate the sleeve in the proper direction to axially advance or retract the sleeve 26, as is desired, and then releasing the sleeve permitting the pressure reaction to latch the same in position due to a re-engagement of the pin 29 with'a registering notch 28.

From the foregoing it is obvious that I have provided a relatively simple hose nozzle construction by means of which the character of thespray and t epattern of the spray discharged maybe quickly adjusted, while the device is in operation.

While I have shown the preferred form of my invention, it is to be understood that various changes may be made in its construction by those skilled in the art without departing from the spirit of the invention as defined in the appended claim.

Having thus defined my invention, what I claim and desire to secure by Letters Patent is:

A hose nozzle comprising in combination a body internally threaded at one endrto receive a hose coupling and externally threaded at the opposite end to adjustably receive a sleeve for rotation with respect thereto and for relative longitudinal movement in response to relative rotation, an

external shoulder on said body limiting the eX- tent of relative longitudinal movement in one direction, an internal shoulder within said body, a

outer end 'of said sleeve, a valve having substantially the'same diameter as the external di ameter of the valve seat carried by the outer end of said valve stem and fixed with respect to said body,'said'valve having a flat inner'valve face disposed transversely of the nozzle whereby relative longitudinal movement of the sleeve and body willc'ause the valve seat of the sleeve to move toward or from the valve face, a deflector cuff mounted on said sleeve for movement therewith and for rotary and longitudinal movement relative thereto, said cuff having an inner cylindrical portion fitting over said sleeve and through out its full length slidably engaging the sleeve to be supported thereby and an outer cylindrical portion of greater internal diameter than said inner cylindrical portion, and an inwardly tapering frusto-conical wall between said portions, the inclination of which substantially coincides with theinclination of the valve seat, and means for limiting movement of the cult relative to the valve 50 that the cuff when in its forwardmost position has its inner cylindrical portion'and frusto-conical wall disposed rearwardly of the valve and when in its rearwardmost position withrespect to the sleeve has the outer end there 5 of disposed substantially flush with the outer UNITED STATES PATENTS end of the sleeve. Number Name Date ADOLPH NIELSEN Re.21,469 Stein May 28, 1940 5 Bower Mar. 1, The following references are of record in the FOREIGN PATENTS file of this patent: Number Country Date 398,708 Great Britain Sept. 21, 1933

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