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Publication numberUS2585509 A
Publication typeGrant
Publication dateFeb 12, 1952
Filing dateNov 4, 1949
Priority dateNov 4, 1949
Publication numberUS 2585509 A, US 2585509A, US-A-2585509, US2585509 A, US2585509A
InventorsSmith Charlie W
Original AssigneeSmith Charlie W
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Self-adjusting fire nozzle
US 2585509 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Feb. 12, 1952 w, s n- 2,585,509



Application November 4, 1949, Serial No. 125,504

1 Claim. 1

This invention relates to hose nozzle attachments, and more particularly to a nozzle attachment for a high pressure hose of the type employed in fire fighting.

A main object of the invention is to provide a novel and improved self-adjusting tip attachment for a fire hose, said attachment being very simple in construction, being easy to install, and being automatically expansible under conditions of increased water pressure whereby itmay be employed on a fire hose over a wide range of variation of water pressure, avoiding the necessity of changing nozzles on the hose.

A further object of the invention is to provide an improved nozzle attachment for a high pressure water hose which provides an orifice which automatically adjusts itself in size in accordance with the degree of water pressure at the nozzle, whereby it is unnecessary to change nozzle tips for different degrees of water pressure, said attachment being inexpensive to manufacture, being very rugged in construction, and requiring very little labor to install.

Further objects and advantages of the invention will become apparent from the following description and claim, and from the accompanying drawings, wherein:

Figure 1 is a side elevational view of the discharge end of a high pressure water hose employing a nozzle tip attachment constructed in accordance with the present invention;

Figure 2 is a cross-sectional detail view taken on line 2--2 of Figure 1;

Figure 3 is a transverse cross-sectional view taken on line 3-3 of Figure 2;

Figure 4 is a longitudinal cross-sectional detail view of the expansible tip device employed in the nozzle of Figure 1, said view being taken on line 44 of Figure 2.

Referring to the drawings, H designates the end of a high pressure water hose, such as a fire hose, and I2 designates a conventional cutoil valve secured to the end of the hose H in any suitable manner. The valve l2 has an operating handle [3 for opening and closing the valve. The valve I2 is formed at its outer end with a threaded extension I4, and threadedly engaged on said extension is a cylindrical sleeve l5. Designated at [6 is a tapering tip member which is preferably formed of molded rubber or similar resilient nonmetallic material, said tip member having embedded therein a plurality of evenly spaced, longitudinally extending, flat strips of spring metal, such as spring steel, designated at H. At its larger end the tip member I6 is formed with an integral, outwardly extended, annular flange l8 which is received in an annular shouldered recess [9. The recess I9 is formed in the sleeve member l5 adjacent the internal threads thereof, designated at 20, which engage on the threads M of the valve member l2. The annular recess I9 is formed with substantially the same mean outer diameter of the threads l4, whereby the end of the valve member 12 may engage the flange l8 and compress said flange against the shoulder of the recess l9, as shown in Figure '2. This rigidly clamps the tapering tip member it within the sleeve member l5.

When water under pressure travels through the tip member IS, the smaller end of the tip member is caused to expand slightly when the pressure of the water increases, automatically providing a larger discharge orifice for the water. The resilient strips I! are thereby flexed outwardly as the material of the tip member expands, and exert a reinforcing action on the tip member. At the same time said metal strips prevent permanent distortion of the tip member and cause the tip member to contract to its original size when the pressure is relieved.

It is therefore seen that a novel device has been provided which automatically expands to provide an increased orifice under conditions of high pressure, whereas a smaller orifice is provided when the water is at a relatively low pressure. Therefore, it is unnecessary to change nozzles when water pressure conditions in the hose H vary. A single nozzle device such as above illustrated may therefore be employed under a wide range of water pressure conditions.

While a specific embodiment of a self-adjusting pressure responsive nozzle for high pressure water hose has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claim.

What is claimed is:

A self adjusting hose nozzle for attachment to the end of a high pressure hose comprising an open ended cylindrical member having one end adapted to be secured on said end of said hose, a tip member fabricated of an elastic nonmetallic material positioned longitudinally within said cylindrical. member and having one end secured therein in communication with said end of said hose and having the other end terminating contiguous to and spaced inwardly from the other end of said cylindrical member and providing an outlet orifice, said tip member being tapered inwardly from said one end to said other end thereof whereby upon flow of water through said tip member, said orifice automatically adjusts in size in accordance with the degree of Water pressure in said hose, and means carried by said tip member for preventing the permanent distortion of the latter, said means comprising a plurality'ifgof iciro m ferentially' spaced; longitudinally extending strips *fabrioated'of resilient material embedded in said tip member.


4 REFERENCES CITED The following references are of record in the tile of this patent:

UNITED STATES PATENTS Number Name Date 591,067 Wallace Oct. 5, 1897 1,702,508 Herrmann Feb. 19, 1929 2,534,874 Mettler Dec. 19, 1950 5 FoaEIG rATEjNrs Number Country Date 50,792 Sweden Jan. 25, 1922 82,606 Germany Aug. 8, 1895

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US591067 *Dec 12, 1896Oct 5, 1897David Steel WallaceAutomatic siphoning device
US1702508 *Mar 1, 1926Feb 19, 1929Herrmann Karl LApparatus for picking cotton
US2534874 *Jan 26, 1948Dec 19, 1950George MettlerRefrigerant expansion device
*DE82606C Title not available
SE50792A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2937802 *Sep 19, 1955May 24, 1960Fisher Ernest FVacuum producing and conveying means
US2953248 *Mar 28, 1956Sep 20, 1960Bird Machine CoApparatus for clearing restricted orifice
US3051512 *Mar 20, 1958Aug 28, 1962Us Rubber CoExpansion joint
US3353565 *Sep 21, 1964Nov 21, 1967Swel Plug IncPipe end insert
US3478963 *Sep 6, 1968Nov 18, 1969Archilithic CoDispensing gun for fiber rovings and cementitious materials
US3776470 *Sep 30, 1971Dec 4, 1973Gen Mills IncVariable nozzle
US6604548 *Oct 4, 2001Aug 12, 2003Vaporless Manufacturing, Inc.Safety valve
US7258285Jan 14, 2005Aug 21, 2007Elkhart Brass Manufacturing Company, Inc.Adjustable smooth bore nozzle
US7445166May 6, 2005Nov 4, 2008Jeffrey Marc WilliamsAdjustable solid-flow nozzle and method
US7971800Aug 20, 2007Jul 5, 2011Elkhart Brass Manufacturing Company, Inc.Adjustable smooth bore nozzle
US8002201 *Jul 13, 2008Aug 23, 2011Watershield LlcHose nozzle apparatus and method
US8006923Dec 11, 2008Aug 30, 2011Elkhart Brass Manufacturing Company, Inc.Smooth bore nozzle with adjustable bore
US8313044Jul 26, 2011Nov 20, 2012Elkhart Brass Manufacturing Company, Inc.Smooth bore nozzle with adjustable bore
US8882002Jul 20, 2011Nov 11, 2014Watershield LlcAdjustable smooth bore nozzle
US20120118998 *Nov 11, 2011May 17, 2012Arno DrechselAdjustable flow jet irrigator device
DE1144961B *Jul 3, 1959Mar 7, 1963RoehrenwerkDuese fuer die Foerderung von verunreinigten Medien
U.S. Classification239/533.13, 138/138, 239/602, 138/45
International ClassificationB05B15/02, B05B1/00, B05B1/32, B05B1/30
Cooperative ClassificationB05B1/00, B05B15/0291, B05B1/323
European ClassificationB05B1/00, B05B15/02D, B05B1/32A