US2760826A

US2760826A - Nozzle valves

Info

Publication number: US2760826A
Application number: US342365A
Authority: US
Inventors: George G Allenbaugh
Original assignee: Akron Brass Co
Current assignee: Akron Brass Co
Priority date: 1953-03-16
Filing date: 1953-03-16
Publication date: 1956-08-28
Anticipated expiration: 1973-08-28

Description

8, 1956 G. G. ALLENBAUGH 2,760,826

NOZZLE VALVES Filed March 16, 1953 IN VEN TOR. 650266 6. ALL E/VBAUGH 2/0/45); WA rrs, wee-erouufimwur United 515211768 Patent N OZZLE VALVES George G. Allenbaugh, Rittman, Ohio, assignor to Akron Brass Mfg. Company, Inc, Wooster, Dino, a corporation of Ohio Application March 16, 1953, Serial No. 342,365

6 Claims. (Cl. 299-144) This invention relates to a combination fire hose nozzle and, more particularly, to a fire hose nozzle wherein alternate streams are available for application to a fire by operation of a valve.

A primary object of the invention is to provide a fire hose nozzle capable of alternately discharging a straight stream and a fog with water supply to the fog nozzle being strained. v

Another object of the invention is to provide a combination fire hose nozzle having a rotatable valve member in which the ports are disposed to prevent the discharge of water from the alternate paths concurrently.

A still further object of this invention is to provide a combination fire hose nozzle in which the strainer for the channel to the fog nozzle is cleanable by operating a straight-stream portion of the nozzle. I

Another object of this invention is to provide a valve mechanism for a combination fire hose nozzle capable of preventing the flow of unstrained water to the fog producing elements connected thereto. I v

Other objects, features and advantages will be more readily understood from a consideration of the following detailed specification and claims taken in connection with the accompanying drawings in which:

Fig. 1 is an end view of the nozzle having parts out away to show the valve operating mechanism;

Fig. '2 is a longitudinal cross-sectional view taken along line 2-2 of Fig. 1; and

Fig. 3 is a cross-sectional view taken along line of Fig. 2.

Referring first to Fig. l, a combination fire hose nozzle is shown therein having a perforate body 10 with an inlet portion 12 and an outlet portion"l4. A longitudinally disposed handle 16 is fixed to the body 10 byscrews 18. The body 10 is provided with threaded inlet .20.Whi ch will attachto a standard fire hose coupling. A channel 34 is formed in the outlet portion 14 of the body"10"and has an angularly disposed portion 22 which is joined ,to theinlet 20 at the threaded opening. An open-ended conical screen 24 spans the angularly disposed-portion 22 and hasthe larger of the open ends in register with the inlet. shoulder 28 formed at the inlet to the angularly disposed portion 22. A resilient sealing ring 30 engages the side of the screen flange 26 opposite to the shoulder 28 and seals against leakage around the outside of the screen when the end of the fire hose coupling is urged thereagainst by the threads in the inlet 20.

The outlet portion 14 of the body 10 has a longitudinal bore 32 formed therein in alignment with the inlet and the centerline of the screen 24 and cooperates with the inlet 20, the inlet portion 12 to form a straight-through bore in the body 10. In operation, the bore 32 delivers a straight stream of water directedin a path substantially parallel to the centerline of the nozzle.

The channel 34 is formed in the outlet portion 14 of the body 10 substantially parallel to the bore 32 for receiving a fog-producing nozzle 36. The fog nozzle is A flange 26 formed on the screen 24 engages a of the bayonet type having an end in engagement with a seal 38 which effectively eliminates leakage around the nozzle 36, and provides a water-tight, quick detachable joint.

A valve member 40 in the form of a flat circular disc is carried for rotation at the joinder of the inlet portion 12 and the outlet portion 14 of the valve body it). An annular groove 42 is formed around the member 44) adjacent the side confronting the inlet and an O-ring 44 is located therein in engagement with the inner wall of the inlet portion 12 for preventing leakage of the water around the outside of the valve member 40. A similar groove 46 is formed adjacent the face of the disc confronting the outlet and has an O-ring 48 located therein in engagement with the wall of the outlet portion 14 for preventing leakage between the valve member 40 and the body 10. The provision of the O-rings 44 and 48 eliminates the necessity for a seal at the joinder 50 of the inlet portion 12 and outlet portion 14.The two parts of the valve body 10 are held together by a plurality of screws 52 spaced circumferentially therearound. f

The valve member 40 has a port 54 formed therein which is alignable with the downstream opening'of the screen 24 and the bore 32 when the valve member is positioned to deliver a straight stream from the nozzle. A second port 56 is formed in the member 40 alignable with the channel 34 and an opening 58 in the angularly disposed portion 22 thus providing a flow path fromthe inlet of the nozzle to the fog nozzle 36. The bore 32 and the channel 34 are diametrically opposedv relative to the center of rotation of the valve member 40. The ports 54 and 56 are positioned adjacent to each other and located in such a manner that in a center-0E position, the ports 54 and 56 are between the bore 32 and the channel 34. When facing in the direction of discharge ofthe nozzle, clockwise movement of the valve member brings the port 54 into alignment with the bore 32 and a straightstream discharge is obtained. Counterclockwise movement moves the port 56 into alignment with the channel 34 and a fog stream is obtained from the fog nozzle 36 Water for the fog stream passes through'the screen 24 into the cavity 22 through the opening 58through port 56, through the sleeve-like seal 68 and into the channel 34 to which the fog nozzle 36 is'connected. Other port positions maybe used when required by a sequence of operation or a particular location for the closed position by relocation of the ports relative to each other, the bore 32 and the channel 34.

A sleeve-type seal 60 has one end in engagement with the face of the valve member 40, the seal being loosely fitted in the recess 62 confronting the valve member 40. An O-ring seal 64is located between one wall of-the recess 62 and a flange 66 on the seal 60. A similar sleeve-type seal 68 is provided in alignment with the port'56 having one end engaging the member 40; The

seal 68is cloosely fitted in the recess-70 rconfr onting.the

valve member 40. A resilient channel seal 72 is located between one wall of the recess 70 and a flange 74 on the seal 68.

An operating knob 76 is threadably mounted on the valve member 40 and is used to position the member to bring the ports 54 and 56 into alignment with their respective channels as desired by the operator. A passage 77 formed at the joinder of the inlet portion 12 and the outlet portion 14 of the body 10 has a width which will allow the movement of the knob 76 and a length sufficient to determine the path of travel of the knob 76 between the position wherein the flow path is open to the straight-stream bore 32 and to the position where the flow path is open to the fog nozzle 36. In the position shown in Fig. 3, neither port is in register with an opening and the valve is in the ofi position. When the knob 76 is moved to one of the open positions, it engages a wall 78 which limits the travel thereof to one of the open positions.

In operation, the combination nozzle is used for alternately directing solid water streams and water fog on fires as required by the nature of the fire to be extinguished. The nozzle is equipped to operate successfully when using sea water or water from streams which are not necessarily free from contamination and debris. In order to eliminate the clogging which would occur to the fog nozzle jets by such contamination, the strainer 24 is located in such a manner that all of the water passing to the fog nozzle 36 must first be cleaned. This results in an accumulation of dirt in the screen 24 which i would eventually stop the flow of the water to the fog nozzle 36. When this condition arises, the valve member 40 is operated to the position wherein the water flows through the straight-stream bore 32 and the dirt and debris are carried out of the strainer 24 to the open end thereof thus eifectively cleaning the screen almost instantaneously. The valve may then be returned to the fog producing position and the operation continued as desired.

A further safe-guard for continuous operation has been I provided in that the ports 56 and 54 are so disposed that it is impossible for uncleaned water to enter the channel 34 connected to the fog nozzle 36. The port 56 at no time can be brought into register with the open through which the water entering the channel is conducted.

3. A nozzle comprising a body having a bore therethrough and a channel parallel to the bore having an outlet and an angularly disposed portion intersecting the bore, a plate-like valve member rotatable in the body having its axis of rotation parallel to the bore and channel, a port in the plate alignable with said bore, a second port in the plate alignable with the channel, and filtering means in the bore through which the water entering the channel is conducted.

4. A nozzle comprising a body having a bore therethrough and a channel parallel to the bore having an angularly disposed portion intersecting the bore, a platelike valve member rotatable in the body having its axis of rotation parallel to the bore and channel, ports in the plate alignable with said bore and the channel respectively, an open-ended screen in the bore adapted to filter the water entering the channel through the angularly disposed portion, the open ends being arranged in alignment with said bore, the contents of the screen being discharged through the bore by flow of water therethrough.

end of the screen 24. Further, the ports 54 and 56 cannot be concurrently opened to the inlet of the nozzle. This prevents short-circuiting of the uncleaned water into the fog nozzle passage thus eliminating the possibility of clogging the fog jets.

The handle 16 has been provided to allow the firefighter to move the nozzle and hose without changing the adjustment of the valve thus eliminating the accidental cutting ofi of the water stream as the fire hose is moved in the direction of the fire.

It is to be understood that the specific nature of the present disclosure is not intended to be restrictive or confining and that various rearrangements of parts and modifications of design may be resorted to without departing from the scope or spirit of the invention as herein I claimed.

What is claimed is:

1. A nozzle comprising a body having a bore therethrough and a channel parallel to the bore having an out- 5. A nozzle comprising a body having a bore therethrough and a channel parallel to the bore having an angularly disposed portion intersecting the bore, a platelike valve member rotatable in the body having its axis of rotation parallel to the bore and channel, a port in the plate alignable with said bore, a second port in the plate alignable with the channel, an open-ended screen in the bore adapted to filter the water entering the channel through the angularly disposed portion, the open ends being arranged in alignment with said bore, the contents of the screen being discharged through the bore by flow of water therethrough.

6. A nozzle comprising a body having a bore therethrough and a channel parallel to the bore having an angularly disposed portion intersecting the bore, a platelike valve member rotatable in the body having its axis of rotation parallel to the bore and channel, a pair of ports in the plate alignable with said bore and the channel respectively, said ports being adjacent each other and between the bore and the channel, an open-ended screen in the bore adapted to filter the water entering the chanlet and an angularly disposed portion intersecting the bore, a plate-like valve member rotatable in the body having its axis of rotation parallel to the bore and channel, a pair of ports in the plate alignable with said bore and the channel respectively, and filtering means in the bore through which the water entering the channel is v conducted.

2. A nozzle comprising a body having a bore therethrough and a channel parallel to the bore having an outlet and an angularly disposed portion intersecting the bore, a plate-like valve member rotatable in the body,

a pair of ports in the plate alignable with said bore and I the channel respectively, and filtering means in the bore nel through the angularly disposed portion, the open ends being arranged in alignment with said bore, the contents of the screen being discharged through the bore by flow of water therethrough.

References Cited in the file of this patent UNITED STATES PATENTS 2,376,881 Nielsen May 27, 1945 2,389,642 Schellin Nov. 27, 1945 2,475,702 Funke July 12, 1949 FOREIGN PATENTS 114,005 Great Britain Mar. 17, 1918 576,409 Great Britain Apr. 2, 1946