US2841229A - Apparatus for selection of turret nozzle stream pattern - Google Patents

Description

July 1, 1958 A. B. GulsE APPARATUS FOR SELECTION OF TURRET NOZZLE STREAM PATTERN 6 Sheets-Sheet 1 Filed May 3, 1955 INVENTOR. ARTH UR B. GUBSE A. B. GUISE July 1, 1958 APPARATUS FOR SELECTION OF TURRET NOZZLE STREAM PATTERN Filed May 3, 1955 6 Sheets-Sheet 2 INVENTOR. ARTHUR B. GUISE W M/MQ- July 1, 1958 A. B. eulsE 2,341,229

APPARATUS FOR SELECTION OF TURRET NOZZLE STREAM PATTERN Filed May 3, 1955 6 Sheets-Sheet 3 INVENTOR. ARTHUR B GUISE MN mm July 1, 1958 A. B. GUISE APPARATUS FOR SELECTION OF TURRET NOZZLE STREAM PATTERN Filed May 3, 1955 6 Sheets-Shee t 4 INVENTOR. ARTHUR B. GUISE BY A. B. GUISE July 1, 1958 APPARATUS FOR SELECTION OF TURRET NOZZLE STREAMPATTERN Filed May 3, 1955 6 Sheets-Sheet 5 wm Ibkbtu \EDUQMS mmvrom ARTHUR 5. Guns BY 7 z July 1, 1958 A. B. GUISE APPARATUS FOR SELECTION OF TURRET NOZZLE STREAM PATTERN a Sheets- Sheet 6 Filed May 3, 1955 INVENTOR. ARTHUR B. GUISE 9 i a @eQQS a. Q. fiat UM Qe tented July 2, 1958 The means for selecting the proper stream pattern may be actuated either by a gravitationally sensitive device or 2,841,229 by mechanical means such as lever or cam operated devies interconnectin the turret nozz and turret APPARATUS FOR SELECTION OF TURRET g 16 the NozzLE STREAM PATTERN a Optional manually actuated means for changing or ad- Artliur B. Guise, Marinette, Wis, assignor to Ansul justing the automatic stream selective means may also be Chemical Company, Marinette, Wis, a corporation of provided for use under unusual fire conditions such as Wlscolislll a fire in an elevated aircraft engine nacelle where a close Application Mays 1955 Serial No 505 738 approach is possible and a short range stream would be desired with the turret in an elevated position or in the 11 Claims. (Cl. 16925) event a spill fire were being attacked against a strong wind it mi ht be desired to have a higher velocity stream at close range than would be required under normal This invention relates to apparatus for providing Cond tionsstreams of fire-extinguishing agent of suitable predeter- A number or illustrative embodiments of the present mined stream velocity and hape from a turret-mounted invention Wlll be described In the fOllOWlIlg specification l and accompanying drawings, wherein Fire-fighting turrets are normally mounted on a plat- Figure l is a diagrammatic side elevation view of a form which may be located on the roof of afire truck or firs truck used, for 1n g g l r f cr h fire boat. The usual turret construction has the base fixed fires, the truck y ng stumble g i hing mateto the platform with the turret device rotatably mounted T1815 and Provlued With 3 turret HOZZle mounted abo in the azimuth within the base and the turret nozzle cathe fOT pP afiferfixfinguishing g r i. a t 1 view taken on ines AA of pable of bemg elevated. W Flgllle 11L Q 21 R6 10118 It is common practice for the turret nozzle platform to 2 be 8 to 10 feet above the ground. From this position the Flgufe 2 15 an l g Side VIEW Pf h turr t nozzle stream of fire-extinguishing agent can be dire t d dow construction shown in Figure 1 showing in greater detail wardly and onto spill type flammable liquid fires or dia Imam for Seleclmg i116 Stream P y Changing rected outwardly or upwardly for fires burning in elevated gle of elevation of the nozzl structures 39 l igure 3 1s a side elevation of a modrfiec turret nozzle One of the prime advantages of a turret nozzle of this i 2 Elevated: 0f 11 l'afigfi POSiiiOn, t i h very hi h fl rates f fi .exting i hi agent rigure 4- 15 a slde elevation of the turret nozzle conat i h l i i can b readily handled by a i l struction shown in Figure 3 in the depressed or short erator as the nozzle reaction is opposed in the turret Tang's POSIUOII, mounting structur With a high velocity and high flow flguffifi a Side elevation o another turret nozzle rate a very long-range stream can be obtained which can Constructwn 1n the elevated long M1126 EIOSIUOH, and b very f l in fi hti certain types f fi Figure 6 1S side elevation of the turret nozzle con- For fi hti fires Close to the turret, hcwever this type structron shown in Figure 5 m the depressed or short of stream would generally be unsatisfactory and it is more range l i W desirable to use a lower velocity, wider stream pattern as 40 Rsfernilg i Cilfiwmgs, g lllllsifltcs a typical it will cover a wider area, thereby reducing the tendency fim trick a turrct nozzle mfilnted H E! f the fl to fl h around and hchind the area of turret supported the cab 6, for e e-ctin stream plication of the fireextinguishing agent. The use of a low fire'ifxtmgmslnng g 'f 3 y velocity stream at close range also eliminates the danger i with 5umble nre'axlmglllshlflg agent carried in f splashing thfi h1g1 and agitating a flammable liquid n a suitable container. As shown in Figure 1A, the turret base is securely mounted to the truck roof 6 and the in the past same turret nozzles have been constructed fire-extinguishing agent from the storage container flows t r tthr uhcndu t Tht tb 5 so as to prov1de plurality of stream patterns WhlCh may Lei d 1 t 6 BN6 -3 be manually Selected by the turret Operator to give both :0 18 mounted in the turret base with suitable bearings and long range high velocity streams and also shorter range $5 l0 P g g p the r t d azimutbally. lower velocity stream patterns. The disadvantage of such e 3 t6 654301316 ROZZ 18 mounted 0 tic turret with onstructign is that the turret Operator must be highly trunmons 47 to permit desired changes in elevation of the skilled to select the proper stream for most effective fire il nolzlefighting. If a long range, high velocity stream is directed 55 me E Invention 15 Bartlcumwy l fi i into a flammable liquid fire at close range the fire may be the 91 3 2 033 b g cheg'mcfil b lft fife-exflngulshlfig intensified by the splashing of burning fuel or if the short agen an 15 65611 e Herein F13 @1118 Used 10? the prange low velocity stream is directed at afire farther away phcafflon of dry Chemical: hmVWe/I, Its 15 110i us from the turret the fire will not be extinguished as the restrictedstream would be ineffective. For effective use, under the The f chfimlcalmay collsislfssfifitlfiliy 0f i ely excitement of a fire condition the strain of both directing pofwjlemfl 804mm blcarbonats 7111951 13 expelled 111 a the turret Stream and Chewing thg Correct Stmam} a very fluidized COIldl'ElOn under the propulsive force of an inert 11 trainedmrret operator has been anecessity' gas, such as nitrogen or carbon dioxide at a suitable y- 1 1 i 1 in the present invent1on this disadvantage has been Shell dry example be P overcome by providing an automatic means for selecting jg g g y ifl 6156110513 or Patent the proper stream pattern relieving the turret operator y 1:

. Y. t a of this task while the fire 18 being extinguished. 9 eljctwe firee- 13 ESQ-any IO According to the present invention the proper stream $1316 t0 Prwlde WE ohstreams- 13 usually pattern i automatically determined by the angle of desirable LC use a stream or maximum range when apvation of the urret so that the range and pattern of the 1x93661312 ififgfi fife l9 ffiuufifi the intensity and per emitted stream is varied automatically to provide the proper stream pattern and range for the fire being attacked.

mit a old 2 approach and to then reduce the velocity of the stream and use a shorter range wider pattern stream ,tor most efiective use from a close range it is often times necessary to againuse the long range stream dur 7 ing the fire fighting to reach to'the far side or" the fire area. This isillustrated in Figure 1, in which two stream patterns of fire-extinguishing agent are shown; one indicated by the numeral 3 being a low velocityrelatively wide stream for close application and'the other indi-.

cated by'the numeral 4- being a longer range, higher velocity for more distant application during fire fighting. The present apparatus provides automatic means for varying the characteristics of the stream either from a long range high velocity stream to a short range low veconstructed of a plurality of tubular telescopic sections,

such as sections 7 and 7a, which are telescoped within each other and are movable relative to each other so as to provide a nozzle of adjustable length. The outermost nozzle section 7a is provided with a pivot 9 to which is connected one end of a link 3. The other end of the links is connected to a raised fixed boss 11 on the turret. When the handle 12 is manipulated so that the nozzle 7 is raised, as shown in the'solid lines of Figure 2, the

nozzle sections '7 and 76; will be extended, and .a stream 0 4 of maximum range will be produced from such extended nozzle.

upwardly, the nozzle section '70 will be drawn into the nozzle section 7 so as to produce a nozzle of shorter length, whereupon the stream 3 emitted from such shortened nozzle will be decreased in velocity and will be of a broader contour or shape.

The effect of the change of the length of the telescopic nozzle of this t me of construction is more fully disclosed inU. 5. Patent 2,699,216 January 11, 1 955. The

,use of the telescopic nozzle makes it possible to provide a dry chemical stream having a predetermined cross-sectional shape,.velocity and range by continuously passing the fluidized stream of dry chemical under propellant gas pressure substantially greater than atmospheric pressure through the confined nozzle zone having a predetermined adjusted ratio of, the cross-sectional area and length 'for controlling the expansion of the propellant gas pressure within the confined zone to a desired predetermined'pressure prior to entry of the stream into the atmosphere so as to produce an emitted dry chemical stream of desired cross-section, velocity and range. The ratio of thecross-sectional area and the length of the confined nozzle zone can be adjusted while the stream is flowing continuously to suitably alter the cross-section,

velocity and range of the emitted dry chemical stream.

The construction previously described enables the nozzle sections 7 and 7a to be adjustably extended axially to any desired length by manipulation of the handle 12 so that as the angle of elevation of the nozzle is decreased, the connecting link 3 will automatically retract the foremost nozzle section 7a Within the nozzle tube 7 so as to shorten the overall length of the nozzle from which the stream of fire-extinguishing agent is'emitted. The nozzle length and diameter are so adjusted that when it is desired to produce a dry chemical stream of rela: tively greater Width in cross-sectionand of short range, the nozzle tube 7a will be fully withdrawn within the nozzle tube section 7, as shown in the dotted position of Figure 2. When a stream' of dry chemical carried in the truck is fed to the nozzle while in this position,

. the fluidizing and expellant gas of the dry chemical stream within the nozzle will cause the'expanding stream to spread out so that it has arelatively Wide cross-sectional Upon depressing the nozzle to the dotted line a position shown in Figure 2, by moving the handle 12 shape and at the same time its forward velocity is reduced so that the stream has a relatively short range, as shown by the dotted lines of Figure 2. Whenthe nozzle section 7a is extended, a stream' of maximum the nozzle at the proper angle depending upon the. po-' sition which he is assuming in relation to the fire which he is combating. Upon adjusting the angle. of depression of the nozzle,.he will automatically obtain the re 'quired characteristics of the fire-extinguishing stream necessary for combating the fire most effectively. it will thus be seen that the range characteristics of the nozzle 2 are determined by the angle of elevation of the nozzle with respect to the fixed turret 5 in such manner that a shorter range stream is obtained when the nozzle 'is dewhen pressed and the longer range stream 'is obtained the nozzle is raised.

it is obvious that other means besides those described can be utilized for automatically adjusting the nozzle length in relation to the angle of depression of the nozzle.

Other meansifor achieving stream control characteristics are illustrated in Figures 3 and 4. In such modification the nozzle is provided with two separate streambores 20 and 21 which. are controlled by a two-hole plug 22. The nozzle construction may be of the type di'sclosed in the Guise Patent 2,484,942-Oct0ber 18, 1949';

The stream bore 20produces a long range stream and V the stream bore zl'produces a short range fan-shaped stream; A nozzle tip 30 is provided in the bore 21 having the construction specifically described in 2,484,942- so as to produce a short range fan-shaped type of stream as described in said patent. The two-hole plug 22tis adapted to be rotated by solenoid 23 whichis actuated by a switch 24 operated by cam'25 on the turret body 26. The plug 22 is shown in the long range position in Figure 3 when the nozzle is in elevated position, thereby producing a long. range high velocity stream: 35. In

Figure 4, the nozzle is shown in its depressed position,

cam 25 having actuated'switch 24 to rotate the two-hole plug 22 so as to place the source of fire-extinguishing fiuid in communication .with the lower stream bore 21 of the nozzle, thereby producing a short rangerelatively fan-shaped stream 36.

Other means of actuating the stream pattern apparatus are illustrated in Figures 5 and 6. In this modification, the nozzle is provided with two separate stream bores which are controlled by a two-hole plug 22 as described in conjunction with Figures 3 and 4; The position of this two-hole plug 22 is controlled by the electric motor 37. The'operation of the electriclmotor is determined by the flow of electric current through the mercury switch 38 mounted to the turret nozzle 39. As shown in Figure 5, the turret nozzle 39 is elevated so that the mercury switch 38 has caused electrical conduit 49 to be connected to electrical conduit 41, causing electric motor 37 to turn the two-hole plug 22 to the long range position, producing the long range high velocity stream 35. When the angle of elevation is decreased, as shown in Figure 6, the liquid mercury in switch 38 will move to the other end of the switch and connect that a variety of different constructions may be utilized.

in practicing the present invention. It is to be understood that the foregoing specific constructions are to be considered merely as illustrative embodiments of the present invention and that modifications and changes may be made which are intended to be included within the scope of the appended claims.

I claim:

1. Apparatus for extinguishing fires which comprises a turret body, a turret nozzle pivotally mounted on said turret body and adapted to be adjustably moved to a selected angle of elevation with respect to the turret body, stream control means associated with the turret nozzle for determining the velocity and shape of a fireextinguishing stream discharged from the nozzle, means for actuating said control means upon pivoting of said turret nozzle, said control means being actuated upon changing the angle of elevation of the nozzle for selecting a predetermined velocity and shape of the emitted stream in correlation with the angle of elevation of the nozzle and said control meal 5 automatically determining a shorter range stream pattern when the turret nozzle angle is depressed and a longer range stream as the turret nozzle angle is elevated.

2. Apparatus as defined in claim 1, wherein means are provided to permit the turret nozzle operator to optionally over ride the stream control means and select the stream velocity and shape desired.

3. Apparatus for extinguishing fires which comprises a turret body, a turret nozzle pivotally mounted on said turret body and adapted to be adjustably moved to a selected angle of elevation with respect to the turret body, stream control means associated with the turret nozzle for determining the velocity and shape of a fireextinguishing stream discharged from the nozzle, means interconnecting said turret and said stream control means for selecting a predetermined velocity and shape of the emitted stream in correlation with the angle of elevation of the turret nozzle.

4. Apparatus for extinguishing tires which comprises a turret, a nozzle pivotally mounted on said turret, said nozzle being formed of adjustable telescopic sections, said sections being movable relatively to each other to provide a nozzle of varying length for producing a stream of varying characteristics in regard to velocity and crosssectional contour, means on said turret for moving at least one of said telescopic sections for varying the length of said nozzle, means on said turret for changing the angle of elevation of the nozzle with respect to said turret from a horizontal to a depressed position, said means for adjusting the length of said nozzle being interconnected with said nozzle and adapted to be automatically actuated upon varying the angle of elevation of said nozzle whereby a stream of desired velocity and contour characteristics is emitted from said nozzle in correlation with the angle of depression of said nozzle.

5. Apparatus for extinguishing fires which comprises a turret, a nozzle pivotally mounted on said turret, said nozzle being formed of adjustable telescopic sections for controlling the velocity and stream contour emitted by said nozzle, a link pivoted to one of said telescopic sections and connected to said turret, and means for changing the angle of elevation of the nozzle with respect to said turret fiom a horizontal to a depressed position, said link being interconnected with said nozzle for varying the velocity and stream contour emitted by the said nozzle from a stream of maximum velocity and range at approximately the horizontal position of the nozzle to a stream of shorter range and lower velocity when the nozzle is in its fully depressed position.

6. Apparatus for extinguishing fires which comprises a turret, a nozzle pivotally mounted on said turret, said nozzle being provided with means for adjustably controlling the velocity and stream contour emitted by said nozzle, means for elevating and depressing the angle of elevation of the nozzle with respect to said turret, means interconnected with said turret and said nozzle for automatically and continuously altering the velocity and stream contour emitted by said nozzle as the angle of elevation of the nozzle is changed from its raised position to its depressed position.

7. Apparatus for extinguishing fires which comprises a turret, a nozzle pivotally mounted on said turret, said nozzle being formed of adjustable telescopic sections, said sections being movable relatively to each other to provide a nozzle of varying length for producing a stream of varying characteristics in regard to velocity and crosssectional contour, means on said turret for moving at least one of said telescopic sections for varying the length of said nozzle, means on said turret for changing the angle of elevation of the nozzle with respect to said turret from a horizontal to a depressed position, said means for adjusting length of said nozzle being interconnected with said nozzle and adapted to be actuated in correlation with the angle of elevation of said nozzle whereby a stream of short range and wide contour characteristics is obtained when the nozzle is depressed and the range is increased and the contour characteristics narrowed as the angle of elevation of the nozzle is increased.

8. Apparatus for applying fire-extinguishing agent which comprises a turret, a pivotally-mounted turret nozzle for rotation in elevation with respect to the turret body, said turret nozzle being provided with spaced stream bores for emitting streams of relatively difierent velocities, a rotatable plug, means for rotating said plug to selectively direct the flow of fire-extinguishing agent through one of said bores, means for actuating the rotation of said plug in correlation with the pivoting of said nozzle whereby the stream velocity and pattern is selected by the angle of elevation of the nozzle.

9. Apparatus as defined in claim 8, wherein means are provided to permit the turret nozzle operator to optionally over ride the stream control means and select the stream pattern desired.

10. Apparatus for applying fire-extinguishing agent which comprises a turret, a pivotally-mounted turret nozzle for rotation in elevation with respect to the turret body, said turret nozzle being provided with spaced stream bores for emitting streams of relatively difi'erent velocities, a rotatable plug, means for rotating said plug to selectively direct the flow of fire-extinguishing agent through one of said bores, means for actuating the rotation of said plug in correlation with the pivoting of said nozzle whereby a short range stream is selected when the turret nozzle is in the depressed position and a longer range stream is selected when the turret nozzle is elevated.

11. Apparatus as defined in claim 10, wherein means are provided to permit the turret nozzle operator to optionally over ride the stream control means and select the stream pattern desired.

References Cited in the file of this patent UNITED STATES PATENTS 2,484,942 Guise Oct. 18, 1949 2,698,665 Freeman Jan. 4. 1955 2,699,216 Allen Jan. 11, 1955

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