US2993650A - Fog fire nozzle - Google Patents

Description

July 25, 1961 H. w. BADBERG 2,993,650

FOG FIRE NOZZLE Filed June 11, 1959 2 Sheets-Sheet 1 FIG. I

llll

INVEN TOR.

HENRY W. BADBERG July 25, 1961 H. w. BADBERG 2,993,650

FOG FIRE NOZZLE Filed June 11, 1959 2 Sheets-Sheet 2 FIG. 5

INVENTOR.

HENRY W. BADBERG 2,993,650 FOG FIRE NOZZLE Henry W. Badherg, 2641 S. 15th St., Lincoln, Nebr. Filed June 11, 1959, Ser. No. 819,683 1 Claim. (Cl. 239-271) This invention relates to fire fighting nozzles adapted for use in combination with a fire hose or the like and more particularly to a fog producing nozzle.

A primary object of this invention is to provide a fog nozzle of the type described capable of penetrating walls, ceilings, floors, doors and the like to place the water fog closer to the fire for more effectively combating the fire.

A further object is to provide a fire fighting fog nozzle having a particular water outlet passage arrangement for providing a more effective fog pattern.

Another object is to provide a fog nozzle having, in combination, adjustable means whereby the operator may selectively control and direct the fog pattern.

Yet another object of the present invention is to provide a fog nozzle of the character described readily capable of being extended in length as the situation demands.

Still another object is to provide a fire fighting fog nozzle especially useful on enclosed fires such as fires in haystacks, rubbish piles, coal piles and other such compacted materials.

Another object of the present invention is to provide a fog nozzle of the character described which is economical of manufacture, simple and efiicient in operation and of rugged and durable construction.

Other and further objects and advantages of the invention will be understood from the following detailed description thereof.

FIG. 1 is a side elevational view of the assembled fog fire nozzle of this invention with some parts broken away and other parts shown in section for clarity of illustration;

FIG. 2 is an exploded side view of the component parts of the invention;

FIG. 3 is a side view on a reduced scale of the assembled nozzle in an extended operating position as attached to a fire hose and with the head penetrating a building wall, some parts being broken away for clarity of illustration;

FIG. 4 is a front elevational view on an enlargedscale of the head of the nozzle;

FIG. 5 is a longitudinal cross sectional view on an enlarged scale of the head taken along the line 5-5 of FIG. 4; and

FIG. 6 is a longitudinal cross sectional view on an enlarged scale of the head taken along the line 66 of FIG. 4.

While one embodiment of the invention is illustrated in the above-referred-to drawings, it is to be understood that they are merely for the purpose of illustration and that various changes in construction may be resorted to in the course of manufacture in order that the invention may be utilized to the best advantage according to circumstances which may arise, without in any manner departing from the spirit and intention of the device, which is to be limited only in accordance with the appended claims. And while there is stated the primary field of utility of the invention, it remains obvious that it may be employed in any other capacity wherein it may be found applicable.

The fog nozzle 10 of this invention generally comprises a head 12 positioned at the forward end of an elongated tubular shaft or tube 14, a shut-off valve 16 having its outlet side threadedly secured at the rearward end of the nited StatesPatent ice shaft 14, coupling "18 extended from the inlet side of the valve 16, a baffle sleeve 20 disposed about the forward end of the tube 14 and adapted to be slidably positioned therealong, brackets 22 and 24 extending from the tube 14 for supporting an auxiliary tubular shaft or tube 26 which later may be employed to extend the length of the nozzle assembly at desired times and a reducer coupling 28 which may be threaded into the coupling 18 at desired times to connect the nozzle to a conduit of larger diameter.

The head 12 has a cylindrical body portion 30 and a spear point 32 of conical shape formed integral with and extended from the forward end of the body portion 30.

The base 34 of the point 32 is of larger diameter than that of the body portion 30 and the peripheral surface of the base portion 34 is formed with flattened surfaces and appears in hexagonal shape in cross section or in front view as best seen in FIG. 4 for accepting a wrench thereon.

A threaded stem or nipple 36 of reduced diameter extends from the rear end of the body portion 30 and is secured in the internally threaded forward end 31 of the tubular tube 14.

An O-ring gasket 38 is disposed about the stem 36 and positioned between the opposed vertical faces of the rear end of the body portion 30 and the forward end of the tube 14 to provide a water tight seal upon tightening the connection between the head and tube.

The baffie sleeve 20 is of substantially a hollow cylindrical shape having a first bore 40 of a diameter complemental to the outer diameter of the shaft 14 and a second bore 42 of greater diameter and of substantial length extending inwardly from the forward end of the sleeve 20.

The second bore 42 is of sufficient diameter greater than the base 34 of the point 32 of the head 12 so as to freely pass thereover when the sleeve 20 is moved forwardly on the shaft. At this point it will be noted that the outer diameter of both the body portion 30 of the head 12 and the shaft 14 are equal whereby the sleeve 20 may be moved along the shaft from a position rearwardly of the head as shown in FIG. 4 to a position substantially covering the head 1'2 as shown in FIG. 1 or it can be moved further forwardly about the head whereby the second bore 42 extends beyond the base 34 of the point 32.

An annular recess 44 is provided adjacent the rearward end of the first bore 40. An O-ring gasket 46 is positioned in the recess 44 and engages against the surface of the shaft 14 and provides a watertight seal at the rearward end of the sleeve.

The exterior surface of the sleeve 20 is provided with a raised portion 48 extending thereabout and positioned intermediate the ends of the sleeve 20. The raised portion 48 serves as a hand grip to facilitate sliding of the sleeve along the shaft 14 manually. Thesurface of the grip may be knurled if desired. r

The rearward end of the tubular shaft 14 is exteriorly threaded for connection to the outlet side 50 of the shutoff valve 16. The valve 16 is provided with a hand lever 52 attached to an extended end of a valve stem 54 b welding 56 or the like.

The coupling 18 is secured in the inlet side 58 of the valve 16 and as shown in FIG. 3, through the coupling 18, the nozzle 10 is connected to a fire hose' 60.

The auxiliary tubular shaft 26 is of the same diametric dimensions as the shaft 14 and has an interiorly threaded forward end 61 similar to the forward end of the shaft.

14 as disclosed in FIG. 2.

The rearward end of the auxiliary shaft 26 has a reduced threaded stem 62 adapted to be received in the forward end of the shaft 14 at desired times.

The stem 62 has an O-ring gasket 64 positioned thereon providing a watertight seal between the facing surfaces of the respective ends of the shafts at times when they are joined.

When not in use, the auxiliary shaft 26 is held in storage position parallel to and spaced from the shaft 14, being supported in the brackets 22 and 24.

The brackets 22 and 24 are in the form of lugs or ears and the forwardmost bracket 22 is positioned on the shaft 14 at a point spaced rearwardly of the forward end of the shaft 14 and at a distance from the end to allow clearance for sufficient forward and rearward movement of the baffle sleeve 20 over or away from the head 12.

The bracket 22 extends outwardly from the shaft 14 at a right angle thereto and its lower end is secured to the surface of the shaft 14 by welding 66.

The bracket 22 further has an aperture 68 extending through the outer end thereof which is of a diameter complemental to the outside diameter of the shaft 26.

The rearward bracket 24 is fixed to the shaft 14 in a manner similar to the forward bracket 22 and is secured to the shaft by welding. 70 and at a point adjacent the threaded rearward end of the shaft 14.

The bracket 24 is also provided with an aperture 72 axially aligned with aperture 68 in the forward bracket 22. However, the aperture 72 is interiorly threaded and of a size to threadedly receive the stem 62 at the rear end of the auxiliary shaft 26.

Therefore to place the auxiliary shaft 26 in storage position the shaft is passed, stern first, through the aperture 68 in the forward bracket 22 and moved rearwardly so that the stem 62 may be threadedly engaged in the aperture 72 of the rearward bracket 24.

It will be seen that the head has a plurality of regularly spaced outlets 74 opening upon the surface thereof. With particular reference to FIGURES 4, and 6 wherein the interior construction of the head is shown in detail, it will be seen that the head has a central bore 76 opening upon the rearward end thereof and its forward end terminating at a point interiorly of the point 32. The bore 76 is of a diameter complemental to the inside diameters of either of the tubular shafts 14 or 26.

The outlets 74 provide communication from the bore 76 to the exterior through passageways 78 which later are disposed at various angles.

The'passageways can be separated into two distinct patterns or sets, one pattern being shown in FIG. 5 and the other pattern being shown in FIG. 6.

The passageways 78 of each pattern extend radially outwardly of the bore 76 at equally spaced distances therearound.

Each set of passageways 78 are staggered at a 45 angle from the axis of the bore 78 whereby each pattern is repeated four times.

The particular passageway patterns are important to the extent that they provide an improved fog producing nozzle. Water under pressure enters the bore 78 and is forced outwardly of the passages in small streams. The passageways are so inclined as to cause the intersection of the streams at points spaced from the surface of the head to further atomize the water producing a more effective and heat absorbent fog. The angles of the passageways are indicated in FIGURES 5 and 6 wherein the longitudinal centerline of the bore 76 is represented by line 80.

The passageway angles that I have found to be most effective are as follows, beginning with those disposed adjacent the rear end of the head and moving forwardly: A, forwardly at 45; B, rearwardly at 45; C, forwardly at 45"; D, outwardly at 90; E, forwardly at F, forwardly at 55; and in the second pattern shown in FIG- URE '6, G, forwardly at 55; H, rearwardly at 45; 1,

4 forwardly at 3', outwardly at 90; K, forwardly at 20; and L, forwardly at 70.

It is to be understood that each of the opposed passageways of each pattern are disposed in the respective angles indicated.

The nozzle is shown assembled for operation in FIG. 3 with a fire hose or other suitable fluid supply line connected to the coupling 18 of the nozzle. The valve lever 52 may then be actuated to pass fluid through the valve 16 into the tubular shafts 14 and 26 and out the passageways in the head 12. As shown, the head 12 has been manually driven through a wall or the like 200 such action facilitated by the conical shaped point 32, the fog being dispersed into the fire area which at times is concentrated between the outer and inner walls or the ceiling and roof of a building or the like.

In FIG. 3, the device is shown fully extended; that is, the auxiliary tubular shaft has been inserted between the forward end of shaft 14 and the head 12. If the extended length is not desired the valve may be shut down whereupon the head 12 may be unscrewed from the forward end of the auxiliary shaft 26, and the auxiliary shaft 26 unscrewed from the forward end of the shaft 14 whereby the head may then be screwed into the end of the shaft 14.

The auxiliary shaft 26 may then be passed through the aperture 68 in the forward storage bracket 22 of the main shaft 14- and its threaded end 62 screwed into the threaded aperture 72 of the rearward bracket 24 thereby locking it in its storage position preventing its loss and placing it in position for immediate use if extended length is required.

In the operation shown in FIG. 3, the baffie sleeve 20 is not employed. However, in use of the nozzle on open or accessible fires and the like the sleeve 20 may be manually moved along the shaft 14 or 26 and over the body portion of the head to provide forward directional control of the spray and fog. It is to be understood that the sleeve can be moved forward sufiiciently to allow the forward or second bore 42 thereof to pass over the base 34 of the point 32 and cover a substantial area about the point 32 of the head 12 to produce a substantially concentrated stream.

From the foregoing specification, it will become apparent that the invention disclosed will adequately accomplish the functions for which it has been designed and in an economical manner, and that its simplicity, accuracy, and ease of operation are such as to provide a relatively inexpensive device, considering what it will accomplish, and that it will find an important place in the art to which it appertains when once placed on the market.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore a more lengthy description is regarded as unnecessary.

Changes in shape, size and arrangement of details and parts such as come within the purview of the invention claimed may be resorted to in actual practice, if desired.

I claim:

In a fog producing fire hose nozzle, the combination which comprises an elongated tube, said tube being threaded externally on one end and internally in the opposite end, a sleeve slidably mounted on the tube, and a head including a perforated cylindrical body with an elongated perforated cone extended from one end and a threaded nipple extended from the opposite end, and formed to be received in the internally threaded end of said elongated tube, said sleeve being positioned whereby one end thereof provides a cover for some of the perforations of the cylindrical body, the perforations of the cylindrical body and cone being radially disposed and positioned in pairs, and the perforations of the pairs being inclined longitudinally whereby water sprayed from 6 a one perforation of a pair impinges upon water sprayed 2,246,797 Gaddes June 24, 1941 from the other perforation of the pair atomizing the wa- 2,647,800 Burnam et a1. Aug. 4, 1953 ter and producing fog. 2,792,257 Davis May 14, 1957 2,813,753 Roberts Nov. 19, 1957 References Clted 1n the file of this patent 5 UNITED STATES PATENTS FOREIGN PATENTS 1,644,290 Titcomb et a1. Oct. 4, 1927 4 ,1 Great Br pr. 1 1 7

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