US2884206A - Spray gun - Google Patents

Description

Apil 28, 1959 E .J, DUKES -SPRAY GUN Filed Sept. 27, 1957 INV ENT 0R.

frag/1W?" United States Patent SPRAY GUN Eugene J. Dukes, Cambria Heights, N.Y.

Application September 27, 1957, Serial No. '686,646 1 claim. (c1. 23a-530) This invention relates'to fire fighting apparatus and, more particularly, to a first aid fire extinguisher for suburban homes, farm, and boat use.

Of all of the fire extinguishers now available for use, no single one of such extinguishers are equally effective for Class A, B, and C types of fires. Therefore, the single extinguishers found in most of the installations that have such a lire extinguisher are effective, at the most, for only one or two of the three different classes of fires. Aside from being ineffective in the other one or two classes of fires, such extinguishers can in some instances spread the fire or give the occupants a false sense of security. It is therefore an object of the present invention to provide fire lighting apparatus which is extremely simple in construction, efficient in operation, and which will overcome the aforementioned diiculties.

Another object of the present invention is to provide a re gun which may be extended a substantial amount so as to remove the operator of the gun from lthe immediate vicinity of the fire so that direct application of the fire extinguishing pressure uid may be applied at the source of the fire without endangering the operator.

Still another object of the present invention is to provide a fire gun of the type described which can be readily manipulated, instantly controlled, and easily positioned for the most effective application of fire extinguishing fluid in all of the different classes of fires.

All of the foregoing and still further objects and advantages of this invention will become apparent from a study of the following specification, taken in connection with the accompanying drawing, wherein:

Figure 1 is a side elevational view, with parts broken away, of a lire gun made in accordance with the present invention in a normal retracted position; and

Figure 2 is a side elevational view, similar to Figure 1 but reduced in scale, showing the lire gun in an operative extended position, ready for use.

Referring now more in detail to the drawing, and more particularly to Figure 1 thereof, a fire gun 10 made in accordance with the present invention is shown in a partly retracted position, to include a hollow handle 12 having a central bore 13 with a threaded coupling 1S at one end and a head 18 at the opposite end. A plunger 17 having a piston 27 at one end is slidably supported within the hollow head 18 with the opposite end thereof extending outwardly through the rear end of the head and through an opening 23 in a trigger unit 20. This trigger 20 is pivotally connected to the handle 12 by means of a pivot pin 21 for controlling the longitudinal movement of the plunger through the cooperation thereof with an adjustable stop nut 24. In a normally closed position, the piston 27 blocks the flow of pressure fluid from the handle bore 13 through the outlet 28 when positioned in the intermediate position shown. However, in response to depression of the trigger 20, the plunger and piston are adapted to be moved rearwardly against the action of a compression spring 26 to permit com 2,884,206 Patented Apr. 28, 1959 ICC -the inner end of the extension piece 34 is adapted to abut against a similar mating seal 37 secured within the barrelv 30 when the piece is moved to the extended position 34a` shown to prevent the loss of any pressure fluidv that might otherwise escape between the slidable connection. A plurality of ball members 42 are supported within the fitting 32 for releasably engaging with an intermediate circumferential groove 40 in the extension piece 34 when it is in the retracted position shown. These balls 42 are operative to be yieldably released from seating engagement with the intermediate groove 32 to engage with the rear groove 39 of the extension piece when it is moved to the extended position shown, whereby a positive locking action in both of the extreme positions is attained. The front end of the extension piece 34 is also provided with a circumferential groove 44 for releasably engaging with ball members 45 seated within an arcuate nozzle piece 47 that also has a central longitudinal bore 48.

The outlet end of the nozzle piece 47 is provided with a plurality of circumferentially equally spaced apart discharge outlets 49 which direct the stream 50 of uid toward a common meeting point so that the streams impinge upon each other to produce a Very fine spray 52 which is very effective for the various types and classes of fires.

A pair of rearwardly diverging handles or hooks 54 are secured to a ring 55 that is mounted upon the arcuate nozzle piece 47 so that the hooks or handles 54 are disposed within a common plane with the longitudinal axis of the handle 12.

In actual use, the extension piece 34 may be fully extended to the operative position 34a shown in Figure 2, in which the gun is in an extended position 10a, whereupon the handle 12 may be connected to any suitable source of pressurized fire extinguishing uid, such as to an ordinary garden hose. Since all of the sliding joints are hermetically sealed, all such fluid is directed directly through the gun to the discharge ports 49 which are located suciently far away from the operator that a small fire can be extinguished without danger. If necessary, the handles or hooks 54 may be used to support the front end of the gun upon a stationary mounting so that the gun can be hung within a very hot area without the necessity of the operator having to remain, merely by adjusting the stop nut 24 to retain the plunger in the open position. These hooks can also be used to remove samples from within the tire, open and close doors, and other general uses requiring the operator to remain at a remote location.

While this invention has been described with particular reference to the construction shown in the drawing, it is to be understood that such is not to be construed as imparting limitations upon the invention, which is best defined by the claim appended hereto.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A spray gun comprising, in combination, a hollow handle having a hose fitting at one end and a hollow angularly inclined head at the opposite end, one end of said head dening an outlet, a barrel secured at one end to said outlet, a tubular extension having one end 3 adjustably carried lby said barrel, a discharge nozzle associated with the opposite end of lsaid extension, flow control means associated with said handle for controlling the oW of pressure fluid through said nozzle, said flow control means comprising a plunger slidably supported within said head, said plunger having a piston a't one end controlling communication between said hollow handle and said outlet, the opposite end of said plunger extending outwardly through the opposite end of said head, a trigger pivotally supported upon said -handle for `effecting movement of said plunger, said extension being movable between a normally retracted position within said barrel and an adjusted extended position relative thereto, hermetical seals acting between said barrel and said extension preventing the loss of pressurized uid therefrom, and said nozzle 'comprising an arcuate section rotatably secured to said extension, and a pair of rearwardly diverging hooks secured at diametrically opposite 4 sides of said arcuate section lying in a plane common to the plane of -said handle.

References Cited in the ile of this patent UNITED STATES PATENTS 1,031,903 Anderson July 9, 1912 1,205,131 Beck Nov. 14, 1916 1,209,008 Messina Dec. 19, 1916 2,257,585 Auvil Sept. 30, 1941 2,289,352 Ensminger July 14, 1942 2,460,545 Spreng Feb. l, 1949 2,532,711 Goddard Dec. 5, 1950 2,567,176 Ballard Sept. 11, 1951 2,657,098 Strahm'an A Oct. 27, 1953 2,776,168 Schmeda Jan. 1, 1957 FOREIGN PATENTS 1,087,714 France Aug. 25, 1954

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