US1706532A - Liquid gun - Google Patents

Description

lMan:h.26, 1929. c. F. LEFEVER LIQUID GUN Filed Deo. 5, 1927 w u n 3 j oof M 6 w 6 Vv M 2 WM 7 7^ a, 3M, 2 A

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Application filed December 5, i927, Serial No. 237,855,

The invention relates to liquid discharging guns and refers moreparticularly to that type known as ma azine guns or repeaters. objects the discharge rllhe invention as for one of its provision of a gun which will the same amount of liquid each time it is operated. The invention has for another of its objects to so construct the gun that its parts rihe invention ma be readily assembled. further consists in the novel Figure 3 vation Figure 4 is is a similar view, partly in elea cross section on the line 4 4 of Figure 2; r

Figure 5 is a perspective view of a portion of the ber closure of the gun frame mem- Figures 6 and 7 are sectional views at right angles to each other, showing the means for position.

securing the closure in closed yThe gun illustrated in the present instance is a liquid pistol in which 1 is a frame member formed of a sheet metal stampingy having complementary sections abutting against each other and forming a casing and comprising a trigger guard 2, the casing the false barrel 3, the handle 4 and the closure 5 for the rear end of the false barrel and the upper portion of the rear side of the handle. This closure 1s connected to the handle by the adapted to be secured to the pivot 6 and is alse barrel by the latch mechanism 7. This mechanism comprises the transversely movable bolt 8 which is slidably mounted in the ear 9 upon the closure and the ear 10 upon the bracket 11, which latter is secured to the 12 is a coil spring encircling the closure.

bolt and abutting the ear 10 and the transverse arms 13 upon the bolt.

The false barrel at one side of its rear end portion has the opening 14 for engagement with the arms and the slot 15 extends from the rear end of the false barrel to the opening, this slot having of the bolt.

a width suilicient for the passage 16 is an assembly insertable into and re. 55 movable from the frame member when the closure 5 is in open position. This assembly, in fact, comprises two units. 011e .unit is formed of the liquid reservoir 17, which is engageabl'e in the false barrel 3, the disdo char e chamber 18 within the front lower portion of the reservoir 17 and the trigger 19 which depends from the rear end portion of the reservoir and is adapted to extend into the space .formed by the trigger guard 2. The reservoir 17 has at its rear' end the filler neck 20 through which the liquid, such as water, may be poured, this neck being closed as by means of the cork 21. The discharge chamber has its front end pro- T0 vided with the restricted discharge opening 22 and its rear end opening into the reservoir, the frame member 1 being provided with an opening 23 to ermit water being discharged throughl t e restricted opening 22 75 from the pistol.

The second unit of the assembly comprises the plunger 24 within the discharge chamber 18 and the plunger rod 25 extending rearwardly through the reservoir 17 and adapted S0 to abut at its rear end the closure 5. This second unit also includes the closure 26 surrounding the rod and adapted to tightly close the opening in the rear end of the reservoir through which the rod passes, ythe collar 27 encirclin the rod near its rear end and the coil spring 28 encircling the rod and abutting the closure 26 and the collar 27. 29 is an enlargement upon the rod for engaging the closure and 30 is a pin extending through 90 the rod and enga 'ng the collar 27 or holding the parts rom disengarement. The closure 26 has the cylindrical fiaange 26' surrounding the rod and preventing the liquid from escaping along the rod. The plunger 24 is slidably mounted upon the front end of the rod and has a limited longitudinal movement relative thereto, the forward movement being limited by the turned collar 31 and the rearward movement being limited by the shoulder 32. The front end of this rod has a passage for liquid from the reservoir to the discharge chamber in advance of the plunger, this passage including the transverse passageway 33 and the axial passageway 34 in105 the rod and connecting into each other.

With this construction the plunger and plunger rod unit is first secured to the reservoir and discharge chamber unit with the plunger located in the discharge chamber, the rod extending rearwardly through the reservoir and the closure upon the rod tightly fitting the flange surrounding the opening upon the reservoir through 'which the rod. passes. Liquid, such as Water, is then poured through the iiller neck of the reservoir to fill the latter after which the cork .is inserted into the filler neck. This unit assembly is then inserted into the framemember and the frame member closure is locked in closed position, at which time the pistol is ready for use. By pulling the trigger rearwardly any liquid which may .have entered the discharge chamber in advance of the plunger rod will be forced through the restricted opening in the front end of the discharge chamber. Then upon relieving the pressure exerted u on the trigger the coil spring encircling t erear end portion of the plunger rod will force the reservoir and discharge chamber unit forwardly, at which time the plunger moves forwardly relative to the plunger rod. to uncover the passage in the plunger rod and allow liquid to be drawn from the reservoir into the discharge chamber in advance of the plunger. Then upon again pulling the trigger, the liquid is forced through the discharge opening, the plunger during the initial rearward movement of the trigger having been moved back upon the plunger rod to close the passage therein. The construction is such that substantially the same amount of liquid is drawn into and discharged from the discharge chamberA in advance of the plunger, each time the reservoir and discharge chamber unit is reciprocated.

What I claim as my invention is:

1. In a liquid gun, the combination with a liquid reservoir, of a discharge chamber, a plunger within said chamber, said plunger and chamber being relatively movable to force from said chamber liquid in advance of said plunger, and a plunger rod having a passage from said reservoir to saidY chamber in advance of said plunger, said plunger and] rod being relatively'movable to control the passa e.

2. n a liquid gun, the combination with a liquid reservoir of a chamber having its front end provided with a restricted discharge opening and its rear end openin into said reservoir, a plunger within said c amber, said plunger and chamber being relatively movable to force from said chamber liquid in advance of said plunger, a plunger rod extending through the'rear end of said chamber and provided at its front end with a passage for the liquid from said reservoir to said chamber in advance of said plunger, said plunger being movable longitudinally of said rod to control the passage.

3. In a liquid gun, the combination with a arcanes casing, of a unit carried by said casing and chamber the liquid in advance of said plunger.

'4. In a liquid gun, the combination with a casing, of a unit movable relative thereto, said unit including a reservoir and a discharge chamber, a plunger within said chamber, and a plunger rod stationary relative to said casing and providing a passa e for the liquid from said reservolr to sai chamber in advance of said plunger, saidv plunger having a limited longitudinal movement relative to said rod to control the passacre and to force from said chamber liquid in a Vance of said plunger upon movement of said'unit.

5. In a liquid gun, the combination with a casing, of an assembly insertable into and removable from said casing, said assembly including a reservoir, and a discharge chamber formin a unit, a plunger within said chamber and a plunger rod extending through said reservoir and connected to said plunger, said plunger and rod being removable from said unit.

6. In a liquid gun, the combination with a l member forming a casing and aA trigger guard, sa1d caslng includln a movable closure at the rear end of sai member, of

a unit assembly insertable through the rear` 'able from said'rst mentioned unit and including a plunger within said chamber, a plunger rod connected to said plunger and extending rearwardly through said reservoir and adapted to abut the rear end of said casing, a closure for the opening in said reservoir through which said` rod extends, a coil spring encircling said rod in rear of said closure, anda collar upon said rod for engaging the rear end of said spring.

8. In a liquid gun, the combination with a casing having a movable closure, of an assemb y slidably mounted in said casing including a second y casing having a portion constituting a reservoir for a liquid and having another portion forming a discharge chamber, and means for actuating said a'ssembly to discharge the liquid in said chamber, said assembly being insertable in and removable from said Erst mentioned casing through said `closure as a unit.

9. In a liquid gun, the combination With a casing, o a reservoir and a discharge chamber associated with said casing, a rod adapted to extend into said chamber having a passage therein establishing communication between said reservoir and chamber, and a 'plunger arranged upon said rod operable to discharge fluid from said chamber and to control the iow of Huid through said passage.

10. In a .liquid gun, the combination with a casino', of a discharge chamber sli'dably mounted Within said casing, a reservoir communicating with said chamber and a plunger arranged within and movable rel- 20 ative to said chamber operable to discharge liquid therefrom and to control communication between the reservoir and chamber.

In testimony whereofI afiix my signature.

CHARLES F. LEFEVRE.

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