US2687715A - Dual air rifle - Google Patents

Description

' E. M. VARONA EI'AL Aug. 31, 1954 DUAL AIR RIFLE 3 Sheets-Sheet 1 Filed Aug. 15, 1950 A1. l arafia E. M. VARONA ETAL Aug. 31, 1954 DUAL AIR RIFLE Filed Aug. 15, 1950 w m faZa Zzo/ Z Vaf'ana Osc'arB. Varana INVENTORS Zea Olivia .j/aronaz h h. KN \N \.E..-.s mm

ATTORNEYS E. 'M. VARONA ETAL Aug. 31, 1954 az tzs.

Filed Aug. 15, 1950 S o R 5 5 d, 5 T 2 Z Z 2 a moan rmo 0 wag 2r m w aw m ,0 00 2 V a w y a J a f ATTD R N EYS v Patented Aug. 31, 1954 DUAL AIR RIFLE,

Eulalio M. Varona, B. Varona, Manila,

Oscar B. Verona, Republic of the Philippines and Olivia Application August 15, 1950, Serial No. 179,476

1 Claim.

This invention relates to guns, and more particularly to a gun or rifle from which the projectiles are propelled by air under pressure.

The object of the invention is to provide a rifle which i constructed so that air under pressure will be delivered behind projectiles to propel the latter as desired.

Another object of the invention is to provide an air rifle which will propel projectiles under great force.

A further object of the invention is to provide an air rifle which is extremely simple and inexpensive to manufacture. I

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this application, and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is a side elevational view of the air rifle according to the present invention;

Figure 2 is a top plan View of the air rifle;

Figure 3.is an enlarged fragmentary bottom plan view of the rifle, with the stock removed;

Figure 4 is a top plan View of the stock;

Figure 5 is an enlargedsectional View taken on the line 5-5 of Figure 2;

Figure 6 is a vertical sectional view of the breech block with the loading member retracted; Figure '7 is a sectional view taken on the line I--1 of Figure 5;

Figure 8 is a sectional view taken on the line 8-8 of Figure 6';

Figure 9 is an enlarged sectional view taken on the line 9-9 of Figure 2;

Figure 10 is an enlarged sectional View taken on the line Ill-I 0 of Figure 9;

Figure 11 is a rear end elevational view of the rifle with the stock removed; I

Figure 12 is a sectional view taken on the line l2-l2 of Figure 9.

Figure 13 is a transverse sectional view taken through the rifle showing the reservoirs, valves and loading member and with the loading member closing oil both air reservoirs, the corresponding position of the indicating arrow, locking screw and slot being shown diagrammatically looking from the front towards the rear of the rifle.

Figure 14 is a view similar to Figure 13, but showing the position of the parts when one reservoir is in communication with the projectile barrel.

Figure 15 is a view similar to Figure 14, but showing the position of the parts when the other reservoir chamber is in communication with the projectile barrel.

- spring-pressed valve 28 is arranged in each Figure 16 is a view similar to Figure 13, but showing the position of the parts when both reservoir chambers are in communication with the projectile barrel.

Referring in detail to the drawings, the numeral l0 designates a compression cylinder in which is slidably arranged a pump-plunger I I, Figure 5. The plunger I I includes an elongated stem [2 and a flared collar I3. A threaded stud bolt I4 provided with a knurled head I5 is arranged in engagement with the cylinder it] and the bolt I4 can be unscrewed. to permit air to bleed from the cylinder as desired. Further, the bolt M can be removed from the cylinder II] to ensure that the rifie will not be used by a stranger.

A tubular projectile barrel I6 is supported on the top of the cylinder I0 and is secured thereto, there being a breech block I! positioned to the rear of the barrel I6 and communicating with the latter. Suitable front and rear sights I8 and I9 are supported on the projectile barrel I6, and the breech block I1 is provided with an opening 20 through which are inserted the projectiles 2I that are to be discharged.

A loading member 22 is slidably and rotatably arranged in the breech block I l and projects out of the rear thereof, there being a knob 23 for moving the loading member 22. A screw 24 projects from the loading member 22, and this screw is adapted to be projected through a slot in the breech block l1, and this slot include an arcuate portion 25 and an elongated or straight portion 3. In Figures 13, 14, 15 and 16 it will be seen that the screw 24 is in four different positions of the arcuate portion 25 of the slot when the loading member is moved to control the flow of air from a pair of air reservoir chambers 26 and 21. The screw 24 move rearwardly through the straight portion 3 of the slot to the position shown in Figure 6 when the gun is to be loaded with projectiles 2 ly, the loading member 22 is the screw 24 from the arcuate portion 25 of the slot so that the screw 24 can move through the straight portion 3 of the slot.

The pair of tubular reservoir chambers 26 and 21 are arranged to the rear of the cylinder I E]. A of the chambers 26 and 2'! and the valves 23 permit compressed air to pass from the cylinder Ill to the reservoir chambers, but prevent air from leaving the chambers and returning to the cylinder Ill. The rear ends of the chambers 26 and 21 have the letters L and R marked thereon, and the knob 23 for moving the loading member 22 has an arrow 29 marked thereon and this arrow, Figure 11, serves to indicate the chamber that is supplying the air to the projectile barrel 16. The chamber 26 has communicating therewith an inclined passageway 30, and the chamber 21 also has communicating therewith an inclined passageway 3 I. A valve 32 is arranged in each of the chambers 2t and 21 and a spring 33' normally maintains the. heads 3'4 of these valves in bridging or closing relation with respect to the passageways and 3|. Spaced apertures and 36 register with the passageways 30 and 3| to permit flow of air from the chambers 26 and 21 through the breech block I1 and into the projectile barrel It.

A stock 31' is detachably secured to a block 38 by a headed screw 39, the block 38: being welded or otherwise secured to the under surface of the chambers 26 and 21.

A pair of spaced open-ended casings 4'0 and M are positioned below the chambers 20 and 21 and are secured thereto, and a pair of hammers 42 and 4 3 are slidably arranged in the pair of casings 4.0 and H. hammer, however, is provided with a slot 2 into which projects a portion 3 of an L-shaped arm M, and each arm is pivotally connected by a pin as to. the breech block 111. The other end portion 26 of each of the-arms M is in engagement with the complemental stem llof the valve 32 and upon pivotal movement of. the arms M.- in a clockwise direction, the valve head, 34 will be moved downwardly to permit air i to flow out from the chambers 25 and 2'1" to propel the projectiles.

For causing pivotal movement of these arms M, a single trigger 43 surrounded by a trigger guard- 43 is provided. Secured to the upper end of the trigger 43 by a rivet is a pair of spaced fingers hi, and these fingers engage with slots 53 which are formed in the bottom of each of the hammers A2 and 63.. Thus, until the trigger 48 is pulled backward, the fingers 5! are urged. upwardly into engagement with the slots 53 by spring 54, and the hammers are not able to movebackward.

A coil spring 55 is positioned in each of the casings l0: and, ill for normally urging. the. hammers backward, and the tension of these coil springs can be varied as. desired. Thus, a shank 5% slidably projects out ofv the front end of each of the casings-40 and ll and these shanks abut the coil springs. A stud ii! is secured to each of the shanks- 55 and this stud is adapted to be positioned in one of a plurality of spaced slot 58 which are arranged in. each casing whereby the tension of the coil springs 55: can be adjusted as desired. By varying the tension of the coil springs in the aforementioned manner, the inter valv between squeezing the trigger and discharging, the projectiles can be set or varied as desired.

In use, the ride may be pointed downwardlyand the plunger H reciprocated to build up air pressure in the chambers 25 and 2-1. One or more projectiles 21 may be loaded through the opening 2b into the breech block I'l when the loading member 22 isin its rear or uncooked position. Then, the loading. memberv 22 is set by means of the knob. 23 so that the compressed air will come from either of the chambers 26 and 21 or from both. The hammers 42 and 43. are pushed. inwardly into the casings 4t and N and the rifle is. aimed. Then when the user squeezes the trigger it, thefingersfil will bemoved out of engagement with. the grooves 53 in the hammer did 4 and the springs 55 will quickly force the hammers rearwardly. The fingers 5| have their upper front edges engaging the portions of the hammers 42 and 43 contiguous to the slots 53 so that manual pressure on the trigger 48 moves the front ends of the fingers 51 out of engagement with the knife edges on the hammer 42 and 43. This rearward movement of the hammers will cause the arms 44 to pivot to thereby depress and open the valves 32 whereby air will pass from the chambers 26 and 21 through the respective passageways into the breech block I! to propel the projectiles out of the barrel 16.

As many embodiments may be made of this inventive concept, and as many modifications may be made in the embodiment hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

I claim:

An air rifie comprising a compression cylinder, a pump-plunger slidably arranged in said cylinder, a-pair of reservoir chambers arranged to the rear of said cylinder for receiving compressed air from the latter, a valve positioned in each of said chambers for permitting air to enter said chambers and for preventing air from passing from said chambers to said cylinder, a projectile barrel arranged above said cylinder and supported by the latter, a breech block arranged to the rear of said cylinder and communicating with the projectile barrel, there being an opening in said breech block for inserting projectiles, there being an inclined passageway arranged in each of said chamber for the egress therethrough of compressed air, a pair of oppositely disposed apertures insaid projectile barrel communicating with the passageways in said chambers, a leading member slidably and rotatably positioned insaid projectile barrel whereby said projectiles. are adapted to be moved into said projectile barrel, a valve normally closing each of said passageways, a stock arranged below said cylinder and operatively connected tosaid chambers, a pair of open-ended casings positionedbelow said chambers and secured thereto above said stock, a hammer provided with a slot slidably arranged in each of said casings, a pair of fingers for preventing rearward movement of. said hammers, a coil spring normally urging said hammers rearwardly in said casings, a pair of L-shaped arms pivotally connected to said breech block and each having an end portion projecting through the slot in the hammer therebelow, the other end portion of each of said arms adapted to'open the valves that normally close the passageways in said chambersupon pivotal movement of said arms, and a trigger carried by said stock for freeing said fingers from said hammers to cause said hammers to be moved rearwardly whereby said valves will be opened and said projectiles will be propelled through said barrel.

References Cited: in the file of this patent UNITED STATES PATENTS

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