US1606961A - Compressed-gas shooting arm - Google Patents

Description

l F. RocRQY CHPRESSED GAS SHOOTING ARMI Nov. 16 1926.

' Filedqan. 11j 192e 2 Sheets-Sheet 1 un. Y w,

i FERNAND Jaocnor,` 0F ROANNE, FRANCE.

coivnnnssnnens sHooTING Ani/L Application filed January 11, 192e, serial No. 80,623, and in France March 2e, 1925.A v

The objectfoffmy present inventioniis to provide certain new and useful improvements in shooting arms of the type wherein the expansion of gas compressed in a. reservoir is used for thepropelling of the yprojectile. My improvements consist more par-H ticularly of an automaticopening and clos' ingdevice for the reservoir, whereby a sud-A den discharge of compressed'gas will be' prof] duced'by its own pressure andan improved loading device, whereby the: projectile may be'inserted ntothe barrel ofthe arm at the pointV wherel gas is discharged from the reservoir.l v i" j Myjimproved devices 'are applicable to various shootingl arms such as vriles,jguns,

pistols,l ordnance mechanical guns and the' like.

V By way of example "I have .illustrated in the accompanying drawings an` improvedy rifle of my inventionoperatingwith ycom`Y pressed air produced byVA a compressing pump 4provided on the arm and yactuated manually, the rifle/being placed horizontally inzshooting position" 'ff' Fig.' 1v is-an elevationV of the` arm. Fig. v2lis aiV plan view thereof. l

of' the' barrel.l l

Fg;`4 is an' enlarged 4sectional"view ofthe" parts'of the arm shown"in,Fig."3,` to'wit:V

the compressed "airv reservoir with its internal opening and closing dev1ce,the loading device 'for'the insertion of the projectile into the barrel and a'fragment of the compressingjpump.l this'view the loader closes the projectileinlet.

Figc is an enlarged view of the longitudinal section 'shown in of the barrel of the arm. i In" this viewl the loader uncoversthefprojectile inlet and the projectile may be inserted into the barrel.

FigQG is a ragmental Vcross sectionalV view of the compressed air reservoir on 'a verticalplane A A Fig. 4. The armcomprisesfa butt-endl'and a recessed stock 2, the air compressing pump arranged in the, recess of the stock with its piston 3 and piston-rod 4. The compressed air reservoir 5 is a cylindrical tube placed tangentially to the compressing pump and connected thereto, through channels 6' and 7 the channel 6 being normally closed by a Valve 8. The reservoir 5 is closed at one end near the cock 9 by means of a valve 10 having a movable head 11 opened by the shock of the cockl to open thecommunication `between the portion l12012 the reservoir and the outery atmosphere through channels 13 and 14 and'ports 15." l f i t Slidably arrangedin longitudinal'- direction within the reservoir is a`part16 termedshuttingpiston, one end' 'of which carries a piston`17 rand the other a swelling or bead Y vabling air to enterthe compartment 19 at` the samer time vpreventing air from V being discharged therefromatthis end;

A spring of suitable strength resting on'a stationary annular base `26 has tendency to urge the shuttingpiston towards the barrel. The swellingor .bead 18ct the shut!A ting piston' has'onfits outer periphery a Y spiderthe arms27 offwhich rest `on the innenwallfo'f ythe [reservoir and serve to! Figf 'is alongitudinal section of vthe arm' on a vertical planel passing'through Ythe airis guide the VshuttingV piston and hold the same well"centeredY in the reservoir@ Tli'e'body of'- cylindrical tube, secured by its part32` to" the tube of the reservoir so that the axes offb'oth will be alined and the end of the part y32f'of the barrel rest packing 33' ofthe loader 30.

The loader iis made generally in the shape yon the V annular ofa hollow cylinder the inner diameter of? y which, is equaltothat-of thebarrel.

The

rear part' thereof has a cylindrical swelling Y 34 which receives vthe annular packing 33V.

Said rear part of the loader rests on the packing .28v of the shutting piston of the reservoir and is adapted yto longitudinally slide upon pulling a knob or button 35 rearwardly in a cylindrical recess 36 'at the base of thebarrel, whilst the swelling- 34 will slide within the reservoir so as to uncover the inlet 37 for the projectile 38 and enable lill the latterl to bey inserted into the recess 36 of the barrel. ln this operation the rear part 'ot the loader which rests on the packing 28 of the shutting piston of the reser voir, causes said shutting piston to move rearwardly against the action of the spring 25, the shutting piston and loader then assuming the positions shown inFig. 5. Upon the release of the'pulling knob 35' said partswill be brought back by the expansion of the spring 25 to their initial positions shownin a and the projectile will enter the interior of the loader. Said device will secure the tightness of the res'eiiioir.A

The operation of the arm may thus be eX- plaine'd as follows: n

The cock 9 will be raised, vthe reservoir being then tightly closed. The knob 85 of the loader kwill be moved rearwardly so Vas to uncover the' inlet 37 for the projectile' and the latter will ybe inserted. The reservoir will be set under pressure by means of the air pump, air entering ther compartment 12, then the compartment 19 raising the ball 211 which will be forced back upon its seat by the spring 21 after each admission of air. Y

If the compression pump is not operated, the compartments 12 and 19E of the reservoir will not be inconnnuni'cation, but the pressure ofair is equal in both compartments. .lf this pressure is deemed to be sufficient for shooting, the arm will be ready for shooting.

lf it is desired to shoot, the trigger 39 will be actuated as in ordinary arms, whereupon the cock 9 will strike thejmovablei head 11, whereby theV valve 10 will be opened to aliow ttf-escape of air eontainedrinthe compartinentV 12 of the reservoir inte the:V outer atmosphere through channels 13 and 14' and ports 15. Owing to the vacuum thus produced in the compartment12 and the pres-- sure in the compartmentY 19, the shutting piston will be suddenly forced backwardly. Then the opening of the loader 30 will be uncovered land compressed air from the'compartment 19 will suddenly enter said loader and afterwards the barrel to force the projectile forwardly for shooting. i

When the spring 25 will force the shutting-piston 16 forwardly to its initial position, the swelling 18 thereof closing theV opening of the loader. Upon raising the cock, the reservoir will be ready for char ing. Y Y

It will be obvious that the hand compressing `pump may be replaced by a tube containing one or more charges of compressed gas. Likewise for long range arms such as mechanical guns, ordnance aiiydvthe like. l may use any gas supplying device such as a compressor, highly compressed gas containing flasks and the like, such `devices' being connected to the reservoir Iofthe arm by any suitable conduit 'provided if necessary with'a pressure reducing device and a pressure gauge, such devicesfbeing made integral with the'r arms or independent from the same..

Having nofw, fully described my said invention, vwhatf` claim and desire to securev 2. 'Ina compressed gas shooting arm, the combination with the. barrel and a com pressedV gas reservoir, and an opening vin said reservoir discharging int the barrel, a shutting piston slidably arranged within said reservoir and dividing the saine; into twocompartments, a valve closing one' of said compartments towards the coc-k of the arm, aV cock adapted to strike said valve to connect said compartment to the outer natmospheresuitab'le springs cooperating with said shutting piston and'valve to move them automatically back Vto their initial positions, a loader adapted to slide longitudinally within a portion of the barrel at the dis- Y charge end of said reservoir, a knob arranged outside the arm for operating said loader and inserting a projectile into the barrel at the discharge end Iof the reservoir,

and means for moving theV loader automatically back to its initial position, substantially as set forth. i Y

In testimony whereof I have hereunto set my hand.

FERNAND Rooiaor. [1.. 8.]

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