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Патент USA US2129875

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Sept. 13, 1938.
H. RosT
Filed llay 25, 1935
2 sheets-sheet -1 '
-Ü,maM. N
Heu/gva /fQs'Í'
Sept. l13, 1938.
H. Ros-r
Filed Hay 25, 1935
`2 Sheets-Sheet 2
g5 84
`/ / /
Pafemeldl‘sept. 13, 193s
im'riziìi'rV oFFicE
.Helge Rost, Mexico, D. F., Mexico
Application -May 25, 1935, Serial No. 23,412
21 claims.
gle with the oxygen-liberating compound.
The present invention relates to new and use
ful improvements in firearms of the so-called
powderless type and has reference as Well to a
particular ammunition used in connection there
An object of this invention is to provide a new
lexplosive charge for firearms of the character
hereinafter described, which will have consider
ably higher explosive powers than ordinary gun
10 powder and the like, and which can be manu
-factured more cheaply than 'other types of eX
plosives used for the same purpose.
>Another object of this invention is to` provide
an explosive charge of this character, which will
15 be unaffected by shock, friction and temperature,
and which will not deteriorate when stored for
an indefinite period.
Another object of this invention is the pro
vision of an explosive charge which will be free
20 from all danger of self-ignition.
Another object of the invention is to provide a
new type of cartridge which will contain an ex- y
plosive charge of the character hereinafter de
scribed and which will consequently have all of
25 the advantages inherent in the particular charge
used therein.
Still another object of this invention is to pro,
vide a construction for a firearm which is par
_ticularly adapted foruse in connection with myy
this construction ignition may be produced by
electric sparks or by a suiiicient compression of
the air and the gaseous fuel, while the tempera
ture is raised to a point where spontaneous com
bustion will occur.
Instead of disposing the oxygen-liberating com
pou'nd within the cartridge and injecting the gas
oline from the outside, both the oxygen-liberat
ing compound and the gasoline may be disposed 10
in separate' compartments inside the cartridge.
Ignition may be producedby any known means.
Thus, in the case where both explosive substances
are disposed within the cartridge, ignition can
be produced by means of the usual firing pin l5
striking a fuse cap provided on the bottom of the
_ shell.
' According to this invention the combustion of
the explosive charge is greatly accelerated due
to the oxygen-liberating compound which, under 20
pressure, will decompose rapidly at raised tem
peratures, liberating the vital oxygen. The lat
ter together with the oxygen contained in the
compressed air accelerates the combustion of the - `
Another advantage of the present invention re
sides in the fact that complete combustion takes
place inside the gun barrel when a shot „is fired.
It is a well known fact that ordinarily a burst of
flames issues forth from the mouth of _the gun 30
30 new type of cartridge.
I accomplish these objects by means of the . barrel when a shot is fired because the un
burnt gases, when expelled from the gun absorb
present invention which comprises brieñy, an ex
plosive charge consisting of two chemical sub
stances which are segregated up to the moment
35 the gun is ñred, at which time they are com
bined to eñect an -explosion. ' 'I'he explosive
charge according to the present invention con
oxygen from the surrounding atmosphere. How
ever, when using cartridges in accordance with
the present invention, the burst of flames and the 35
attendant flash of light will be lacking complete
ly because comple‘te combustion will take place
inside the gun barrel. The flashes of light ordi
sists, on thev one ghand, of a hydrocarbon or its
derivatives such asgasoline, and‘on the'other narily produced when a shot is -fired can be
40 hand, of an oxygen-liberating compound, as for' seen from a great distance, particularly at night
instance chlorate of potassium. By varying the ' time. This constitutes a grave strategic disad
vantage in that the flashes of light betray the
proportions of these two ingredients constitut
ing4 the explosive charge, varying degrees of the position of the gun. All such danger is over
Y „come by the present invention.
speed of combustion may be obtained.'
The present invention may be practiced either
45 "According to the present invention the gaso
line is injected into a compartment of .the gun in connection with the type of guns now in use
barrel forming a combustion chamber and the or with the special gun construction described
oxygen-liberating compound is either placed in in the following. Best results will be obtained
the combustion chamber or disposed inside a by means of this new gun which will not only
50 cartridge. In the latter case, provision is made greatly increase the range of fire and give greater
penetrating force to the projectiles, but also sub
for ready admission of the gasoline to the oxy
stantially reduce the costof operation of the
gen-liberating‘compound which may be» accom
plished by perforating the cartridge. Upon com
pression of the air and atomization of the fuel,
55 the fuel-air mixture will penetrate into and min
40 l
The following table listing the energies avail
able in the various types of explosives .will convey 55
some idea of the great superiority of the ammuni
and against the interior of the cylinder 3 by a
tion of the present invention.
movable piston I9. Piston rod 2l serves for ac
B. t. u. per pound _ tuating the piston i9 inside the cylinder 3.l Pis
Black powder ________________________ __ 1,230
ton rings 20 are provided on the piston I9 to pre
Pure nitrocellulose ____________________ __ 2,000
vent air or gas from passing from the combus
Solar oils ____________________________ __ 18,000
tion chamber 9 to the interior of the cylinder 3.
Kerosene ____________________________ __ 19,000
Washers 22, 26 and 2l are solidly attached to the
Gasoline _____________________________ __ 20,000
rod 2l and serve for guiding the same inside the
Acetylene ________________________ _*___-_ 21,500
cylinder 3. AThe latter is provided with a slot 25'
permitting back and forth movement of the l0
handle 23 which is integrally attached to a
washer 22 and serves for actuating the piston I9
Within.the casing 3. Washer 22 also comprises
The great advantages of this invention will be
still more apparent when considering the fact
_that chlorates for explosive purposes are much
cheaper than I other explosives (the cost of
chlorate being about half of that of dynamite)
a downward projection 2d provided with an aper
ture 25 which 'is adapted to engage a lock spring
transported with incomparably greater safety
30 attached to the cylinder 3.
than ordinary explosives generally employed in
the armament industries today. Hydrocarbons,
23 is moved to the right so that washer 22 and
15 and that pure chlorate can be manufactured and
on the other hand, are available everywhere at
low cost.V
The present invention is applicable to all types
of ammunition and firearms. It may be used in
connection with simple, hand-operated single
shot guns with the same advantages as in the
case of automatic rapid firing guns and ord
nances of every caliber.
'I'he recoil energy developed when the gun is
fired may be utilized for feeding ammunition and
f'uel, or for compressing air, cooling the explosion
39 chamber and for similar purposes. Various
spring arrangements, as well as hydraulic and
pneumatic arrangements may also be combined
with the present invention.
Several embodiments of my invention are illus
35 trated in the accompanying drawings in which
Figure 1 is a vertical sectional view through
the breech of a gun which is provided with a com
bustion chamber and a spark plug;
Figure 2 is a vertical sectional view through'
40 the breech of a similar gun construction modi
fled to include a ñring pin;
Figure 3 is a bottom plan view of the type of
ammunition shown in Figure l;
Figure 4 is a bottom plan view of the type of
ammunition shown inv Figure 2;
_Figure 51s a view partly in elevation and partly`
in section of one form of cartridge according to
the present invention;
Figures 6, 7 and 8 are sectional views of modi
50 ñed forms of the cartridge according to the
Figure 9 is a diagrammatic view of a gun and
cartridge with cooling system in accordance with
this invention.
The gun
In the drawings, I denotes a gun barrel at
tached to the casing 315 which is provided with a
`loading chamber 5. The latter has av loading
When the handle
extension 213 take the- position 3i indicated in
dotted lines, lock spring 30 will lock the exten
sion 2d, and with it the piston I9 to the cylinder 20
3, so that continued movement of the-handle 23
to the right will result in a joint movement of the
piston I9 and the movable cylinder 3 interlocked
therewith. 33-designates the furthest righthand
position to which the cylinder 3 and the piston I9 25.
may be moved. In this position the loading
aperture 2 of the loading chamber 5 will be fully
exposed. Cylinder 3 is provided with an internal
cylinder head 28 with which is associated pres
sure spring 29 exerting a forward pressure cn the
conjunction with the preliminary independent
backward movement of the piston I9 will assure
suñicient absorption of the recoil shock to pro
duce smooth operation of the gun. 'I'he loading
aperture 2 may be kept open by means of a lock 40
ing device (not shown) retaining the cylinder 3
in its extreme righthand position. No such lock-'
ing device will be needed in the case where the
ammunition is fed automatically. The down
ward projection 2li may be employed for actuat 45
ing a fuel supply pump. In Figure 1, 35 desig-~
nates the plunger of the pump, 36 constitutes the
piston and 31 and 38 represent the admission
and delivery valves, respectively, of the pump.
Fuel is fed through a connection piece 30'. 40 50
represents a filter disposed near the connection
piece 40’. The parts of the gun surrounding the
combustion chambers are provided with cooling
fins ‘il consisting of a material of high thermal
conductivity, e. g. aluminum.
In the embodiment shown in Figure 1, a pro
jectile I2 is inserted in the gunY barrel I. Pro
jectile I2 is supported by a shell I4 containing a
porous oxygen-liberating cartridge' or stick I5.
60 aperture 2 and a conical extension adjacent the
The copper strip I3 attached to the projectile I2_
rear end of the barrel I. A hollow cylinder 3 is
provided with a conical head 6 and is movably
serves the double purpose of providing a tight
seal against the escape of gases from the com
disposed in the loading chamber 5, head 6 fitting
tightly into the conical'extension thereof. This
65 hollow cylinder 3 which constitutes the breech
imparting a rotary movement to the projectile I2
of -the gun is provided with packing rings 4 to
prevent -escape of air and gas from the loading
(chamber 5 into the cylinder 3 or vice versa.- A
sparkl plug I0 and a fuel injector II open into
the conical 'extension' of the loading chamber.
Conical head 6 is provided with openings 'I and 8
' _ allowing the discharge of sparks and fuel, respec
tively, to the interior of vthe conical head 3
forming a combustion chamber 9. The latter is
75 _closed-up against the barrel i by a projectile l2
Washer 22. Washer 27 is attached tao the end of
the rod 2l and forms a stop to the leftward
movement o_f the piston I9. Spring 32 exerts a
forward pressure on the cylinder head 28 urging
they cylinder 3 to the left. Springs 29 and 32 in 35
bustion chamber 9, on the one hand, and for ‘ ‘
on its travel through the-riñed gun barrel I, on
the other hand. The shell I4 is provided with a
closure disc> I1 having perforations I8 for the
purpose of admitting fuel to the oxygen-liberat
ingstick contained therein. Channel I6 extend
ing through the stick I5 assures ready distribu
tion of the injected fuel.
The mode of operation of the gun illustrated
in Figure 1 is as follows:
The loading chamber 5 is exposed by moving
handle 23 to the right. In the position 3|, shown
in dotted lines, the lock spring 30 entering the pansion and cooling chamber III surrounding
aperture 25 of projection 24 will lock the piston the combustion chamber I 02. YThe spent air is
rod 2| to the cylinder 3 which will be carried returned to the outeratmosphere through an
along when the movement of the handle 23 ‘is outlet |I2.
The cooling system operates as follows: When
continued, Ammunition is then loaded through
the loading aperture 2, the handle 23,.-piston I9 a_ shot is ilred, the breech lock piston |03 moves
and cylinder 3 are moved to the left t'o place the to the right, causing compressor piston |06 to
compress the air stored in the compression cham
projectile I2 infìring position, as shown in Fig
ure 1. Simultaneously therewith, the air in the ber |06. The air thus compressed is delivered to
10 combustion chamber 9 is compressed. due to the compressed air tank |09 whence it is conveyed
forwardstroke of the piston I9. At the same
to the expansion chamber III through valve IIO.
The latter should be adiusted in such a way that
the amount of air allowed to pass through per
combustion chamber 9. The atomized fuel and time unit will correspond to the amount of air
15 compressed air mixture penetrates' into oxygen ' compressed per time unit. The air having passed 15
time, projection 24 actuates the plunger 35 of
the fuel pump causing _injection of fuelinto the
liberating cartridge I5 and the combustion mix
ture is ignited by means of spark plug I0.
The gun construction illustrated in Figure 2
closely resembles that of Figure 1. The main
20 difference between the two constructions resides
in the fact that the construction shown in Figure 2 is adapted for use with a different type of
cartridge. Instead of a spark plug, the gun is
provided with a firing pin 48. The following is
a detailed description of Figure 2. ì
In this construction, 42 designates theY com
pression chamber which is provided with an ap
erture 45 for the injection of fuel from the fuel
injector I I. The gun breech is formed by a. mov
30 able cylinder 44 which is provided with pi‘ton
rings 46 serving as gas checks. Piston 41 mov
ing -within the cylinder 44 comprises a firing pin
48 which is movably disposed in a cavity 49 pro
_vided in the piston 41. Piston rings 50 are at
the expansion valve IIO is allowed to expand
suddenly in the'expansion chamber III where
by the temperature of the air Is considerably re
duced. The expansion chamber surrounds those
parts of the gun that are subjected to the great 20
' est amount of heat,namely, the combustion cham
ber |02 and the rear end of the barrel |00. 'I'he
latter are effectively cooled by the steady streams
of cool air circulating in the expansion cham
ber III. After passing through the expansion 25
chamber~ I I I, the air is returned to the outer at
mosphere through outlet
II2. `
It will be obvious that instead of atmospheric
4air as a cooling medium, a closed system using
any kind of gas or liquid adapted for refrigera 30
tion may be used. In such a modification, the
recoil action of the breech may be utilized in a
similar manner. ~
In> the embodiment illustrated in Figure 9 the
35 tached to the piston 41 to make a tight seal be- . recoil action of the movable breech is used for 35
tween the latter and the inner wall of the cyl
inder 44. The cartridge I2 adapted for use in
this gun comprises a fuse cap 5| provided with
operating the cooling mechanism. An object of
this invention is to use the recoil action of the
gun generally and I do not wish to be understood
a perforated disc I1 disposed on the shell I4. The
40 latter comprises an enlarged chamber 53 in which
as limiting my invention to the exact construction
the oxygen-liberating stick I5 is disposed. Cham
ber 53 is of such dimensions that it constitutes
a continuation to compression chamber 42 ofl
the gun. Perforated disc- I1 forming the bottom
shown in Fig. 9. Thus, besides the breech, any
part of the gun performing a recoil movement
_when a shot is fired may be utilized for actuat-4
ing the cooling mechanism.
Figure 3 is a‘bottom pian view of the type of
45 Wall of the shell I4 is kept in position by studs` cartridge shown in Figure l. 58 designates the 45
52 of the shell. Instead of the cooling fins 4I of closure disc which preferably consists of fibrous
the construction shown in Figure l, Figure 2 . material. Disc 58 is embraced by the shell wall
51 and provided with apertures 59 for establish- `
comprises a cooling jacket 54 having an expan
sion chamber 55 andan inlet opening 56 for the ing communication between .the combustion
chamber and the interior of the shell.
50 cooling medium.
Figure 4 represents a closure disc for use in
The operation -of the gun shown in Figure 2
is the same as that of Figure 1, except that in guns of the type illustrated in Figure 2. This
this gun the projectile is firedl by ñrlng pin 48 closure disc differs from >the closure disc shown
striking the fuse cap 5I.
The cooling arrangement forms an'important
part of the present invention because of the high
thermal energies developed during combustion of
the hydrocarbons in the,„presence of oxygen. In
in Figure 3 in that this disc comprises a fuse
cap 60.
In accordance with the present invention the
combustion of the explosive charge may be so
adjusted..-tha`t a uniform pressure equalling the
rapid :lire machine guns the use of an'eflicient » mechanical resistance for which the gun was con
structed is maintained in the gun untilthe pro 60
60 cooling system becomes all important.
The preferred type of cooling system 4ac ording jectile has left the muzzle.. This result may be
to the presentinvention, which is simple and
practical in construction and of high eflìciency
as well, is a system in which compressed air is
65 used as a cooling medium.
Such an arrange
ment is shown diagrammatically in Figure 9 in
which |00 designates the gun barrel, |0I a pro
jectile, -I02 the combustion chamber and |03 the
obtained by so proportioning the oxygen-liberat
ing compound with respectto the hydrocarbon
compound that combustion takes place step-wise
and a fairly constant pressure will prevail in the 65
barrel even after the projectile is started on its
Way. This feature may be further extended, in
accordance with the present invention, by con
breech lock piston. `'I'he latter is attached to' tinuing injection of fuel into the combustion
a. rcd |04 which also carries a compressor piston chamber after commencement of combustion.
|05 cooperating with compression chamber |06. Of course, this continued fuel injection will only
Air is supplied to the compression chamber |06 be possible where the injectors and fuel admis
by an intake-valve |01 and fed to a compressed sion valves are of suihciently strong construction
air tank |09 through valve I 08. Expansion valve to withstand the high pressures developed dur
ing explosion.
II 0 is interposed between tank |09 and the ex
Another method of obtaining the same result
consists in exploding successively secondary or
additional charges provided in the rear of the
projectile. A projectile will serve this purpose
best if its rear portion is constructed as a hol
low shell open at its end and ñlled with explosives
liberating stick 66 to absorb a combustible con
which will ignite shortly after the‘projectile is
pressure to oxygen-liberating stick 6B through
perforations 55 and the channel T5S'. The com
bustible mixture thus obtained may be ignited by
means of sparks or by raising the temperature 10
started on its way. Ignition for these secondary
charges may be produced either by the high pres
sure of the original charge or by means of a tim
ing. device. If secondary charges are us'ed igni
tion may ‘either take place while the projectile
is still in the barrel or it may be deferred until
after the projectile _has left the barrel. In the
ideal, uniform velocity. In addition, heavier'pro
jectiles may be used, yet the range of the gun
and the penetrating power -of the projectiles will
be increased.
Another advantage of this invention is the use
of a movable plunger and cylinder whereby the
gun is made to operate on the same principle as
a four-cycle explosion `motor. The fact that
there is no practical limit to the length of the
plunger stroke also deserves consideration, par
ticularly if guns are operated at varying alti
tudes, having a different density of air. In such
cases higher compression of the air will be a de
cided advantage.
The firearms described hereinbefore and illus
trated in the drawings represent simple hand
operated guns. It is obvious that the features
of those constructions may be readily transferred
~ to al1 kinds of guns such as automatic machine
50 guns, cannons and ordnances of any and every
sufficiently to produce spontaneous combustion.
Combustion within the shell 62 will eject the pro
jectile 6| and set olf the fuse cap 68 causing
successive explosion of the charges 69 contained
The cartridge shown in Figure 6 comprises a
shell 'F2 containing an oxygen-liberating stick l5
and a vessel ‘hl consisting for instance of gelatine
@5 explosions, a constant pressure of expanding
`gases may be obtained throughout the barrel
which will be lower than the pressure present
in ordinary guns in which a single explosion oc
curs. Owing to this constant pressure the guns
of the present invention give the projectile an
in the projectile.
guns of the present invention is the uniform ve
eous combustible of suitable composition.
gasoline is used it will be admitted under proper «
rocket, propulsion resulting from the counter
locity imparted to the projectile. By increasing
the size of the combustion chamber throughout
the barrel, by deferred combustion and successive
toluol, mononitrobenzol, or a solid, liquid or gas
latter case the projectile will behave as a sky
pressure of the escaping gases.’ In such projec
tiles the secondary charges should be separated
securely from the main ñring charge.
An outstanding advantage produced by the
taining a hydrocarbon or a derivative such as
gasoline, kerosene, gas oil, crude oil, mononitro
and containing a hydrocarbon derivative such as
liquid gasoline or kerosene or a combustible oil, 20
or a carbon powderor a gaseous fuel-like acety
lene. 'i6 designates the combustion chamber in
side the shell l2. The latter is closed at its bot
tom by a, solid closure disc 13' provided with a
fuse cap 13. For firing this projectile no ex 25
plosive need be admitted from the outside. The
projectile is ñred by striking the fuse cap 'H3
causing a vessel 19 to break, whereby the gasoline
or other hydrocarbon contained therein is re
leased and mixes with the oxygen-liberating 30
compound. The resulting mixture when ignited
produces combustion.
Figure '7 shows a projectile Tl provided with
a cavity 18 containing a hydrocarbon. The oxy
gen-liberating stick 82 is disposed in the combus 35
tion chamber 83 of shell 80. 19 designates a
seal closing cavity 18, and 8| is the fuse cap
provided on the solid closure disc 8|’ at the
bottom of the shell 80. The projectile is fired
by striking the fuse cap 8| causing rupture of
the seal 19. Combustion- will result when the
hydrocarbon contained in the cavity 78 pene
trates into and mixes with the oxygen-liberating
stick 82, ignition being produced by the flame
of the exploding fuse cap.
Figure 8 shows a projectile 84 'carried by a shell
88 containing the oxygen-liberating stick 9|. 92
designates the combustion chamber of the shell
88, 89 represents a fuse cap and 90 is a channel
extending through the oxygen-liberating stick
9|. The projectile 89 is provided with a hydro
carbon containing a cavity 86 which is sep
The following is a description of the new type 'arated from the remaining parts of the projec
tile by a solid wall 85 and from the interior of
of ammunition according to the present inven
tion, which is adapted particularly for use in the shell B8 by a seal 81. 94 designates a second 55
oxygen-liberating stick which is placed adjacent'
connection with the iìreanns hereinbefore de
` to a. hydrocarbon vessel 93 disposed in a com
The cartridge shown in Figurey 5 comprises a bustion chamber 95. Shrapnel balls 96 are dis
Shell 62 containing a porous oxygen-liberating posed in the forepart of the projectile 851 which
stick 66 consisting, for instance, of chlorate or 'is penetrated by a time fuse channel 91 leading
perchlorate of potassium, sodium or ammonium; to a fuse cap 99. A timing device of known con
Closure disc 64 provided with apertures 65 rests struction is disposed ¿at 98. '
By striking the fuse cap 89 the seal 81 is
on studs 63 of the shell 62. 61 is a solid disc
separating the interior of the shell 62 from the broken and the content of the cavity 86 mixes
interior of the projectile 6|. 66’ designates a with the oxygen-liberating stick 9| which mix 65
ture, when ignited, causes combustion which will
channel penetrating through the oxygen-liberat
ing stick 66 and providing ready access thereto.~ _result in the ejection of the projectile 84. Then,
Metal rings 6I' disposed on the `projectile 6| the time fuse 9,1 actuates fuse cap 99 causing
serve as gas checks and for imparting rotation the hydrocarbons contained in the-vessel 93 to
70 to the projectile. Projectile 6| comprises a fuse react with the oxygen-liberating stick 99. 'I‘he
cap 68 and a -plurality of explosive charges 69 resultingV explosion will burst the walls of the 70
separated from one another by discs 10. Discs - projectile 84, dischargingthe shrapnel balls 96
69, Bland 18 preferably consist-of ñbroug mate contained therein.
In the type of cartridge illustrated in Figures
The projectile is ñred by causing the oxygen
6, 7 and 8, gaseous fuel may also be used, e. g.,
oxygen liberating compound disposed therein„an
acetylene _and acetone under pressure may be
injector associated with the firearm, and a com
employed to advantage. The acetone, acting as
a solvent of ,acetylene minimizes the danger of
explosion. Gaseous fuels may either be filled up
in separate vessels and disposed at the rear of
`the projectile or the projectile proper may be
bustible adapted to be injected by said injector
into said receiving means and to react with the
oxygen liberating compound contained therein
and means to ignite the mixed combustible and
oxygen liberating compound, to produce explo
provided with a rear chamber in which com
pressed gases may be stored. The gases are
liberated when the gun is ñred. This may be
done for instance by striking a fuse cap. 'I'he
3. The combination with a firearm comprising
a combustion chamber, an injector and a com
10 liberated gases will react with the oxygen-liber
ating compound when the charge is ignited.
Continuous combustion may be achieved by stor
ing in the projectile a sufñcient quantity of com
15 pressed gaseous fuel and allowing the same to
escape gradually. Such continuous combustion
will produce a constant pressure in the gun barrel
which will .be maintained until the projectile
bustible adapted to be injected thereby into the
combustion chamber, of a projectile disposed
adjacent to said combustion chamber and com
prising an oxygen liberating compoundadapted
toI react with the combustible to produce explo 15
- 4. 'I'he combination claimed in claim 3, com
prising means for producing ignition in the com
bustion chamber.
5. The combination claimed in claim 3, in 20
` which said firearm comprises a firing device and
ly well be used' for shell bursting charges, shrap.
the said projectile is provided with a ñring means
nels and the like as shown in Figure 8. 1n such adapted to be operated by said firing device.
has left the barrel.
case, 'care must be taken that a solid separation
6. The combination with a ñrearm comprising
a closed chamber and a combustible disposed in 25
Wall such as 85 separates the bursting charge
If no propelling A
25 from the propelling charge.
charge is provided, the rear part of the projectile
said chamber and consisting of -a substance be
may be utilized of course for bursting purposes.
Explosion for `‘the bursting charge may be pro
duced by any known means such as a timefuse,
percussion cap or the like.
The present invention affords many great ad
vantages. Pure chlorate of potassium for in
stance, which is preferably used as oxygen
liberating substance, is practically insensitive to
35 friction and shock. Experiments have demon
strated this fact: for instance, a 20_ lb. weight
was dropped upon pure chlorate of potassium
from a height of more than thirty feet without
producing explosion. Moreover; chlorate is not
hydroscopic, nor is it sensitive to cold. It may be
40 stored indefinitely vand will not decompose, dif
fering herein particularly from ammonium or
cheaper than any other`~explosive of the same
potential energy and may now ‘be manufactured
45 on 'a large scale by electrolytic processes utilizing
solutions of _chloride of potassium or sodium.
The large quantities of electric energy used up
in those processes may properly be said- to be
stored in the chlorate produced, ready to` be
given up instantaneously when the chlorate is
combined with a hydrocarbon under pressure
» at raised temperature. The combination'of these
two chemicals create ,tremendous energies which
compare most favorably with the energy pro
duced by the common explosives now in use.
Finally, it should be observed that the use of the
longing to the class of hydrocarbons, of a car
tridge disposed in proximity to said chamber and
comprising an oxygen liberating compound
adapted to combine with the said combustible in 30
side the firearm to produce explosion.
7. The combination with a ñrearm comprising
a combustible consisting of liquid gasoline, of a
cartridge carrying a. charge consisting of dry
chlorate of potassium disposed close to said gas 35
oline and adapted to combine with the s_ame in
side the firearm to~ produce explosion.
8. 'I‘he combination of a ñrearm with a com
posite explosive charge therefor, consisting of a
liquid combustible and an oxygen liberating com-pound separated from each other. and means'for
combining and ignlting the said combustible and
the oxygen liberating compound inside the ilre
arm to produce explosion, said liquid combustible
being a substancebelonging to the class of hydro 45
9. A ilrearm comprising a casing provided with
a loading chamber, a barrel supported by the
casing, a breech consisting of a hollow cylinder
movably disposed in said loading chamber, a 'pis 50
ton disposed in said cylinder and movably mount
ed with respect to the barrel, the forward part
of said cylinder forming a combustion chamber.
10. A nrearm comprising a casing provided
with a loading chamber, a barrel supported by 55
said casing, a breech consisting of a hollow cyl
inder movably disposed in said loading chamber,
a plunger disposed in said cylinder and movably
combined explosive according to the present in
mounted with respect to the barrel, the forward
vention removes almost completely all danger
of said cylinder forming a combustion 60
of premature explosion in the gun because thev chamber,`
and a fuel injector adapted to inject
two components of the explosive charge arel fuel to the interior of said combustion chamber.
really not explosive until >they combine under
11. A nrearm as claimed in claim 10, in vwhich
pressure. But according to the present invention said >cylinder is provided with a locking mem
injection and compression of the mixture can ber and said plunger > is provided with means 65
take place only after the loading chamber of the _ engageable with said locking member for inter
locking the said cylinder and plunger.
gun has been closed.
I claim:
12. A firearm as claimed in claim 10. in which
said fuel yinjector includes a fuel pump and said
a closed chamber and a combustible in said» movable plunger comprises means for actuating
said pump when the plunger is moved.
70 chamber, of a cartridge disposed inside the ñre
arm and comprising an oxygen liberating com
13. Ina ñrearm as claimed in claim 10, a spark
pound, and means for combining the latter with plug for igniting the charge contained in the said the combustible inside Vthe firearm to produce combustion chamber, piston rings on the said
cylinder and plunger to -prevent escape of air and 75
1'. The combination with a firearm comprising
2. A firearm comprising a receiving means, an.
gases, a locking member disposed on said cylin
der, means attached to said plunger and engage
able by said locking member, and actuating
means for moving the'said plunger.
11i. A iirearm as claimed in claim 10, compris
ing cooling means disposed adjacent to the said
combustion chamber of the firearm.
15. A ~ñrearm comprising a casing provided
with a loading chamber, a barrel supported by
10 Said casing, a breech consisting of a hollow cyl
inder movably disposed in said loading chamber,
a plunger movable in said cylinder, a firing pin
associated with said plunger, and a fuel injector
for injecting fuel to the inside of said movable
15 cylinder forming a combustion chamber.
16. A. firearm as claimed in claim 15, compris
ing locking means for interlocking the plunger
and the cylinder and a jacket for a cooling me
dium adjacent to the combustion chamber of the
20 firearm.
17. A ñrearm as claimed in claim 15, compris
ing a cylinder closed at one end to form a com
pression chamber for the plunger, intake and out
let valves for a. cooling medium provided on said
compression chamber, and a cooling jacket dis
posed adjacent to the combustion chamber of the
firearmY and connected with said compression
chamber to receive the compressed cooling me
dium therefrom.
18. A cartridge for firearms and the like, com
prising a Shell and a projectile adapted to be
oxygen liberating compound, the major part of
the rear of said shell being open, whereby the
same is adapted to rapidly admit a combustible
to said compound, the latter being provided with
relatively large pores, whereby the said compound ~
is capable of rapid mixture with a combustible
. admitted thereto.
19. The method of ejecting a bullet from a
firearm, lcoimirising a combustion vchamber and
an oxygen liberating compound disposed therein,
which method consists in injecting into the ccm
bustion chamber a hydrocarbon adapted to com~
bine with said oxygen liberating compound, ig
niting the _mixture to produce combustion and
to propel the bullet, and continuing thereafter
to inject the hydrocarbon into the combustion
chamber, in order to maintain a uniform pres
sure behind the bullet until its ejection from the
20. The combination with a firearm compris
ing a receiving means and one component of an
I explosive charge disposed therein, ,of a cartridge
disposed in said :firearm and comprising the sec
ond component of said explosive charge, said sec
ond component being of solid constitution, and
means for combining the said two components
inside the firearm to produce an explosive mix
21. The combination claimed in claim 6, in
which said combustible consists of gasoline.
ejected therefrom, said. shell containing a solid
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