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Publication numberUS1447023 A
Publication typeGrant
Publication dateFeb 27, 1923
Filing dateFeb 3, 1922
Priority dateFeb 3, 1922
Publication numberUS 1447023 A, US 1447023A, US-A-1447023, US1447023 A, US1447023A
InventorsChristian Kaiser
Original AssigneeGreat Falls Automatic Shell Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1447023 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

5 sheetsl KAISER cTI Filed Feb. 5, 1922 ATTORNEY Feb. 27, 1923f C. KAISER PROJECTILE Filed Feb. 5, 1922 5 sheets-sheet 2 INVENTOR a:



5 sheets-sheet 5 INVENTOR W ATTORNEY C. KAISER PROJECTILE Filed Feb. 5, 1922 X 1 I h I I .I y) m'llllllll A Feb. 27, 1923.

Patented Feb. 27, 1,923. i


CHRISTIAN KAISER, or eit er FALLS, Momma, assrenon 'ro cnm'r rALLs noromra'rrc SHELL comrm, or GREAT reLLs, mon'rma.


Application filed February 8, 1922. I Serial No. 533,759.

projectile of such class, with means in a manner as hereinafter set forth, and capable after the projectile is fired to cause it to travel to an extremelj great distance, by way of example, a range of from 100 to 150 miles. I

The invention has for its further object,

to .provide the projectile with means, after.

it is fired, to automatically apply thereto successive accelerating or boosting impulses, during the flight of the projectile, under such conditions causing the projectilefto travel an extremely long distance.

v The invention has for its further object, to provide the projectile with a plurality of inherent impulseelements, one operating in advance of the other and successively exploding during the flight of the projectile to impart a successive series of accelerations or boosting impulses thereby causing the projectile to travel an exceedingly long distance.

The invention has for its further. object, to provide the projectile with a plurality of inherent impulse elements, one independent of the other, operating one in advance of the other and successively exploding and separating from the projectile, under such conditions decreasing the weight of the pro-. jectlle and impartmg a successive series of accelerations or impulses during the flight of the projectile whereby there is obtained for the latter an extremely long range. I

Further objects of the invention are to provide a projectile for the purposev set forth which is comparatively simple in its arrangement and construction, eflicient in its use, having means to automatically provide for a successive series of impulses during the flight thereof to obtain an extremely long range therefor, and comparatively inexpensive to manufacture.

- With the foregoing and other objects in viewftheinventlon consists of a novel construction, combination and arrangement of parts, as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown the embodiment of the invention, but it is to be understood that changes, variations and modifications can, be resorted to which. come withinthe scope of the'claims hereunto appended.

In the drawings wherein like reference characters denote corresponding-parts throughout the several vie'ws:

Figure 1, is a sectional elevation illustrating the projectile contained within a shell and the whole arranged within a cannon;

Figure 2, is a longitudinal section through the improved projectile; Figure 3, is a transverse section on line 33 of Figure 2 taken through one of the propelling chambers or section;

Flgure 4, 1s a similar view on line 44 of Figure 2 through the detonating explosion chamber;

Figure 5, is a central, longitudinally sectional view showing one of the impulse elements or propelllng explosion chambers showing the automatic firing mechanism and time fuse arrangement.

Figure 6, is an end view of one of the impulse elements or propelling explosion chambers with the cover plate 41 and covering fabric 43 omitted in order to show the interior thereof;

Figure 7, is a detail lon itudinal section on line 7-7 of Figure 5 s owing the stay plate which holds the firing mechanism in place;

Figure 8, is a detailed'transverse'section through the fuse ignition chamber on the rear end of the firing pin on line 8-8 of F igure 5;

Figure 9, 1s a longitudinal detailed section on line 99 of Figure 8;

Figure 10, is a detailed transverse section through a firing pin body and detonati'ng:

- which constitutes an is designed to contain will crush over the nose and through a slightly modified form of projectile.

Referring fmore in detail to the accompanying drawing the numeral 1 designates the bullet, which may be solid or ofthe shrapnel or gas-filled type, and 2, 3, 4, 5, and 8 a are theindependent impulse elements propelling explosion chambers which form, with the bullet 1, the complete projectile, the same being mounted'within the shell 6 which is to contain the charge for the initial discharge of the projectile from the cannon 7. The shell 6 is here shown as being disposed within a cannon 7 ready for being fired. .That portionof the wall of theshell 6 surrounding thecharge,v for initial dis-' charge of the projectile, being thicker than that portion of the wall of the shell 6, which surrounds the impulse elements or propelling explosion chamber, and by this arrangement an annular shoulder is provided annular seat for the baseofthe projectile when ,mounted in the shell 6.

Each of the propelling explosion chambers 2, 3, 4-and- 5 comprises a cylindrical body end counter-bored to pro-' having its forward vide an internal shoulder or seat for the next a forward chamber, the chambers 4, 3, 2, and

8 having their rear portions reduced in di--, ameter so as to telescope or nest within the next succeeding chamber'andengage on the internal shoulder thereof. Each chamber an-explosive which when fired, will impart an added impetus or acceleration to the preceding projectile section. Throughout its flight the projectile will be intermittently boosted through the successive explosions of the chamber, the final charge in chamber 8 serving to explode the main charge in the bullet 1 unless the latter shall strikeits object previously thereto in:which latter instance a pointed cap 9 on the forward end or nose of the bullet drive the firing pin 10, carried by the cap 9, rearwardly to explode a primer 11, the pin 10 extends into the bullet 1 to within a short distance of the primer 11,-the latter is fitted into a recess formed in the inner end of a hollow plug 12", which is filled with an explosive charge and connects the primer 11 with a more powerful primer 13, mounted 'in a'flanged perforated thimble 14 which is secured in a ,threaded collar formed on the plug 12." The purpose of this arrangement is to cause the exploding of the main charge in the explosive bullet, in case the bullet strikes a target before the explosion ofa charge in a detonating chamber, which is connected 'with and communicates with the bullet at the rear end of the latter. This detonating chamber will be presently referred to. When the charge in the plug 12, is ignited by the primer 11, the primer '13 is operated, to

charge 29 in the holder 28.

mamas ignite a detonating charge 53 contained within a cylinder 15 and finally exploding the main charge 54: of the bullet. Obviously the bullet will explode whether it hits prematurely or not, and by the proper timing of the several explosions the bullet will explode during its flight even if it has not hit its I object. The main charge is confined within the bullet 1 by a perforated plate 16 closing its rear end.-

The impulse or '75 I propelling chamber 8, is also what may be termed a detonating chamber, is constructed similar to theother impulse elements, except that the sleeve'wh-ich projects forwardly and which is indicated at 8, is threaded for the purpose of attaching it to the rear end of the bullet 1, and further that its cover plate 58 is perforated. The

purpose of the impulse element 8, is to detonate or explode, through the perforated '85 :plates 16 and 58,the main charge 54 in the 'bullet 1, just before the latter reaches its target, in case an explosive bullet, as illustrated, is used. 1

Within each'i-mpulse elementor propelling explosion chamber, is fixed a firing pin body or guide 18, in the form ofatube having a flared inner end seated in a recess in the rear wall of the body of the element. 'The firing pin body or guide 18 has its outer end i also flared, and the said outer end is engaged in an annular recess formed in the. closureplate 41 of the element.

' The firing pin body 18, near its forward end isprovided with a firing pin 25, formed with a peripheral annular groove to receive the-pointed inner end of a plunger or trigger, and which when engaged in the groove of the firing pin 25, retains the latter in position against the. action of a coiled spring 26- which has its forward end held by a pin 40, mounted in the forward end of the firing pin body 18. firing At the rear endof the pin body 18, is a fuse ignition chamber containing a hollow double flanged holder 28, no for a primer 27, which ignites a powder At the rear of the holder 28, andwithin the same, is arra a fuse retainer 35. Fixedly connected to the rear of the fir as well as opening into the ignition chamber formed at the rear end of the firing pin body 18, are a plurality of bent tubes 31, referably four in number, andthrough which extend fuses 30, these latter pass through the wallof the ignition chamber in the firing pin body 18 and also through .the wall of the chamber in the holder 28, in which is mounted the fuse retainer 35. The ends of the fuses are split, to expose the combustible carried thereby and the split' end of each fuse is spread apart and extended in a longitudinal groove on the periphery of the retainer 35. The number of grooves on they periphery of the retainer 35, equal the, num

g pin body 18,

The fuses extend throughout the length of the tubes 31, and terminate in contact with primers 34, which are disposed around the firing pin body 18. The primers 34 are contained in the perforated and threaded primer thimbles 33. A spacing ring 32 is provided for the fuse tube and primer thimbles, and which is clamped between the threaded bell on the end of a primer thimble and an annular shoulder near the threaded end of a fuse tube.

Disposed at right angles with respect to the firing pin body 18 is a cylindrical guide 19, which is held securely in position by having one end fitting tightly into a socket 4 in the body 18 and its other end mounted in an opening formed in a stay plate 20. The

guide 19 has mounted thereon, a shiftable sleeve 38 and arranged within the guide 19 is. a spring controlled plunger 24, which' at' its inner end, extends into an annular groove formed in the firing pin 25. Plunger 24 is held in engagin position with the firing pin 25, against t e outward pressure of the spring 46, by a segmental locking block. 37, in the guide 19 and engaging in a groove 45 formed in the plunger 24. Removably attached to the outer end of the plunger 24, is a stud of a tapered intermediate extension pin 23 carrying an outer extension pin 21 the latter is of such a length as to extend into'the tapered opening 22 formed in the wall of the explosion chamber.

The stay plate 20 is curved to fit the inner wall of the explosion chamber and serves asa support and loeator for the guide 19. It is held in place, at its forward end by the engagement of its bevelled or dove-tailed edges, with similar bevelled edges 45 of a notch cut through the-shoulder 42, on the inner wall of the explosion chamber. The

' rear end of the stay plate 20 is held in po-- sition, through the medium of a pair of studs 44.

ner end of-the guide 19 and interposed between a shoulder on said guideand the firing body 18.

plosion chamber, and pin 21 is inserted through the hole 32. The base of the explosion chamber is then-inserted and pressed back into the bell or apron of the explosion chamber adjoining at-the rear, the air esof cover plates 41, 58,thence into the annular groove 47 and thence through the ports 38 in the outer wall. 7 j

The extension pin 21, when the parts are in the position referred to, has a bearing against the wall of the bell of the adjoining chamber, and provides what may be termed a secondary support for the plunger 34, thereby holding it and the firing pin 35 securely in place and as long as the two explosion chambers or impulse elements remainin the same relative position.

After the parts have been assembled, in the man r, as referred to, the sleeve 38 is pressed back against the action of its spring 39, and the locking block 37 is' then removed, after which the sleeve 38 is returned to its original position closing the slot formed by the removal of the block 37 The explosive charge 56 or 5, is now packed into the explosion chamber and covered by the fabric. 43, and also the cover plate 41 or 58.

The impulse element'or propelling explosion chamber 55, as it does not seat in an impulse element at the rear thereof, must be provided with a device to coact with the extension pin 21, and the device, as shown, consists of a release block 5 0,'fitted into a slot or pocket in the outer wall of impulse element or propelling chamber 5, and said vide-a support for the block 50 until the latter'is engaged by the wallpf the shell 6.

Soft ,metal powder rings intended to engage the rifie barrel of the cannon, are indicated at 51,52 and 57.

In operation the projectile is first fired from the cannon by the initial explosion of the charge .in the shell 6, asthe projectile travels out through the barrel of the cannon, the release (block 50 bears against and retained in place by the wall of the barrel. On leaving the muzzle of the gun or can- "non; this. block 50 and the outer extension pin" 21 oif, due to the action'of the plungerspring 46- forcing the plunger 34 out-- wardly to the position shown in the dotted lines, Figure 5. This action of the plunger 34,-forces the tapered pin 23 in the opening 22/ completely closing it. When the plunger v spring 46, forces the plunger 34 outwardly, it causes the release of the firing pin 25,

which is driven back by the spring 26, to the position shown in the dotted lines in Figure 5. The air contained in the firing pin body 18, is free to pass forward, through the prot-ion of the powder charge 29and fuses 30(i are free to escape through the perforate flange of holder 28, through the tube, of the firing pin body 18, thence through the ports of the firing pin 25, a center 'opening in theplate 41, into the space forwardly of the plate 41, thence through radial openings in the inner and outer flanges of the late 41, into the annular groove 47 forme the explosive chamber, through the ports 48.

. The fuses 30, burning at their other ends ignite the detonating primers 34, which explode the charge 56 in the impulse element or propelling explosion chamber 5. The explosion of this charge exerts its force in all directions giving an'impetus or boost to the velocity of the forward part of the projectile and stripping off the propelling. explosion chamber 5 from the adjoining propelling' explosion chamber 4, thereby uncovering the extension pin 21 of the propel-v ling explosion chamber 4, when the foregoing described operation of firing is repeated,

as well as, in connection with propelling explosion chambers, 3, 2 and 8.

With reference to the modified form shown in Figure'12, the difference withro spect to the construction shown in Figu 2, is that a tube is fixed to the bullet on the forward end vof the projectile, which tube is to serve as a barrel chamber, from which 1 each succeeding impulse element or thepropelling explosion chamber will be discharged, the purpose being to better utilize the force of such propelling explosion, by

confining the compressed gases behind the:

projectile for changing the time for the sections being ejected as the flight proceeds. It will be noted further that eachimpulse element or propelling explosion chamber from the rear chamber indicated at 5,has a-gr'eater distance to travel before leaving theend of the tube, and the presure of the gases against the part of the projectile remaining would therefore be elfected to a regular'incre'asing time interval, as the initial velocity 'of'the projectile expended itself.

It will be dbserved that ineither form a projectile is provided which will be accordtelescoplng chamber, charge firing means" ed added impetus" or boosts at regular inin the Wall of and discharged.

the bullet strike before the final explosion of the boosting charges the bursting char will immediately become effective. It Wlll be noted that the arrangement of the firing pin unit within each chamber is such that great reinforcement of the rear or'bottorn wall of the chamber is aflI'ord'ed at a central or axial point so that the-entire projectile is longitudinally braced. Theexplosion of the propelling charges does not affect. the previous chargessince the several sections have telescopic .fit and will readily be come displaced at the proper moment.

What is claimed is:

1. A projectile comprising, a bullet and a plurality of propelling chambers attached thereto in order, each section or chamber constituting an entirety and mechanically controlling the firing of the propelling charge in the next preceding chamber, and a skirt attached to the bul et and inclosing the chambers, said skirt having its rearend open. 2. A projectile comprisin an explosive chamber having an opening t ough its'side Wall, a firing pin within the chamber, a stem for normally holding the pin inoperative,

- means for urging the stem to a position for ha, a firing pin in each chamber, a lock for holding the pin inoperative, said lock being held operative by the telescoping rear chamher, and a spring for urging, the lock to its inoperative position .when its chamber is expelled from the-telescoping chamber.

4.A projectile-comprising a' plurality of propelling chambers designed for being successively exploded, mechanical means under the control of the next succeeding section or chamber for firing-the charge, and meansfo'r the rearmost chamber for effecting an operation of its mechanical means immediately following the movement of the projectile from the muzzle of the cannon. j

5. A projectile comprising-a plurality of propelling. chambers telescopically related,

ring means within each chamber for ex- 12 Elodmg the charge therein andembodying a I ring pin, andwa pin-lock normally held operative by a telescoped chamber. 6. A projectile" comprising a plurality of propelling. chambers, the forward section of each chamber telescoping therear end of the next preceding section, said chambers having radlalopenings normally closed by the through the openings and releasable upon displacement of the telescoping chamber for starting operation of the firing means.

7. A projectile comprising an explosive chamber having a side wall opening, a firing pin, a guide tube for the pin secured in the chamber, a second guide tube extending from the first guide tube. to the side wall of the chamber about the opening therein, a valve for closing the opening 'sl idable in. the second guide tube and adapted to be held inope'rative by an encircling member into which the chamber is placed, and means for securing the firing pin inoperative and operable upon the seating of the valve to release the firing pin.

8. A projectile comprising a bullet, a propelling chamber telescoping the rear end thereof, a firing pin, an axially arranged guide tube inthe chamber for guiding the pinand forming a stay for the chamber, and

a charge adapted to be ignited by the firing 9. A projectile comprising a bullet, a propelling chamber telescoping the rear end thereof, a firing pin, a guide tube for the latter within the chamber, a timed fuse, a tube housing the fuse and supported by the uide tube, and fuse-igniting means within the guide tube set in operation by the firing pin. v

10. A projectile comlprising a bullet, a propelling chamber telescoping the rear end thereof, a firing pin, a guide tube for the latter within the'chamber, a timed fuse, a tube housing the fuse and supported solely by the guide tube, and an igniting charge holder arranged within theguide tube for supporting a primer in the path of the firing pm.

11. A projectile comprising a bullet, a

propelling chamber telescopin the rear end thereof, a firing pin, a guide tu for the latter within the chamber, a plurality of fuse tubes secured to the gulde tube, an annular spacing ring encircling the guide tube and having openings to receive the fuse tubes, and primer housings th'readedlyconnected to the latter and clamping the same to the spam ring.

projectile comprising an explosive chamber having a side wall opening, a firing pin, a guide tube for the pin secured in the chamber, a second guide tube extending from the first guide tube to the side wall of he chamber about the opening therein, a, va ve slidable in the second guide tube for closing the side wall opening, means for urging the valve to a seating position, and means for locking the firing pin inoperative, said means l movable byand during the seating move-.

ment of the valve to release the firing pin.

13. Aprojectile comprising a bullet, a pro- V pelling chamber telescoping the rear end der the stem inoperative, and means engaged inoperative, a spring for displacing the stem thereof, a firing pin, a guide tube for the 66 latter within the chamber, means operable by the. pin for igniting a charge in the chamber, a pin-locking stem for holding the pin inoperative, a spring tending to r'enwhen the latter is released, a guide for the stem, a locking block insertible through the guide for temporarily holding the stem operative, a spring-pressed sleeve slidable over the guide and block for securing the latter in position, and means for releasably holding the stem operative when the projectile is disposed for firing.

'15. -A projectile comprising an explosion chamber, means therein for exploding a charge and embodying a firing pin, said chamber having an opening through its side wall, means releasably holdin the pin in operative and having a part a a'pted for closing the wall opening when the pin is released, and means'exteriorof the chamber for holding the second means operative and adapted to-be displaced during flight of the projectile to permit the pinto function.

16. A projectile comprising a bullet having a tubular rearwardly extending skirt, and a plurality of successively operating explosive chambers housed within the skirt and adapted for being discharged from the rear end of the skirt. I f

17. A projectile comprising a bullet hav-. ing a tubular skirt, and a propelling chamber contained withing the skirt and detachably connectedto the bullet for bodily escap- I in'g. rearwardly through the skirt with a propelling influence.

18. A projectile comprising a shell, a bullet, a plurality of lengthwise disposed and successively operated lmpulse elements mounted in said shell and each provided actuated devices for firing said charges for automatically applying successive accelerations or boosting impulses to the rear of the bullet during the flight thereof thereby providing, for an increased range for the pro-' jectlle dur ng the flight thereof, one ofsaid with an explosive charge, the forward one devices being controlled by said shell and the other of said devices controlled by .said

I means.

19. A projectile comprising a bullet, a series of telescopic propelling elements arranged rearwardly'of the bullet and one of said elements telescoping the bullet at the rear thereof, an axially arranged firing pin body within each of said elements and provided with a firing pin, a charge adapted to posed locking device for'the pin, means ar-. ranged exterlorly of said elements for controlling said locking devices and means whereby said locking devices are successively released to obtain boosting impulses to the bullet during flight thereof.

In testimony whereof I affizi my signature;


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4930421 *Jul 11, 1988Jun 5, 1990The Boeing CompanyPartitioned, fluid supported, high efficiency traveling charge for hyper-velocity guns
US7475636 *Feb 10, 2004Jan 13, 2009Metal Storm LimitedProjectile with selectable kinetic energy
US7707941Nov 19, 2008May 4, 2010Metal Storm LimitedCartridge assembly for multiple projectiles
US8402897Dec 30, 2008Mar 26, 2013Metal Storm LimitedProjectiles with sealed propellant
US8453572 *Jul 15, 2010Jun 4, 2013Raytheon CompanyGun fired propellant support assemblies and methods for same
US20120012021 *Jul 15, 2010Jan 19, 2012Raytheon CompanyGun fired propellant support assemblies and methods for same
DE1081803B *Nov 22, 1955May 12, 1960Boelkow Entwicklungen KgZusatzkartusche fuer Geschosse
DE1098855B *Feb 22, 1956Feb 2, 1961Boelkow Entwicklungen KgMit dem Geschoss mitbeschleunigte Zusatzkartuschhuelse
U.S. Classification102/490
International ClassificationF42B5/00, F42B5/10
Cooperative ClassificationF42B5/105
European ClassificationF42B5/10B