Abstract: A charge arrangement for cartridge ammunition having a cartridge case, a bottom igniter secured in the case bottom and a primer that coaxially surrounds at least one part of the propellant composed of bulk powder and a tail-side part of a projectile that projects into the cartridge case. To ensure reliable ignition of the propellant bulk in a simple manner, a primer is provided that is comprised of either a separate, relatively thin-walled, combustible sleeve or the inner layer of a multilayer, combustible cartridge case which faces the propellant.

Abstract: Ammunition comprising a cylindrical case (1) with one of the closed ends having coaxially a concentric chamber (1a) capable of receiving a propulsive means for a projectile lodged in the case. The propulsive means consists of a blank cartridge (2) lodged in a diffusing means (3), the cartridge and diffusing means assembly being inserted into the coaxial chamber of the case.

Abstract: The present invention describes an igniter-destructor device for projectiles, grenades, cartridges, missiles or the like, comprising a thin-walled aluminum capsule, an igniter-destructor charge provided within said capsule, possibly an ignition expediting material within this charge, and a flange piece disposed at the head-end of the aluminum capsule and having an axial bore. The aluminum capsule is coated with a thin-walled plastic jacket which is preferably made from a shrink hose. Furthermore, there is preferably provided a specifically embodied ignition-expediting material which consists of ignition particles statistically distributed within the igniter-destructor charge. Such an igniter-destructor device is characterized by an especially clean and reliable operation as its functional conception, even under high stress occurring in the use of appliances which such igniter-destructor devices are installed into, remains substantionally unchanged.

Abstract: The invention relates to a propellant charge igniter mountable in a propellant charge carrier or in a cartridge. Propellant charge igniter is provided with an expulsion charge to avoid breech flash, said charge being suitable for driving an ignition guide tube completely out of an annular chamber formed between a bottom part and a flame guide tube of the propellant charge igniter.

Abstract: An improved cartridge 24 is disclosed for use in an explosively operated industrial tool 10. The cartridge 24 includes a retaining plate 60 for assuring that, after firing the cartridge 24, the spent primer 32 cannot be inadvertently ejected into the interior of the tool 10, where it can subsequently adversely affect the performance of the tool 10. The retaining plate 60 is washer shaped having an upwardly turned beveled peripheral edge 64 that interferingly engages portions of a gas check member 36 that holds the primer 32. The retaining plate 60 has a hole 61 that allows access to the detonator cap 68 for firing yet will not permit passage therethrough of the detonator cap 68 itself.

Abstract: An ignition device for propellant of a projectile having its aft section ending deeply rearward within a shell case comprises a strand holder, a primer head, and flexible ignition strands with the primer head, when installed, being supported by the shell case and supporting the strand holder which in turn preferably supports the aft end of the projectile. The ignition strands, symmetrically disposed, contact the propellant and in preferred embodiments also contact the projectile, and/or the interior of the shell case, as well as the propellant, and extend along the body section of the strand holder and through conduits therein into a combustion chamber, formed intermediate the installed primer head and a platform section of the strand holder, and with the combustion chamber containing an igniter booster charge susceptible to ignition by a firing means adapted to be used with the primer head.

Abstract: A cartridge is made up of a synthetic resin case member and a synthetic resin lid. The case member contains a first receiving chamber for receiving an igniter charge and a second receiving chamber for the accommodation of a propellant charge. A synthetic resin ignition pin flexibly connected to the lid extends into the first receiving chamber. Upon the exertion of pressure by a striker on the rear end of the ignition pin, the pin is advanced further into the first receiving chamber, a pointed forward percussion end of this ignition pin acting on the igniter charge to ignite the charge. The igniter charge is accommodated in funnel shape in a conical depression of the first receiving chamber. The percussion end of the ignition pin, extending into the igniter charge, upon displacement, causes friction in the igniter charge material and thus generates frictional heat therein.

Abstract: A cartridge assembly for propelling a subcaliber penetrator through a gun tube which has a portion of the propellant charge contained in an annular cavity surrounding the sabot is disclosed. The annular cavity is defined by the scoop shaped front bourrelet, the aft bourrelet which has three radially extending support posts and bore riding shoes, and a combustible tubular case extension over the aft bourrelet extending forward to the front bourrelet. The assembly includes cartridge case having a multistrand ignition system having a plurality of flexible combustible ignition strand. The strands extend through the propellant charge in the case and extend between the posts of the aft bourrelet into the annular cavity to simultaneously ignite the propellant charge contained therein with the portion of the charge in the cartridge case.

Abstract: A cartridge assembly for propelling a subcaliber penetrator through a gun tube which has a portion of the propellant charge contained in an annular cavity surrounding the sabot is disclosed. The annular cavity is defined by the scoop shaped front bourrelet, the aft bourrelet which has three radially extending support posts and bore riding shoes, and a combustible tubular case extension over the aft bourrelet extending forward to the front bourrelet. The assembly includes cartridge case having a multistrand ignition system having a plurality of flexible combustible ignition strand. The strands extend through the propellant charge in the case and extend between the posts of the aft bourrelet into the annular cavity to simultaneously ignite the propellant charge contained therein with the portion of the charge in the cartridge case.

Abstract: A casing bottom for a propelling charge including a circular ring shaped (annular) base plate (1) which accommodates a centrally arranged primer sleeve (7) in a form-locking manner. In order to be able to unload ammunition, particularly two-part ammunition including sub-caliber projectiles, the rear surface of the primer sleeve is provided with a recess for form-fittingly receiving an extractor. Preferably the recess is of a size which can be accommodated on a sub-caliber projectile.

Abstract: An ignition unit is provided with an internal housing defining a chamber in which an ignition charge and an ignition element igniting the charge are accommodated. The housing defining the chamber consists of a cover and a container which are connected to one another along a circumferential groove. A distributor housing is mounted on to the housing forming the chamber, in which distributor housing gas outlet openings are provided which are closed by a cap-shaped cover of the chamber. The V-shaped circumferential groove represents a predetermined breaking or separation position of the chamber, for which reason the cover is separated from the container when the ignition charge is ignited. The cover moves away from the container into a space until it strikes the upper end of the distributor housing. With its movement relative to the distributor housing, the cover releases the gas outlet openings so that the gases and flames can emerge from the ignition unit.

Abstract: A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommodating the propellant charge. A bottom wall of the case member is equipped with a bore aligned with the bore acting as a nozzle. A primer wafer is disposed on the inner surface of the bottom wall, this wafer being thinner in its central zone than in its marginal zone. The central zone of the primer wafer is a region under mechanical thermal stress during compression, the ignition energy being introduced to the primer wafer via this region in the form of hot compressed air from the compression chamber.

Abstract: The invention relates to an ignition device for the propulsive charge of a telescoped piece of ammunition, including a case (2) that is generally cylindrical in shape in which are housed a pyrotechnic composition (3) and a device (4) for ignition thereof. The case (2) has at least one end wall (6) traversed by several channels (10) which each extend along an axis (A1) that slopes in relation to the centre line (A) of the case (2). This device enables all the propulsive charge of a round of ammunition of the telescoped type to be ignited almost immediately.

Abstract: A firing pin initiated primer intended to withstand extreme loading forces, includes a capsule having an opening defined by a continuous, deformable side wall and being deformable by the firing pin impacting upon the capsule at the opposite end thereof, an anvil surrounded the capsule, and having an upper portion with a cross section substantially corresponding to that of the capsule, an unbroken lower suppport surface facing the capsule, at the end opposite to the opening and a sealing surface adjacent to the support surface, at least one radial channel formed in the anvil adjacent the sealing surface and extending from the periphery towards the center and converging into an axial channel defined in the anvil, a compartment defined by the supporting surface and bottom and side walls of the capsule and containing a pyrocharge therein, which has the entire upper surface abutting the unbroken support surface of the anvil, and at least one gap formed longitudinally outside of the capsule allowing for the partial

Abstract: A cartridge assembly is provided, in one embodiment, comprising a combustible casing with an open forward end and an open breach end, enclosed at the breech end by a thin metal stub casing, a projectile assembly mounted in the forward end, an igniter assembly, a resilient obturator pop riveted to the casing, and annular sabot, and a plurality of flexible combustible priming tubes immersed in a propellant charge and extending the length of the casing. In another embodiment, the combustible casing comprises two separate casings joined together with fasteners, each casing having a set of flexible combustible priming tubes, an interface portion defined between the two where respective ends of combustible priming tubes abut. In both embodiments, the priming tubes combust rapidly producing complete ignition of the propellant charge and resultant stable projectile flight.

Abstract: On the inside of a cylindrical envelope, an anvil projects from the base of the envelope and has a flat central member extending parallel to an axial plane of the envelope. Flash-holes are formed in the flat areas of the base on either side of the central member so as to create passages in the vicinity of the axial plane of the cylindrical envelope. The central member has two extensions which have a tapered upper portion and connect to the top of the flat central member, forming a relatively flat end, the lower part of the anvil being connected to the cylindrical envelope, forming an integral part of it.

Abstract: A cartridge assembly is provided, in one embodiment, comprising a combustible casing with an open forward end and an open breech end, enclosed at the breech end by a thin metal stub casing, a projectile assembly mounted in the forward end, an igniter assembly, a resilient obturator pop riveted to the casing, an annular sabot, and a plurality of flexible combustible priming tubes immersed in a propellant charge and extending the length of the casing. In another embodiment, the combustible casing comprises two separate casings joined together with fasteners, each casing having a set of flexible combustible priming tubes, an interface portion defined between the two where respective ends of combustible priming tubes abut. In both embodiments, the priming tubes combust rapidly producing complete ignition of the propellant charge and resultant stable projectile flight.

Abstract: A shotshell casing has a tubular body with an open mouth end and an integral compression formed basewad portion at the other end. A metal case head is preferably installed over the basewad portion. The basewad portion has a circumferential channel in the wall of the body above the end of the basewad portion. This channel forms a cavity beneath the metal case head which collapses upon propellant ignition to absorb a portion of the recoil force produced upon shotshell firing.

Abstract: A cartridge comprises a cartridge case having a bottom, a top, and a hollow interior, the top being open and receiving a projectile, and the hollow interior containing a propellant charge. A metal ignition tube extends from a primer cap on the bottom of the cartridge case for about one-third the length of the cartridge case. The metal ignition tube terminates in an open end. A detonating agent is contained within the metal ignition tube, but does not completely fill it. An empty channel is formed in the propellant charge and extends from the open end of the metal ignition tube to within proximity of the projectile. Preferably, the empty channel is constituted by a closed tube having walls made from a combustible material. When the cartridge is fired, a darting flame is produced in the metal ignition tube which passes through the open end unhindered into the empty channel, thereby igniting all of the propellant charge surrounding the channel practically simultaneously.

Abstract: A control system compensates for temperature dependent propellant burning characteristics by adjusting the chamber volume available to the propellant in an ammunition round. The control system includes a control tube housing, a piston assembly slidably mounted relative to the housing for movement through a drive stroke and being drivingly coupled to a trailing end of the projectile, and components responsive to the temperature of the round for adjusting the length of the drive stroke of the piston assembly in proportion to the temperature and thereby adjusting the position of the projectile and volume of the chamber in proportion to the temperature of the round.

Abstract: A combustible bayonet type primer for combustible cannon cartridge cases comprises a primer head assembly adapted to be inserted in a cartridge case, a tubular housing made of a combustible material, an igniter strand axially disposed in said housing, and a confining means for confining one end of the igniter strand so that the initial ignition rate is about 1000 m/s. The ignited strand in turn ignites a black powder charge contained within a cloth bag within the tubular housing. The housing is an unpressurized container for the igniter strand and the black powder charge and is consumed during the burn of the propellant bed along with the igniter strand and the combustible case.

Abstract: An apparatus is provided for a primer for igniting a propellant charge of an ammunition unit which includes a cartridge case, a shell located in the forward end of the cartridge case, a tracer cartridge secured to the rear surface of the shell, a propellant charge in the cartridge case, a primer having an elongate primer tube extending in the case through the propellant charge and a space defined in the longitudinal direction of the case between the tracer cartridge and the primer tube. The apparatus comprises a sleeve member having a first end portion mounted onto a forward end of the primer tube and a second end portion adapted to be applied over the tracer cartridge and a partition member provided inside the sleeve member intermediate the end portions for preventing displacement of the sleeve member with respect to the primer tube and therefore preventing collision between the tracer cartridge and the primer tube.

Abstract: A loading strip (1) for supplying individual explosive powder charges in a setting tool is formed of an elongated belt-shaped member (2). The member has openings (2a) therethrough with a hollow receptacle (3) projecting outwardly at each opening from one surface of the member (2). The interior of the hollow receptacle (3) in combination with the corresponding opening (2a) form a space for holding an explosive powder charge. Annular gap (2b) encircles each opening (2a) and extends inwardly from the opposite side of the member from the receptacles. A bulge-like projection extends into the space formed by the receptacle and the member. The projection has a hollow recess (2c) located eccentrically relative to the opening and the hollow space and faces the opposite side of the member (2). An ignition medium (6) is placed in the hollow recess (2c). A base plate (7) forms a closure for the explosive powder charge space and the ignition medium hollow recess.

Abstract: This invention provides an annular piston, annular control valve, liquid propellant gun system, having a dual angle injection mechanism to provide both bore and chamber gas requirements with a single injection control valve. The dual angle feature assures a stable combustion zone. A flexible lip on the projectile is used in conjunction with the dual angle injection mechanism to positively eliminate backflow of propellant through the injection mechanism during the ignition phase of the gun cycle.

Abstract: A ring fuze for firearm ammunition comprises a hollow fuze ring, which contains a primer. A functionally reliable ring fuze which can easily be manufactured and can be used without a need for a separate abutment is substantially U-shaped in cross-section and its axially extending inner leg and preferably also its bottom are thicker than its axially extending outer leg.

Abstract: Linear ignition tube suitable for the ignition of long propellant beds. The tube comprises an elongated tubular member having a ratio of interior diameter to wall thickness of at least 4. The ignition tube is provided with a plurality of ignition strands formed of an oxidizable ignition material at a density of at least 2 strands/0.001 in.sup.2 of a cross-sectional area of the tubular member. The ignition strands provide a linear ignition rate for the tube within the range of 3000-6000 ft/sec. The tube can contain from 30-50 ignition strands formed of a self-oxidizing ignition material such as nitrocellulose fibers coated with a mixture of an oxidizing component such as a mixture of ammonium perchlorate and a fuel component such as aluminum. An ignition transmission system comprises a plurality of ignition tubes which extend in a longitudinal conjoint relationship in which one tubular member at least overlaps partially another.

Abstract: An improved cartridge for use with explosively-operated industrial tools. More particularly the cartridge includes a gas check having a rigid washer between opposite ends which causes the deformation of the gas check in cooperation with the gases from burning powder.

Abstract: Cartridge ammunition 1 for a grenade pistol includes a casing 10 made, for example, of plastic, the casing having an opening. A projectile 11 disposed in the casing opening and includes a tracer charge and/or delayed-action charge 11b. A primer 13 and a propelling charge 14 the disposed in a cup 12 at the base of casing 10. The cup 12 is composed of two mutually concentric sleeves 12a, and 12b, with the inner sleeve 12b being mounted so as to be slidable in the outer sleeve 12a and extendable in the manner of a telescope. The outer sleeve 12a has a free end section which is provided, with an external thread 100 followed by an annular, predetermined, circumferential break location 12d. The base of projectile 11 includes a sleeve 17 provided with an internal thread which can be screwed onto the outer sleeve 12a of cup 12. A firing channel 12c is provided in the bottom or end wall 12e of the cup-shaped inner sleeve 12b, with such firing channel being oriented toward the tracer and/or delayed-action charge 11b.

Abstract: An improved reduced volume plastic basewad for a shotshell casing includes a generally solid cylindrical plastic body portion, an annular outer continuous skirt portion merging integrally and upwardly from the body portion, and a raised annular inner continuous hub portion merging integrally and upwardly from the body portion. The skirt and body portions define a continuous exterior surface sized relative an interior surface of a plastic tube of the casing for tightly frictionally fitting within the tube at a bottom end portion thereof providing a gas seal with the tube interior surface. The hub and body portions define a continuous interior surface forming an elongated pocket for receiving a primer in a tight frictional fitting relation in the pocket with an upper end of the primer disposed adjacent an upper end of the hub portion.

Abstract: This cartridge includes a tubular casing with a firing pin member fixed within the casing intermediate its ends. A frangible projectile is frictionally and sealingly retained in the front compartment of the casing. A piston is located in the rear compartment and consists of a transverse wall exposed at the rear end of the casing, and of a forwardly-extending sleeve slidable within the rear compartment. A primer cap is located within the piston sleeve and has a transverse deformable wall abutting against a boss rearwardly projecting from the firing pin member. The latter includes passages communicating the rear and front compartments. When a plunger actuated by the firing arm pushes the piston forwardly, the firing boss deforms the primer cap transverse wall and cause detonation of the propellant charge. The propellant gases first move the piston rearwardly to uncover the firing cap housing, whereby the gases are expanded in the rear compartment before reaching behind the projectile in the front compartment.

Abstract: A cartridge (1) comprises a cartridge case (2), which is closed at its rear end and contains a propellant charge (3) and a primer (7). The tip portion of the cartridge case defines a socket (4), which accommodates a full-bore projectile (5). The tip portion (2b), terminates adjacent to the nose of the projectile in an end face that is normal to the axis of the cartridge. That tip portion has an outside peripheral surface, which tapers with a substantially concave contour toward said forward end face. To provide a cartridge (1) which can easily be manufactured and can reliably be fired and can be gas-tightly inserted into the chamber of the firearm, the tip portion (2b) is formed in its rear end portion with a peripheral annular groove (6), which is open to the interior of the cartridge case and which contains the primer (7).

Abstract: Cartridge ammunition 1 for a grenade pistol includes a casing 10 made, for example, of plastic, the casing having an opening. A projectile 11 is disposed in the casing opening and includes a tracer charge and/or delayed-action charge 11b. A primer 13 and a propelling charge 14 are disposed in a cup 12 at the base of casing 10. The cup 12 is composed of two mutually concentric sleeves 12a and 12b, with the inner sleeve 12b being mounted so as to be slidable in the outer sleeve 12a and extendable in the manner of a telescope. The outer sleeve 12a has a free end section which is provided with an external thread 100 followed by an annular, predetermined, circumferential break location 12d. The base of projectile 11 includes a sleeve 17 provided with an internal thread which can be screwed onto the outer sleeve 12a of cup 12. A firing channel 12c is provided in the bottom or end wall 12e of the cup-shaped inner sleeve 12b, with such firing channel being oriented toward the tracer and/or delayed-action charge 11b.

Abstract: Cartridged ammunition 1 for a grenade pistol includes a casing 10 made, for example, of plastic, the casing having an opening. A projectile 11 is disposed in the casing opening and includes a tracer charge and/or delayed-action charge 11b. A primer 13 and a propelling charge 14 are disposed in a cup 12 at the base of casing 10. The cup 12 is composed of two mutually concentric sleeves 12a and 12b, with the inner sleeve 12b being mounted so as to be slidable in the outer sleeve 12a and extendable in the manner of a telescope. The outer sleeve 12a has a free end section which is provided with an external thread 100 followed by an annular, predetermined, circumferential break location 12d. The base of projectile 11 includes a sleeve 17 provided with an internal thread which can be screwed onto the outer sleeve 12a of cup 12. A firing channel 12c is provided in the bottom or endwall 12e of the cup-shaped inner sleeve 12b, with such firing channel being oriented toward the tracer and/or delayed-action charge 11b.

Abstract: A cartridge with a frangible projectile, usable in an automatic or semi-automatic fire-arm, for instance a pistol, wherein the propellant gases are initially expanded to recoil the breech block and then further expanded to propel the frangible projectile without breaking the same until impact.

Abstract: A battery pocket for centerfire sporting ammunition, for example a shotgun cartridge, comprises a cap shell containing a quantity of impact-sensitive priming material, an anvil and a cap chamber having one or more flash holes therein, the or each flash hole being closed by a layer of material that is removable upon, and as a result of, impact-ignition of the priming material. The or each layer preferably comprises a particulate material, such as china clay, in a polymeric binder and the provision thereof renders the battery pockets less mass-explosible.

Abstract: A multi-range ammunition unit for firing at a high angle and with preselected muzzle velocities. The ammunition unit includes at least two partial propellant charges, a first one of which is fixedly mounted to the bottom of the shell casing and the second one or ones of which are fixedly mounted to the bottom of the projectile of the ammunition unit. All partial propellant charges are coaxially arranged with respect to the shell casing. Mechanical and/or electrical ignition means are provided to first ignite the first propellant charge and then selectively sequentially ignite the second propellant charge or charges.

Abstract: Apparatus and method for covering flash holes in a primer battery cup where the anvil is formed integrally with the battery cup. A tooling apparatus including a tubular foiling pin, and a cutting die plate which, in cooperation with the outside rim of the primer battery cup, blanks out an imperforate, covering-medium disk. As the tubular foiling pin continues to descend into the battery cup, the paper is pierced and slit by the anvil point of the battery cup. The blanked and now perforated disk is inserted further into the battery cup by the foiling pin and seated over the flash holes at the bottom of the cup around the anvil.

Abstract: A cased cartridge ammunition ignition booster includes a film of booster propellant that is case-bonded without insulation or liner to the inside wall and base of an ordinary brass, steel or plastic cartridge case and ignited by a conventional primer. Flame spread occurs from the case wall inward through the non case-bonded propellant bed, that is, the bed of the propelling charge.

Abstract: A self-propelling projectile comprising a projectile body at the normally forward end of said projectile, a propellent charge at the normally rearward end of said projectile, and a primer element located between the ends of said projectile for ignition by side firing or percussion; there being means for maintaining said components in integrated relationship and with communication between said primer element and said propellent charge whereby upon explosion of said propellent charge the force of the latter will be directed against the base of the projectile body.

Abstract: A partially combustible propellant charge igniter in which combustible ignition-conducting tubes can be more advantageously separated. The igniter includes a metallic bottom piece accommodating an igniter charge therein, a centrally arranged ignition gas guide chamber in communication with the igniter charge for guiding ignition gas therefrom and a combustible ignition-conducting tube accommodating a propagation charge. The ignition-conducting tube is inserted into the bottom piece and extends outwardly therefrom with the propagation charge being arranged in the region of the ignition-conducting tube which extends outwardly from the bottom piece.

Abstract: This invention concerns an improved round for use in liquid propellant gu The improved round comprises a projectile attached to a carrier which is shaped like an abbreviated cartridge case. The carrier has a plurality of injection ports that communicate to an expandable volume. Sealing means prevent the escape of liquid propellant from the expandable volume which upon injection causes the projectile to be pumped to a forcing cone leaving the carrier behind. Several ignition means are used employing Boxer, Berdan or electric primers.

Abstract: An impact sensitive ignition device with an amplifier charge including a housing having a bottom and side wall, the side wall having a shoulder. An igniter is disposed in the housing at the bottom thereof with an anvil positioned in the housing for cooperation with the igniter. The anvil has at least one aperture therethrough and is supported on the shoulder of the housing. A sleeve member is disposed above the anvil and has an open end with a flange thereat, the sleeve member being coupled to the housing at the flange thereof, and the amplifier charge is disposed in the sleeve member.

Abstract: A T-joint having a two-part housing applicable to a pipe contains a member adapted to cut a hole in the pipe when acted upon by an explosive charge to provide a branch conduit from the pipe. The explosive charge is contained in a nut attachable to the housing and is ignited by a percussion cap. The bottom portion of the nut is provided with three concentric recesses, each one smaller than the preceding one. The first recess holds the charge, the second recess holds a breech member for the percussion cap, and the third recess holds an anvil for firing the cap.

Abstract: Apparatus and method for covering the flash holes in a primer battery cup, particularly where the anvil is formed integrally with the battery cup. Tooling apparatus is provided which includes a spring-loaded punch positioned and slideable axially within an outer punch. A covering medium such as paper is delivered to the tooling station as a strip where it is pierced and slit by the spring-loaded inner punch and blanked by the outer punch. The blanked portion is inserted into the battery cup and seated over the flash holes at the bottom of the cup around the anvil.

Abstract: An end cap for a tubular container having a deep drawn flanged cup adapted to receive an igniter device for igniting the explosive contents of the container, such as the propellant for generating gas for expanding an air bag in a vehicle passenger restraint system. The cup has in its bottom wall, a centrally located aperture normally sealed by a composite laminate of plastic film and metal foil that is rupturable by the signal from the igniter device. A plastic annulus interposed between the igniter device and laminate protects the latter against frictional erosion by rubbing action of the igniter device through environmental vibrations transmitted to the propellant container.

Abstract: A self-propelling projectile comprising a projectile body at the normally forward end of said projectile, a propellent charge at the normally rearward end of said projectile, and a primer element located between the ends of said projectile for ignition by side firing or percussion; there being means for maintaining said components in integrated relationship and with communication between said primer element and said propellent charge whereby upon explosion of said propellent charge the force of the latter will be directed against the base of the projectile body.

Abstract: A propellant charge igniter includes a casing that contains a central contact member, an igniter element, a sealing element associated with the igniter element, and a powder charge. The sealing element has on a side facing the powder charge, an annular collar in sealing contact with an inner wall of the casing.

Abstract: A primer assembly for a shot gun shell, comprises,(a) a one-piece unitary plastic outer cup defining an axis and having a cylindrical side wall and a bottom wall,(b) and a plastic anvil plate extending in an axial radial plane transversely within and crosswise of the cup interior, the plate having an anvil tip facing toward the mouth of the cup,(c) the anvil plate being integral with the cup side wall and bottom wall so that the plate and cup have one-piece unitary construction.

Abstract: Apparatus is disclosed for positioning and protecting a plurality of flexe burn cords in an ammunition shell. The burn cords ignite propellant in the ammunition. The positioning apparatus includes a closing plug which is secured to the base of the ammunition shell, a cover plate which extends over a cavity in the closing plug, and a plurality of legs which secure the cover plate in place. The burn cords extend into the closing plug cavity through openings in the plug, and are ignited by a separate combustion initiator which is also secured in the shell base. This positioning apparatus allows for safeguarding of the ammunition shell against inadvertent ignition by removal of the combustion initiator.

Abstract: A propellant charge igniter is provided with a metallic igniter tube which is consumed along with the main propellant charge. The combustible igniter tube is flexibly attached to a conventional primer head. An elastomeric tube, a springreinforced tube, or a tube impregnated with a wire mesh can be used to achieve a flexible connection. These tubular elements may be bonded to the primer head and igniter tube, or mechanically attached by means of threaded couplings which are crimped over the elastomeric tubing.