Abstract: The weapon barrel comprises a liner and at least one jacket tube. The liner is made of a highly wear-resistant material, like a cobalt or nickel base alloy, and the jacket tube is made of a tough alloy, like steel. In the manufacturing process the liner material is packed into the jacket tube in the form of a powdery material which may be pre-pressed or pre-sintered. The packing is arranged such as to leave a central free space in the jacket tube, and the jacket tube may be surrounded by an encapsulating tube. The jacket tube or the encapsulating tube is closed either before or after evacuation, and the closed tube arrangement is subjected to a combined heat and pressure treatment at temperatures of at least 900.degree. C., but below the melting point of the relevant materials and at pressures of at least 900 bar. The compound body thus obtained is formed with a full-area metallic bond between the liner and the jacket tube.

Abstract: An explosive, fragmentation structure having means for selectively controlling fragment size and configuration. The structure includes an outer casing having an inner surface defining a chamber and further includes means for propagating shock waves across the inner surface from a selected one of two detonation points with the chamber. Means are provided for directing shock waves, propagated from the first detonation point, against the surface in a first pattern of segment-defining lines and for directing shock waves, propagated from the second detonation point, against the surface in a second pattern of lines which define segments larger than those of the first pattern.

Abstract: A holder is disclosed for a mine fuze for an antitank mine, in which the mine fuze incorporates a booster charge, a detonator for initiating the booster charge, and a spring-biased firing pin for initiating firing of the detonator. The holder is dimensioned to fit into a mine-fuze location provided in the antitank mine, where the booster charge is in fuzed relationship with the explosive charge contained by the mine. The holder is also provided with connectors for initiators for initiating one or more explosive charges located in the ground, the booster charge being in fuzed relationship with the initiators when the holder and mine fuze are attached.

Abstract: A portable shooting weapon comprises a releasable firing mechanism and a cooperating trigger and pin for releasing the firing mechanism. The trigger actuates the pin when the trigger is moved by a finger of a shooter. The trigger comprises a first, downwardly extending body portion fulcrumed to the shooting weapon. A second body portion is slidingly supported in the first body portion so that the second body portion is shiftable in a fore and aft direction with respect to the first body portion. The first and second body portions of the trigger are connected together in an easily disengageable manner at a number of pre-set relative positions. The second body portion of the trigger projects beyond the first body portion and the extent of projection is adjustable by disengagement and movement of the second body portion of the trigger with respect to the first body portion.

Abstract: In a cartridge feeding device for a repeating rifle, a magazine well is provided in the breech casing in front of the rear barrel end underneath the rear end. Toward the rear, a guide housing is arranged behind the magazine well, this housing has an opening at the top in a zone behind a breech head of the rifle and, in a rearward half of this opening, two mutually opposed holding lips, the mutual spacing (a) of the latter being somewhat smaller than the case diameter of the cartridge. A loading plate is pivotably mounted in the guide housing, this plate being pivotable upwardly under spring action. The magazine box exhibits at the top an opening extending over its entire length and, in the region of this opening, two mutually opposed magazine lips.

Abstract: A firing mechanism with safety device for firearms, especially sport and hunting rifles and shotguns, with at least one barrel and a firing pin associated therewith and operable by way of a striker member in that the member is movable into an uncocked position, under the influence of the force of a compressed spring, against the firing pin after a trigger lever locking the striker member in a cocked position has been placed into a release position, and with at least one trigger with an associated rocker arm. In order to secure the firearm against unintended firing of shots due to external impact effects, the striker member is fashioned as a slide and is displaceable in the longitudinal direction from a rearward cocked position into a forward uncocked position.

Abstract: An improved safety mechanism for an automatic pistol of the type using a slide for moving and ejecting cartridges. A substantially flat slide guard is fixedly attached to the safety lock and is mounted in a spaced apart relationship with respect to the moveable slide. In this manner the fingers of the hand of the user are kept away from the slide when the gun is held in the firing position. A safety lock lever is attached to the slide guard thereby allowing the thumb of the user to operate the slide stop safety in the normal manner. For those pistols having a left and right safety lock lever a slide guard is located on each side of the gun thereby keeping the fingers of the user off the slide regardless of whether the user is using his right or left hand to operate the gun.

Abstract: A firearm (1) comprises a housing (2), a barrel (3), means defining a chamber (5), and a firing mechanism including a trigger (10). The chamber (5) is defined by a chamber member (4), which is separate from the barrel (3) and is mounted in the housing (2) for reciprocation between a firing position and a loading position transversely to the axis of the barrel. In the firing position, a forward end of the chamber (5) coaxially adjoins and is open to the barrel bore and the rear end of the chamber (5) is closed by a closing wall (7) of the housing (2). In the loading position, both ends of the chamber (5) are exposed on the outside of the housing and spaced from the barrel and the closing wall.

Abstract: A firing mechanism having a trigger operated breech block. A crank, connected between the trigger and the breech block, has a first camming surface for moving the breech block forwardly and locking it in a firing position, and a second camming surface for cocking and releasing the firing pin during the breech block's forward movement.

Abstract: A subsurface valve-actuator combination for well production tubing is described. The valve is urged to closed position but held open by a battery-operated latch of the actuator. A receiver-relay in the battery-actuator circuit maintains a switch closed to permit the latch to be energized as long as the receiver-relay receives an electromagnetic signal transmitted from the earth's surface. The latch is deenergized upon interruption of the signal and/or if the battery power is insufficient to energize the same.

Abstract: An aerial target vehicle has an aerodynamically stabilized body carrying plural rocket motors. An ignition system for the motors serves to fire the motors in selected groups at selected time intervals. The ignition system uses a capacitor as its sole power source. The capacitor is charged only after the motors are in place and the vehicle is ready for launch. A capacitor-powered logic circuit ignites the motor groups at the selected time intervals. The sequential firing of the rocket motors provides a quasi-maneuverable target with relatively long range and flight time. The capacitive power arrangement is a safety factor that prevents premature firing of the rocket due to transient currents.

Abstract: A grip and folding stock assembly mounted and arranged on a compact gun for facilitating use of the gun in various firing positions. An L-shaped bracket has one end secured to the distal end of a pistol grip emanating from the undersurface of the receiver of the gun, and the other end secured to the undersurface of the rearward end of the receiver. Mounted in this way, the bracket defines a forearm receiving portion for stabilizing the gun while firing. A folding stock is pivotally mounted to the rearward end of the receiver of the weapon. The stock is operative between three positions. In a first position, the stock is folded and brought into close proximity to the pistol grip. In a second position, the stock is placed into a position suitable for shoulder firing. In a third position, the stock is placed into a position suitable for underarm firing. A cartridge magazine of improved construction fits within the pistol grip.

Abstract: A detonator assembly is provided which is usable at high temperatures about 300.degree. C. A detonator body is provided with an internal volume defining an anvil surface. A first acceptor explosive is disposed on the anvil surface. A donor assembly having an ignition element, an explosive material, and a flying plate, are placed in the body effective to accelerate the flying plate to impact the first acceptor explosive on the anvil for detonating the first acceptor explosive. A second acceptor explosive is eccentrically located in detonation relationship with the first acceptor explosive to thereafter effect detonation of a main charge.

Abstract: A small arms caliber reducing adaptor kit including a barrel liner and cartridge insert sized to be inserted into an original small arms barrel and an original cartridge chamber respectively, the barrel liner and cartridge insert having corresponding reduced bores with the bore of the cartridge insert having a nose opening for a pellet and a base opening for a primer - the kit further including a primer seating tool.

Abstract: A pistol grip with a collapsible stabilizing wing pivotally secured to the frame of a pistol and resiliently biased to an open position which is generally perpendicular to the pistol frame. A locking mechanism secures the stabilizing wing in its closed position, parallel to the pistol frame, and a release mechanism is operable to selectively unlock the stabilizing wing allowing it to spring to its open position for two hand firing.

Abstract: The novel method substantially reduces the pressure pulse generated by an implosion of a cavity within a body of water by aborting the implosion. The abortion of the implosion is produced by generating within the cavity an explosion at the instant that this cavity attains its maximum volume.The method can also be used to generate within a body of water an impulsive acoustic signal by generating a first explosion within the body of water to produce therein a powerful pressure pulse and a cavity of very low pressure, and then generating a second explosion within the cavity so as to establish hydrostatic pressure inside the cavity while the volume of the cavity remains within a few percent of its maximum volume.

Abstract: This invention concerns a unique firearm trigger, safety, and stock attachment mechanism and to an embodiment in a semi-automatic blowback rifle where the receiver is mounted in the buttstock, a style commonly referred to as a "bullpup". The trigger is a dual electrical and mechanical design with one trigger lever and a control timer. The safety is forward mounted and blocks the sear. The stock mounting prevents bending moments in the stock to be transmitted to the barrel/receiver assembly. The bull-pup rifle embodiment itself has several unique features including a cheekpiece removable from the stock.

Abstract: A method and apparatus for driving a seismic hydraulic vibrator in which a conventional sinusoidal drive signal in modified in such a manner as to improve vibrator response parameters. The sinusoidal drive signal is modified such that in the regions of the signal proximate the reference axis, the signal will abruptly pass from one side of the reference axis to the other side of the reference axis. This modification is accomplished by summing a square wave signal with the sinusoidal signal to form a composite drive signal.

Abstract: Modifications are provided in the structure of firearms such as breech-loading revolver handguns. Traditionally, these firearms are constructed with mating surfaces in face to face contact, which surfaces must be separated for loading. Where foreign particles are trapped between the flat mating surfaces on closing, jamming results. In one aspect of the invention, these flat mating surfaces are provided with cavities, so that any such foreign matter will fall into the cavities and not prevent the closing of the firearm mechanism after loading. In another aspect of the invention, a series of small vee-type notches, discernible by touch, are formed around the rear edge of a rotary magazine of cartridge cylinder, in a descending sequence in direction opposite to the operative direction of rotation of the rotary magazine when in battery.

Abstract: Successive stages of a missile are held together by an encircling band jod at its ends by an explosive band separation device. Opposite ends of the band are welded to separable parts which interlock with each other. Since the band is held in tension, inclined surfaces on the separable parts force them from maintaining an engagement so that a retaining cover is needed to hold them together. The retaining cover is held by a pair of balls which diametrically communicate with a longitudinal bore. A piston in the bore keeps the balls in cavities in the retaining cover to hold the separable parts together. A power cartridge detonated by an electrical signal displaces the piston the length of the bore and the balls free of the retaining cover. The retaining cover rotates by a resultant upward force exerted by the inclining surfaces. Freed from the retaining cover the tensile force exerted by the band pulls the separable parts apart to free successive stages of the missile from one another.