Abstract: An improvement alignment device in an automatic weapon comprises a boss on the weapon barrel and an aligned entry slot, crossover slot and retention slot in the barrel support.

Abstract: A recoil shock absorbing cushion for attachment to a gun stock makes use of a jacket of yieldable material having a chamber in which is lodged a shock absorbing filler. The chamber has an opening which faces the gun stock. A plate covers the opening and has its side edges bonded to complementary edges of the opening. Screws are employed to fasten the pad to the end of the gun stock.

Abstract: A device for generating acoustic pulses by driving suddenly into a body lowered in a well a piston having a face in contact with the liquid contained in the well and adapted for sliding inside said body. The device comprises a valve securely fixed to the piston, a second piston and a hydraulic system disposed completely in the body and comprising principally a pump, electro-valves, an equalizing cylinder, a low pressure reservoir and supply circuits, for moving the valve and the piston to a set position and for immobilizing it intermittently.

Abstract: A proven sporting type shotgun with the stock removed therefrom converted to a military combat type weapon by addition of a retrofit assembly which includes a retrofit housing containing the trigger of the basic sporting shotgun and at least a portion of the shotgun receiver. The trigger of the shotgun is operated by an elongated trigger connector assembly operably connected to a primary trigger supported on the retrofit housing forward of the shotgun trigger. The gun safety mechanism includes a blocking cam biased to a blocking position wherein it engages an abutment surface on the trigger guard of the shotgun to prevent movement of the shotgun trigger to its firing position. A cam roller carried by the trigger connector assembly cammingly engages the blocking cam during inital rearward movement of the primary trigger to move the blocking cam to a releasing position relative to the shotgun trigger.

Abstract: A rifle stock having its forearm, mid-stock and butt section comprised of a one piece plastic structural framework together with attached insert panels. The plastic framework is a lightweight readily moldable structure consisting of web walls having thicknesses, spacing and openings to facilitate such fabrication. Alternatively, the framework can be made of two or more framework elements fastened together.The framework has border recess areas for receiving panels of wood or other materials which panels are configured to fit into the recess areas and to be fastened to or urged against the framework recesses to strengthen the rifle stock and provide a more secure feel and pleasing appearance.

Abstract: A ring (9) serves to support a case (1) during pressing of a charge (4) of a warhead. On the side, ring (9) is arranged around the case (1), against which a pressing force is exerted. The inside diameter (d) of ring (9) is smaller than the outside diameter (D) of the case at permanent deformation of the case during pressing without ring (9).

Abstract: For firing bullets or cartridges of different lengths but the same caliber, there is provided a barrel which is threaded at both ends and reversible, with different-length bores in each end. There is desirably also a protective cap for the threads at the distal end of the firearm, and also, at each end of the barrel, a lug or projection with opening therein to aid in securing the reversible barrel onto the part of the firearm proximal to the user.

Abstract: A safety device for preventing the unauthorized firing of a weapon, such as a pistol. The device has a hammer, a handle, and a leaf spring inside of the handle. The leaf spring places tension on the hammer, when the weapon is enabled. The leaf spring is held by a stop member, which is movable. When the stop member is moved to a lower position, the spring is released, and the weapon is disabled. The stop member is moved by a strap and a ring, connected to the stop member. The handle must be taken apart in order to return the spring and the stop member to the enabled condition.

Abstract: A trigger assembly for firearms which is externally adjustable to change trigger pull forces for both hunting and competition shooting, and which includes safety features for preventing inadvertant discharge. The trigger assembly is particularly adaptable for use with Mauser-type, bolt-action firearms and includes an over-center linkage mechanism which is geometrically adjustable to vary the pull force of the trigger piece. The over-center linkage mechanism includes a rotatable lever operably connected to the trigger piece, and a collapsible block pivotally coupled to the lever. The block and lever are alignable in supporting relation to the striker locking arm, which in turn holds the striker cocked. The relative alignment of the block and lever determines the amount of trigger pull forces required with the linkage mechanism in supporting engagement with the striker lock arm.

Abstract: A telescopic warhead for a submunition ejectable from a carrier projectile the explosive charge of which is made up of submunitions scatterable and housed in the front portion of the carrier projectile, characterized in that the telescopic head includes a telescopic sliding skirt formed of a plurality of cylindrical elements, which are preferably metallic. The telescopic warhead, during storage, does not reduce the inside space requirement of the carrier projectile which leaves the inner volume available in front of the explosive charge whether the telescopic warhead is in a storage configuration or in an expanded configuration.

Abstract: The present invention provides a gun capable of operating at relatively higher temperatures. The barrel of the gun is made up of at least two layers. The inner layer is of a refractory material which may be a metal refractory or a non-metal refractory. The liner is bonded to an outer jacket material formed of an alloy of nickel, aluminum and molybdenum. The coefficient of expansion of the liner and of the jacket are relatively low so that the gun does not expand extensively when heated by intensive use. The jacket metal is of higher strength at elevated temperature than is the conventional gun barrel steel.

Abstract: Disclosed is a trigger for rifles and similar firearms, which trigger is provided with an arresting element that permits the easy positioning of the trigger into the desired arresting notch of the trigger support provided in the body of the rifle. Three embodiments are presented of variants of the invention, in which essentially, a plurality of arresting notches are made in the trigger support, either beneath it or laterally thereto, and a spring-loaded arresting element with a manually operated tooth is forced into mating engagement with the notches for a constant contact of the two parts of the device.

Abstract: An armour plate (1) comprises cavities (2), which are arranged with a plurality of packing bodies (3) in an irregular or regular shape relative to each other. The packing bodies are hollow-bodied, preferably spherical or tubular, and consist of a non-metallic material, preferably glass or ceramic. The interspaces between the packing bodies are filled out with a plastics, preferably a foam made for example of polyurethane.

Abstract: A muzzle reference system is provided for correcting errors in aiming signals produced by a fire-control system of an artillery gun having a gun muzzle pivotable about a first axis and movable about a second axis extending perpendicularly of the first axis. A laser beam transmitting unit adapted to be mounted on the gun for movement with the barrel about the second axis, directs a laser beam along an optical axis in response to an activating signal. A reflection unit, adapted to be mounted at the distal end of the barrel, reflects a laser beam received from the transmitting unit along the optical axis substantially along a reference optical axis at a predetermined angular position of the barrel about the first axis. A laser beam receiving unit, adapted to be mounted on the gun, receives a laser beam reflected substantially along the reference optical axis and produces signals representative of the deviation of the reflected beam from the perdetermined optical axis.

Abstract: An improved anti-ballistic missile warhead in which the missile structure and warhead projectiles are combined into a single entity. The structure, which may be formed of superalloy to resist heat, requires no heat shield, the outer surface being aerodynamically smooth. It is fabricated by precision casting, individual projectiles being pre-formed by casting internal cavities which delineate the projectiles for at least a substantial part of the thickness of the casting. Figuratively, the combined missile structure and warhead is in the form of a pineapple or hand grenade which is "inside out". The explosive may be cast in place or installed separately within a thin canister. Because there is no skin to pierce, less explosive is required and dispersion is substantially reduced.

Abstract: A carbine comprising an improved stock assembly kit combined with a barrel and action assembly of preselected generic style or configuration, preferably that of a U.S. M1 carbine. The improved stock assembly includes a buttstock comprised of opposed concave half-sections which embrace and capture the trigger, receiver and operating slide mechanisms of the barrel and action assembly in upside-down orientation. A trigger assembly is mounted to the barrel forwardly of the buttstock section and is coupled to the trigger mechanism of the barrel and action assembly by a trigger slide which extends through the buttstock section. A forehand stock section is comprised of an opposed pair of stock half-sections which embrace that portion of the trigger assembly which engages the barrel and form a cavity for cooling air surrounding the barrel which extends therethrough.

Abstract: A firearm employs a gun recoil apparatus wherein the comb portion of the stock is fixed relative to a butt end plate. The stock includes a base portion movable with respect to the comb portion. The base portion has at least one guide bore therein which extends longitudinally with respect to the base portion. The butt end plate includes at least one guide rod affixed thereto which is received and slidable within the guide bore. Means are included for fixedly securing the comb portion of the stock to the guide rod whereby the base portion can, upon firing, move relative to the comb portion and butt end plate. Means are provided for adjusting the height of the comb portion above the base portion.

Abstract: A generally round handguard assembly (10) for a rifle barrel (18) has substantially identical bottom and top mating sections (26, 28). The handguard assembly has a shell with an upper and lower row of vent holes (36) formed by two shell sections (31), an outer liner, formed by two outer liner sections (35), with upper and lower rows of vent holes (58) and an inner liner, formed by two inner liner sections (33), with upper and lower pairs of laterally opposed rows of vent holes. An outer annular volume (94), an intermediate annular volume (92) and an inner annular volume (90), which are in fluid communication, are defined within the shell by its inner periphery and the liners. Air flow in the inner volume cools the barrel and gas tube (22) and air flow in the outer and intermediate volume maintains the shell at a reasonable temperature during repeated firings.

Abstract: The known detachable release mechanisms for rifles are not safe as the firearm might go off as the release mechanism is detached from a firearm that is in a cocked state. The release mechanism according to the invention includes a locking stud (8) placed within the frame (1) of the firearm which stud is movable with respect to the casing (3) of the release mechanism so that when the stud is in a locking position it will prevent the movement of the locking bar (4), as the casing is in a position locked to the frame. In addition, the cocking means include a release stem (6) pivoted within the casing and a cocking member (7) pivoted on the frame (1) which cocking member has been arranged to rest on the release stem as the casing is in a position locked to the frame.

Abstract: An adaptor for attachment to the end of a rifle allows an individual to f from the rifle a different projectile than originally designed for the rifle, without substantial degredation in overall accuracy and throw distance of the rifle. The adaptor has a rifled cylinder which in the typical application will have progressive twist rifling. The tangential force acting upon the projectile within the progressive twist rifling area has a semi-elliptical shape and an exit value of approximately zero. An adaptor ring and outer shell are preferably employed to mount the rifled cylinder to the rifle and for aligning the adaptor axis and rifling with the rifle barrel axis and rifling.