Abstract: The present invention relates to a multiple function combined weapon, adapted to be used in different uses, characterized in that it comprises a weapon body, supporting a first shot gun or rifle barrel, of reduced length, with the magazine arranged in the central portion of the body. Under the first barrel a second barrel is arranged, of a machine gun type of weapon, the magazine of which is arranged at the front portion of the body. Between the two magazines two triggers are provided which can be actuated for a selective firing, either with the top barrel or with the bottom barrel.

Abstract: A method for increasing the hitting probability of multi-barreled machine weapons, especially for four-gun or gatling-type weapon systems. Through a spreading apart of the middle of hitting point locations of the individual weapon barrels, there can be achieved an improvement in the characteristics of the firing spread. This is attained in that the middle hitting point location of the individual weapon barrels is spread apart in such a manner about the middle hitting point location of all of weapon barrels of a weapon system, that the density of hits remains almost constant at a restrictedly increasing deviation from the middle of the hitting point location of all the weapon barrels. The middle hitting point location of the individual weapon barrels can be spread apart by the amount of the average standard deviation of the diring spread of the individual weapon barrels from the middle hitting point location of all weapon barrels of a weapon system.

Abstract: To permit single firing in a machine gun by a mechanical method, a trip lever is moved by a control surface attached to the weapon housing during the weapon recoil after triggering a shot. This motion causes the trip lever to disengage a coupling on the crankshaft. Because of this, the trigger plate can return to its starting position by means of spring force, independently of the position of the cocking lever. The recoil breech can then be caught by the trigger in the weapon housing. If the cocking lever is moved back, it again couples because of the spring.

Abstract: A semiautomatic gun which can be used to fire two types of ammunition comprises first and second bolts and a selector assembly operated by a user of the gun. The selector assembly selectively permits loading and firing of one type of ammunition. The gun has only a single trigger for firing either of the bolts selected by the selector assembly and the gun may be a combination of a shotgun and rifle or any other desired configuration. Each of the bolts are movable in a forward and rearward direction when fired and have bolt lock-up bearings for preventing such movement at other times. A reciprocable forestock is provided with a forestock lock release. The forestock can be pumped by the operator to initially load a round of ammunition into the chamber selected by the selector assembly.

Abstract: A gun tube thermal shroud for reducing temperature gradients across the gun tube caused by asymmetric external and internal heat flux distributions, which includes an inner layer of high thermal conductivity extending about and along the gun tube in intimate thermal contact with the gun tube. In the preferred embodiment, this inner layer is formed of aluminum wire which is tightly wound about the gun tube and which is embedded in a thermally conductive flexible adhesive. The shroud also includes a middle layer of thermal insulating material and an outer layer of high thermal conductivity material, which may be formed in the same manner as the inner layer.

Abstract: A multiple barrel gun for firing projectiles at an extremely high rate of fire, in the form of a dense cloud of projectiles. In one embodiment, hundreds of gun barrels are rapidly rotated about a fewer number of fixed firing stations. As each group of barrels approach the fixed stations, cartridges are radially fed to the barrels, and the group of barrels are concurrently fired when they become aligned with the stations. During each complete revolution of the multiple barrel gun, all of the gun barrels are successively fired in groups a number of times corresponding to the number of firing stations. The total fire power of the gun for each revolution is accordingly equal to the number of barrels times the number of firing stations.

Abstract: The sub machine gun fires single shots in semi automatic fashion, and also fires fully automatically, with the firing mode being manually selectable. The firing mode selection also includes a safe setting, and there is a grip safety which renders the gun inoperative unless the pistol grip is squeezed. The safeties are configured and balanced so that the gun will not fire if dropped. There is one manually operable latch that allows complete take down of the action. When the receiver cover is lifted with the bolt cocked, the bolt will not accidentally move forward to fire the gun. The slide actuator holds the receiver cover in its open position. The barrel is latched in place by a latch pin that cannot unintentionally be removed from the gun and misplaced. The barrel latch pin can be partially withdrawn to allow removal of the barrel from the receiver.

Abstract: An apparatus for uniforming the heat of a gun barrel includes an heat-pipe type dissipation cylinder attached to an outer periphery of the gun barrel along the longitudinal direction thereof for uniforming the heat of the barrel, and a heat insulating cover coating the heat-pipe type dissipation cylinder for covering an outer periphery thereof and shading the heat-pipe type dissipation cylinder from solar radiation.

Abstract: Cylindrically arranged barrels include feeder rods connected to a wobble plate for reciprocally moving shells into a firing position. A back pressure seal sleeve may be positioned on the feeder rods. The sleeves include a forwardly tapering wall thickness whereby combustion pressures press the tapered wall sealingly against the feeder rods. An alternative sealing arrangement includes cut-off pins for each barrel which reciprocate transversely of the barrel in timed relation with the feeder pins. A cam rotates with a power shaft connected to the wobble plate and a nonrotating housing is positioned on the cam and is connected through linkage elements to the cut-off pins.

Abstract: A gun barrel structure for a tank having improved heat dissipation properties and accordingly improved accuracy. The gun barrel of the tank is surrounded by a cylindrical heat pipe containing a working fluid. The heat pipe may be constituted by concentric inner and outer cylinders with the working fluid therebetween, or by a single cylinder surrounding the gun barrel with the working fluid held between the outer surface of the gun barrel and the inner surface of the cylinder. Preferably, the heat pipe is divided into a plurality of separate sections disposed along the barrel. A wick holding the working fluid may also be employed.

Abstract: A rapid rate of fire, multiple barrel gun employing triangularly shaped cartridges that are fed and ejected transversely to the barrels of the gun. Each barrel has its own separate feed and ejection system, that are driven in common in a synchronized but out-of-phase relationship to successively fire from the different barrels. During each cycle of feed, the cartriges are successively accelerated, then moved at constant speed, then decelerated, and monentarily stopped during firing. The common drive mechanism transfers energy from the feed being decelerated to a different feed being accelerated to more efficiently drive the plural feed and ejection mechanisms at high speed.

Abstract: The invention is directed to an automatic firearm apparatus of the type including a feed system and a rotatable drum driven in rotation by an outer motor, wherein the drum includes a closed contour breech drive ramp. The apparatus includes two follower members cooperating with the ramp, each rigidly mounted on a breech to impart to the breech a reciprocating movement between a feed position, in which it is separate from its respective cartridge chamber, and a firing position, in which it closes the cartridge chamber. The feed system includes a feed mechanism rotating continuously and two distribution mechanisms rotating intermittently. Each of the distribution mechanisms are arranged to receive ammunition from the feed mechanism when stopped and, when rotating thereafter, to supply this ammunition to its respective breech while the latter is in its feed position.

Abstract: This invention provides the provision of a machine gun having a pair of gun barrels fixed to the receiver with a pair of operating mechanism driven by a rocking lever and each operating mechanism including a reciprocating slider which drives a reciprocating gun bolt assembly and a forward stripper which also serves to lock the gun bolt assembly.

Abstract: The loading, firing and ejection of beltless, cased ammunition is facilitated by the use of an oscillating breech having two breech chambers defined therethrough, which breech is disposed between two parallel ammunition chutes. Unfired rounds are provided to a load position in a first ammunition chute and the oscillating breech rotated to align one chamber with the load position. The unfired round is rammed into the aligned chamber, thereby forcing the spent cartridge just fired from the opposing end of the chamber into an eject position in a second opposing ammunition chute. Meanwhile, a second chamber within the oscillating breech is simultaneously aligned with a corresponding one of two barrel bores and fired.

Abstract: A gun with two barrels of different calibers wherein both barrels have a repeater mechanism, manual or automatic, and wherein the weapon has a barrel-selector mechanism which selectively, as desired, brings one barrel into an operative state while at the same time putting the other barrel in an inoperative state. The breech block for the respective barrels are joined together via a cam on the breech block, such that the two breech blocks together constitute a cam mechanism which permits movement of the other breech block toward and away from the first breech block transversely of the barrels, and that the two breech blocks, during repeater-action of the weapon, move together and in parallel in the longitudinal direction of the barrels. The interconnected breech blocks thus together and synchronously lock the two breech blocks in their forward positions.

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: A gun which has an improved firing mechanism which enables it to be completely automatic through ejection of the magazine by eliminating the need for a selector switch. The firing mechanism has a substantially J-shaped hammer with a sear embedded therein. The sear is shaped, preferably hemispherically, at its framework end so that it will fall into a recess in the framework during the firing cycle. The draglink has a curved upper surface which is preferably concave or bowl-shaped. An associated magazine follower has a cam at its front center for tripping a release latch.

Abstract: A plurality of, such as six weapon barrels are rotatively mounted about a central axis or shaft of a multi-barrel weapon, for example, a Gatling gun. In order to achieve a good target grouping the weapon barrels should be focused and twisted or curved. The weapon barrels are held in the desired position by a support apparatus. This support apparatus comprises a first adjustment element for the radial displacement of the weapon barrels with respect to the central axis or shaft of the weapon and a second adjustment element for the tangential displacement of the weapon barrels with respect to the central axis or shaft of the weapon.

Abstract: A remote controlled surveillance and weapon system comprising a tubular, generally annularly symmetrical multiple fire weapon having an optical scope coaxially arranged in the throat thereof. An electronic image sensor is optically coupled with the scope and provides an image to a video surveillance screen at a remote station. Movement and firing of the weapon are performed from the remote station according to a view along the axis of symmetry of the weapon as viewed on the video surveillance screen. In a preferred form diametrically opposed pairs of firing bores are fired simultaneously so as to balance recoil forces about the axis of symmetry and thereby maintain alignment of the weapon and scope with a target being fired upon.

Abstract: A thermal sleeve for a gun barrel is in the form of a cylinder of a substantially rigid thermally insulating material with a series of longitudinally and circumferentially spaced spacer members disposed on the inner face of the cylinder. The spacer members engage with the gun barrel and define an annular gap between the cylinder and the barrel. The sleeve further includes means for sealing the annular gap as well as means for securing the cylinder on the barrel to ensure pressurized contact of the spacer members with the barrel.

Abstract: A weapon for launching a number of grenades, simultaneously or otherwise, includes a plate mounting on which three launching tubes are pivoted in correspondence with their breeches about respective elevating pins. Two of the launching tubes are connected to their elevating pins by ball-joints. The weapon also has a device for elevating the launching tubes and a device for traversing the launching tubes.

Abstract: Pressure damper for recoilless weapon designed to reduce the pressure in the area around and immediately to the rear of the muzzle of the barrel. A container with liquid is placed in the barrel close to its muzzle or in a forward extended portion of the barrel and arranged to be burst when the weapon is fired so that the liquid is suddenly released and mixed with the gases from the powder.

Abstract: A cooling arrangement for the gun barrels of firearms, in particular automatic firearms and high-performance machine cannons. The arrangement includes radially outwardly directed cooling pasageways between the individual projectile chambers provided in the drum in the region of the end portion of the gun barrel axially adjoining the drum, and which are connected with a main passageway in the hollow-bored longitudinal barrel axis for the central cooling medium infeed. Connected to the nozzles of the radially directed passageways, which nozzles extend essentially in parallel with the longitudinal axis of the drum, closure members are interposed in the radial cooling passageways which automatically open and close in dependence upon the drum position and only during firing, whereby the outlet openings of the nozzles positioned in the axial end surface of the drum and, during rotation of the drum, will presently openly communicate for a short period of time with the associated end portion of the gun barrel.

Abstract: A full automatic firearm or submachine gun has a combined trigger, sear and selector mechanism including automatic and semi-automatic bars which are pivoted at their forward end to the trigger, and a sear member disposed therebetween and independently pivotably mounted. A selector member is pivotable among safe, semi-automatic and full automatic fire positions, and is engageable with the bars to effect their pivotal movement as required and is engageable with the sear to prevent its movement in the safe position. The semi-automatic bar, automatic bar and sear have means which are engageable to pivot the sear from engagement with the bolt upon pulling of the trigger, but only one bar is so engaged at any one time. Biasing means bias the sear, semi-automatic bar, automatic bar and trigger to their respective initial or at rest positions.

Abstract: An arrangement for the protection of vehicles against IR-IMAGING equipment by cooling air, in which the hot or warm exhaust gases are surrounded by a laminar flow of cooling air. The outside air which is drawn in by the cooling mechanism or the motor ventilation system, is first moved over the thermally radiating areas of the vehicle, and then to the cooling unit or the motor itself for combustion. Part of the outside air which is drawn in, serves as the laminar cover stream of the transferred heated-up cooling air and/or the exhaust gases. These exhaust gases, the heated up cooling air and the surrounding outside air represents a coaxial system of gas flows. In the center of this system, flow the exhaust gases, and the heated-up cooling air flows in the central annular portion. The outside air is directed through the outside annular flow portion of the coaxial system.

Abstract: A firearm including a basic action system having differential recoil, blow-back operation with moving barrel and a firing mechanism for use in conjunction with the basic action system of the invention or any other type of system operable to fire from a closed-bolt position and an open-bolt position. The basic action system utilizes a single spring which positively positions the bolt and barrel for semi-automatic, closed-bolt firing, while also providing the necessary spring and positioning action for open-bolt, differential recoil, blow-back operation. The firing mechanism of the invention provides for semi-automatic fire from the closed-bolt position, and for full automatic fire from the open bolt position, with a selector to permit selection by the gunner.

Abstract: An arrangement for reducing non-symmetrical, thermally induced strains in a gun tube (12) comprising a heat pipe jacket (18) in thermal engagement with the gun tube to provide both high radial and circumferential thermal conductance from the tube.

Abstract: This invention relates to firearms of the type disclosed in my prior U.S. Pat. No. 3,424,053, granted Jan. 28, 1969, in which the principal parts such as actuating sleeve, receiver, frame and breechblock are made from cylindrical extruded metal tubing and metal rods. The combination of a cylindrical actuating sleeve, breechblock, frame, receiver, floating power cylinder, ratchet counter firing mechanism and other incidental parts are used to form a new action for automatic firearms.This new action consists of a cylindrical sleeve carrying a floating power cylinder and functioning as an extractor port seal, breechblock stop and to actuate the ratchet firing counter. The above-mentioned parts and the breechblock lend themselves to manufacture by the use of automatic lathes and screw machines.The use of an actuating sleeve and floating power cylinder results in a favorable mass ratio, which results in a reliable firearm.

Abstract: An improved automatic pistol is provided with a lever mechanism which causes operation as a burst-firing arm in a safe and reliable manner. This is achieved by forming the disconnector, which releases the sear, with a chamfered and bent end, opposite to the end engaging said sear, in order to co-operate with a trigger bar which has two degrees of freedom in the usual repeating operation, and which is connected in an articulated manner to the pistol trigger. Through a 90.degree. rotation of a selector member, a should on the trigger bar allows the trigger bar only one degree of freedom thus causing the disconnector, which is pivotedly mounted on the reciprocating breech mechanism, to enter into a tangential, instead of perpendicular contact through its bent and chamfered end with the trigger bar. Thus, the disconnector enables continuous firing of the pistol as long as the trigger remains is pressed.