Abstract: An opto-electronic measuring apparatus, in particular for a projectile detonator, for the delivery of a signal upon the reaching of a predetermined distance between a moving body and a surface, whereby the measuring apparatus incorporates a transmitter emitting impulses which are rendered optical through a lens at a transmission frequency; and a receiver with a receiver-amplifier for receiving the portion of these optical impulses which are scattered back from the surface.

Abstract: A sound signal body, for generating underwater sound signals, that includes an explosive body which can be thrown out or released by hand. Within the explosive body is arranged an explosive charge as well as a hand grenade detonator having a pyrotechnical delayed detonator composition. The detonator is explodable at the head of the explosive body by a hammer. The sound signal body is provided with a hydraulic pressure switch which comprises a pressure chamber, at least one inlet which empties into the pressure chamber, and a membrane or diaphragm. The diaphragm is connected with a release bolt, which, through the diaphragm and dependent upon the pressure of the water flowing into the pressure chamber, is movable out of a safety position into an armed position.

Abstract: A fragmentation casing for shells, warheads and the like, in which pre-shaped fragmentations or splinters of hard or hardenable material are embedded in a supporting structure which is formed by a material that surrounds the fragmentations on all sides. This material is adapted in response to the ignition of an explosive charge provided in the fragmentation casing to disintegrate into individual particles to thereby release the pre-shaped fragmentations or splinters. The fragmentation casing includes a shell base body which within the region of a sleeve-shaped portion intermediate the rear portion and the head portion of the shell base body is provided with an outer recess which is cylindrical at least over a portion of the shell. Placed in this recess as a single layer are pre-formed fragmentations, primarily heavy metal balls, together with a material which is hardenable by sintering. These fragmentations placed in the recess are pressed into a supporting structure surrounding the fragmentations.

Abstract: A plug or stopper for bores in rocks or the like, which bores, after the lling, are filled with a self-hardening synthetic material, such as commercially available epoxy resin mixtures, polyester resin mixtures, and cyanoacrylate adhesives. The plug is pressed or driven into the bore and consists essentially of an elastically deformable material, especially rubber or rubber-like synthetic resin. The outer diameter of the plug corresponds to the diameter of the rock bore. The plug tapers mainly toward the front and is provided on its outer circumference with grabbing elements. The inside of the plug is provided with an axial bore which becomes narrower toward the back. A closure member which serves as a valve body is axially displaceably arranged in the plug in such a way that it seals off the axial bore when pressure is directed toward the back.

Abstract: A separating device for separating the ring-shaped press skin from a composite extrusion disc comprising a press disc and a stripper disc, especially for copper containing alloys and difficult to press metals and alloys, according to which the press disc is spaced from the stripper disc by an annular intermediate space for receiving the press skin. The device includes a separating head with a passage or recess into which project two blocks located opposite to each other. When the combined extrusion disc on its way through the passage passes between these blocks the projecting blocks enter the intermediate space for stripping off the press skin. The distance between the straight guiding means of the blocks is located within a range of from the length of the inner diameter of the combined extrusion disc to a length composed of the length of the inner diameter plus about the thickness of the press skin.

Abstract: A device for removing the press rest from the front side of a press disc for extruding tubes which has a substantially plane rear surface opposite the front side of the press disc. This disc comprises supporting means for supporting and holding the press disc from which is stripped a press rest. The device also comprises shearing means having a shearing surface which, when the press disc from which the press rest is to be stripped, rests on the supporting means, defines an obtuse angle with the rear surface of the disc. The disc and the shearing means are movable relative toward each other so as to cause the shearing means in response to such movement to strip the press rest off the press disc.

Abstract: A ring closure arrangement for the breechblocks of large-caliber barreled weapons; including a closure seal ring having an angled profile in a longitudinal axial section thereof, with the seal ring being prestressed at a closed breechblock position for sealing the end of the barrel against the breechblock. A recess is formed in the breechblock, the seal ring being axially displaceable within the recess; and actuating means being located in the breechblock for imparting axial movement to and pressing the seal ring against the end of the barrel.

Abstract: An electrically operable alarm provided for a clock and includes a clock operated switch for turning the alarm on at a selected time. The electrically operable alarm includes an oscillatory circuit which, when oscillating, causes the alarm to sound and when not oscillating, causes the alarm to be silent. A bistable sweep circuit is operatively connected to the oscillatory circuit and goes to a first condition when the clock operated switch closes and in which condition the alarm sounds. A manual switch is provided which, when open momentarily, will cause the bistable switching circuit to go to a second condition in which the alarm remains silent until the clock operated switch again closes the next day. The manual switch is adjustable for preventing the alarm from sounding when the clock operated switch closes.

Abstract: A priming arrangement in a jacket-or a caseless powder body or charge for small-bore weapons. In a caseless powder body, provision is made for the firing pin, at ignition misfire, to penetrate into the powder charge, however, being totally encompassed and screened by the cylindrical sleeve and the primer cap. In accordance therewith, the powder is protected from the hot tip of the firing pin.

Abstract: A rotatable cartridge chamber for a firearm type weapon in which the chamber is rotatable in the weapon at the rear end of the barrel and has cartridge chambers therein. The chamber receives cartridges from a magazine parallel to and adjacent the barrel in one rotated position and in another rotated position presents the cartridges projectile end foremost to the rear end of the barrel.

Abstract: A projectile having a chamber containing a propellant charge with an electric igniter and also having a chamber containing an explosive charge with a time delay fuse. The chambers are separated by a wall in which there is a firing pin actuated by pressure from the propellant charge when ignited to start the time delay fuse. The projectile has a safety pin locking the firing pin in ineffective position and which is withdrawable to arm the projectile. The fuse has a detonator spaced from the firing pin and a heat resistant resilient disc is interposed between the firing pin and detonator and is connected about the periphery to the wall on the side facing the detonator while a passage through the wall equalizes the pressures in the chambers.

Abstract: A tubular firearm in which a striker is guided in the bore of a bottom section of the cartridge chamber housing while the bottom section has a longitudinal bore therein with a chamber for receiving and storing a viscous fluid. A striker is reciprocable in the longitudinal bore and is provided with recess means while means, for instance a cam, is operatively connected to the striker for moving the same from a starting position to a striking position. The arrangement is such that when the striker occupies its starting position, the recess means are located within the region of the chamber adapted to receive and store viscous fluid. According to an embodiment of the invention, the striker is connected with an impact member through a joint having three degrees of freedom.

Abstract: A weapon having a tiltable cartridge chamber with sealing rings at opposite ends of the cartridge chamber for sealing engagement with the weapon barrel and with a head. A clamping lever is tiltably mounted on the chamber and is connected to the sealing rings for movement of the sealing rings to and from sealing position. A compensating mechanism is interposed between the lever and the sealing rings so that when one sealing ring seats, movement of the lever can continue and advance the other ring into seated position.

Abstract: A wire cable chain in which spaced links are connected by wire cables. Resilient cushion structures are provided extending between each pair of adjacent links. Each link has a transverse groove on the cushion structure side and each cushion structure has a metal flange at each of the fore and aft edges insertable in one end of said groove and slidable in the groove into fully inserted position. An abutment stops each cushion structure in inserted position in the chain and cams on the cushion structure cooperate with abutment shoulders on the chain links to lock each cushion structure in inserted position.

Abstract: A circuit for controlling the electric fuse of a projectile which is fired from a weapon barrel having a control coil at the muzzle. A receiving coil in the projectile is energized in conformity with the degree of energization of the control coil and causes an ignition capacitor to develop an ignition voltage in conformity with the degree of energization of the receiving coil. The instant at which the ignition capacitor develops an ignition voltage thereon and causes detonation of the projectile is thus dependant upon the amount of current supplied to the control coil on the muzzle of the weapon barrel.

Abstract: A divisible guiding and connector arrangement for track laying chains of track laying vehicles, in which tubular bodies surrounding sections of successive chain bolts between the pertaining chain links are vulcanized onto the aforementioned chain bolt sections. The tubular bodies are firmly interconnected by connecting means, e.g., by screw means or by clamping elements interconnected by screw means.

Abstract: A safety device for an electrically operable projectile fuse in which a primer pin in the form of a firing pin is axially displaceable in the projectile while a detonator cap near one end of the primer pin is adapted to be ignited by impact of the primer pin thereon. A spring biases the primer pin away from the detonator cap while a propelling charge near the other end of the primer pin is electrically ignitable to drive the primer pin into impact with the detonator cap. The primer pin is latched in the projectile with the spring compressed and rotation of the projectile in flight will release the latch. When the primer pin is released it bridges a pair of contacts and completes a circuit from a piezo electric crystal through the propelling charge whereby the projectile will detonate upon impact by igniting the propelling charge and driving the primer pin into impact with the detonator cap. The detonator cap moves into registration with the primer pin in response to rotation of the projectile in flight.

Abstract: A twenty-four hour digital display in which the numerals for the display are carried by a 1-hour barrel and a 10-hour barrel which are stepped by a stepping device. A steppable visor driven in steps by the 10-hour barrel covers part of the time the 1-hour barrel which has a function of the time display. The visor itself carries numerals for indicating single-digit hours. The stepping device includes a gearing and a shaft which serves simultaneously as a locking device for the two barrels.

Abstract: A twin track laying chain, in which the chain bodies provided with guiding mandrels are interconnected by connectors adapted respectively to be received by the tooth spaces of toothed gear rings respectively associated with the two chains of the twin chain. The two chains are so offset relative to each other in the longitudinal direction of the two chains that the teeth of one of the toothed gear rings are in alignment with the tooth spaces of the other one of the toothed gear rings.

Abstract: A setting mechanism incorporated in a digital display device which includes a movable first digit carrier; a motor driving the first digit carrier in a normal digit-advancing operation; and a movable second digit carrier. The setting mechanism has a drive member continuously driven by the motor, a clutch connected between the drive member and the second digit carrier. The clutch, when in its engaged state, couples the drive member to the second digit carrier for imparting a setting motion to the latter; and a manually operable actuator connected to the clutch for operating the same.