Abstract: An improved ammunition data transmission system includes alternately applied parallel sources of high frequency of alternating current (AC) voltage and direct current (DC) voltage. The high frequency AC voltage is applied first to provide updated data and to activate the electronic control package for the round in the projectile. the DC voltage then activates the electric primer system for igniting the propellant charge to fire the round. Both the electronics control package and the electric primer system are connected in parallel with the source of AC voltage and, in the preferred embodiment, the parallel connected circuitry contains a capacitor to prevent DC voltage from reaching the electronics control package and an inductor for preventing AC voltage from reaching the electric primer system.

Abstract: A baseball pitching machine including a metal cart that rides on a plastic elliptical track wherein the metal cart carries a baseball and is controlled by a series of switches that command a rectangular-shaped electromagnet mounted on the plastic track and having an opening. The electromagnet is turned on via a switch and the metal car accelerates toward the electromagnet till it engages a projection mounted on the track which turns off the electromagnet. The momentum gained by the cart then carries the cart to a curve of the elliptical track where the baseball is projected as the cart goes around the curve of the track. After the cart protects the ball the metal cart proceeds along the track to the starting point where the cart is ready to reload with another baseball and the operation starts over with the switching on of the electromagnet.

Abstract: Equipment for a gun loader, which incorporates a coil connected through the intermediary of a wire to a plotting apparatus, and through the utilization of which it is possible to set the fuze of an article of ammunition from the equipment of a gun layer or aimer. Inventively, the above-mentioned object is readily attained in that the coil is fastened at such a first location on an equipment which is worn by the gun loader, with which the ammunition fuze comes into contact during the handling of the ammunition during the loading sequence; in that the plotting apparatus is fastened at such a second location on the equipment which is easily viewable by the gun loader; and that between the plotting apparatus and the equipment worn by the gun layer there is provided either a wire-connected or wireless signal transmitting path.

Abstract: A time delay mechanism force fuze wherein the mechanism comprising an encoder ring, having an inner surface with a predetermined mask pattern of lands and grooves, is locked by a spring lock exerting pressure in a radially outward motion, thus enhanced when the fuze is exposed to the influence of dynamic forces from a gun, is shown. The spring lock cooperates with a lock pin such that a radially inward deflection of the lock pin deflects the spring lock so that the encoder ring with a reaction surface is unlocked and can be fully rotated by a setting collar acting through a detent spring on the reaction surface. If the encoder ring is locked, the detent spring is deflected over the reaction surface of the encoder ring when the setting collar is rotated, thereby preventing the encoder ring from being changed. A plurality of actuators, which determines a digital word that represents a length of time for a time delay in a digital timing circuit for the fuze, is actuated by the predetermined mask pattern.

Abstract: A projectile having a light-settable photodetector assembly, in the form of a plurality of photovoltaic cell units mounted internally of the projectile, with corresponding respective light passageways, formed preferably by optical fibers, connecting between the exterior of the projectile and the photocell units. Circumferential angular position indexing means is provided on the projectile for index location of an external light source setting device therewith. Each photodetector also electrically connects with an electrical signal storage unit, in the form of a capacitor, which is activated by light acting on the photodetector, thereby enabling inputting and storage of a selected composite digital signal.

Abstract: In a fuse for projectiles, a timing ring is mounted rotatably around the longitudinal axis of the fuse, whereby the ignition time or the ignition delay time may be set. To resist rotation of the set timing ring, the timing ring is secured by means of a friction system comprising a friction ring with a friction nut abutting against it. By screwing-down the friction nut, a frustoconical outer surface of the friction nut bears against a frustoconical inner surface of the friction ring to increase the resistance to rotation of the friction ring and thus the timing ring.

Abstract: A system for manually setting a timing value of an electronic fuze for an artillery projectile prior to firing without tools or electric power, and for displaying the set timing value in standard decimal format. Two adjacent setting rings, disposed about the outside of the fuze housing, are interconnected together with the housing so that one ring rotates with the other ring when the other ring is manually rotated in one direction about the housing axis, but is prevented from rotating when the other ring is rotated in an opposite direction about the housing axis. Each ring carries a plurality of numbers disposed about its outer periphery such that one of the numbers is axially aligned with an indication mark on the fuze housing at each setting of the ring. The two series of numbers are oriented laterally so that the two numbers aligned with the indication mark constitute the desired timing value.

Abstract: A device for transmitting signals to a fuse (1), comprising a magnetic circuit and three non-magnetic circuits. The magnetic circuit comprises a coil (5) for transmitting an energy signal which will be recovered by a coil (3) inside the fuse. The three non-magnetic circuits comprise infrared emitter receiver cells mounted on supports (12, 13, 14) outside the fuse, and on supports (6, 7, 8) inside the fuse. These cells respectively co-operate for emitting and receiving information carrying signals, which are thus separate from the energy signal.

Abstract: A device for transmitting signals to a projectile fuse (1) by induction comprises a coil (5) for emitting an energy signal picked-up by a coil (3) inside the fuse. This coil (3) is wound on a first magnetic core (2). A second magnetic core (6) carries three receptive coils for information carrying signals. This information is emitted by three coils (19,20,21).This arrangement permits separating the transmission of the energy signals on the one hand and the information carriers on the other hand.

Abstract: A desired range is selected prior to firing the projectile carrying the remote set fuze and after firing a Doppler radar provides Doppler pulses proportional to the relative velocity of the projectile. Constant frequency pulses are counted during a predetermined number of the Doppler pulses to provide an indication of the actual velocity of the projectile and the preselected range-to-function is achieved by means of a time-to-function adjustment to compensate for differences between the actual velocity and a predicted velocity. The adjusted time-to-function is transmitted to the remote set fuze in a coded form.

Abstract: A mechanical code convertor, munition arming device using same, and method of transmitting coded mechanical inputs are provided wherein such code convertor has an input member adapted to receive complementary mechanical driving movements, a mechanically locked output member, and apparatus mechanically connected between the input and output members for unlocking the locked output member and providing a desired motion thereof in response to correctly coded mechanical driving movements while maintaining such output member mechanically locked in response to incorrectly coded mechanical driving movements.

Abstract: A fuze setting device utilizes a plurality of detented, rotatable, magnet sitioning time setting rings and an encoding disc for controlling the amount of electrical pulses that a timing oscillator is required to subsequently generate to fill an "and" gate controlled multi-stage counter. The counter after being filled generates a fuze initiating signal. A setback detented electromagnetic pulse generating despin operated sensor assembly is used in combination with the oscillator to generate electrical pulses for partially filling the counters in accordance with the relative angular positioning between the magnetic source setting rings and the pole pieces of electrical coils which generate a stop pulse to regulate the number of pulses necessary to fill the counters.

Abstract: An automatic switching arrangement in electric fuses for projectiles which can be set on at least three different operational functions, for example proximity fuse function and inpact fuse function with two different sensitivities. The electric fuse comprises at least two separate ignition circuits each having an inhibition control terminal connected to the respective ignition circuit so that this circuit functions normally when the associated control terminal is connected to ground and is deactivated when the ground connection is interrupted. The inhibition control terminals are connected to ground through individual fusible wires. Each fusible wire is connected to an electric contact which is accessible from the outside of the projectile through individual different polarity dependent or amplitude dependent impedance elements. To set the electric fuse on a desired function, the projectiles are moved successively past a setting station comprising a voltage generator.