Abstract: The firing circuit comprises a direct current voltage source having negat and positive terminals connected, respectively, to first and second terminals of a firing network. The network comprises first and second resistors connected, respectively, to the first and second network terminals. A diode, a silicon controlled rectifier (SCR), an electrical detonator and a third resistor are connected in series with each other and in parallel with the first and second terminals, respectively, with the anode of the diode connected to the cathode of the SCR, and the gate of the SCR connected to the junction of the first and second resistors. A capacitor and a fourth resistor are connected in parallel with the combination of the SCR and the detonator. In a modification, a Zener diode is connected in parallel with the capacitor.

Abstract: An article for use as a solution releasing control device in a fluid conting medium, such as air containing water vapor, is provided including an inner material composed of solid substance capable of sorbing this fluid and also capable of dissolving in this sorbed fluid, for example a hygroscopic, deliquescent agent such as lithium chloride or a mixture of lithium chloride and the tetrasodium salt of ethylenediaminetetraacetic acid. This inner material is enclosed in a container fabricated of a material which is substantially impermeable to the fluid in the medium surrounding it and is substantially nonwettable by the solution formed from the sorbed fluid and the sorbing agent, for example an essentially hydrophobic film, such as polyethylene. The container is provided with perforations of pre-determined number and size to provide an accurately controlled fluid sorbing and solution releasing device.

Abstract: An electronic key comprises a first binary counter and a first multiplexer or pulse code modulating a uniform clock pulse train to produce a first coded pulse train modulated with a given code. The key is connected to an electronic lock comprising: a second binary counter and a second multiplexer for pulse code modulating the same clock pulse train to produce a second coded pulse train modulated with the same code; an EXCLUSIVE-OR gate to which said first and second multiplexers are connected; a first NAND gate having one input connected to the output of the EXCLUSIVE-OR gate; a flip-flop or a binary counter having its clock input connected to the output of the NAND gate and an inital logical ONE output connected to a second input of the NAND gate; a second NAND gate having one input connected to the output of the flip-flop or counter and another input connected to the output of the second multiplexer; and a binary output counter having its clock input connected to the output of the second NAND gate.

Abstract: The application discloses a sub-missile which breaks up into fragments less han one grain in size and thereby has a lethal effect on personnel. The sub-missiles can be utilized in large missiles and rockets as a warhead by means of a canister so designed that the sub-missiles are dispersed through centrifugal force. The canister is provided with a plurality of control fins for slowing and then rotating the canister in flight, a plurality of rotary tubes and pivoted arms supporting the fins for rotating and pivoting about two different axes, and two separate means for independently actuating the tubes and arms to move the fins to canted, extended positions.

Abstract: A land mine adapted to be deployed by gravity and comprising: a housing hng a hollow cylindrical side wall and two end walls, on either of which the mine may come to rest. A main explosive charge in the housing, a clearing charge located between the main charge and each end wall; explosive firing means; a mechanical gravity-controlled switch including a body formed with a cavity having two spaced outlet passages and an intermediate inlet passage, and a weight movable in the cavity; a firing train connecting each of the outlet passages to one of the clearing charges; and a firing train connecting the firing means to the inlet passage; the weight being movable by gravity when the mine comes to rest to a position wherein the firing train connected to the upper clearing charge is exposed to, and the firing train connected to the lower clearing charge is isolated from, the firing means.

Abstract: In a breech-loading gun loaded by first ramming a projectile into the gun rrel to a firing position therein and then inserting a separate propelling charge, unlimited fall-back of the projectile from the firing position is prevented by means of an annular internal groove in the barrel providing a forwardly-facing shoulder, a rearwardly-facing shoulder carried by the projectile, and resilient means for automatically moving the projectile shoulder outwardly into abutting relation with the barrel shoulder on rearward movement of the projectile from its firing position. In one embodiment, the projectile shoulder is the rear end of a resilient strip extending rearwardly and outwardly from the projectile. In another embodiment, the projectile shoulder is the rear side of a radially-movable spring-biased detent on the projectile.

Abstract: An unknown explosive device is safely neutralized, that is, rendered inoptive, without disturbing the device, by penetrating the device with an explosive-driven captive projectile from a safe distance and injecting liquid nitrogen into the device through the projectile to cool some internal parts below the temperature at which they are operative.

Abstract: A double-ended, high-explosive, anti-tank mine, adapted to be carried into he air, in a projectile, for example, ejected, deployed and come to rest on either end, comprises a housing having a short cylindrical side wall and two end walls removably attached to the side wall, an annular main charge of high explosive material having concave end surfaces lined with hardened metal missile plates, a clearing charge of propellant located between the main charge and each end wall, a tubular booster charge mounted within the annular main charge, and a fuze mounted in the housing and comprising a conventional proximity fuze for sensing the presence of a tank and producing a firing signal, a firing circuit including a gravity-controlled liquid mercury switch having at least three electrodes, and a battery connected to the two clearing charges in such manner that the upper clearing charge is initiated in response to the firing signal, prior to initiation of the main charge.

Abstract: A decoding circuit comprises: a gated oscillator, designed to generate a are-wave pulse train having a long first positive pulse followed by short spaces and short positive pulses, having its output connected to the clock input of an oscillator counter and its control input connected to the output of a flip-flop; a signal input terminal connected to the SET input of the flip-flop and also to the clock input of a signal counter; a first three-input AND gate having two inputs connected, respectively, in opposite phase to the first count outputs of the two counters and its third input connected through an inverter to the oscillator output; means connecting the gate output to RESETS of the flip-flop and the two counters; a second three-input AND gate having two inputs connected, respectively, in opposite phase to the Nth count outputs of the two counters and the third input connected directly to the oscillator output; means connecting the second gate output to the RESETS of the flip-flop and counters; a third thr

Abstract: A double-ended mine, adapted to be carried by a projectile, deployed by gity, and come to rest on either end, comprises: a housing having two end walls and a connecting side wall; an annular main high explosive charge, lined on each end with a concave missile plate, in the housing; a clearing charge located between the main charge and each end wall; a fuze body mounted in the annular charge; an arming slider slidable in an axial channel in the body between safe and armed positions; a slider spring; two spin-released bolts in the body for locking the slider in safe position prior to projectile launch; a spring-biased pin for preventing rotation of the slider and for locking the slider in armed position; an electrical fast-fire detonator mounted in a first radial channel in the body; a first explosive lead mounted in a transverse passage in the slider in alignment with the detonator in armed position; a mechanical gravity-controlled switch and two combustible cords connecting the first explosive lead with the c

Abstract: An analyzer, for measuring the concentration of a particular material in a ample, has its analog voltage output connected to the analog input of a multiplying digital-to-analog converter (MDAC) whose output is connected to a voltmeter and to one input of a voltage comparator having its other input connected to a potentiometer and battery producing a reference voltage somewhat less than the known output voltage of the sample. The comparator output is connected to two gates which control the transmission of electrical pulses from a generator to the UP or DOWN inputs of a binary UP/DOWN counter, having N digital output channels connected to N digital input channels of the MDAC, in such manner that the counter counts UP, increasing the gain of the MDAC, when the MDAC output voltage is lower than the reference voltage, or counts DOWN, decreasing the MDAC gain, when the MDAC output voltage is higher than the reference voltage.

Abstract: A bomb container is made up of: a first open-ended hollow cylinder of steel aving lifting ears, and adapted to rest on one end or the side; and a second open-ended hollow cylinder of steel positioned completely within the first cylinder, with their longitudinal axes substantially perpendicular to each other, and the ends of the second or inner cylinder contoured to closely fit the inner wall of the first or outer cylinder. The outer cylinder is mounted on a pair of elongated channel brackets, having struck-out ears or straps attached to the outside of the inner cylinder, and mounted on a flat support, such as a truck or trailer bed. The inner cylinder contains a liner of foam plastic, vermiculite or other suitable material to support a bomb near the middle of the cylinder and to break up and reduce the initial shock pressure level of an explosion therein.

Abstract: An optical switch, which may be a part of a fuze for an explosive project, comprises a housing made up of a hollow cylindrical part with two end plates welded thereto and having a pair of aligned glass windows sealed through opposite sides for transmitting light transversely therethrough, a gas piston with O-ring seals slidable in the housing to define an end wall of a variable volume gas chamber therein and adapted to be moved by inertia during projectile launch to decrease the volume of the chamber and thereby increase the gas pressure, means for locking the piston in the new position, a valve in the housing for admitting a light attenuating gas to the chamber, an adjustable pressure relief valve in the housing adapted to open when the internal gas pressure exceeds the external pressure by a given amount, a light source positioned adjacent to the outside of one of the windows to project light through the windows and the attenuating gas, and a light-sensitive device positioned on the other side of the housin

Abstract: A conventional impact-sensitive fuze for an explosive projectile, compris a support frame having a transverse channel, containing an arming slider having a locking hole and a detonator, and an axial opening in which a firing pin is slidably mounted by means of a slidable weight in which the firing pin is threaded, is modified by substituting, for the firing pin, a tubular firing pin support containing a timing member having a shaft and a head or paddle forming part of a retarding dashpot, and a spring-loaded firing pin connected to the timing member shaft by a camming pin and helical slot connection. In safe condition, the firing pin is in forward position engaging the locking hole in the slider. When the firing pin support and firing pin are retracted, the slider moves into armed position, and the timing member starts to rotate, retarded by the dashpot.

Abstract: A jungle penetration munition is produced which will pierce thick jungle iage and function approximately six feet above the jungle floor.

Abstract: A shoulder firearm is provided with a receiver-mounted collimating optical ight comprising a housing containing a hollow pivoted, reticle holder, an elongated rod of fluorescent material mounted in the forward end of the holder, an inclined first mirror which reflects light from a reticle at the rear end of the rod transversely to a half-reflecting second mirror, parallel to the first mirror, which, in turn, reflects the light back to the shooter's eye. A vertical range scale is mounted on the second mirror adjacent to the reticle image. To aim the firearm, the shooter aligns the reticle image with a distant target. The reticle is adjusted vertically for different ranges by means of a range knob mounted on the firearm near the trigger and connected by pinion and rack gears to the reticle holder, by rotating the range knob while observing the relative positions of the reticle image and range scale. The reticle includes a horizontal fiducial marker.

Abstract: The angle measuring system comprises: a first mirror rigidly attached to muzzle end of a long gun barrel in a plane normal to the bore axis; second and third mirrors mounted on the gun mount near each other at the rear end of the barrel facing outwardly at 45.degree. to the bore axis; and a collimated light source positioned to project a primary light ray onto the second mirror at a 45.degree. angle to be reflected to the first mirror and then reflected back to the third mirror. A set of mirrors is mounted in the path of the ray reflected from the third mirror, to split the primary ray into two separate substantially-parallel component rays having vertical components of transverse motion corresponding respectively to the vertical and horizontal components of angular motion of the gun muzzle and first mirror.

Abstract: A multiaxis transducer including a spherical conductive core, surrounded by pair of piezoelectric hemispheres which are insulated from one another except at contact with the core. The piezoelectric hemispheres are surrounded by a pair of conductive hemispheres which are insulated from each other and are positioned to compress the piezoelectric hemispheres between the conductive hemispheres and the core so as to permit generation of electrical signals by the piezoelectric material through either compression or release of compression. Also included are means for receiving electrical signals generated by the piezoelectric hemispheres during application of acceleration force towards one of the conductive hemispheres.

Abstract: An artillery projectile carrying a multiplicity of explosive mines adapted o be deployed from the projectile during flight thereof is provided with self-destruct fuze means for destroying each mine at a predetermined time, e.g., two days, after deployment. This means comprises a battery carried by the projectile connected prior to deployment to a fuze circuit in each mine. Each fuze circuit comprises a first capacitor and parallel resistor forming an RC delay circuit and a second capacitor connected in series with the RC circuit, an electric detonator and a normally-open spin-closed voltage-responsive circuit. The RC circuit is connected to the battery through a normally-open spin-closed switch and a current-limiting resistor. An electrostatic switch is disclosed as an example of the voltage-responsive switch.

Abstract: In a projectile wherein a payload is to be ejected at a selected point al the trajectory of the projectile, an improvement for increasing the payload through the loading of the projectile volume encompassed by the ogive portion thereof. The projectile is provided with an expulsion charge cup disposed proximate the nose for supplying an explosively expanding gas to eject the payload carried within the center and rear portions of the projectile housing. Intermediate the expulsion cup and the primary payload and within the projectile ogive there is disposed for sliding movement a pusher assembly which in one embodiment is in the form of an open cup with the closed end opposite the expulsion charge and carrying an "O" ring between its outer surface and the inner surface of the projectile housing. In the second embodiment the cup structure is in the form of two parts.