Abstract: A high speed switching device constructed in such a way that the casing is formed with a hollow chamber in its inside of the partition wall for separating the poles, and a runner is slidably provided in the hollow chamber, and the runner is made to operate by a lever and plate springs, and the runner is provided with two pieces of projecting elements, and the plate spring is sandwiched, and two pieces of engaging members are provided at a predetermined interval to make the lever engageable, and the plate spring is made to have length sufficient to curve in bow shape with a predetermined degree of arc circle and its both ends are fixed and installed on the upper wall and bottom wall of the hollow chamber by means of the pressure spring, and the runner is shifted in such a way that the lever is engaged with one engaging member and the plate spring is extended in straight condition and exceeds the opposite side slightly from the straight condition and exceeds the opposite side slightly from the straight conditio

Abstract: A system for identifying an object, and in particular a vehicle, by analyzing the noise spectrum emitted thereby to determine the basic noise characteristic thereof and then comparing the basic noise spectrum signal with known basic noise spectra. The noise from the object, which includes both the basic noise characteristic and other superimposed noise, is detected and converted to an electrical analog signal which is then sampled. The sampled electrical signal, preferably after passing through an analog to digital converter, is sequentially converted into its orthogonal components in the frequency domain, e.g. by means of a Fourier conversion, converted into a signal with the logarithms of the noise spectrum components, and then reconverted into a signal of the noise spectrum components in the time domain, e.g. an inverse Fourier conversion.

Abstract: The electric switch has an angular movable contact element formed by a pair of angled legs interconnected at a bend, with the outer surface of the bend bearing on a support. A movable contact at the end of one leg of the contact element is engageable with a fixed contact. A spring-loaded swivel member bears against that side of the leg, carrying the movable contact, opposite to the side facing the fixed contact, at a point spaced from the bend, and is operable by a slidable switch actuator movable in a contact element displacement direction. A loading spring has one end engaged in the swivel member and its opposite end engaged in the actuator. The swivel member carries a movable contact or is formed with a contact surface which, responsive to movement of the actuator in a switch closing direction, is engageable with an additional fixed contact of the switch.

Abstract: There is provided an improved armor-piercing incendiary projectile having within the nosepiece thereof an incendiary comprising a matrix of a first metal selected from the group consisting of zirconium, titanium, thorium, hafnium, uranium, and mixtures thereof; and an intermetallic compound formed between the matrix and a second metal selected from the group consisting of tin, lead, and mixtures thereof. Upon impact with armor, the incendiary burns at temperatures heretofore unattainable, as well as providing cushioning and lubrication for the penetrator.

Abstract: A warhead for use against armored targets, comprising a shaped charge and aftereffect caused by a second annular explosive charge located in front of the shaped charge, with the explosive charge arranged at the base of a hollow body (nozzle) tapered in target direction. A funnel-shaped sleeve is disposed between the shaped charge and the second explosive charge, and detonation transmission elements are arranged on its outer circumference. The jet from the shaped charge passes the second explosive charge prior to the latter's detonation. Behind the hole produced by the shaped charge jet an aftereffect takes place which is caused by the active mass flow accelerated in axial direction by the second explosive charge.

Abstract: The bottom plug of a projectile is provided with a radially extending recess which houses a conforming plate which is ejected from the recess when the projectile charge ignites and expels the bottom plug, thereby causing the bottom plug to become eccentric and move out of the path of the flare or other contents of the projectile.

Abstract: Method and apparatus for making a sonic transducer in which a lead zirconate titanate crystal in the form of a shallow cylinder is prepared and inserted into a shallow plastic thin walled cup with one face of the crystal in intimate contact with, and cemented by means of epoxy plastic to, the inner surface of the base of the cup. The sides and back of the crystal are protected with a thin layer of cork and all other space within the cup is filled with plastic. The cup and crystal is then inserted, open end first, into a cylindrical depression in a crystal holder, or transducer, so that the outer surface of the base of the cup is flush with the face of the transducer. The cup and crystal are cemented into the transducer.

Abstract: A device for generating pressurized fluid for inflating inflatables such as for a vehicle occupant restraint. The present generator is of the combustible chemical type having a tubular housing with radial flow discharge port means. Combustible chemical gas generating material is disposed within the housing and annularly about a central thin wall tubular casing. Longitudinally fast-burning booster charge means is disposed within the central casing and is ignited at one end of the casing. Upon ignition, the booster charge burns progressively along the length of the tubular casing causing progressive longitudinal rupture for nearly instantaneous ignition of the portions of the gas generating material adjacent the casing. The resultant substantially instantaneous ignition of the gas generating material along the full length thereof produces uniform radial burning of the gas generating material.

Abstract: A cylindrical stock has a hand-operable piston disposed at one end and a cylindrical die screwed onto the other end, with a bullet-receiving adapter held in position within the die, the inner diameter of the adapter having a recessed portion defining a passage through which grease inserted into the cylindrical stock can be forced by the piston into grooves of the bullet. Adapters of differing inner diameters accommodate bullets of differing outer diameters, such that the device can be used for greasing bullets of different caliber.

Abstract: In order to achieve a fragmentation device having a highly effective coupling between the fragments and the high explosive used therewith, we provide in accordance with this invention a novel layered warhead in which uniformly thick layers of fragments are interspersed with well defined layers of detonating, military type explosive, thus defining a desirably low charge-to-metal ratio, and making possible a predictable, uniform pattern as well as very high fragment velocities.

Abstract: This disconnect contact assembly comprises a tubular insulator projecting forwardly through a grounded metal plate and surrounding the usual bridging contact subassembly. A current transformer secondary assembly surrounds the tubular insulator. Two separate metallic coatings are provided on the tubular insulator, the first one on the outer peripheral surface of the insulator and the second one on the inner peripheral surface of the insulator. The first metallic coating is normally at ground potential and the second one is normally at the potential of said bridging contact subassembly. In addition, two semiconductor coatings, each having non-linear resistivity properties, are provided on the tubular insulator. The first semiconductor coating is disposed on the external surface of the tubular insulator at the forward end of said first metallic coating. The second semiconductor coating is disposed on the internal surface of the tubular insulator at the forward end of said second metallic coating.

Abstract: A method of orienting metal staples randomly dispersed in a solid propellant by filling a bayonet having a screen at the bottom thereof with the uncured solid propellant mixture and forcing the mixture through the bayonet screen.

Abstract: An armor-piercing tandem projectile adapted for multi-layered armored targets. Two armor-penetrating devices are incorporated in the body of the tandem shell projectile which differentiate each other with respect to their moments of impact; the rear armor-penetrating device incorporates a shaped hollow explosive charge including a cavity lining forming an armor-penetrating spike (projectile with high initial velocity) upon detonation. The forward armor-penetrating device has a pointed end with an axial conduit which is in communication with the hollow explosive charge and serves as a passageway for said spike.

Abstract: Switches operated by gas, preferably controlled electrothermally, include a capillary tube closed at both ends with a conductive liquid piston dividing the tube into two chambers each filled with a non-oxidizing gas. A pair of electrical contact points are disposed within the capillary tube with the piston positioned to, at selected intervals, contact both points simultaneously. In one embodiment of the switches, a closed glass capillary tube contains a pair of aligned nickel wires with ends selectively contacted simultaneously by a mercury piston or globule providing a circuit-closing position for the switch. The switch is set in the circuit-closing position by applying heat to a non-oxidizing gas within one end of the capillary tube. The switch is then reset to a circuit-opening position at any desired time by applying heat to a non-oxidizing gas within the other end of the capillary tube.

Abstract: A piezoelectric transducer adapted to be immersed in water at great depths, and suitable for applications as a sonar antenna, comprising a cylindrical envelope, a number of piezoelectric drivers disposed within the envelope and constituted by at least one stack of elements alternating with electrodes, at least one pre-stressing rod for interconnecting and compressing the stack, and a common intermediate member to which the drivers are secured by the rod, the member also acting as a counter-mass for the drivers.

Abstract: A tilt switch of the mercury type wherein at least one electrode extends into the switch chamber containing a mercury-like globule which is movable back and forth between a first position resulting in the switch being in a state of conductivity or non-conductivity when it is oriented within a first solid angle and the opposite state when it is oriented outside that solid angle. The chamber is of at least generally dry wall construction and may be of small size for use in activating a LED or LCD display of a battery-powered wristwatch.

Abstract: A cartridge is filled with mouldable explosive by a piston and cylinder device. A detonator is inserted into a tube within the cartridge so that the detonator is completely surrounded with explosive. The cartridge is made of transparent material and is graduated so that the quantity of explosive within the cartridge can be observed.

Abstract: A thread protector and seal device, suitable for use with automated shell lling equipment utilizes a flanged semi-rigid tubular member having a plurality of longitudinally disposed slots on one end thereof to facilitate insertion into the nose end of an internally threaded projectile. A compliant member is molded into interior and exterior annular grooves of the insertion end of the thread protector to prevent the accumulation of explosive material from entering the threaded fuze area of the projectile during a loading operation.

Abstract: A control lever for a machine or the like includes a grip or handle for a control member defining a housing for mounting a switch and includes a thumb actuated rocking actuator positioned on the top of the grip for ease of actuation by the thumb of an operator while grasping the handle of the control lever.

Abstract: An ignitable charge for producing pressurized gas to power industrial tools, that is made of plentiful, common materials at a very low cost, lower in cost than conventional charges by orders of magnitude. The charge is comprised of a hollow plastic jacket of triangular cross section that is open through its center to both opposite ends and contains a nitrocellulose propellant in uncompressed, or expanded form that may be ignited through one end of the jacket by a spark, hot wire, or the like in an open chamber type feed and firing mechanism. The charge produces pressurized gas at the desired burning rate and peak pressures for operating the tool.