Abstract: A safety mechanism in which a striker on the hammer can hit the firing pin to discharge the firearm only when the trigger is intentionally pulled and the pull on the trigger is maintained. The striker can move on the hammer and is pushed to the firing position by a weak spring. A safety arm associated with the trigger, pushes the striker to a mis-aligned position in which it cannot hit the firing pin. If the hammer is released accidently by inertial forces, such as dropping or bumping the firearm, the safety arm engages and mis-aligns the striker as the hammer falls, before the striker arrives at the firing pin. Pulling the trigger withdraws the safety arm, but the pull must be maintained until the hammer falls, in order to discharge the firearm.

Abstract: This invention pertains to the electroacoustic transducer arts and disclo an improved physical construction therefor in which a honeycomb-like member is used to secure both pressure release and thermal transfer for the converting element.

Abstract: This invention relates to safety and simplicity in initiating high explosives. The new method uses a hybrid system for electro-mechanically initiating either fast burning detonating cord or slower burning plastic initiating tube or fires electric blasting caps.The subject initiating system consists of four (4) basic components: a capacitor discharge power supply connected to a standoff cable reel, a wiring standoff cable spooled out from said reel to a solenoid housing.Within the housing, the system is again broken down into sub-components. A connector plug and socket connects the standoff cable to a pulse type electrical solenoid. The solenoid is positioned so that when said solenoid is electrically actuated the solenoid's plunger or firing pin strikes a shot shell primer which is inserted into a coupling device.

Abstract: An adjustable thermocouple fitting and a mounting system for an adjustable thermocouple temperature detection device includes a thermocouple cable and a bushing-type fitting having an externally threaded end for engagement with threads within the thermocouple well or orifice and an internal threading arrangement within the fitting designed for engagement with the flexible spiral surface of the thermocouple cable which may be either the surface of an armored cable or a spring spiraled about the surface of the thermocouple cable. The internal and external threading on the thermocouple fitting are in the same direction. In a variation of the assembly a bayonet-type cap is provided for engagement with a conventional bushing with a bayonet top and the bayonet-type cap has internal threads adapted for engagement with the external threads of the bushing-type fitting of the invention.

Abstract: A firearm, particularly a piston, is provided with a trigger mechanism, which comprises a spring-loaded trigger rod, a trigger for moving the trigger rod, and locking means for preventing a movement of the trigger rod other than by an operation of the trigger. The trigger rod is slidably mounted and guided in the receiver of the firearm for a movement along a straight line. The trigger is directly mounted on the trigger rod for a limited pivotal movement. A spring is provided, which biases the trigger for a forward pivotal movement and exerts a forward tensile force on the trigger rod and when the trigger is in its initial position retains a nose of the trigger in a notch of the receiver.

Abstract: An ultrasonic sensor for fluid levels comprises a carrier having spaed-apart legs with registering openings adapted to receive a piezoelectric transmitter and a piezoelectric receiver in the openings. The piezoelectric members are separated by the spaced legs of a ground plane engaging plates of the piezoelectric members. Resilient members in the form of coiled conductors are entrained between a snap-on cover and the transducers so as to resiliently engage the piezoelectric members against the ground plane. The conductors are coupled by crimp connectors to the leads of a cable carried by an elongated channel portion of the carrier. The crimp conenctors are caried in recessed portions of the carrier, and the carrier is over-molded to encase the connectors and the cable. The cable is in turn coupled to an electronic control module positioned remotely from the fluid sump and connected to a warning device.

Abstract: An armor penetrating projectile having a matrix of iron or a steel alloy ch has a Rockwell C hardness of from about 40 to about 60 and a density of from about 99.5 to 100 percent, the matrix being reinforced with wires of a heavy metal such as tungsten, molybdenum, tantalum, or alloys of these metals.

Abstract: A child-resistant safety device for attachment to firearms having a barrel with a muzzle and a cocking mechanism such as a hammer, for temporarily rendering the firearm inoperative, but which may be quickly removed by an adult to enable the firearm to be operated. The device comprises a block adapted to lie against the muzzle of the gun, and a strap having a first portion adapted to extend behind the cocking mechanism of the gun and a second portion adapted to extend from the first portion to the block. Fasteners extend through the block into engagement with the strap to hold it firmly behind the hammer, and a releasable cap is secured on the block through interengaged detents to prevent removal of the cap from the block. A pin carried by the cap extends through the block and into the muzzle of the gun to prevent removal of the cap and block from the muzzle of the gun, and thus prevent removal of the strap from the cocking mechanism.

Abstract: An improved method for reducing misfires in large diameter unlined blastholes by fitting on the primer used in the blasthole a centering device comprised of a semi-conducting plastic material.

Abstract: A projectile having a piercing front end with a solid lubricant molded on the front surface for reducing friction during penetration. The lubricant is molded in a shape to receive an antenna and other electronics. The front end also has an axial hole formed therein to enhance self destruction from the sudden release of compressional strain energy accumulated during penetration through a hard target.

Abstract: Apparatus for pushing a load e.g. a projectile comprises an elongate ribbon which can be extended from a condition where it is coiled on a drum to a substantially straight condition for pushing the load. The ribbon has a generally curved cross section when in its straight condition, and at its front end it has a buffer arranged such that when engaged with the load, the compressive force on the ribbon acts eccentrically so as to deflect the ribbon laterally in a direction towards the center of curvature of the cross section and to bias the ribbon against deflection in the opposite direction.

Abstract: An anchoring element for the securing of heavy plates or the like on an anchoring base, particularly for securing armoring elements or additional armoring to vehicles, includes a plate-shaped buffer body of a material that is elastically deformable to a limited extent, such as of rubber or a similar material, and two connecting elements which are rigidly connected with the buffer body and are held by the buffer body at a predetermined distance from one another. Of the connecting elements, which are movable with respect to one another within limits determined by the deformability of the buffer body, one is connectable with the plate to be mounted and the other with the anchoring base. Each of the connecting elements includes a floor metal sheet plate which has a thickness which is very small relative to its other dimensions. The floor metal sheet plates accommodate the buffer body between themselves and are connected with the latter over relatively large areas at the respective contact planes.

Abstract: A method and device for protecting a first stage liquid rocket booster from impact damage and environmental damage so as to permit recovery from a sea water landing and reuse without major rehaul of the rocket engine of the booster. A cylindrical double walled structural member encircles the nozzles of the rocket engine and precludes impact damage after the booster has landed nose first in the water. A flexible water impervious sleeve means is carried within the double walled structural member and deployed prior to impact. The sleeve extends from the booster and collapses inwardly upon itself to prevent entry of sea water into the rocket engine and associated equipment.

Abstract: A telescopic sight assembly has formed therewith a rotatable or adjustable housing which housing includes an image intensifier tube and suitable optics to be used in conjunction with a conventional telescopic assembly. By means of a simple action associated with the telescopic sight, a user can rotate a control knob or lever and, hence, change operation of the sight for day to nighttime use, or vice versa. Included in the assembly is a conventional image intensifier module and the necessary electronics to operate the module. The housing is rotatable or pivotable and includes means which can be selected by the user to select night or daytime operation and, hence, afford the user telescopic viewing together with image intensification as desired. The device is particularly adaptable to be mounted in conjunction with small arms type systems.

Abstract: A stabilization system for a spacecraft (10) which enables the spacecraft to be stabilized by rotation about any principal moment of inertia axis. The system includes two pairs of control thrusters (14, 16, 18, 20) for producing positive and negative control moments about two orthogonal axes mutually perpendicular to the axis of rotation of the spacecraft. The control system (40) includes rate gyros (42, 46) which provide error signals which are sent to duty cycle modulators (54). The duty cycle modulators provide a pulse width modulated control signal to the control thrusters to approximate proportional control of spacecraft attitude.

Abstract: A tank features magazines which hold ammunition units (3a, 3b) of different types. The feeding path includes discharge devices for discharging the ammunition units from the magazines, and a turntable (8) for receiving each respective ammunition unit discharged from the magazines and turning the ammunition unit to a traverse direction which coincides with a preset traverse direction for the gun of the tank. There are further included means for transferring each respective ammunition unit from the turntable to the ramming position in the gun. The turntable is provided with two carrier units (8a, 8b) for ammunition units. The carrier units are alternatingly movable into and out of the feeding path for the ammunition units. On feeding of the first type of ammunition unit (3a), the first unit operates in the feeding path, while the second unit is located outside the feeding path where it carries an ammunition unit (3b) of the second type.

Abstract: An ultrasonic probe includes a first group of one or more piezoelectric elements extending concentrically, and a second group of one or more piezoelectric elements extending concentrically and extending outward of the elements in the first group. The elements in the first and second groups form a front surface via which ultrasonic wave is transmitted and received. The elements in the first and second groups are separated by predetermined gaps. Areas of the respective elements in the second group over the front surface are substantially equal to each other within an accuracy corresponding to areas of the gaps over the front surfaces. Areas of the respective elements in the first group over the front surface are substantially equal to half the areas of the respective elements in the second group within an accuracy corresponding to the areas of the gaps.

Abstract: The invention is an electronic circuit with several inputs, several outputs, a timing circuit, and two switching circuits used to actuate the firing of certain firearms. The circuit is partitioned into a voltage boosting circuit, a machine gun firing circuit and a cannon firing circuit. The voltage boosting circuit produces a voltage that is larger than the supply voltage, which is used to facilitate the operation of MOSFET switching circuits. The machine gun firing circuit connects a low impedance voltage source to a particular output only so long as a particular input is electrically asserted. The cannon firing circuit connects a low impedance voltage source to a particular output for a specified period of time only in response to a stimulus on one particular input and only if an additional arming input is electrically asserted.

Abstract: The present invention relates to a plant stem holder, particularly potted house plants having tall or elongated stems. The plant support includes a unitary tripodal base having three radiating sleeves and consisting of three stub feet that also extend radially and horizontally outward from each sleeve. The screw type stub feet can be telescopically adjusted to secure the plant support to the inner wall of a round or oval planter. A single upright stanchion, having plant stem bracing means, depends from a central position on the tripodal base. A tier-type of plant stem extension assembly is securely mounted at the top end of the upright stanchion. The plant stem holder of this invention avoids damaging plant roots, effectively supports house plants, and presents an attractive appearance to the observer.

Abstract: A remotely controlled tooling apparatus is disclosed for supporting and selectively disposing a tool with respect to a workpiece illustratively taking the form of a core barrel of a nuclear reactor. Illustratively, a core barrel is of a substantially cylindrical configuration and has a plurality of flow holes disposed therethrough. The remotely controlled apparatus comprises a tool carriage, a support table carried thereby for receiving the tool, a strongback assembly for supporting and guiding the tool carriage with respect to the core barrel, and a pair of clamps affixed to the strongback assembly for engaging the core barrel for suspending the strongback assembly upon the core barrel. The tool carriage and its support table carried thereby are selectively disposed with respect to the core barrel, whereby the tool may be engaged and disengaged with and from the core barrel.