Abstract: A pin holder for a separable electronic plug connection wherein a number of resilient lips are formed on the holder. The lips are provided at their free ends with an inwardly protruding hook-shaped part. The pin holder has a pin carrier located therein. The pin carrier has outwardly, directed protruding parts formed thereon which, in the assembled state, engage behind the hook shaped parts which have been provided with obliquely running contact surfaces. At least one shoulder inside the holder preferably forms stop means. The pin holder is further provided with openings in an intermediate wall through which pins can extend.

Abstract: A plating bath and process for electroplating coatings of palladium nickel alloys on a conductive substrate at current densities in the range of 10 amps/sq. ft. to 150 amps/sq. ft. wherein the palladium content of the alloy remains substantially constant despite current density variations during plating. The alloy composition stability is achieved by adding at least about 15 parts per million of iodide and/or iodate ions to the plating bath. The as-plated alloy has a thin surface layer which contains iodide at or near the surface.

Abstract: A plating bath and process for electroplating coatings of palladium nickel alloys on a conductive substrate at current densities in the range of 10 amps/sq. ft. to 150 amps/sq. ft. wherein the palladium content of the alloy remains substantially constant despite current density variations during plating. The alloy composition stability is achieved by adding at least about 15 parts per million of iodate ions to the plating bath.

Abstract: An electrical connector containing a switch which makes or breaks an electrical connection when the connector is plugged into or unplugged from a mating connector. The switch is located in an aperture in the electrical connector. It is capable of limited reciprocal motion parallel to the longitudinal axis of the aperture. The switch includes at one end a pair of normally touching contacts and a dielectric finger. Electrical connection is broken when the switch reciprocates so that the dielectric finger is interposed between the normally touching fingers and, likewise, electrical contact is made when the reciprocation movement of the switch removes the finger.

Abstract: A magazine floor plate latch for releasing the hinged floor plate of a cartridge magazine in a bolt action firearm. A spring biased latch having two upper legs and one lower leg is positioned in a central aperture in the front face of a trigger guard. The latch is adapted to pivot about a pivot point at a line of contact between a pointed surface in the trigger guard extending upward and fitting into a notch formed in the lower leg of the latch. The latch is normally biased by a spring so that one of its upper legs blocks the floor plate to keep it from swinging open about its hinged end. The floor plate is released by applying pressure on the latch so that it pivots until this upper leg no longer blocks the plate. This upper leg has a curved locking surface with a center of curvature offset from the pivot point to enable the locking surface to relatch the floor plate tightly against the bottom of the magazine as the latch pivots to its normally spring biased position.

Abstract: A bolt-action firearm, of the type having a bolt rotatably movable between closed and open positions, has an improved bolt latch mechanism which is operable independently of a safety mechanism. The latch locks the bolt in closed position automatically when the firing pin is cocked, and releases the bolt upon firing. The latch mechanism is recessed in the bolt plug in such fashion that it is readily visible and accessible, yet does not interfere with normal manual operation of the firearm, and does not protrude so that it might readily be displaced accidentally. In one embodiment, the latch may be manually displaced to or from a disabled position, in which it is releasably detented.

Abstract: Dry offset printing apparatus for high speed printing on cylindrical objects fed either horizontally or vertically to the printer, which comprises a three-roller system including a single roll ink-metering system, plate cylinder and blanket or p rint roll. The ink roll is provided with a relatively soft, smooth elastomeric surface as is also the offset print roll blanket. A doctor blade is configured and oriented with respect to the ink roll to meter a uniformly even, thin film of ink onto the roll. Means are provided for evenly distributing the ink film on the ink roll in both horizontal and vertical embodiments of the printer. Means are also provided to prevent excessive ink buildup on print roll when skips occur at the printing station. Rotary transfer means are provided for positively feeding the cylindrical objects to the printer at high speeds in either horizontal or vertical orientation.

Abstract: A firing pin block for a firearm of the type having a rotary breech bolt, a reciprocating bolt carrier, complementary locking lugs formed on the bolt and barrel to releasably secure them together, and cam means drivingly connecting the bolt and bolt carrier for opening and closing the bolt. The firing pin block positively prevents discharge of the firearm at any time when the bolt is unlocked. It does not rely on the presence or good condition of any separate parts, but instead coordinates the cam-actuated rotary operation of the locking lugs with relative longitudinal displacements between the bolt and bolt carrier, to cause the latter to block an enlarged abutment formed on the firing pin whenever the bolt is unlocked.

Abstract: Dry offset printing apparatus for high speed printing on cylindrical objects fed either horizontally or vertically to the printer, which comprises a three-roller system including a single roll ink-metering system, plate cylinder and blanket or print roll. The ink roll is provided with a relatively soft, smooth elastomeric surface as is also the offset print roll blanket. A doctor blade is configured and oriented with respect to the ink roll to meter a uniformly even, thin film of ink onto the roll. Means are provided for evenly distributing the ink film on the ink roll in both horizontal and vertical embodiments of the printer. Means are also provided to prevent excessive ink buildup on print roll when skips occur at the printing station. Rotary transfer means are provided for positively feeding the cylindrical objects to the printer at high speeds in either horizontal or vertical orientation.

Abstract: Apparatus and method for covering the flash holes in a primer battery cup, particularly where the anvil is formed integrally with the battery cup. Tooling apparatus is provided which includes a spring-loaded punch positioned and slideable axially within an outer punch. A covering medium such as paper is delivered to the tooling station as a strip where it is pierced and slit by the spring-loaded inner punch and blanked by the outer punch. The blanked portion is inserted into the battery cup and seated over the flash holes at the bottom of the cup around the anvil.

Abstract: An electrically-fired gun, of the type having a breechblock slidable in a transverse passage across its breech, has a retractor mechanism mounted within the breechblock for retracting the firing pin electrode tip behind the face of the breechblock as it opens and closes. A retractor lever connected to the firing pin is controlled by positioning means comprising spring means biasing the lever in one direction, and a plunger cam cooperable with a wall of the transverse passage to displace the lever in an opposite direction. The positioning means serve to retract the firing pin when the breechblock is opened for reloading, and to extend it on reclosing.

Abstract: A firing pin block for a firearm of the type having a reciprocating bolt assembly including a breech bolt and slide block, a firing pin, and a pivotal locking block. The slide block and locking block have cam means which cooperate to pivot the locking block in and out of locking engagement with a recess in the barrel as the slide block is reciprocated to close and open the bolt. The operation of these cam means is coordinated with relative longitudinal displacements between the bolt and slide block so that, at any time the locking block is not completely locked, the slide block prevents sufficient forward movement of an abutment on the firing pin to cause the firearm to discharge. This firing pin block is effective even though the firing pin spring and retaining pin may be broken, distorted, or missing.

Abstract: An industrial gun, of the type having a transverse sliding breechblock, has a firing mechanism which automatically cocks and then releases a hammer as the breechblock closes. A sear is pivoted in the yoke or receiver of the gun in a position to engage and cock a hammer carried by the breechblock as the breechblock is moved from an open to a closed position. A cam surface on the sear bears against a cooperating cam surface on the hammer to release the hammer from the sear as the breechblock reaches the fully-closed position, in which a firing pin carried by the breechblock attains correct alignment with a shell in the gun chamber. A set screw provides an adjustable cam surface on the hammer to allow the correlation of the timing of the hammer release with the breechblock movement to be readjusted precisely as the parts wear with use.

Abstract: An electrically-fired gun, of the type having a transverse sliding breechblock, has a recoil-operated mechanism for retracting the firing pin electrode tip behind the face of the breechblock during its opening and closing movements. A movable weight is connected by a rocker arm to the firing pin assembly, and is normally latched in place to hold the electrode tip in a retracted position. Manual release of the latch allows a spring to extend the electrode tip into a firing position. Recoil of the gun on firing results in a movement of the weight that retracts the electrode tip, and the parts are automatically re-latched in this position.

Abstract: A detent system for tubular magazine firearms serving the dual function of retaining the magazine spring within the magazine tube when the cap has been removed while also acting as a detent to keep the magazine cap securely tightened during normal use. A plastic member is provided with full and partial longitudinal slots which cooperate with indents on the magazine tube to facilitate assembly of the detent system within the tube. The slots and detents also cooperate to maintain the plastic member securely spring biased in a position so that serrated teeth along a peripheral end surface will intermesh teeth on the inside periphery of the cap in order to maintain the latter securely fastened to the magazine tube.

Abstract: A skate device includes a molded plastic form, a triangular plate and a pneumatic wheel. The plastic form is adapted to fit about the foot and has slightly downward extending forward and rear integral portions. The triangular plate is mounted under the molded form and extends along the center of the foot arch, forming the base frame of the skate to which the pneumatic wheel is attached. The wheel is secured to a bent end portion of this triangular plate at the outside of the foot. A second smaller wheel may optionally be attached to a bent end base portion of the triangular plate at the inside of the foot. The skate may be secured to the foot by laces.