Abstract: An improved auto-fire assembly for an industrial gun of 8 gauge or larger which releases the trigger of the gun in response to the breech block of the gun being fully placed in closed breeching position.The mechanism presented provides a trip arm to be contacted by the industrial gun operating lever, with the trip arm on a shaft rotatably mounted on the stop bracket limiting breech opening. The resultant simplified structure enables easy modification of existing lanyard operated guns to include autofire capability.

Abstract: A high density shot made of a cold-compacted mixture of at least two metal powders, a first one of such powders more dense than lead and a second one of such being flowable under compaction to serve as a binder. The shot has an extended range as compared to conventional lead shot.

Abstract: A anti-detonation safety device for use in a bulk handling system transporting explosive powder. The device comprises spaced inlet and outlet members and, disposed therebetween, a plurality of interconnected planar panels defining a cruciform chamber, the wings of which each include a top panel, operable in response to an increase of the pressure in the chamber, to provide for venting the same.

Abstract: An improved method for producing known primer constituents lead styphnate and barium nitrate, in situ, plus water. The process is carried out by reacting effective amounts of trinitroresorcinol (TNR), with barium hydroxide, or barium carbonate, and lead nitrate in water.

Abstract: A non-adherent glove-like diaphragm structure for use in an electrolysis cell. The diaphragm structure has a finger means with an open upper end, and closed lower end, and a middle section connecting the upper and lower end. The lower end is perforated so as to receive an anode riser therethrough. The diaphragm structure also includes a border for attaching the finger to the upper edge of the cathode so as to separate the cathode from the anode and the anolyte of the electrolytic cell.

Abstract: A jumper system for electrically by-passing one of a series of electrolytic cells without interrupting current flow through the remaining cells is disclosed. The jumper system includes two L-shaped conductors, a switch for electrically connecting the conductors, and a contact pressuring device for remotely moving the conductors into pressurized contact with the cell preceding and the cell following the cell to be disconnected.

Abstract: A gas separation assembly for an electrolytic cell having a gas-evolving electrode and a total cell current density above 2500 amperes per square feet of internal horizontal cell area is disclosed. The assembly includes a gas collector within the gas-evolving electrode and a disengager with less than 0.13 square feet of internal, horizontal, cross-sectional disengaging area per kiloampere of total cell current.

Abstract: A method of assembling progressing cavity pump of the Moineau type having a helically externally threaded rotor coacting with an internally helically threaded stator. In a Moineau pump where the pump casing is a singular tubular unit, the stator is normally bonded to the inside of a tubular housing with an adhesive. When such pumps are used to pump a corrosive fluid, such as caustic soda, the adhesive can be attached and the stator thus freed to rotate. To prevent the stator from rotating, studs are driven through the housing and into the stator. The location of these studs can be pre-marked by use of a suitable template. Also, the driven studs can be welded to the housing to prevent leakage or loosening.

Abstract: A high current cell-shorting switch is provided with removable bus bar tips having an enlarged beveled area of contact. A plurality of movable tapered bridge contacts are arranged along a main shaft such that upon rotation of the shaft a plurality of the bridge contacts are simultaneously driven into spanning contact with two of the bus bar tips. The main shaft is supported by pairs of split collars which can be easily separated thereby permitting removal of the main shaft and associated contacts. Upon separation, the switch contacts and bus bar tips may be easily removed for refurbishing or replacement.

Abstract: A low overvoltage cathode is disclosed which has a metal substrate plated with a porous coating of dendritic copper which is in turn plated with a low overvoltage metal alloy. The substrate is preferably copper and the low overvoltage alloy is preferably a Ni-Mo alloy.

Abstract: An apparatus for dispensing and dissolving soluble water treatment materials is disclosed. The apparatus has an inlet, an outlet and a housing divided by a wall into an outlet chamber in fluid communication with the outlet and a dissolving chamber in communication with the inlet. A vertically adjustable control tube device for controlling the level of water in the dissolving chamber and an outlet valve device for maintaining the water level in the outlet chamber above the outlet are provided. A support device is provided to hold a plurality of cartridges with their lower ends immersed in the water in the dissolving chamber. A high water level malfunction shut-off valve with or without an indicator can be provided and the inlet flow can be controlled by perpendicular passageways with a rotary valve therebetween. The inlet may be in a wall of the outlet chamber and be isolated from the outlet chamber by an inlet valve mechanism leading to the dissolving chamber.

Abstract: A method and apparatus for automatically measuring calcium and magnesium concentrations of less than about 500 parts per million in a liquid solution is disclosed by repeatedly automatically trapping a single sample, colorimetrically analyzing the trapped sample and displaying a corresponding calcium and magnesium concentration reading.

Abstract: An improvement in an on-site foam generating apparatus which includes storage tanks for supplying the foam-forming reactants, a mixing chamber, and means for conveying the reactants through the mixing chamber. The improvement comprises means for cleaning the mixing chamber including a solvent storage tank and means for recovering the solvent within the apparatus and recycling the solvent through the chamber.

Abstract: A perforated support for helping prevent damage to a non-adherent membrane in a chlorine gas-producing cell configuration having downwardly open, gas-trapping pockets adjacent such a membrane in the upper end of a chlorine-producing anolyte chamber. The cathode chamber can be at a greater pressure than the anode chamber to force the diaphragm against the support.

Abstract: A casing suitable for covering a substantially rectangular electrode for a diaphragm-type electrolytic cell comprises a closed end, an open end, and two closed, reinforced sides.The casing is formed of a single flexible material which is folded or sealed to provide a plurality of fingers each having a closed end and then sealed to form two closed sides, such casing preferably having reinforced edges.

Abstract: A highly conductive and corrosion resistant low hydrogen overvoltage cathode. The cathode comprises a copper substrate plated with an alloy of nickel and molybdenum.

Abstract: An electrolytic cell having auxiliary circuit means for applying a cathodic protection current to cathode and exposed metal parts to help prevent corrosion thereof during cell shut-down.

Abstract: A method and apparatus for measuring the overvoltage of a gas producing electrode of a chlor-alkali diaphragm cell is disclosed. The method includes positioning an exposed metal tip of a reference electrode from about 0.2 to about 1.0 mm away from the gas producing electrode within a stream of gas produced by the gas producing electrode. The apparatus includes the reference electrode so positioned. Platinized platinum wire and a RuO.sub.2 --TiO.sub.2 coated Ti wire are preferred as the reference electrodes for cathode and anode, respectively.

Abstract: A highly conductive and corrosion resistant low hydrogen overvoltage cathode. The cathode comprises a copper substrate plated with an alloy of nickel and molybdenum.