Abstract: A chain shackle has a U-shaped body with flat parallel limbs interconnected by a bight portion with a longitudinal slit accommodating an end link of a chain which is engaged inside the shackle by a half-link resting against the inner surface of the bight portion. The half-link has an integral lug which is traversed by a pin laterally offset from the slit serving to hold that half-link in a chain-retaining position.

Abstract: A selector switch assembly includes modular switch units that are serially-arranged in a housing and are operated by a single rotatable control member that is biased to a first position by a biasing unit. A modular switch unit includes a housing that has an end wall and two opposite sidewalls that each have two recesses at opposite ends which receive planar blade portions of switches to define an enclosure. The control member includes a hollow tube that has a friction member which has cams on the periphery to actuate the switches and also has an opening for frictionally engaging a rotatable adjusting screw on the next modular switch unit. The modular units are sealed into a support and the hollow tube provides access to the adjusting screw outside the support.

Abstract: An adjustable speed pumping system includes a plurality of pumps respectively driven by variable speed A.C. motors each having a power recovery circuit. Each power recovery circuit includes a series connected rectifier bridge, an inductive reactor and an inverter coupled to the secondary winding of the motor which has an A.C. source connected to the primary winding. A fault clearing mechanism is included in each circuit and includes solid state switches in the bridge actuated by a current level sensor coupled to the inverter output. The power recovery circuit also includes current foldback circuitry and secondary gating circuitry coupled to thyristors in the inverter. The power recovery circuits can be connected in parallel with a single motor and the system includes circuitry for sensing the highest amplitude current in the parallel circuits and controlling all circuits with this current.

Abstract: The invention relates to a process and an apparatus for heading and eviscerating fish in which the head and the entrails are integrally removed from the body of the fish. According to the invention, only the neck of the fish is cut, after which the head is turned down through approximately 90.degree. in relation to the axis of the body and, finally, the head undergoes a relative displacement along the body of the fish towards the rear thereof. As a result, the fish is completely eviscerated. The apparatus for carrying out the process essentially comprises a cutter for cutting the neck, a guide for turning down the body of the fish and two holders, one for the head and the other for the body of the fish, which receive different movements responsible for the above-mentioned displacement.

Abstract: A toy configured to simulate an insect with wings is disclosed. The toy has a main body section to which a tail and a head section are attached to form an insect body. Two wings are rotatably mounted for disposition on both lateral sides of the main body section. A mechanism is provided to cause simultaneous flapping of all the wings. A cavity having a pivotable cover plate is provided in the head section. Various toy appendages such as a toy doll may be placed in the cavity.

Abstract: This invention relates to a method for treating residue gases proceeding from units applying the Claus reaction for the removal of sulphur and having been subjected to a conversion of the sulphur compounds into sulphuretted hydrogen.This method consists in that, prior to absorption of the sulphuretted hydrogen by a selective solvent in aqueous solution, the gases to be treated are cooled to a temperature so selected as to condense the water contained in the gases to form an aqueous effluent which is thereafter injected into the circuit of the selective solvent.

Abstract: The gas laser includes in particular a cathode (2) which is substantially cylindrical about an axis (10) parallel with the axis of the laser cavity, said cathode being provided with protrusions (11) formed by grooves in which insulated conductor wires (12) are disposed, said wires being brought to an electric potential which is positive with respect to that of the cathode, and means for rotating the cathode on its axis. Cathode rotation serves to cool the cathode during operation and can also be used to circulate the active gas. Application to welding and to machining.

Abstract: A multipole circuit breaker having a housing with a top wall center recess receiving a center strut of an interior trim. An operating assembly is interconnected with a trip assembly through a translator link passing beneath the center recess and is operable by the magnetic assembly to assist the operating assembly in separating the breaker contacts in response to a fault current. A closure member overlapped by the interior trim prevents access to the load wires. A voltage reject configuration is provided on the housing to prevent mounting in a panelboard designed to carry voltages higher than that for which the circuit breaker is rated and a jaw assembly for the breaker is disclosed having a plurality of contact positions with each leg of a U shaped bus stab.

Abstract: In a pistol of the type having a firing pin formed of two linearly consecutive elements, that are either aligned or non-aligned with each other, a sear for engaging the hammer and an arming trigger bar for arming the trigger there is provided a safety device comprising a safety shaft transversely mounted in the breech block and carrying the rearward portion of the two-part firing pin. The safety shaft is angularly displaceable about its own axis, so as to activate and deactivate the firing pin. Further, the device has an intermediate rocker lever that engages a first cam surface of the safety shaft so as to arrest the sear in an inactive position when the firing pin is deactivated. This intermediate rocker lever is pivoted on the crown of the weapon so as to be positioned between the safety shaft and the sear.

Abstract: From a mixture of isoleucine and leucine in a ratio by weight of at least 3:7, the isoleucine is precipitated in an anhydrous solvent, particularly methyl ethyl ketone, using concentrated sulphuric acid. The precipitate is separated and freed from sulphuric acid, for example by neutralisation with barium hydroxide after elimination of the solvent. Industrial production of marketable isoleucine from a mixture still containing leucine.

Abstract: An apparatus for measuring a dimension of a workpiece, for instance a worece being machined on a lathe, comprises a unit which may be moved toward and away from the workpiece. That unit includes a forked carriage one of the prongs of the fork having a light source which directs a parallel light beam perpendicularly to the direction of movement of the carriage toward the other prong. Light sensitive means on the other prong deliver a first signal when the light beam is interrupted by the workpiece upon movement of the unit and a second signal when the light beam is re-established.

Abstract: A process for introducing into a metal bath an additive in the form of a solid shaped in the form of an elongate body portion having at least two vanes extending outwardly therefrom for a distance of not more than 40 mm with the vanes dimensioned and spaced one from the other to avoid interlocking thereby to enable the desired effect to be derived from the addition as rapidly as possible, including the shaped additive and method.

Abstract: A feed and cutting device for dividing a continuous web into portions is described. The device comprises along a feed plane, guiding device for the web comprising a pair of mutually tangential rollers, apparatus for feeding the web along said plane and a device for cutting the web into portions. The main feature of the device is that at least one of the guide rollers is mounted on a shaft coaxial thereto and rotating with continuous motion, and is connected to the shaft by a self-locking device which prohibits any discordant relative rotation between the roller and the shaft but which allows idle rotation of the roller on the shaft at an angular speed exceeding the angular speed of the shaft, the angular speed of the shaft being close to but less than the angular speed transmitted to the respective roller by the feed device by way of said web.

Abstract: This invention is a vacuum bagging device which consists of a receiving bag separated from the product to be conditioned by a flexible and deformable spout. This spout is electropneumatically operated. The receiving bag is made of a material which can be thermo welded. It receives under vacuum the product to be conditioned which remains in this state until the welding operation takes place, the latter being achieved by thermocompression of the upper part of the bag. The operations are synchronized by a programming electromechanical circuit. This invention can be used for fast conditioning and bagging of powdery, granulated or pulverized products, whatever their quantity.

Abstract: Novel substituted 2,3-alkylene bis (oxy) benzamide azimido compounds and derivatives thereof are disclosed as for example N-(1-allyl-2-pyrrolidylmethyl)-7,8-azimido-1,4-benzodioxane-5-carboxamide and N-(1-allyl-2-pyrrolidylmethyl)-6,7-azimido-1,4-benzodioxane-5-carboxamide. The compounds have anxiolytic, psychostimulant, disinhibiting and thymoanaleptic properties useful therapeutically in the psychofunctional field, particularly in gastro-enterology, cardiology, urology, rheumatology and gynaecology.

Abstract: A lifting hook with a safety gate journaled about the shank thereof, which safety gate is locked against rotation about the shank by a cam member mounted for pivotal movement on the safety gate and spring loaded to abut a flat formed on the shaft when the safety gate is in its closed position. The cam member is adapted to be manually pivoted out of abutment with the flat on the shaft to enable the safety gate to be opened and a preferred embodiment is described in detail in which the cam member is pivoted in the opposite direction to release the safety gate from the direction in which the safety gate is rotated to open the hook, the cam member being protected by the structure of the safety gate from accidental pivoting to release the safety gate.

Abstract: A circuit for controlling operation of an electromagnet includes a source of voltage connectable to the electromagnet to produce current flow in one direction and develop a magnetic force therein. A dissipating circuit is connectable to the electromagnet to form a closed loop and has impedance means for dissipating stored energy with gate means between the closed loop and the source producing current flow from the source through the closed loop when the residual potential drops to the potential of source and produce reverse current flow through the magnet. The circuit also has a reverse current limiting means in parallel with the impedance means and includes a manually variable resistor to adjust the limit of reverse current flow.

Abstract: Method and apparatus for effecting perforation of a well casing with a casing gun while maintaining pressure in the well bore at a lower level than the pressure in the surrounding reservoir at the point of perforation. Before production tubing is run into the well, the casing gun is deposited in the bore below the desired production level. After the tubing is installed, borehole pressure is reduced to the desired level by swabbing the tubing and an automatic coupling and decoupling pickup tool is lowered on a wireline through the tubing and attached, mechanically and electrically, to the casing gun. The casing gun is then raised to the production level, as measured by locating the casing collars. Whe the gun is properly located, it is activated through an electrical cable carried along with the wireline. The casing gun perforates the well casing and surrounding formation, and is then decoupled from the wireline to be left in the well.