Abstract: At the machine side of a coke oven, a leveling rod is moved into a coke oven chamber through an opening surrounded by a frame on a removable oven door. A movable hood is positioned to define a horizontal extension to the opening in the coke oven door to thereby enclose a portion of the leveling rod during its movement into the oven chamber. A support member within the hood is arranged below the lower edge of the frame that surrounds the opening in the door. Bracket plates are carried by the support member such that the leveling rod moves upon the top surface of the uppermost plate. A removable bolt is employed to secure the bracket plates to the support member. The number of bracket plates used determines the elevation at which the leveling rod moves into the oven chamber. An extension insert is removably attached to the roof of the hood above the leveling rod.

Abstract: A tracheal tube having straight inner and outer end portions integrally connected by a curved central portion contains a cannula that can be removed from one end. The cannula is a normally straight one-piece flexible tube of plastic circumferentially corrugated from approximately its inner end outwardly to a point at least as far as the outer end of the curved central portion of the tracheal tube. The corrugated wall of the cannula stiffens the part of the cannula that extends through the curved central portion of the tracheal tube to prevent it from collapsing when the cannula is inserted in the tracheal tube.

Abstract: A method for producing cores and foundry moulds.The method is characterized in that foundry sand, a binder, and a low temperature reaction agent are mixed in a controlled atmosphere, and in that the mixture is maintained under these low temperature and controlled atmosphere conditions until it is introduced into the core box, the temperature and atmospheric control are then eliminated and the temperature raised slightly if necessary.

Abstract: Alternative tandem arrangements of rolling mill stands are formed by supporting a plurality of separate and independently operable rolling mill stand assemblies upon one or more pedestals extending along a given passline. In one disclosed embodiment, a single pedestal extends along the passline and includes an angularly-shaped plate extending parallel to the passline and including inclined surfaces for carrying rolling mill assemblies at spaced locations. Auxiliary adapter pedestals are disclosed to position a rolling mill stand such that the rotational axes of its rolls are inclined in a different relation to the horizontal than when the mill stand is supported directly by the angularly-shaped plate on the pedestal. In a second embodiment, a plurality of side-by-side pedestals extend along a passline. Each pedestal defines a separate rolling mill support surface with the support surfaces of adjacent pedestals lying in intersecting support planes. An improved rolling mill stand assembly is disclosed.

Abstract: A power supply system for analog computers and the like where reliability and fail-proof performance are paramount. At least two separate power supplies are connected in parallel to a plurality of operational amplifiers contained in separate channels of an analog control system. Isolation diodes are used to prevent a short-circuit in one power supply from being reflected into the other supply and causing loss of both.

Abstract: A floating cover that is spaced inwardly from the side of an upright tank is electrically grounded to the tank by a plurality of cable loops disposed in substantially vertical planes around the cover and spanning the space between it and the tank side wall. One side of each loop is secured to the side of the cover while the opposite side of the loop engages the side of the tank. The loops are compressed laterally between the cover and the tank side wall to maintain sliding electrical contact with that wall as the cover moves in the tank.

Abstract: A shelf having front and rear ends is adapted to rest on a horizontal bar spaced from a wall to which it is attached. A vertical stabilizing member extends downwardly from the rear end portion of the shelf between the bar and the wall and has an adjusting pin projecting from its back into engagement with the wall to hold the shelf horizontal while the back of the shelf engages the wall. The pin also projects from the front of the stabilizing member and supports a nut that is adjusted forward on the pin to engage the back of the bar to hold the rear ends of the shelf and pin against the wall.

Abstract: A high energy sensor, particularly adapted for use in analyzing a high power laser beam, which preferably utilizes the change in resistance of a thin-film element as a function of temperature to determine the energy of the beam per unit of area. The sensor itself comprises a top platinum resistor element separated from a botton platinum resistor element by a thermal resistor formed of insulating material. On top of the upper resistor is an electrical insulator, and above this insulator is a platinum reflector protected by a dielectric coating, the reflector being utilized to reflect the major portion of incident wave energy. The assembly is carried on a cooled beryllium oxide substrate or the like in contact with the bottom resistor. A plurality of such sensors can be arranged in an array, and each individual sensor interrogated in sequence to determine the energy distribution of the laser beam.

Abstract: A jet flow deflector is provided on an aircraft engine nacelle. In high speed cruise conditions, the deflector engages in a recess in the upper part of the nacelle and forms part of the jet nozzle, providing an efficient flow passage and an outer surface having minimum drag. For low speed flight, the deflector is moved downward and aft with respect to the nacelle to deflect the jet flow downward to increase the lift by use of the Coanda flap principle. By moving the deflector in this manner, an additional flow area is created above the deflector and at one side to increase the effective nozzle area. If desired, the deflector may be divided into two or more segments which are spaced from each other in the low speed configuration.

Abstract: An electric drive motor for an underground mining machine includes a capacitive-type detector supported within the motor housing for contact by fluid that may penetrate beyond the motor shaft seals and the like. The capacitance of the detector decreases when fluids penetrate the motor shaft seals and electrical circuitry detects such a capacitance change of the detector for indicating the presence of fluids within the motor housing to prevent damage to the motor windings. The disclosure includes several forms and arrangements of the detector for the electric motor.

Abstract: A mask is provided with a breathing opening, directly in front of the outer end of which there is a chemical cartridge that is secured to the mask. The cartridge has an exhalation passage extending through it from front to back, with its rear end registering with the breathing opening. A check valve in the inhalation passage allows air flow only into the mask. In the exhalation passage there is a carbon dioxide removing and oxygen generating chemical. A breathing bag is supported by the cartridge and communicates with the front end of the exhalation passage. The mask is provided with an inhalation check valve allowing air being inhaled from the bag to bypass the chemical.

Abstract: Improvements in apparatus for converting one form of energy into another form with the use of an essentially closed, continuous loop passageway containing a plurality of freely movable, unrestrained bodies. Force generated by expansion of a gas is applied to successive bodies in one region of the passageway to propel them around the passageway in one direction. At another point in the passageway, at least a portion of the kinetic energy of the propelled bodies is converted into another form of energy. Each body, before being propelled around the passageway, enters a compressor section where it compresses the gas in the passageway, the compressed gas being bled off through a check valve where energy is added to it before it is used to propel a body around the passageway in the expander section which immediately follows the thrustor section.

Abstract: A bearing construction is provided having a temperature responsive lubrication system. The invention is particularly applicable to bearings having hard, wear resistant bearing surfaces, such as ceramic surfaces, lubricated by solid lubricants placed in reservoirs in the bearing surface. Preferably, expansion members or plugs of material of higher thermal expansivity than the bearing material are placed in the reservoirs under the lubricant. Upon heating of the bearing due to friction or wear of the bearing surfaces, the lubricant expands out of the reservoirs onto the bearing surface to form a lubricant film and reduce the friction.

Abstract: Structural reinforced thermoplastic laminates capable of supporting loads in at least two directions and containing by volume about 45% to 65% fiber reinforcement. The laminates can be used with or without metal cladding.

Abstract: The switch includes an annular permanent magnet, a plate of soft magnetic material at one side of the magnet, a stationary electric coil at the opposite side of the magnet, and an unrestrained free-flying member of soft magnetic material coaxial with magnet and coil and movable axially in them toward and away from the plate. It normally is held by keeper means in a rest position away from the plate, but means are provided movable relative to it for first engaging and then pushing it toward the plate until the magnetic attraction between the magnet and the free-flying member causes that member to fly from the pushing means to the plate at high velocity. This creates a rapid change in flux in the free-flying member and produces a voltage pulse in the coil.

Abstract: An adjustable voltage alternating current power supply is provided which is especially suitable for supplying loads of variable resistance. The power supply consists of a transformer having two secondary windings with solid-state switches for alternatively connecting the secondary windings in either parallel or series, and with a firing control circuit for changing the connection of the windings from parallel to series at a predetermined point in each half-cycle of the voltage to adjust the effective output voltage so that constant output power can be maintained, or the output power can be varied in any desired manner.

Abstract: An enclosure in the form of a shed is disposed to extend along the entire length of the battery of ovens at the coke discharge side thereof. The shed roof rises from the top of the ovens to a shed wall spaced outwardly from the ovens beyond a track for a quench car. The shed wall essentially supports the weight of the shed roof in a cantilever fashion. Within the shed a baffle plate, carried by the shed wall, extends in an upward direction toward the battery of coke ovens. A conveyor is carried by the shed wall along its length for conveying solid particles of coke dropping from the baffle plate onto the conveyor. The shed further includes a pipe for extracting smoke within the shed which occurs when hot coke is pressed out of an oven chamber. The smoke extraction pipe is carried in one embodiment by the shed roof vertically above the baffle plate, in a second embodiment, by the shed wall above the upper end of the baffle plate and in a third embodiment by the shed wall at the lower end of the baffle plate.

Abstract: The present invention generally relates to nuclear fuel reactors, and more particularly relates to a method and apparatus, based upon vibration detection and analysis techniques, for detecting a failure or rupture of fuel elements or tubes containing nuclear fuel.

Abstract: A power supply for a control system in which a plurality of loads in the form of transducers, sensors and the like are employed. The loads are isolated from each other, the system being such that any load can be shorted without affecting operation of any other load circuit and without damage to the power source components. This is achieved with the use of a saturating transformer and a series inductor in the respective load circuits which isolate each circuit from the others while at the same time providing for excellent voltage regulation in the overall system.

Abstract: In a coke oven, a coke discharge opening communicating with the coking chamber is closed by a door which carries an angularly-shaped packing strip having an extended edge surface for engaging a door frame. The packing strip is adjustably supported by clamping plates attached to the door. The extended edge surface of the packing strip is resiliently urged at spaced locations about the periphery of the door by means of a spring-biased plunger carried by guide plates that are adjustably positioned on the door. The disclosure additionally provides stop plates at opposite sides of the door frame for engagement with adjustable bolts supported by the door for adjustably locating the door relative to the door frame.