Abstract: A radiographic system comprising an X-ray source disposed to direct an X-ray beam through an adjustable shutter aperture in an aligned collimator and onto an image receptor in a holder located at a preselected distance from the source; and automatic means for preventing an X-ray exposure until prescribed operating conditions have been satisfied, the automatic means including read-only-memory means for storing the prescribed conditions therein and ascertaining whether or not the prescribed conditions have been met.

Abstract: An X-ray tube comprising an evacuated envelope having therein a plurality of anode target materials suitably disposed for bombardment by respective electron beams, either simultaneously or alternatively, each of the electron beams being independently variable with respect to one another.

Abstract: Apparatus for separating magnetic materials from nonmagnetic materials in a supply of mixed waste material, comprising an inclined rotary drum having loading means for introducing a continuous flow of mixed waste materials into the drum, means for simultaneously directing a stream of air at relatively high velocity through the drum to entrain and thereby remove light materials from the mixture therein out of the higher end thereof, means for rotating the drum to move heavy materials toward the lower end thereof, and magnetic means for selecting magnetic materials from the separated heavy materials and removing the magnetic materials separately from the drum.

Abstract: A rotating anode target for X-ray tubes comprising a substrate disc provided with an annular marginal portion having opposed bevel surfaces convergent toward an outer peripheral edge of the disc, one of the surfaces being coated with a layer of X-ray emissive material which extends around the peripheral edge and terminates in an annular feathered edge merging with the opposed bevel surface of the disc.

Abstract: A materials separator for segregating nonferromagnetic conductors from commingled nonferromagnetic materials, the separator including guide means for directing nonferromagnetic materials into a stream, and steady-state magnetic means comprising a plurality of north and south magnetic poles arranged in stripes of alternating polarity at a substantially uniform angle to the stream for establishing in the path of the stream a periodic series of oppositely directed, static magnetic fields which induce eddy-currents in the conductors.

Abstract: A screw conveyor for moving water-laden materials from one location to another comprising a feeder screw extending longitudinally within an enclosing duct or housing and a dewatering cylinder closely encircling the screw and comprised of closely spaced elements of substantially triangular or teardrop cross-sectional shape to remove water from the material as it is moved progressively along the duct by the flights of the screw.

Abstract: A magnetic metering system comprising a transversely magnetized cylinder carrying a radially extending pointer and mounted for axial rotation between a diametrically disposed pair of biasing magnets and a diametrically disposed pair of solenoid coils, and rotation compensating means disposed between the biasing magnets and the solenoid coils for providing the cylinder and pointer with an angular movement proportional to changes in a current flowing through the solenoid coils.

Abstract: A fluid flow system including a pressurized fluid source operatively connected through a uni-adjustment flow dividing valve to a plurality of loads, the valve comprising a hollow housing having movably disposed therein a channelled member which provides means for simultaneously adjusting the flow of fluid from the source to each of the respective loads in a smooth transitional manner.

Abstract: A push-to-engage device comprising a hollow knob having axially disposed therein an independent bushing provided with a fastener for bindingly engaging an inserted end portion of a rotatable shaft and with a plurality of recesses disposed for engagement with keys protruding inwardly from the knob, and an external resilient device coupled to the knob for positioning the keys in spaced relationship with the recesses in the bushing.

Abstract: A method of making an integral toroidal magnet comprising the steps of compacting suitable magnetic powder material into a toroidal shape while subjecting it to a particle aligning magnetic field, hot pressing the compacted powder toroid in a confining die at a temperature and pressure sufficient to cause shrinkage of the toroid in the axial direction and provide a packing density greater than 93% of the theoretical maximum value and substantially unidimensional shrinkage, heat treating the toroid at a temperature sufficiently higher than the hot pressing temperature to achieve an enhanced crystallographic alignment equivalent to the alignment obtained by sintering, annealing the toroid at a temperature sufficiently lower than the heat treating temperature to provide a magnetic coercivity similar to the coercivity achieved by annealing after sintering, and magnetizing the heat treated toroid in the direction of crystallographic alignment.

Abstract: A rotary drum air classifier system which includes a side feed hopper by which mixed materials to be separated are fed to a screw feed which deposits the materials inside the drum for major separation into light and heavy materials, the screw feed being longitudinally adjustable and including air injection means for fluidizing the mixed materials as they are being transported to the drum and thus accomplishing a preliminary stage of air classification during the time the mixed materials are transiting the length of the feed screw.

Abstract: An X-ray cassette holder having adjustable track means for slidably receiving a film cassette and positioning it longitudinally, the holder also including automatic clamping means locked in the open position and actuated by insertion of the cassette to close on opposing sides thereof for centering the cassette transversely in the holder.

Abstract: An adaptive actuator system comprising a rotatable shaft operatively coupled to a torque biasing means for biasing the rotational direction of the shaft, and also operatively coupled to a counter torque developing means for sensing the rotational bias of the shaft and providing a counter torque proportional to the rotational bias.

Abstract: X-Ray tube monitoring apparatus comprising a shockproof housing having insulatingly disposed therein for electrical connection between the anode of an X-ray tube and a high voltage source a current sensing means which is operatively connected to opto-electronic means for transmitting a linearized light output signal corresponding to an anode current passing through the sensing means safely out of the shockproof housing to a relatively low voltage amplifying and display means.

Abstract: An X-ray tube comprising a tubular envelope having therein a filamentary cathode operatively disposed for directing a beam of electrons toward a spaced anode target, the cathode being insulatingly supported in a slotted open end of a focusing cup and extending longitudinally between an insulated pair of spaced conductive ears, and including means for applying respective electrical potentials to the anode, cathode, focusing cup, and each of the conductive ears.

Abstract: An appliance for sterilizing and melting plastic items such as found in hospitals or the like, for example, which appliance includes a chamber containing a foil casing within which the items are placed, and means for heating the chamber for a temperature and time cycle sufficient to soften or melt the plastic items which when cooled will form a solid body of plastic material containing within it other non-melted disposable items such as might have been included with the plastic items.

Abstract: An air classifier drum for receiving mixed materials and separating them into light and heavy materials, the heavy materials being dropped from one end of the drum during operation onto a conveyor, the drum being rotatable about an axis disposed at a selected angle to the horizontal and being vertically adjustable to the selected angle, the conveyor being vertically adjustable with the drum so that it will be constantly retained at a reasonably close-spaced relation to the drum to assure minimum impact of the heavy materials on the conveyor as they are discharged from the drum.

Abstract: A materials separating apparatus which comprises a conveyor on which materials to be separated are deposited and conveyed to a hopper mounted on an adjustable platform, a rotary drum air classifier mounted on said platform, and transport mechanism connecting the hopper with the interior of the drum whereby materials may be moved from the hopper to the drum for separation therein, the platform being movable together with the hopper and drum whereby the drum may be positioned at a selected angle of inclination, and the conveyor and hopper being interconnected in a manner whereby the conveyor remains in position for proper deposit of materials in the hopper regardless of the position of the hopper when the platform is moved.

Abstract: A heat injector gas burner having controlled air flow for assuring positive repetitive ignitions, comprising an elongated tubular casing having therein a short tubular flame holder into which gas is introduced, means at one end of the casing for metering the flow of air into the casing and simultaneously into the adjacent end of the flame holder, and ignition means within the casing external to and adjacent the opposite end of the flame holder, which metering means produces controlled velocity of air flow within the casing both inside and outside the flame holder, the air flow through the flame holder being metered whereby a sufficiently rich gas-air mixture is provided to insure first ignition, and a sufficiently lean mixture is provided assuring positive repetitive subsequent ignitions.

Abstract: An oven having an air inlet opening in its lower region and an exhaust opening in its upper region, and at least one gas-fueled burner within the oven, one of the openings containing a baffle variably movable into and out of closing relation to the opening in response to heat-sensitive actuating means whereby control of stack action within the oven is achieved so that proper air supply to the burner is permitted while simultaneously obtaining decreased heat loss through stack action.