Abstract: A novel two part loading fixture in which one part is a shipping tray in which electrical leads are shipped by the lead manufacturer to the manufacturer of the electronic devices in which the leads are to be incorporated, and another part is a rigid frame for use by the device manufacturer for locating said tray relative to the holes of a transfer plate.

Abstract: A control system for regulating the operation of an electric resistance heating grid for de-icing or de-fogging a window of an automobile in accordance with the temperature of the window includes a manually operable switching relay closed by the driver to start the flow of current through the heating grid upon the accumulation of an unacceptable amount of ice or fog on the window. A holding circuit maintains the switching relay closed until such time as an electric resistance-type temperature sensor in heat exchange relationship to the window surface on which the ice or fog accumulates operates through a transistorized circuit to break the holding circuit when the window reaches a preselected temperature high enough to dissipate any fog or ice accumulated thereon.

Abstract: The disclosed system comprises one or more stationary dispensers associated with drinking fountains for farm animals, for dispensing predetermined doses of drugs or nutrients, operating in cooperation with a plurality of portable units constructed for individual animals. The portable units are designed to interact electronically with a stationary dispenser to control the amount and timing of the doses. The stationary dispenser includes in circuit relation, an interrogator-transmitter, a reply receiver, and a liquid dispenser responsive to the reply receiver. Each portable system comprises a coded passive transponder, a timer, and a memory element. When an animal comes within range of the stationary dispenser, its portable transponder is interrogated. A coded reply is sent by the animal's transponder indicating whether animal has received a dose within a preceeding preselected time interval. If a positive reply is received by the stationary dispenser circuit, no further action is taken.

Abstract: An electro-mechanical relay, particularly for automotive use, characterized by quietness of operation in which the armature coil, spring arm and contact elements are so arranged that the mating surfaces of the contact elements lie substantially in a single plane when in open position and are closed without audible noise by relative sliding movement in said plane.

Abstract: A method of forming a flat plate swing valve shell from a commercially available forged or swaged pressure vessel head having circular sections in horizontal planes and elliptic sections in vertical planes. The shell is formed by cutting the head along a vertical axis to form two halves, rotating the halves outwardly with respect to each other and repositioning them so their original base edges are juxtaposed and the two halves form a continuous enclosure having an open base and which has elliptic sections in both vertical and horizontal planes, and welding the two halves along said base edges to form a unitary valve shell.

Abstract: A laminated nut composed of laminations of tapped conical spring washer segments in which at least one of the segments has a different load-deflection ratio than another segment, thereby to provide for more uniform loading of the threads on the laminated segments, and to provide for self locking of the nut on the bolt by thread interference. A lock mechanism is also provided that automatically and positively locks the nut to the associated bolt, as is required for safety purposes and to avoid legal charges of product liability.

Abstract: An electromechanical switching device has a housing containing an armature. This armature is mounted in the housing to reciprocate between a closed and an open position. A coil mounted near the armature in the housing can magnetically hold the armature in its closed position. A manually operable member is mounted in the housing to reciprocate between a set and a reset position. This member can be moved into the set and reset positions to drive the armature toward its closed and open positions, respectively. Being arranged in this fashion the coil can be operated by a relatively small current. This current may be insufficient to attract the armature from its open to its closed position. However, the full travel of the armature is accomplished by the combined effects of the manually operable member and the coil.

Abstract: A centrifugal separator cleans a stream of fluid by passing the same through a rapidly rotating tapered duct. Rotation of the duct creates centrifugal force which causes pollutants carried by the stream to collect on a duct wall and to flow along the wall in a direction opposite to the direction of flow of the fluid through the duct.

Abstract: An apparatus for continuously manufacturing finely divided magnesium, and similar metals, in which a liquid stream of magnesium ejected from a nozzle is impacted by a high velocity stream of inert gas to "atomize" the liquid magnesium, including means for the intermittent entrainment of an abrasive powder in the inert gas stream to remove the build-up of solid magnesium or magnesium compounds that otherwise would collect on the end of the nozzle and interfere with continuous operation of the "atomizing" process.

Abstract: An automatic ball serving apparatus for serving tennis balls for practice purposes. Balls which are loaded into a feed container are passed through a main bucket and fired through a firing barrel by compressed air. A pair of motors oscillate the firing barrel independently in both horizontal and vertical directions so that balls will be fired having random trajectory, distance and lateral displacement.

Abstract: A finned heat exchange tube is made from a refractory metal such as titanium, titanium alloy, stainless steel, and iron-nickel alloy containing more than 10% nickel, by rolling into the outer surface of a tube of said metal integral fins having a low fin height of less than 0.045 inch (preferably less than 0.033 inch in titanium and less than 0.045 inch for stainless and the iron-nickel alloys), a high fin density of at least 26 fins per inch of tube length (preferably from 27 to 30 fins per inch), and a high fin surface area per unit length of tube which is at least 2.4 times greater than the comparable surface area of the tube prior to finning. The thickness of the tube wall underneath the finned area preferably is made less than the height of the fins.

Abstract: A bridge for a stringed instrument, preferably a violin, for enhancing the volume and tonal quality of the instrument. The bridge is constructed of wood and has a broad fan-shaped face and a pair of depending lower legs having a U-shaped indentation between them. The face has a pattern of a plurality of holes drilled therethrough to improve the sensitivity of the bridge, thereby improving its quality. An alternate embodiment includes slots cut through the drilled holes.

Abstract: Method and apparatus for producing high grade phosphate rock from low grades, slime or tailings by subjecting the low grade rock, slime or tailings to a calcination treatment at a temperature within the range from 1000.degree. F. to 1600.degree. F., and preferably from 1400.degree. F. to 1600.degree. F., until a fraction of said rock, slime or tailings becomes magnetically attractable, and subjecting the treated material to a high strength magnetic field to separate the same magnetically into at least two fractions, one of increased BPL and one of decreased BPL.

Abstract: A chimney fire detector has a pair of entwined conductors mounted at the outlet of the chimney. A sensing device can detect electrical contact between these conductors. An insulating spacer is mounted between these conductors for separating them. This spacer is formed of material which allows the conductors to pass through the material and touch in response to temperatures in excess of a predetermined magnitude. This predetermined magnitude corresponds to the temperature at the outlet of the chimney during a chimney fire.

Abstract: Apparatus and method for automatically assembling elastic bulbs to fragile tubular elements, such as the bulbs and pipettes of medicine droppers, in which a bulb and a tubular element held in axial alignment in a fixture are assembled by pressure exerted on the tubular element in the direction of the longitudinal axis of the tubular element, including means for automatically inserting said bulbs and tubular elements in said fixture and aligning the same as aforesaid.

Abstract: Apparatus and method for uniformly spreading a flowing stream of dry solids, which may include solid particles and lumps of varying sizes, with minimal segregation, which utilizes an adjustable dam having a curved crest for forming in the flowing stream a mass of solids in the shape of a segment of a cone, over the surface of which the stream is spread from a relatively narrow stream at the apex of the cone to a relatively wide stream at the base of the cone, and including a mechanism for adjusting the dam to vary the degree of transverse arc curvature of the spreading surface. As an alternative, the spreading surface may be formed by a series of elongated, adjustable bars.

Abstract: Apparatus and method for aligning telescopes with the axis of rotation of the earth, which utilizes a pole finder telescope having its optical axis offset from its mechanical axis by an angle which is equal to or a function of the angle by which the reference star is offset from the earth's axis of rotation at the time the alignment is being made.

Abstract: A back brace for the treatment of scoliosis having posterior and auterior metal uprights secured to a pelvic girdle and extending vertically upward to a level just below the level of the patient's clavicles, and having laterally extending arms fastened to the upper portions of said vertical uprights for encircling the space to be occupied by the upper torso of the patient at the level of, and just below, the patient's armpits.

Abstract: The principal components of this transmission include a pump, a turbine, a primary planetary gear set, a secondary planetary gear set and a compound planetary gear set. In one embodiment the compound planetary gear set has a compound planet gear element with two planet gears connected to each other on each planet shaft. The largest planet gear engages a ring gear and a first sun gear and the smaller planet gear engages a direction reversing planet idler gear which engages a second sun gear. The ring gear of the compound planetary gear set is preferably connected to the ring gear of the primary planetary gear set. The second sun gear is preferably connected to the ring gear of the secondary planetary gear set. The first sun gear is preferably connected to the sun gear of the primary planetary gear set and to the planet carrier of the secondary planetary gear set.

Abstract: Automatic ball serving apparatus for serving, lobbing, volleying or smashing balls, such as tennis balls, for practice purposes wherein two cans or buckets are vertically stacked to form a lower generally cylindrical compressed air chamber and an upper generally cylindrical ball feed chamber, a ball firing barrel outside said lower bucket connected to both said ball feed chamber and to said compressed air chamber so that balls fed into said firing barrel will be fired therefrom by the compressed air in said lower chamber, and a stand for oscillating said apparatus while balls are being fired from said barrel so that the trajectories of different balls will lie in different directions.