Abstract: An oil seal of the type having a metallic reinforcement rig whose outer peripheral portion is oil-tightly fitted into a housing, characterized in that after the formation of fabrication of said metallic reinforcement ring, the latter is subjected to a nitriding hardening process so that its durability of a raw material of said metallic reinforcement ring; and a seal lip of formed over the inner peripheral edge portion of an annular flange portion of said metallic reinforcement ring.

Abstract: This invention provides a chuck for a glassworking lathe which includes a chuck body rotatable with a drive spindle nose about a longitudinal axis and a handwheel rotatable about the same longitudinal axis. A locking device is provided for releasably locking the handwheel to the chuck body for unitary rotation of the handwheel with the chuck body. A spiral gear or scroll is fixed to the handwheel to define a radially extending path of spiral movement relative to a longitudinal axis upon rotation of the spiral gear. A plurality of jaw base members include spiral gear grooves for meshingly engaging the spiral gear, are angularly spaced about the axis and are movable radially with respect to the axis upon rotation of the spiral gear engaging the gear grooves formed in the bottom of each of the jaw base members.

Abstract: A voltage controlled element includes first and second pairs of transistors where bases of two of the transistors are connected to a reference voltage and bases of the remaining two transistors are connected to a control signal, emitters of transistors of respective pairs are connected together, differences in collector currents between transistors of said pairs define output signals from said element, including feedback means for providing as a portion of a signal input to means for drawing currents from said connected emitters signal outputs of said element.

Abstract: A salt bridge reference electrode, immersible in an electrolyte, contains a metal electrode contacting water saturated salt crystals and is configured so both evaporative loss of contained water and diffusion loss of contained salt crystals are minimal. An electrolytically conductive plug, having metallic salt crystals in suspension, within the cell, maintains electrolytic continuity between the water-saturated salt crystals and the surrounding electrolyte while minimizing loss of salt crystals from the saturated water into the surrounding electrolyte by osmosis.

Abstract: A cryogenic fluid transfer line is provided which comprises an interior conduit for passage therethrough of cryogenic fluid, an exterior conduit concentrically spaced about the interior conduit and defining the exterior of the fluid transfer line, an annular heat transfer shield generally concentric with and interjacent to the interior and exterior conduits and including at least one longitudinally extending resilient arcuate member with a longitudinally extending generally arcuate hooking edge, at least one longitudinally extending resilient arcuate member with a longitudinally extending generally arcuate catching edge, where the hooking and catching edge members are interlockingly engageable with each other when the member including the hooking edge is flexed to a smaller arcuate radius, positioned with its hooking edge inboard of the catching edge and then permitted to relax, each set of engaged hooking and catching edges defining a hollow generally cylindrical nest having a substantially closed curved sur

Abstract: A heating stove has a fire box composed of first and second pluralities of parallel aligned connected vertically oriented curved open-ended conduits lower extremities of the conduits of said first and second pluralities being aligned for contacting a common planar surface to support the stove, with the fire box further being formed by generally planar front and back plates, of substantially the same size and shape, with the front plate having an inlet port therethrough and the back plate having an exhaust port therein. The conduit central portions are largely within the stove fire box. A baffle within the fire box promotes three-pass flow of hot air across the conduit surfaces within the fire box. The first and second pluralities of curved conduits are opposed and in interdigitated engagement. Curved strips separate the curved conduits and thus facilitate stove construction with the conduits in interdigitated engagement.

Abstract: Boat's engine speed and direction of rotation of the engine's propeller shaft are remotely controlled at the helm. Movement of hand control knobs through a semicircular area controls the full range of speed of the engine as well as its forward-neutral-reverse actuator. The knobs rotate a pulley structure which steps up rotation to flexible shafts. The stepped-up rotation of the flexible shafts is converted to linear motion by ball screw cylinders having output members connected to the engine's speed and propeller shaft actuators.

Abstract: Welding filler wire feed apparatus includes a handpiece, means for advancing filler wire through the handpiece in response to a signal produced by a finger pressure-sensitive switch on the handpiece, and a flexible conduit, connecting the handpiece to filler wire advancement means, for passage of filler wire therethrough. Rate of wire advancement through the handpiece is adjustable.

Abstract: A centrifuge for separating a solids-liquid slurry includes a rotor, rotatable about a vertical axis, with a vertically upstanding central drive shaft, frusto-conical discs vertically spaced one from another about the shaft, a hollow housing connected to the shaft and rotatable unitarily therewith, surrounding the discs and spaced therefrom, with the housing having a frusto-cylindrical central portion with horizontal nozzles for discharge of thickened solids therethrough and having upper and lower frusto-conical skirt portions which taper from the central portion towards the shaft. A stationary casing surrounds the rotor. Space between the casing and the central drive shaft defines a liquid outlet; a thickened solids outlet extends from the lower portion of the casing. A stationary inlet feed tube extends into the housing through a lower portion of the casing.

Abstract: A connector for affecting aseptic juncture of two bodies for flow of fluid therebetween comprises a female element having a base, a conduit passing through the base, a cylindrical sheath extending from the base and concentrically spaced about a portion of the conduit, an annular exterior wall extending from the base a greater distance than the sheath and concentrically spaced thereabout and pellicular means for sealing the annular exterior wall at a position remote the base, with a male element telescopingly engageable with the female element and including a sole, a conduit passing through the sole and tubular means extending from the sole a greater distance than the conduit and concentrically spaced thereabout. Means are provided for retaining the male and female elements in telescoping engagement.

Abstract: A vertical centrifuge has a conveyor vibration damper resiliently and asymmetrically biased against the centrifuge conveyor. The damper effectively damps the centrifuge bowl-conveyor assembly so the assembly does not approach resonant frequency during operation. The damper is dry and does not require lubrication.

Abstract: An improved method is provided for forming rigid friction material structures from dry friction material having as major constituent elements substantial quantities of both asbestos fiber and thermosetting resin, whereby release of asbestos fibers to the atmosphere is substantially eliminated. The improved method builds upon known molding and charge preforming techniques which have been practiced using apparatus available heretofore.

Abstract: A gas purifier having a removeable sample canister apparatus and gas adsorber in combination is provided for use in atmospheric containment and cleanup systems in nuclear power plants and other air and gas filtering applications. The sample canister is particularly adapted for removeable attachment to and use in combination with a gas adsorber having a plurality of parallel spaced filter beds. The sample canister is designed to permit the sampling of adsorbent material at discrete time intervals without disturbing adsorbent material in the filter beds and without disturbing the structural integrity of the gas adsorber to which the sample canister is attached.

Abstract: An insect trap is in the form of a hollow polygonal body with an insect-attracting insecticide applied to an inner surface. One or more holes in a downward facing submedial surface of the trap allow insects to enter the trap interior. The trap self-deploys from a single scored planar sheet due to force applied by resilient means secured to positions on the planar sheet corresponding to separate surfaces of the polygonal body.

Abstract: Methods for removing radioactive isotopes from contaminated gas streams for use in atmospheric containment and cleanup systems in nuclear power plants are provided. The methods provide for removal of radioactive isotopes from a first portion of the contaminated stream, separated from the remaining portion of the stream, so that adsorbent used to purify the first portion of the contaminated stream by adsorption of the radioactive isotopes therefrom can be tested to determine the adsorbing efficacy of the generally larger portion of adsorbent used to purify the remaining portion of the stream.

Abstract: Apparatus for delivering boluses into recurring arrays of longitudinally moving receptacles has an endless conveyor of connected slats with recesses for receipt of boluses. The slats travel in two opposed parallel tracks. Spaced parallel guides segregate boluses horizontally in a conveyor filling area. In one embodiment transverse dividers protrude to separate adjacent slats in the conveyor filling area and retract outside the filling area, allowing the conveyor to deliver boluses into recurring arrays of moving receptacles as the slats move substantially complementally with the receptacles.

Abstract: Improved apparatus and methods for tracking a stylus on a rotating disk are disclosed. The apparatus preferably takes the form of an inertially balanced four bar linkage. Also disclosed herein are improved apparatus for supporting a rotating disk, improved apparatus for driving a rotating platter which supports a disk and improved apparatus for following a stylus and supplying power thereto as it crosses the disk.

Abstract: An improved method is provided for forming rigid friction material structures from dry friction material having as major constituent elements substantial quantities of both asbestos fiber and thermosetting resin, whereby release of asbestos fibers to the atmosphere is substantially eliminated. The improved method builds upon known molding and charge preforming techniques which have been practiced using apparatus available heretofore.

Abstract: A rotary tabletting press, including a die table rotatable about an axis, has improved apparatus for feeding powder to the table. The improved feed apparatus includes a rotatably sliding valve at a discharge orifice at the bottom of a powder storage hopper, a conduit conveying powder from the hopper to the die table and apparatus which adjustably maintains the discharge end of the conduit a preselected distance above the die table.