Abstract: A statically balanced safety lathe dog for use with lathes of the type normally found in the average machine shop and which is characterized by the eccentricity of its mounting on the work to be turned whereby to effect a camming action in operation on the lathe and thereby act to push an operator's hand away from a danger area by a wiping action because of the sliding contact created by the camming feature of the dog rather than by the striking action of the typical or usual lathe dog.

Abstract: A snap-on coupler bearing plate for application to resiliently supported coupler carriers of AAR standard F type interlocking coupler applications, in which the bearing plate is in the form of a channel shaped member formed from an ultra high molecular weight polymer of dry self lubricating characteristics that is shaped to overlie and be snap fitted to the load support plate of the coupler carrier. The bearing plate is of integral one piece construction and defines an upwardly facing slide surface on which the coupler wear plate rides that is characterized by effecting resurfacing of the coupler wear plate surfacing engaging same to make such wear plate surfacing effectively resistant against wear.

Abstract: Direct current ballasting and starting circuitry for efficiently operating a gaseous discharge lamp on direct current. A series-pass switching transistor in one of a pair of input lines alternately switches between on and off states to periodically supply pulses of energy from a source of direct current voltage. During steady-state operation, current sensing circuitry limits the maximum current conductable by the transistor such that the output of the circuitry is current regulated. A filter, in series with the transistor, smoothes the pulses of energy delivered by the transistor into direct current with a comparatively small alternating current component. Starting circuitry in series connection between the filter and an output terminal, senses the nonionized state of the lamp and provides a voltage pulse of sufficient magnitude and duration to initiate ionization in the lamp, but permits uninterfered passage of current through the filter to the output.

Abstract: A plastic grip ring for a caster assembly comprising a ring shaped member having a tapered outer perimeter with an interior surface including a cylindrical collar portion, a larger diameter cylindrical bottom portion merging with the collar portion by an arcuate, tapered connecting portion and a notched area extending vertically of the interior surface wherein the bottom portion and the notched area provide means for mounting the ring over the head of a caster stem.

Abstract: Apparatus for propelling a skate board with air currents. A base plate is releasably secured to the skate board by adjustable straps and has a swivel bearing member attached to the top surface of the plate. Receptacles in the swivel member receive a mast and control shafts and a bearing in the swivel member permits an upper portion of the member to be generally rotatable about an axis of the mast, without any appreciable tilting movement. The control shafts control the angular position of the mast and sail with respect to the base plate and skate board. A substantially transparent sail is affixed at various points along the mast and control handles for receiving the forces of the air currents to propel the skate board.

Abstract: A brake rigging arrangement for high capacity dropped bottom gondola cars of the curved bottom type in which each end of the car up to the dropped bottom is in the form of a planar shear plate that is coextensive with the car end and is highly stressed under load, and is integrated with a stub center sill and body bolster, in which arrangement the rigging is of the double ended car supported type, and at each end of the car, the rigging for that end of the car is applied entirely below the shear plate in question and is integrated with the car end stub center sill at the level of the stub center sill without requiring perforation of the shear plate in the load bearing area of the car end.

Abstract: Method and device for accurately measuring polarization voltage of a measured electrode with a reference electrode in the form of an electrode in direct contact with the ionic conductor and separated in spacing from said measured electrode. The error of ionic conductor IR drop between measured and reference electrodes is corrected by a voltage of opposed polarity connected in series with said reference electrode, made proportional to the DC current polarizing said measured electrode, and adjusted in value to produce a characteristic 0.020 volt separation between transition points of line slope change in the measured initial range of the polarization current-potential relationship. Calibrating circuitry enables an X-Y recorder to accurately plot the current potential relationship.

Abstract: This invention relates to a coupler shank bearing arrangement for supporting a railroad car coupler on its coupler carrier, and more specifically, to a railroad car coupler support arrangement in which the familiar coupler wear plate that rides on the coupler carrier is replaced by a bearing arrangement of the plane bearing type that provides for essentially wear free support of the coupler on its carrier. The coupler shank lower wall is formed with an elongate mounting slot at the location of application of the conventional wear plate, and extending longitudinally of the coupler shank, to which slot is applied a one piece bearing structure formed from an ultra high molecular weight polymer of dry self lubricating characteristics.

Abstract: A method and apparatus for labeling sheeting rolls specifically adapted for labeling wallpaper rolls of which the outer end edge of the sheet that is convoluted to form the roll is free of securement against the roll, wherein the roll is rolled along a runway leading to a labeling station, with the roll oriented to have its free outer end edge in trailing relation with respect to the direction of rotational movement of the roll, as it moves along the runway. At the labeling station the roll is supported by and between a pair of rollers, one of which is driven to rotate the roll for labeling purposes at a predetermined surface speed in the same direction of rotational movement as when the roll moves along the runway.

Abstract: A system of making molds for investment casting in which the patterns are formed from, and the sprue form is coated with, polyethylene glycol having a molecular weight in the range of from approximately 1,300 to approximately 1,600, or its equivalent and having admixed therein as a filler powdered graphite, in which the graphite comprises in the range of from about 35 per cent to 60 per cent by weight of the pattern forming material. The patterns are molded to the desired shape, and to include a gate section, and they are adhered to the sprue form in spaced apart relation by fluidizing the gate section end to make a welded connection with the sprue form coating. The mold is then formed about the patterns that are adhered to the sprue form, leaving the pour cup end of the sprue form exposed, to which heat is subsequently applied to sufficiently fluidize the sprue form coating so that the sprue form can be drawn out of the mold thereby leaving the sprue opening.

Abstract: An electrode probe for accurate corrosion current measurement of metals in ionically conducting liquids. Electrode, and insulator to probe holder, are cylindrical surfaces of the same diameter, to combine minimum disturbance of liquid flow past electrode surfaces with substantially uniform density of current passed between the electrodes. Elastic outside shields form water-repellent interfaces that substantially exclude crevice corrosion and define exposed electrode length and area with precision.

Abstract: A mounting and support arrangement for conveyor belt cleaners which provides for selective incremental rotation of a cross-shaft on which is carried a plurality of belt cleaner blades suspended from mounting arms. A radial ratchet and pawl arrangement is provided exterior to the housing of the conveyor belt to be cleaned which provides for rotation of the shaft to bias the cleaner blades against the belt until the desired blade pressure is attained. A locking pawl secures the shaft against counter-rotation.

Abstract: A traction device for a vehicular tire mounted on a wheel with a gripper tread with a plurality of small protrusions on the inner surface thereof make limited penetration into the tire tread to prevent radial or circumferential slippage of the traction devices about the tire. Larger protrusions on the outer surface of the gripper tread provide improved traction in mud, snow or sand. A pair of side arms, attached to ends of the gripper tread in a spaced apart, opposed relationship and at substantially right angles to the surfaces of said gripper tread, secure the traction device transversely about the tire by resilient engagement with the sidewalls of the tires, hooking cooperation with clips secured between the wheel rim and tire bead, or wedging connection between the brake drum flange and wheel.

Abstract: A modulating valve for railroad car brake cylinders to adapt them for operation with composition brake shoes, in the form of an assembly comprising a bracket plate shaped for mounting between the brake cylinder pipe flange type fitting that connects the brake cylinder pipe to the brake cylinder and the cylinder head, and that is arranged for a three point securement to the cylinder head, and a modulating valve mounted on the bracket plate and in communication with the brake cylinder pipe and brake cylinder to limit the fluid pressures supplied to the brake cylinder so that composition brake shoes will deliver the proper brake applying force to the truck wheels without interferring with proper operation of existing brake control equipment.

Abstract: An apparatus for labeling skeins of yarn or the like comprising a processing way that includes a label supply station, a labeling station, and an apparatus for feeding individual labels from the supply station to the labeling station. The labeling station includes a plurality of pairs of oppositely acting swing arms, with which the label as supported at the labeling station is centered, with the arms of each pair of arms including a first swing arm on the label infeed side of the labeling station and a second swing arm on the opposite side of the labeling station. The swing arms of each pair project from rock shafts extending transversely of the way, and the swing arms at their projecting ends are of semi or open loop shape for cooperatively encompassing the skein to be labeled.

Abstract: This invention is an electronic siren producing a siren sound having a sound wave produced on a slowly rising and falling frequency. A major cycle is pulsed at intervals with variations in frequency. The variations in each major cycle represent minor cycles. The invention utilizes an electronic circuit to effect such major and minor frequency cycles with existing speaker equipment to project the sound. The electronic circuit includes one or more complex variable rate pulse oscillators wherein the variability of the oscillator is flexible so that it can be programmed internally, or controlled by the speed of the vehicle, or controlled by an operator, or dependent on other circuitry in the unit, or random.

Abstract: Rigid composite articles comprising a relatively thin, impression-retaining surface formed of a hard, rigid, room-temperature cured urethane resin and a relatively thick backing and reinforcing are made by casting a thin layer of urethane resin on the surface of a master, curing the urethane, then casting thereon a relatively thick backing layer of a casting material such as plaster or resin.

Abstract: An ultrafiltration cell utilizing two membranes with a magnetic stirring bar system in between. This permits stacking of stirred cells and doubles the efficiency of each cell. Automatic stop to prevent drying is accomplished by employing a floating valve. When using compressed gas for pressure filtration, the floating valve sinks when empty and the valve mechanically stops gas pressure. When an electric motor pump is used, the floating valve keeps a switch on by pressing it upwards and shuts it off when it sinks. The switch could be magnetically or mechanically operated by the floating valve.

Abstract: An uncoupling device for rotary dump cars in which the car couplers are of the bottom operating type, wherein at each end of the car the uncoupling mechanism is made of the same type, and comprising both the rotary and non-rotary couplers of the car being equipped with paddle type lock lifters having a pivotal operating stroke that unlocks and opens the coupler knuckle, and a bail type actuator therefor, wherein the actuator comprises a bail member mounted on the end of the car to receive the center sill and swing about a horizontal axis extending crosswise of the car and located at approximately the level of the top of the car center sill and adjacent its striker. The bail member has a striker section that underlies the center sill and is equipped with a paddle striker that is arced to accommodate coupler side swing.

Abstract: A support arrangement for brake rods of railroad car brake rigging comprising a U-shaped support member suspended from the underside of the car, a slotted sleeve snap fitted on the brake rod and located to rest on the bight portion of the support member, with the slot facing upwardly, and a retainer member comprising a shank portion received in said slot and having its end portions extending beyond the ends of the sleeve and enlarged to embrace the upwardly facing side of the brake rod on either side of the sleeve slot, with the retainer member end portions being bonded to the brake rod. The sleeve is formed from an ultra high molecular weight polymer material that is of dry self-lubricating nature and resists adherence thereto of foreign materials and serves as a sound deadener and energy absorber. Such material is also characterized by its polishing action on the brake rod support surface it rides on to reform same to define a mirror finish that substantially inhibits further wear on the support during use.