Abstract: A darkroom safelight filter assembly for a TV set comprises a filter screen tinted to exclude damaging light rays for photographic materials, having a bracket thereon mounting a block of sponge rubber supported on the top wall of the TV set. The filter screen depends from the bracket, is spaced from the TV screen and includes a continuous strip of resilient light sealing sponge rubber of rectangular shape for snug sealing registry with the TV casing surrounding the TV screen.

Abstract: A vibratory plow blade having a tapered leading edge, a trailing edge, and a tapered bottom edge wherein the plow blade is configured such that its longitudinal axis regresses or is arcuately angled away from the towing vehicle. The tapered leading edge of the plow blade includes an upper straight cutting section and a plurality of forward angled serrations along its length which provide for downward and upward cutting and fracturing of the soil with each successive stroke of the blade during vibratory action. The guide chute for the cable is mounted to the trailing edge at a substantial bend radius for reducing the flexing required of the cable and reducing the weight of the guide chute. The construction permits close proximity between the plow blade and guide chute for providing increased chute protection and a reduction in the chute frictional drag thereby leaving more vibrational energy for soil displacement.

Abstract: A transporting device for marginal punched single-layered or multiple-layered webs of material, in particular for record carriers in a printer, is provided.

Abstract: A shut off control system for the fluid activated clutches of a transmission is provided. The inventive control valve automatically shuts off hydraulic flow to the clutches whenever the engine of the vehicle is turned off. When the vehicle is restarted the clutch pedal must be depressed and released before fluid can again activate the clutches. With the inventive control system, the vehicle can be started in any gear but the vehicle will not move until the clutch pedal is depressed and released by the vehicle operator.

Abstract: The present invention relates to an automatic verification probe for verifying the proper installation of a fastener to a workpiece. In the preferred embodiment, a plurality of probes are used in a single press to test each fastener for proper installation. The probe has a fluid-operated extensible member mounted to the ram or base of the press. By extension of the member, each fastener is tested individually to verify proper location, absence of material in the thread cylinder and minimum retention capability.

Abstract: In an industrial filter apparatus having a tank with an inlet receiving contaminated effluent from an industrial washing device and a discharge outlet connected to the washing device for recirculating washing fluids, a continuous filter spanning the tank interposed between the inlet and outlet, a continuous drive connected to the filter, a motor connected to the drive and a pump delivering filtered fluids from the outlet to the washing device, an automatic filter media indexer comprises a sensing arm rotatably journaled upon the tank having a contactor engagable with the filter on its downstream side connected by a link and a pull rod to a normally open switch connected to a power source and to the motor. A switch actuator on the pull rod is in registry with the switch, and an adjustable spring normally biases the pull rod.

Abstract: A linear potentiometer with a sandwich type construction. A pair of conductive strips are carried on a pair of non-conductive flexible plastic substrates which are affixed to a spacer to form a sealed unit. Each substrate includes a pair of tabs which cooperate with the tabs on the other substrate to define a pair of terminal receiving slots for connecting the potentiometer in an electrical circuit.

Abstract: A transfer boom assembly for panel type workpieces adapted for suspension from a reciprocal shuttle carriage comprises an elongated boom arm of circular cross section having a plurality of continuous parallel passages formed within and along the length thereof. An air fitting is selectively connected to one end of at least one passage and connected by a conduit to an air control valve connected to a source of pressurized air. A plurality of variably spaced air fittings are connected to the arm along its length respectively in communication with at least one pressurized passage. A plurality of variably spaced vacuum boom mounts are adjustably mounted upon the boom arm adjacent the outlet fittings respectively. Each mount includes a clamp mounted on and secured to the boom arm. A spreader bar at one end is connected to each clamp and adjustably mounts along its length a venturi vacuum cup assembly for supporting registry with a workpiece.

Abstract: A resistance heating element of the ribbon type for use in a high temperature electric furnace. The element has the same curved cross-sectional configuration throughout its entire length to give it strength and stiffness and permits the element to be bent into various patterns without any overlapping portions at the bends. The curved cross-section permits the element to be supported at the bends without the element sagging reducing the amount of heat absorption by the supports and allowing greater exposure of the element.

Abstract: The present invention relates to a truck mounted backhoe supported by a frame that pivots between a use position and a transport position in an uninterrupted movement. The support frame is interconnected to the truck by a linkage assembly having two links pivotally connected at adjacent ends with the opposite ends connected to the frame and the truck respectively. A hydraulic cylinder is connected at the adjacent connecting point to push and pull the frame between the use and transport positions. Further, a control station is provided which is pivotally interconnected with the support frame and is moved with respect to the frame as the frame moves between the use and transport position to prevent interference with the backhoe. A bracing frame is provided to retain the frame in a substantially vertical position when in use.

Abstract: The control system is provided for the High-Low clutches of a High-Low powershift transmission. The control system functions in a manner to prevent simultaneous engagement of the separate clutches. The control system also provides a phased disengagement of the outgoing clutch to provide for smoother shifting when changing gear ratios.

Abstract: A test kit for preparing a chemical test pad used in testing for the presence of occult blood in a specimen. The test kit is a foil package enclosing an absorbant pad bearing a peroxygen agent and a solution of guaiac in alcohol in a separate packet or compartment from the absorbant pad. The separate packet or compartment being rupturable by applying hand pressure to the outside of the foil package to mix the peroxygen agent powder on the test pad and the guaiac solution prior to removing the absorbant pad from the foil package. The method relates to performing a medical test by activating a test pad bearing one reagent by applying another reagent thereto while remaining wholly within a protective foil package. According to the method a test pad containing the peroxygen agent is wetted with a solution of guaiac in alcohol prior to removal from the protective foil package and exposure to a specimen of fecal material and water in a test for occult blood.

Abstract: Engine monitor/control microprocessor primarily effective to automatically adjust the engine power setting in a transmission power train in which the transmission drive reduction is variable in ratio, by step change or continuously so, such as for use in farm tractors. The microprocessor adjusts the position of the setting so that engine power set at all levels is produced at the right brake specific fuel consumption for substantially minimum pounds of fuel per horsepower hour, or within a band width thereof if not all that sensitive. Preferably, the microprocessor has a higher priority primary function of also automatically adjusting the transmission drive reduction ratio, for the same purpose but with high sensitivity.

Abstract: A garment carrier for use in an automobile or similar vehicle having a first or closed position wherein the garment carrier is concealed by the interior molding of the vehicle and a second or open position wherein the garment carrier can support a garment thereon. The garment carrier has two elongated members each having adjacent end portions and recessed regions. The adjacent end of one elongated member is receivable by the recessed member on the other elongated member with both the adjacent ends and the recessed regions being uniquely constructed to retain the elongated member in the open position.

Abstract: The method of making a replacement flooring for a dump truck having a body upon a frame, the body including front and side walls and a damaged, punctured flooring plate, comprising the steps of superimposing a metal replacement floor over the damaged flooring plate, peripherally welding it thereto defining a sealed chamber between the plates. Further steps include drilling a vent and fill opening through the replacement plate, thereafter injecting under pressure a two-stage thermosetting copolymer filling the chamber and thereafter curing the copolymer providing a hardened spacer filler between the plates. Replacement flooring for the damaged flooring plate comprises a replacement floor plate superimposed over the flooring plate and peripherally welded and sealed thereto defining a sealed chamber between the plates. A hardened cured filler spacer of a thermosetting copolymer material is snugly interposed between the plates.

Abstract: A boat leveling systems with a pair of trim tabs pivotal between a horizontal position and a downwardly inclined position. Each trim tab is actuatably between the horizontal and inclined positions by a separate fluid motor which includes a cylinder, a piston slidably disposed in the cylinder and a rod connected to the piston. The position of each trim tab is indicated by apparatus which includes a linear potentiometer attached to the rod of the associated fluid motor, the potentiometer having a flexible plastic envelope and a pair of normally spaced-apart conductive strips sealed in the envelope, a ball and spring carried by the cylinder for contacting the envelope and forcing the strips into electrical contact with each other, and a resistance measuring device connected in circuit with the potentiometer and to provide a readout in degrees of the downward angle from horizontal of the trim tab.

Abstract: Master clutch pressure and lubrication valve which consolidates both such functions or services for a power operated clutch pack, all to insure the necessary conservation of cooling lubrication oil at times when full engagement pressure on the clutch pack can have stabilized it against further clutch slip, but at times otherwise to insure a liberal flow of the cooling oil. By built-in delay of cooling flow change following clutch actuation in the valve, it makes the transition between the two rates of cooling flow by temporarily sustaining liberal circulation of the cooling flow for that initial time after full engagement pressure exerts itself on the clutch pack. Sometimes a clutch will continue slipping, just for that initial time.

Abstract: A machine for repeatedly impacting metal castings in order to clean the castings of debris, such as sand, is formed of a wheel-like frame which is rotatably mounted upon a horizontal axle. The frame is divided into four equally spaced apart compartments which provide two pair of opposed compartments. The radially innermost wall of each compartment is formed of a metal plate arranged parallel to the axle so that the plate of the uppermost compartment is horizontal and forms a floor-like support for the casting which is then located in that compartment. Each plate is loosely supported upon springs and has an exposed end portion that extends transversely outwardly of the frame. An impact hammer is arranged to repeatedly apply blows that are directed radially towards the axle against the exposed end portion of the uppermost plate for vibrating the plate and for transmitting the forces of the blows to the casting for loosening debris clinging thereto.