Abstract: Disclosed is a core drill assembly and method of using the same to drill a countersunk hole through a concrete slab, wall or the like masonary member. The assembly utilizes concentric inner and outer core drills, the longer smaller one of which is provided with flushing fluid outlets rearwardly of the front end of the outer or countersink drill and provided with closure means for confining fluid flow to the inner drill when that drill is in use, and for diverting the flow to the outer drill while performing the countersink operation. The two drills have separate coupling facilities thereby permitting the substitution of drills of any selected relative sizes.

Abstract: The invention comprises two embodiments of a hydraulically powered rotor and screw elevator equipped with a fail-safe control system. In each embodiment a dual lead steep-pitched screw is embraced by a rotor supporting the cab. In one embodiment the rotor is driven and in the other the screw is driven. In each embodiment the driven component auto-rotates during downward cab travel and is hydraulically driven during upward cab travel by a motor-pump unit. This unit functions as a motor during upward cab travel and as a pump during downward cab travel to provide pressurized fluid to various system components including the hydraulic speed control components. Pressurized fluid is supplied in varying volumes by a plurality of pumps connected in parallel. Both the rotor and the screw are equipped with fail-safe brakes.

Abstract: Provided by this invention is an improved apparatus for controlling the rate of flow of fluent material by aspiration into a stream of pressurized gas by regulating the gas pressure downstream from the point of admission of the fluent material thereinto independently of the gas pressure at its source. One regulator regulates the gas pressure and velocity prevailing in a gas and fluent material mixing chamber downstream from a fluent material aspirator and the other regulator regulates the gas pressure closely adjacent the downstream end of the fluent material aspirator. Each regulator can be adjusted to vary the flow of fluent material into the gas stream without need for varying gas flow conditions upstream from the fluent material aspirator.

Abstract: The invention is directed to overprinting a poly(vinyl chloride) resin substrate whose surface, or portion thereof, is colored by solvent soluble dye or by way of a mass solvent soluble dye, with a coloring agent made up of a liquid halogenated hydrocarbon solvent having 1-4 carbon atoms, pigment dispersed in said halohydrocarbon solvent, and a film former, dissolved in said halohydrocarbon solvent, consisting essentially of (a) acrylic resin or (b) a combination of acrylic resin and chlorinated polyolefin, at least 50% by weight of acrylic resin; and heat treating said overprinted substrate to adhere said film former and associated pigment.

Abstract: A butterfly regulated carburetion system having its outlet connected to the intake manifold by a device restricting fuel and air flow very substantially from the rated flow capacity of an OEM carburetor in a manner promoting improved vaporization of the fuel and thorough mixture thereof with air before exit into the inlet of an OEM inlet manifold thereby to obtain more uniform proportions of fuel and air to each cylinder. These objectives are achieved by provision of a riser plate having a converging fuel vaporizing and mixing passage at least as long as the diameter of the OEM carburetor outlet. When the OEM engine is applied to a typical conventional vehicle, the device provides improved acceleration, better idling, greater power and utilizes substantially less fuel while retaining optimum drivability factor of 92 miles per hour.

Abstract: An improved self contained elevating table suitable for loading dock and the like load lifting operations. The platform is supported by at least one pair of scissor legs the opening of which is accelerated and amplified by a cylinder-operated toggle lever subassembly the opposite ends of which are pivotally connected between the outer end portion of one leg and a bracket mounted for movement with the other leg at a point spaced radially from the common midlength pivot access of the pair of legs. The roller-equipped pivot interconnecting the toggle lever and cylinder is offset from a line through the remotely positioned pivot axis of the cylinder and toggle subassembly, and this roller cooperates with a ramp or other constraint on the apparatus to accelerate and amplify initial opening of the scissor legs from the collapsed horizontal positions thereof.

Abstract: A high-performance low-torque anti-friction bearing assembly having numerous applications including dynamic support of a stabilized platform under severe operating conditions. The assembly consists of two rings provided with two pairs of raceways having respective rows of balls therebetween preferably under static preload. The balls and their raceways have a conformity factor of approximately 0.56 to 0.60 and the two rows of balls are in contact with a respective pair of raceways at converging similar contact angles of about 35 degrees. The ratio of the ball path diameter and the square root of the cross-sectional area of the bearing is at least 15. A bearing incorporating these features performs at high efficiency with minimal torque losses under both simultaneous and non-simultaneous axial, radial and moment load conditions and associated distortions.

Abstract: Provided by this invention is an instruction and training kit of modular components readily interconnectible in a variety of ways without tools or fasteners for use in conducting feasibility studies of different modes of erecting power line supports while a damaged permanent tower is being serviced. The kit consists of a multiplicity of miniature components made roughly to scale to simulate full scale components designed for assembly and temporary installation to support high potential conductors. All components, including the baseboard, are compactly storable when not in use.

Abstract: Disclosed is a device for closing a snaplock type seam having a pair of internestable interlocking V-shaped portions. The one piece closure device is assembled astride the V-shaped portions of the two seam members and functions to force these portions laterally into interlocked assembly as the device is advanced along the seam.

Abstract: Disclosed is a powder container for a flame spraying torch having an outlet normally closed by an elastomeric plug provided with inner and outer closely spaced diaphragms. The outer diaphragm has an aperture sized for a wiping fit with a powder dispensing tube as the latter approaches and opens a normally closed slit crosswise of the inner diaphragm thereby safeguarding against the loss of powder during both insertion and withdrawal of a powder dispensing tube through the two diaphragms. The powder dispensing tube has an inlet end upstanding axially within a well sized for telescopic assembly about the dispensing end of the powder container.

Abstract: Disclosed is a dual headed razor system having a handle supporting a pair of separately detachable razor heads respectively useful in shaving forwardly and rearwardly in to and fro strokes. The identical razor heads are usable interchangeably and are telescopically supported crosswise of the handle.

Abstract: Disclosed is a system and method for recovering energy from elevator apparatus and utilizing the recovered energy for useful purposes. This is accomplished by selectively coupling a hydraulic pump to the elevator drive when surplus energy is available thereby to pump and store pressurized fluid in accumulator devices. Such fluid, when above a predetermined pressure, is utilized to deactivate electrically driven units and drive the same by hydraulic motors supplied with fluid from the accumulator devices. Additional energy is recovered from heat present in the hydraulic fluid downstream from the hydraulic pump and utilized beneficially.

Abstract: A solar heater for swimming pools is provided having one or more heating panels installable on a roof or the like and arranged to discharge into a pool equipped with an apron without need for disturbing or obstructing the apron. This is accomplished by the provision of an elevated bistable dumper adjacent the perimeter of the apron having a dispensing spout normally inclined upwardly but pivoting at intervals to discharge into the pool across the apron without obstructing it. Water to be heated is diverted from the pool filtering system to the solar heater via a pressure regulator and a solar responsive flow control.

Abstract: A simple inexpensive, very effective high to ultra high frequency radio direction finder is disclosed utilizing two parallel antenna units with switching means for alternately connecting the antenna units to a conventional unmodified FM or NBFM receiver at an audio frequency rate. If the centroids of the antenna units are not on a line normal to the path of the monitored input signal, the amplitude of the audible tone output signal resulting from the difference in phase of the alternately received input signals at the time of switching will vary with the angle of deviation of the antennae from this normal position. The slight alternations of phase are demodulated as slight frequency changes and produce a tone in the FM receiver output having the audio frequency of the antenna switching device.

Abstract: Disclosed is a fuel injection system particularly useful on supercharged boat and vehicle drag racing engines which functions to provide a positively controlled uniform fuel/air ratio proportional to engine speed from idle through maximum engine horsepower operation. The system utilizes an engine-driven positive displacement pump supplying pressurized fuel to calibrated injection nozzles via a unique driver-controlled fuel metering valve. This valve has idle and full throttle positions for vehicle racing, but idle, partial and full throttle positions for boat racing. In each application, excess fuel entering a rotary metering valve is returned to the source via continuously open valveless passages and, upon initiation of acceleration, total fuel requirements are supplied to the engine instantly and without delay in a precisely controlled fuel/air ratio.

Abstract: A self-locking grip for bags and sheet material is provided having a multiplicity of grit-like points positioned to be brought into firm gripping relation with sheeting or the like draped under tension over these points. Typically, the sheeting is draped over a grit-covered semi-circular surface merging with the grit-covered sidewall of a slot, and held in contact therewith by spongy resilient material fixed to the other side of the slot. This resilient material is readily compressed to receive or to release the edge of the sheet material.

Abstract: A method of protecting a plurality of ribbon cables from electrostatic and radio frequency interference utilizing inner and outer subassemblies each having flexible conductive shields secured together in electrical contact with one another and cooperating to provide a gapless shield embracing the cables. The inner subassembly is pleated longitudinally to form a separate shielded cell for each cable with the open edge of each cell embraced by the conductive shielding of the outer subassembly. The outer subassembly being held releasably closed as by a separable longitudinal seam. Conductive braiding and foil is held assembled to and in contact with the shielding layer of the inner subassembly and is maintained in contact with the shielding layer of the outer subassembly when the separable seam of the jacketing is closed.

Abstract: Disclosed is a method, a system and an improved butterfly valve usable therein for recovering energy from a continuous supply of hot pressurized particulate-laden flue gas. This gas is conducted to the atmosphere via a selected one of a plurality of ducts equipped with separate purgable butterfly cut-off valves each located upstream both from the point of gas disposal to the atmosphere and from separate energy recovery devices. Each duct has provision downstream from an associated cut-off valve for insertion of a slip blind crosswise of that duct after closure of the cut-off valve thereby permitting servicing operations on the energy recovery device deactivated by the closed valve or valves. One or more of the recovery devices is usable to supply operating power for components of the system or to other equipment.

Abstract: This invention is directed to inks (coloring solutions) for polyvinyl resin surfaces, particularly PVC wire insulation color coding, where the ink consists essentially of a Color Index Solvent dye dissolved in a liquid halogenated hydrocarbon solvent having 1-2 carbon atoms. A preferred solvent is dichloromethane.