Abstract: A track-type vehicle comprises a plurality of articulated track shoes each comprising a pair of downwardly converging sidewalls terminating at a grouser extending the full width thereof. The sidewalls define a V-shaped trough-like configuration and a track link is releasably attached thereto. A pair of parallel lugs are formed on the upper ends of the sidewalls.

Abstract: A one-piece paperboard blank is formed into a can carrier by sequentially folding and gluing the panels and flaps of the blank together while moving it along a linear path. The completed "six-pack" carrier comprises top and bottom panels connected together by a pair of end panels and a pair of first and second partitions secured between the top and bottom panels and disposed intermediate the end panels to define three separate cells. A flap secures the bottom panel to each of the partitions whereas a bridging panel secures the partitions to the top panel.

Abstract: Apparatus for handling a large object, i.e., for example, an annular core on which a tire carcass is to be formed, includes an annular wall positionable about the annular core, and a diaphragm associated with the inner surface of the wall and defining with the wall a chamber into which pressurized fluid may be directed. Such introduction of pressurized fluid expands the diaphragm so that such diaphragm comes into contact with and grips the core. The core may then be moved and or turned over by manipulation of the wall.

Abstract: A powdered metal article having a fused wear resistant coating thereon is described. Specific embodiments of such article are disclosed including a specific powdered metal and a specific coating together with specific structural relationships therebetween. A method of making articles according to the teaching of this invention is described.

Abstract: Means are provided for maintaining a uniform height of deposited weld material in an electrical arc welding apparatus of the kind having a welding head driven by a travel motor along a juncture between two workpieces which are to be joined. A first signal, indicating departure from a desired fill depth, is produced by sensing variation of the welding current from a predetermined normal magnitude. The first signal is applied to summing junction together with a predetermined selectable reference signal of opposite polarity so that the two signals cancel out as long as the desired weld fill height is being maintained. Upon a departure from the desired weld fill height an output signal from the summing junction activates a servomotor which adjusts the speed of the travel motor as necessary to maintain the uniform weld depth.

Abstract: An apparatus for interfacing between a telephone instrument and a wireless communication system is disclosed. Subsystems of the apparatus include: telephone answering; telephone handset acoustic coupling (called "audio transducer"); transceiver acoustic coupling (called "audio mixing"), and a voice-loop circuit which isolates incoming and outgoing communication signals.Features of the invention include the use of the second (transceiver) acoustic coupling subsystem which allows, among other functions, any microphone (supplied with the transceiver) to be acoustic impedance-matched to the apparatus.

Abstract: A clutch for coupling an engine to a transmission gearbox engages and disengages automatically in response to engine speed variation. Springs hold the clutch pressure plate retracted from the clutch discs at idling speeds. As engine speed increases, centrifugally generated fluid pressure in the clutch lubricant overcomes the spring force and applies a modulated engagement pressure to the discs. An internal valve continuously supplies an oil flow to lubricate and cool the clutch components and to charge the centrifugal pressure-generating means. Retraction of the pressure plate shifts the valve to reduce the oil flow while the clutch is disengaged. This reduces viscous drag within the clutch and thereby assures a more controlled disengagement. Retainer means stores some of the reduced oil flow to assure that ample fluid is available to the centrifugal pressure-generating mechanism when engagement commences.

Abstract: A rotatable drum for reeling in and releasing a cable has drive means which includes a normally disengaged drive input clutch, a normally engaged brake and a normally engaged disconnect clutch which may be used to uncouple the drum from the drive system so that it may be turned manually to withdraw cable. The input clutch may be selectively engaged and the brake and disconnect clutch may each be selectively disengaged by fluid pressure from a control valve connected to a source of fluid pressure. The valve has a Hold or Brake-On position at which each of the clutches and the brake are unpressurized, a Reel-In position at which the input clutch and the brake are pressurized, a Brake-Off position at which only the brake is pressurized and further has a Free-Spool position at which the disconnect clutch is pressurized to free the drum from the resistance or drag of the drive system. Centering springs resist movement of the control valve away from the Brake-On position.

Abstract: A limited slip differential comprises a pair of face gears operatively connected together for relative rotation by a plurality of pinions each rotatably mounted on a carrier. Each pinion is secured to a shaft having each of its ends rotatably mounted on the carrier by a spherical bearing means for providing a crowned bearing surface area contact upon imposition of loads thereon during differential operation.

Abstract: A mechanism for varying the position of a plurality of nozzle vanes in a gas turbine engine. The mechanism includes a single double-acting hydraulic actuating jack disposed between two bell cranks for simultaneously applying force to a ring gear at two diametrically opposed connection points. The single actuating jack applies equal and opposite forces to the diametrically opposed connection points on the ring gear and reduces distortion producing stresses therein. The ring gear simultaneously engages a plurality of individual gear segments rotatable with each individual nozzle vane in the engine. Movement of the single actuator jack causes balanced rotation of the ring gear and simultaneous rotation of the nozzle vanes.

Abstract: The invention is concerned with an improvement in a carriage-fork assembly. The assembly includes a carriage attachable to a lift truck, the carriage including a plurality of notches along an upper edge thereof. The assembly also includes a plurality of forks, the forks each including a first arm extending generally perpendicularly forwardly from the carriage, a second arm extending upwardly from an end of the first arm adjacent and parallel to the carriage to adjacent the upper edge thereof and a member extending from the first arm over the upper edge and downwardly behind the carriage, the member including a guide sleeve extending upwardly over the upper edge and a bore coaxial with the guide sleeve and extending through the member. Also part of the assembly is a lock rod slidably fitting within the guide sleeve and the bore. A spring is provided for biasing the lock rod downwardly to impel a lower end thereof into the notches.

Abstract: A double acting fluid pressure operated linear motor has an extruded cylinder member with a head endwall and mounting tang formed integrally thereon and has an annular step formed in the interior chamber at the rod end. A piston within the cylinder member is connected to a rod which extends through an end cap fitted against the annular step, the ends of the cylinder member being deformed inwardly to retain the end cap, rod and piston in place. This construction enables such devices to be manufactured extremely economically so that it is practical to discard and replace the actuator, if necessary, rather than performing repairs.

Abstract: The invention is concerned with an improvement in a motor-pump assembly for operating a hydraulic implement, said assembly including a hydraulic pump for controlling flow of a hydraulic fluid to said hydraulic implement and an electric motor for driving said pump. The improvement comprises means for coaxially aligning a driving shaft of the motor with the driven shaft of the pump, means for directly drivingly engaging said driving shaft with said driven shaft and means for fixing said pump to said motor. The invention is particularly concerned with the case wherein said hydraulic implement comprises a hydraulic lift cylinder for adjusting the height of a fork carrying carriage of a lift truck, controlling the tilt of the lift truck mast and controlling power steering functions.

Abstract: A hydraulic system for an electric-powered vehicle, such as a lift truck or the like, supplies pressurized fluid for a hydraulic steering system for the vehicle and for hydraulic motors for manipulating the implements of the vehicle, and includes a priority system for directing all fluid flow from the pump to the steering system circuit until a predetermined minimum pressure is achieved therein, after which fluid is made available to the implement circuit. These are provided in the system for automatically cutting off the electric motor for powering the pump of the system when no demand is made on the hydraulic system.

Abstract: The invention is concerned with a transported tractor scraper of the type having a scraper bowl connected to a tractor. The transported tractor scraper comprises a laterally extending draft tube disposed longitudinally between said tractor and said scraper bowl. A pair of spacers are mounted interiorly on a respective sidewall of the scraper bowl. A pair of draft arms are detachably mounted at a first end thereof interiorly on one of the spacers a spaced distance away from a respective sidewall. A generally flat transport bracket is provided detachably interconnected between a second end of each of the draft arms and the draft tube. A method for transporting a tractor scraper of the type having a draft tube and a pair of draft arms interconnecting a scraper bowl to a tractor is disclosed.

Abstract: Disclosed herein is apparatus for rotating the bushings of an assembled and in-place track of a tractor to present new bushing wear areas to the sprockets which engage these bushings. The apparatus includes a clamp member which is capable of applying rotative force to the bushing to be rotated and means for providing such necessary force.

Abstract: The invention relates to a method and an apparatus for straightening the pins of semi-conductor devices such as transistors and the like. The apparatus includes means for holding the head of a semi-conductor device, means for preventing the pins thereof from separating from one another beyond a cylindrical volume defined by the outer diameter of the ring formed by the pins where they join the head and a plurality of pistons in one to one relation with the plurality of pins generally perpendicular to the pins, each piston aiming towards a central axis defined by the pins. Means are provided for inserting the pistons one between each of adjacent of the pins and towards the axis. A round plunger coaxial with said axis is provided, said round plunger having a diameter generally equal to the inner diameter defined by the pins. Means are provided for advancing the plunger axially towards the head between the pins.

Abstract: A survival kit is disclosed which is based on a hollow tubular member which serves both as the main body of a collapsible cross-bow and as a container for the component parts of the cross-bow and other survival equipment. The preferred embodiment of the elements of the collapsible cross-bow are described and a preferred trigger mechanism for the cross-bow is disclosed.

Abstract: A fluidic device senses acceleration of a vehicle or the like and may control a fluid motor or other mechanism which is to be actuated in response to acceleration. A nozzle directs a jet of fluid across an open gap in a direction transverse to the direction along which acceleration is to be sensed. Two receiver ports are positioned to receive and divide the fluid jet in the absence of flow deflection. Upon acceleration of the device, inertial effects cause the jet flow to be slightly deflected thereby changing the amount of flow received at one receiver port relative to the other to produce a fluidic signal. The signal may be amplified and caused to actuate a fluid motor. Compensating means are provided to eliminate signal error which might otherwise arise from tilting of the device or from changes in jet fluid viscosity.

Abstract: A container-filling machine having a cut-off valve positioned above the container to be filled and a retractable filler spout movable down through said valve to the bottom of the container.