Abstract: A power assist remotely controlled servo controller for proportionally controlling the operation of a directional control valve, the controller including a servo-controlled force amplifying piston assembly to operate the directional control valve and a pilot pressure balanced piston connected to the servo-controlled piston assembly to control the directional control valve. The balanced pilot pressure forces acting on the pressure balanced piston being controlled by either a hydraulic or electric controller from a remote location.

Abstract: A shredding apparatus including a housing or hopper and a shredding assembly positioned within the housing or hopper. The shredding assembly including a cutter bar assembly and a rotary blade assembly. Each of the assemblies including a number of identical cutter blades which are interchangeable with each other and are individually reversible. The cutter bar assembly also including a cutter bar positioned in abutting engagement with one end of each of the cutter blades mounted on the cutter bar assembly. The cutter bar including cutting edges on each side so it can be reversed with respect to the cutter blades. The cutter blades on the rotary cutter bar assembly are arranged to shear waste material at a downwardly and outwardly inclined angle so that the cutter blade acts to draw or pull waste material into the shredder assembly. The hopper or housing being provided with an easy access door on the front wall which can be pivoted outwardly from the hopper.

Abstract: A power transformer having an operating temperature in excess of 200.degree. C. and including a casing or tank, an electrical core and coil assembly having an asbestos based barrier material and being supported in said casing, and a low cost saturated hydrocarbon insulating fluid substantially filling the casing and having a vapor pressure at 200.degree. C. less than 10 millimeters of mercury and a flash point in excess of 230.degree. C.

Abstract: A battery refill indicator including a cap having a screw type base and an enlarged cover including a central opening and a float-type liquid level indicator supported by said cap and including a stem extending outwardly through said central opening in said cap and a float connected to the stem in a position to be suspended within the electrolyte in the battery cell. The stem is limited in its upward travel to a height less than the height of the battery cables and the float is adapted to be adjusted in length to accomodate different size batteries. A guide disc is provided in the cap which limits the upward travel of the indicator and also acts as a splash guard.

Abstract: A down spout adaptor assembly includes a down spout adaptor and a storm sewer entry adaptor, the down spout including a tapered asymmetric tube having an arcuate bead projecting outwardly around the lower end thereof, the storm sewer entry adaptor including a cylindrical structure having an arcuate bead around the upper portion thereof, the arcuate bead on the down spout adaptor being insertable into the arcuate bead on the entry adaptor.

Abstract: An adjustable transformer core and the method of manufacturing an adjustable transformer core, the transformer including a core and coils, the core being formed from a plurality of lamination sets, each lamination set including a number of legs and a pair of yoke members, the lamination sets being stacked in face-to-face relation so that the legs can be moved relative to each other. The coils may be wound directly on the legs and are moved toward each other to obtain predetermined characteristics. The coils are enclosed within a pair of core clamps to retain the relative position of the coils. Such adjustment can be employed to obtain different impedance or insulation levels. It is also within the contemplation of this invention to use the core as a common core for a variety of transformer designs.

Abstract: An oil immersible current limiting full range fuse including a tubular housing, end caps hermetically sealed to each end of the housing and supporting a full range fuse assembly within said housing, the housing being filled with a granular arc extinguishing filler, the hermetic seal provided between the housing and the end caps is formed by a resilient gasket mounted at each end of the housing and epoxy adhesive provided in the end caps, the adhesive being displaced by the gasket on insertion into the space between the end cap and the outer wall of the housing.A method for testing the hermetic seals for leaks which includes the steps of injecting sulfur hexafluoride into the housing, sealing the housing, confining the fuse in a closed space for a predetermined period of time and testing the atmosphere of the confined space to determine the presence of sulfur hexafluoride.

Abstract: A reinforcing rod splice for connecting reinforcing rods in end to end relation including a pair of hollow steel tubes and a coupling or sleeve, the tubes being mounted on the ends of the reinforcing rods. The tubes being deformed on the inner surface to conform to the deformations on the rods and deformed on the outer surface to provide a connection for the coupling or sleeve. The coupling or sleeve having an inner surface conforming to the deformations on the outer surfaces of the tubes.

Abstract: A hydraulic motor defined by a relatively compact structural design and capable of delivering high torque at low speeds. A drive shaft is mounted within a casing and disposed in surrounded relation to a cylinder housing which includes a predetermined number of equally spaced cylinders extending radially outwardly from the longitudinal axis of the shaft but being attached thereto. A piston is mounted for free floating movement within each of the cylinders and includes a cam rider attached thereto for disposable driving engagement with a cam surface. The cam surface is formed from a plurality of angularly oriented surface portions on a plurality of cam rings which are removably attached to the casing for replacement or substitution. An annular valve ring is disposed in surrounding relation to the shaft and in surrounded disposition relative to both the cylinder housing and a portion of the casing.

Abstract: A high voltage bushing for an electrical device such as a transformer, the bushing including a fixed cylindrical conductor and a gas actuated bore contact mounted for reciprocal movement in the conductor and a fixed current interchange device in the form of an annular spring mounted in the conductor for maintaining electrical communication between the bore contact and the conductor.

Abstract: A pressure compensating valve spool assembly for a hydraulic flow control valve the spool assembly being slidably positioned in the central bore of a valve housing for movement from a neutral position wherein fluid will flow through the valve assembly to reservoir to operative positions in either direction to provide fluid communication between fluid inlet passages to one of a pair of cylinder passages in the valve housing, the other of said cylinder passages being connected to one of the pair of reservoir passages. The valve spool assembly includes a symmetrical valve spool having valve members at each end which are responsive to variations in the pressure relation between inlet pressure and cylinder pressure to control the fluid flow rate to the cylinder passage. Any excess flow is bypassed to reservoir at minimum pressure loss.

Abstract: A high voltage bushing having a bore contact mounted for axial movement within the bushing housing, the bore contact being biased for movement into engagement with a rod contact and a magnetically responsive trip mechanism releasably engaging the bore contact and being responsive to a magnetic field produced under fault current conditions to release the bore contact for movement into engagement with the rod contact.

Abstract: A floating buffing wheel assembly including a conveyor for rotating a workpiece and simultaneously axially moving the workpiece past a buffing wheel which is supported on one end of a support arm and counterbalanced by a drive motor on the other end of the support arm, the force of the surface of the buffing wheel acting on the surface of the workpiece being reduced to a minimum and further including a force adjustment assembly for controlling the force of the surface of the buffing wheel acting on the surface of the workpiece.

Abstract: A stator press including a coil forming device and a coil former, the coil forming device having a plurality of blades arranged to be inserted into the slots of a prewound stator and moved radially outwardly, each blade being independently moved by a separate hydraulic piston and cylinder assembly, the hydraulic piston and cylinder assemblies being connected to a common source of hydraulic fluid for simultaneous movement, the radial movement of the blades seating the coils in the slots of the stator to make room for more coils. The coil forming device being supported on a press which includes a coil former to bend the loops of the coils outwardly away from the opening in the stator.

Abstract: An automatic web winder for winding a continuous web into rolls of predetermined length, the winder including a feed assembly, cutting assembly and measuring assembly positioned to feed the web into a mandrel assembly, the mandrel assembly including a mandrel having a feed-through slot for receiving the lead end of the web, an apron assembly for directing the lead end of the web into the slot and a resolver for indicating the angular position of the slot at the end of each cycle, the signal of the resolver being sensed and used to orient the mandrel to a position where the slot is aligned to receive the lead end of the web in the shortest angular motion, and a roll ejector assembly for automatically ejecting the roll from the mandrel at the end of a cycle of operation, the ejector assembly being activated by the movement of a mandrel bearing support assembly which is moved away from one end of the mandrel to release the roll for ejection from the mandrel.

Abstract: An electrical connector system including a cable terminator having a conductive probe and a bushing having a bore contact mounted for reciprocal movement in an electrically conductive tubular member and a fusible member positioned between the bore contact and the conductive member, the fusible member being connected to fuse in response to fault current produced by a prestrike arc to increase the pressure within the tubular member to force the bore contact into electrical engagement with the probe in the terminator.

Abstract: A high voltage fuse of the current limiting type including a housing of insulating material, a cylindrical support formed by an inorganic asbestos thread or string threaded on end plates which are mounted in a spaced relation on a support rod, the thread forming a cylindrical support for a fusible element which is spirally wrapped about the cylindrical support. An arc quenching material is used to fill the housing and completely surround said fusible element.

Abstract: The unique, relatively nonflammable, environmentally safe, insulating oil comprises a saturated hydrocarbon oil having a molecular weight of about 500 to about 700, and a fire point above 200.degree. C. The electrical equipment comprises an oil-sealed tank, a unique insulating oil filling said tank, and an electrical component such as a conductive coil immersed in said insulating oil. A method of filling the oil-sealed tank of an electrical apparatus with the unique insulating oil also is disclosed.

Abstract: In a high voltage bushing having a hollow tubular bore contact engageable with the probe of a high voltage cable terminator, a nose shield for reducing corona around the probe on close-in of the terminator with the bushing, the nose shield being formed of a conductive cylinder which is embedded within the bushing housing but is electrically isolated from the conductive cylinder in the bushing and is electrically connected to the conductive insert of the terminator on close-in.