Abstract: This apparatus is used to improve the heat distribution on the cavity surface in foam molding dies where a smooth finish on the resin filled foam molded plastic product manufactured by an injection molding process is desired. This invention improves the method for heating the mold cavity using a condensing vapor in a molding die by a channel and slit type orifice means in the mold around a portion of the periphery of the part to be molded. Another channel and slit type orifice means around the remaining periphery is included in the die for removing the condensing vapor or condensate from the mold cavity. During the heating process when condensing vapor is introduced into the mold the sprue opening to the extruder is sealed by a valve means to prevent condensate from collecting therein.

Abstract: An apparatus for abrading and finishing the inner surface of an unusual shape, for example the inner ring of a gerotor device, with a tool holder adapted to carry honing stones for movement along the part surface and driven by a mating part engaging a stationary ring mounted inside the assembly and affixed to the drive spindle housing. The stationary ring has an identical shape to the workpiece being machined to guide and synchronize the tool holder in an eccentric path during the abrading operation and the workpiece and stationary ring are orientated to maintain the synchronous relationship. The apparatus while being rotated is also reciprocated transversely to the workpiece surface causing the stones to move in a helical path.

Abstract: A portable space heater having a deep fuel tank in conjunction with a fuel pump for raising the fuel to a predetermined height to feed an aspirating type nozzle incorporated in the fuel system and an adjusting valve means to control the flow of fuel to the siphon line connected to the nozzle. The fuel pump feeds the fuel from the tank to a predetermined level at which the aspirating nozzle will operate efficiently. The fuel line system also has a return line to the tank which allows any excess fuel in the lines to be appropriately returned to the tank.

Abstract: An apparatus for accurately controlling the rotary position of a high speed position control servo system having a servo motor which is fed by a conventional servo amplifier and drive amplifier means with a tachometer feedback to the drive amplifier. Incorporated in the system is a high frequency quadrature phasing network which receives timing signals from the servo amplifier and conditions these signals into a balanced sine cosine function which excites a rotary position transducer that is directly coupled to the motor. The high frequency sine cosine signal produces a reference feedback signal which is the difference between the actual rotor position of the motor and the sine cosine field of the position transducer stator. The error signal is fed back to the servo amplifier and is conditioned through a transformer, pre-amp and filter means and then fed into the servo amplifier means to tract the servo motor.

Abstract: This invention is an improved injection molding nozzle whereby the shut-off plunger is operated by a fluid and the opening of the nozzle is accomplished by the flow of plasticized material through the nozzle. A control rod internal to the nozzle controls the movement of the plunger shut-off member and is adjustable so that the amount of plasticized resin flowing through the nozzle can be accurately controlled.

Abstract: A hydraulic press having upper and lower hydraulically operated plates whereby the upper plate is movable with a long stroke cylinder and the lower plate is movable wth a short stroke cylinder. The press has a grooved load bearing rod which is attached to the upper moving plate and passes through the upper fixed plate of the press with a series of slots machined in the rod. A split ring and an especially ground shim are located on a bushing in the upper plate and in one of the ground grooves. A locking plate is attached to the lower part of the upper fixed plate and using a hydraulically operated cylinder has locking plates which move into and out of engagement with the grooved rod to accurately locate the position of the upper moving plate when the machine is stroked. This method of adjusting the horizontal position or parallelism of the plates enable very accurate positioning of the mold or dies which are mounted between the plates of the press.

Abstract: A method and apparatus for gaging the cross-sectional bore diameter generated by an abrading type finishing tool in an abrading machine. The tool and plug gage are mechanically mounted to the same spindle with the plug sized to a predetermined diameter and mounted behind the machining element. The plug gage is indexed to enter the bore being machined at predetermined cycles to determine if an undersize condition of the tool exists. Failure of the plug gage to enter the bore would indicate an undersize condition of the tool and upon the gage entering the bore it would indicate a correct tool size. The invention has further apparatus for shutting down the machine in the event an undersize condition is determined.

Abstract: An apparatus and method for removing tie bars from a die casting machine. The apparatus and method involves utilizing gearing attached to the tie bar nut whereby the nut is held captive, but is capable of being rotated by an auxiliary drive unit. Further, by utilizing the existing die casting machine functions, it is possible to remove the tie bar from the machine so that the die can be removed and a new die inserted into the die casting machine. By reversing the process the tie bar can now be reinserted into its operating position in the machine and the locking nut rotated to its proper position and locked up.

Abstract: This invention relates to the hydraulic control field wherein an electronic controller provides the necessary electrical elements for controlling the movement of an actuator shaft from one pre-selected position to another pre-selected position at a pre-selected velocity and provided with an automatic timing control circuit to sustain the movement or a manual operation to selectively move the actuator. The pre-selected positions and velocities are adjustable over the full range of actuator movement and velocity limit of the hydraulics.

Abstract: This invention substantially improves the surface finish on resin filled foamed molded plastic products manufactured by injection molding by pre-heating the skin surface of that part of the mold in contact with the part prior to the injection cycle of the machine and then subsequently chilling the mold via internal tube connections to shorten the time needed in the manufacturing cycle for solidifying the part sufficiently for release from the mold.

Abstract: Apparatus for sensing and measuring the torque output of a rotary device such as a gear reduction box by inserting an especially machined or configured adaptor between the shaft bearing and the bearing mounting housing. This adaptor transducer will have strain gages mounted on it in spaced relationship so that the tangential force from the gears reacting on a shaft will produce a deflection in the adaptor transducer which will be detected by the strain gages. The strain gage signal then will be sensed, amplified and can be recorded on an analog read out type meter or monitored continuously on a pen-type recorder or other conventional instruments. The strain gages can be calibrated so the output of the recorder will convert the signal into a direct reading of the torque output transmitted through the gear reduction box.

Abstract: A method for the manufacture by foam molding of plastic products by first injecting into a mold non-cellular plastic resin and then injecting a foamed plastic resin of the same basic composition as the non-cellular plastic resin. The process and apparatus consisting of a single extruder and single injection chamber wherein the non-cellular and foamed plastic resin are extruded from the same extruder and stored in an accumulator until shot into the mold by a hydraulic cylinder. Controls are provided for the correct amount of each type of resin to be extruded and stored and the process can be adapted so that the sprue portion of the final product will be solid resin. By a simple addition, coloring of the resin may be accomplished so that the basic resin, method or apparatus will not require changes.

Abstract: Apparatus for sensing and measuring the torque output of a rotary device such as a gear reduction box by inserting an especially machined or configured ring between the shaft bearing and the bearing mounting housing. This ring will have strain gages mounted on it in spaced locations so that axial movement of the shaft will produce a deflection in the ring which will be detected by the strain gages. The strain gage signal then will be sensed, amplified and can be recorded on an analog read out type meter or monitored continuously on a pen-type recorder or other conventional instruments. The strain gage device can be calibrated so the output of the record will convert the signal so that a direct reading of the torque output of the shaft can be made.

Abstract: A material handling system incorporating an air operated scissors lift mounted on an air bearing pallet to move heavy or cumbersome loads. On top of the upper platform is a second air bearing pallet channelled so it can move in a guided path for use with a transition plate for transferring, loading and unloading heavy loads onto or from a truck bed or from a shelf or rack especially designed to support and handle heavy loads.

Abstract: An apparatus for the manufacture by foam molding of plastic products by first injecting into a mold solid plastic resin and then injecting a foamed plastic resin of the same basic composition as the solid plastic resin. The process and apparatus consisting of a single extruder and single injection chamber wherein the solid and foamed plastic resin are extruded and stored until shot into the mold by hydraulic pressure. Controls are provided for the correct amount of each type of resin to be extruded and stored and the process can be adapted so that the sprue portion of the product will be solid resin and by a simple addition, coloring may be added so that the basic resin, method or apparatus will not require changes.

Abstract: A seal assembly utilizing a floating seat principle in a fluid powered rotary actuator to seal the arcuate surfaces and the planar ends of the actuator. The seal incorporates a two piece retainer design with a peripheral O-ring and cap ring combining with a captured O-ring and shoulder bolt which give the additional sealing and floating principle to assure effective sealing of the pressure chambers.

Abstract: This invention embodies an intensifier cylinder assembly within the main hydraulic ram of a plastic molding machine whereby the clamping force holding the mold halves together can be increased during the shot cycle of the machine by at least three times the normal clamp force of the machine. Additionally, the location of the intensifier reduces the number of high pressure hydraulic fittings in the machine improving the safety factor while reducing the overall cost of the intensifier itself since the ram piston now becomes the housing for the intensifier piston.

Abstract: This invention is the method and apparatus for locking an indexable replaceable cutting tool insert into a cutting tool holder using a tilting pin type device consisting of a pivotally recessed pin with a resilient member and set screw which lock the insert into an insert pocket of the tool holder.

Abstract: The nozzle manifold assembly of an injection molding machine is infinitely adjustable horizontally perpendicular to the nozzle axis. The nozzles themselves project through slots in the front clamp plate of the machine which give flexibility to the mold designer in his placement of sprues and runners for filling the mold. Additionally this manifold assembly and its associated injection hardware, such as the shot accumulator, hydraulic pressure accumulator and valving, are mounted on a carriage assembly which is capable of moving horizontally in a direction parallel to the axis of the nozzles thereby allowing the nozzles and associated heater bands to be accessed and maintained without the need for removing the mold from the machine.

Abstract: A honing machine for honing ball bearing races or other arcuate grooved surfaces that extend around the circumference of cylindrical workpieces comprises a workpiece support assembly for rotatably supporting the workpiece in the machine, a spindle drive mechanism for rotating the workpiece, and an oscillation mechanism for holding and oscillating a honing stone in abrading engagement with the arcuate surface of the workpiece as the workpiece is rotated. The oscillation mechanism includes an oscillating tool holder for holding the honing stone and a mounting mechanism for rotatably supporting the oscillating tool holder. The mounting mechanism is tiltable by means of a lift cylinder and toggle linkage to lift the stone out of engagement with the grooved surface of the workpiece for insertion and removal of successive workpieces into and out of the honing machine.