Abstract: A drive mechanism for an automatic transfer machine has a mechanical transfer drive including a motor driven gear box with an output shaft connected to a single, rotatable drive arm with cam follower means thereon selectively engageable with one or the other of a pair of spaced cam slots on a transfer buggy to define a linear geneva index for producing a harmonic motion, two stroke, transfer of the transfer buggy so as to produce improved start-stop-start-stop sequences of movement of pallets in a linear geneva operated transfer system.

Abstract: Servo control circuits particularly suited for electric discharge machining apparatus to provide the input to the servomechanism which actuates the tool feed during machining.These circuits respond to a setting of desired gap emf and an input of actual gap emf to control tool movement so as to equalize these inputs. They respond to abnormally low gap emf during the machining "on" pulse to retract the tool to allow the gap to clear of debris.The gap emf during the "on" period of the pulse cycle is stored in a small capacitor coupled to a high-impedance input to power circuits of the servo control, which capacitor normally retains most of its charge during the "off" time of the cycle. Logic circuits responding to the pulse generator and the gap emf discharge this capacitor when abnormally low gap emf occurs during cycle "on" time.

Abstract: A six-wheel armored vehicle has each wheel driven by an engine mounted between the front wheels and to the side of a driver's station disposed in the beveled shaped nose of the vehicle. Terrain in front and to the sides of the vehicle may be viewed by a driver from within the vehicle by a plurality of periscopes. Alternatively, a hatch opening in a forward sloping surface of the nose immediately behind the periscopes permits the driver to raise his head out of the vehicle in order to view the terrain. A fuel storage tank is formed integral with rear portions of the vehicle's hull and comprises a plurality of interconnected fuel cells defined by double wall construction of the hull body. A fresh air inlet and deflector arrangement in the upper horizontal surface of the hull delivers fresh air forwardly to an engine compartment for cooling the engine, and warm air generated by the engine is reversed in flow direction and exhausted via a conduit through an outlet opening immediately adjacent the fresh air inlet.

Abstract: An in-arm hydropneumatic suspension system includes a road wheel spindle connected to a vehicle hull. A road wheel arm has a spindle housing on one end supported by complementary tapered roller bearings for oscillation on the spindle; the opposite end of the road wheel arm defines an air spring housing for air spring means supporting the sprung mass of the vehicle. Damper components of the suspension unit are located remotely of the air spring at a location in the spindle housing so as to isolate the air spring operation from damper generated heat and wherein damper generated heat is dissipated from crankcase oil in the spindle housing directly to the hull.

Abstract: A control system for electronic discharge machining includes an automatic relay control and a current cutoff control of particular interest. The automatic relay control controls the energy level of machining pulses as a step function of machining cycle period by cutting in or out resistors in a power circuit through the machining gap. Higher frequency pulses are held to a lower current level to avoid power transistor overload. The relay control circuit includes multivibrators, energized at progressively higher values of pulse period by the counters, and an output circuit for each multivibrator which controls one of the relays which vary the gap circuit resistance. The relay control circuit also includes a threshold responsive circuit which senses any change in the several relay controlling output signals and acts to interrupt machining pulses briefly to allow time for relay operation.

Abstract: A machine tool control system adapted to provide automatic depth compensation for a cutting tool which controls the position of the tool in relation to a workpiece to hold the predetermined depth of a sleeve bore surface.

Abstract: A surprisingly corrosion and abuse resistant plastic object vacuum-metallized with a corrosion prone metal, namely indium, on a dielectric substrate consists of minute specular electrically-discrete "islands" of the indium topcoated with a clear resinous layer which encapsulates and insulates the islands, one from another. The indium islands are less than one thousand angstroms thick and have an average diameter of less than three thousand angstroms. This island structure is secured by stopping the growth of the metal as it is deposited between the nucleation stage and the stage of channelization or formation of an electrically conductive film. The island structure permits the dielectric resinous topcoat to penetrate in, about and under the metal islands encapsulating and securely bonding them to the substrate.The vacuum deposited indium gives a bright sheeny appearance which, when properly topcoated, very closely duplicates the appearance of electrodeposited chrome.

Abstract: A control system for elecctronic discharge machine includes an automatic relay control and a current cutoff control of particular interest.The automatic relay control controls the energy level of machining pulses as a step function of machining cycle period by cutting in or out resistors in a power circuit through the machining gap. Higher frequency pulses are held to a lower current level to avoid power transistor overload.The relay control circuit includes multivibrators, energized at progressively higher values of pulse period by the counters, and an output circuit for each multivibrator which controls one of the relays which vary the gap circuit resistance.The relay control circuit also includes a threshold responsive circuit which senses any change in the several relay controlling output signals and acts to interrupt machining pulses briefly to allow time for relay operation.The current cutoff control circuit detects abnormally low voltage across the machining gap and reduces gap discharge energy level.

Abstract: An electro-mechanical control system for controlling all of the movements of one or more slides on a single workhead grinding machine. A programmable controller is interfaced with a digital to analog converter or feed control which in turn controls a drive motor that is directly connected to a screw actuator means that directly controls the movements and positions of a slide. The positioning accuracy of the control system is derived from the accuracy of the electronic control components and the stability of the machine. The control system can control the operative movements of each slide in a compound slide assembly, simultaneously or independently, for a part of a grinding machine cycle. The compound slide assembly may alternatively carry a rotating grinding wheel or a workhead that is reciprocated at high speed for a grinding operation on a workpiece.

Abstract: A tool and method for pressure forming teeth on the periphery of a cylindrical work piece wherein each of the teeth has a predetermined crown formed thereon. The tool includes a body having a leading edge and a trailing edge. The trailing edge of the tool body has an undercut surface thereon supportingly receiving a tooth crowning section having the side edges thereof shaped outwardly of the undercut surface on the tool to shape transversely formed insert teeth to form a predetermined crown on the teeth of the part being formed by the tool.

Abstract: A surprisingly corrosion and abuse resistant plastic object vacuum-metallized with a corrosion prone metal, on a dielectric substrate consists of minute specular electrically-discrete "islands" of the metal topcoated with a clear resinous layer which encapsulates and insulates the islands, one from another. The metal islands are less than one thousand angstroms thick and have an average diameter of less than three thousand angstroms. This island structure is secured by stopping the growth of the metal as it is deposited between the nucleation stage and the stage of channelization or formation of an electrically conductive film. The island structure permits the dielectric resinous topcoat to penetrate in, about and under the metal islands encapsulating and securely bonding them to the substrate.

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: A valve system includes features to control flow of fuel between a pair of fuel tanks during a transfer operation so as to prevent flow of return fuel from a carburetor back to a previously filled tank. The valve system includes a pair of valve bodies each having two mechanically operated sealing elements therein. One of the valve bodies has larger inlet and outlet ports to control the supply of fuel from the source tank of the system to a vehicle carburetor. The other of the valve bodies has smaller ports to control the flow of excess fuel flow to the selected source tank of the pair of tanks during engine operation. Each of the valve bodies includes a push rod operatively connected to a single motor drive yoke element. Each sealing element is spring biased and has an insert directed therethrough constituting a seal carrier slidably supported on the push rod.

Abstract: A mechanical knock-out punch driver has a torque housing that has a recirculating ball screw unit rotatably supported therein. A driver collar is connected to a rotatable handle to direct a rotary input force to a nut portion of the ball screw unit so as to drive the screw portion of the ball unit and a draw stud connected thereto axially and linearly without rotation. A draw punch is pulled by the non-rotating draw stud to cut a slug of material from a sheet material panel to produce a clearance hole for the passage of electrical conduit, tubing, piping or the like.

Abstract: A universal joint comprising a block and pin type mount as component parts of honing tool assembly. Each pin is mounted and locked in place with set screws to the universal joint drive block.

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: A machining center having a magazine for storing toolholders with tools mounted therein. The magazine includes a plurality of laterally open toolholder sockets for receiving one toolholder each with its axis parallel to the tool spindle axis of the machining center. Each toolholder socket on the magazine includes a locking member enabling the toolholder to be locked in its inserted position in the magazine thereby preventing accidental withdrawal of the toolholder during rotatable movement of the magazine. Each toolholder socket on the magazine includes flange members which engage the grooves on each toolholder thereby holding each toolholder in alignment enabling the correct position of each toolholder during transfer from the magazine to the spindle of the machining center.

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 work support or pallet is slidable onto a holding device on bearing surfaces along a rectilinear guide defining parallel angular paths. The holding device has two clamping slides which are urged transversely to the rectilinear guide to bear on a mating surface part of work support to locate it both in the longitudinal direction and transversely thereof. One slide has slanting teeth mating with teeth on the work support in such a manner that the clamping force components locate the work support with respect to both longitudinal and transverse directions and hold the work support against the bearing surfaces.