Abstract: A three or four-terminal electronic control circuit utilizes a thyristor and a transistor connected in their regenerative circuit or, alternatively, three transistors interconnected in a regenerative circuit. The thyristor is connected to operate in a remote base mode as a low gain PNP transistor, together with a bipolar NPN transistor. The thyristor and transistor are connected in a regenerative circuit which results in very high gain, low input current, with low cost and complete control for ON and OFF, and even intermediate range conditions due to direct access to the base of the NPN transistor. A switch may be connected to the base of the NPN transistor to control the current thereinto, and when current flows into this base, then the transistor and thyristor are connected toward regenerative conduction. When the base current is terminated by the switch, then the circuit degenerates toward non-conduction.

Abstract: An apparatus and method is provided for an air bearing support of a rotatable tooling bar, such as a boring bar. One or two mandrels may be provided for this tooling bar to form a complete mandrel assembly with the tooling bar. An air pressure expansible collet is provided on each mandrel so that each may be clamped within a clamping aperture, such as an aperture on the workpiece itself. Air under pressure is supplied to the two mandrels simultaneously to accomplish, first, an air bearing centering of each mandrel around the tooling bar as a guide; second, an expansion of the collet on each mandrel for clamping of each mandrel within the clamping apertures; and, third, provision of an air bearing support and centering of the tooling bar within the two mandrels during machining for precise machining of the workpiece by the continued air supply.

Abstract: A bimetal snap disc thermostat is disclosed which is structured for automated assembly. Such thermostat includes a body with contact supports molded therein in a manner providing sufficient strength so that terminals can be riveted onto the contact supports after assembly. The body and contact support subassembly is structured so that it is symmetrical on opposite sides of a central axis. A disc cup is provided with axial and radial surfaces which accurately locate the disc during and after assembly. Also disclosed is a method of gaging and calibrating the thermostat automatically. Calibration of the spring force of the movable contact is accomplished by sensing the force in a given position and subsequently deforming the spring until a predetermined force exists in such predetermined position. Gaging is accomplished by deforming a projection from the movable contact arm until a predetermined uniform spacing is established between such projection and a gaging surface.

Abstract: Current injection logic device with a system of Josephson diodes.This system is constituted by N parallel branches, each having a first and a second Josephson diode in series, so as to provide a connection. All the first and second diodes are respectively connected to first and second main electrodes, the second electrode being earthed. The device also has M current inputs, respectively connected to M of the connections and an output connected to the first main electrode and which is to be raised to a logic level determined as a function of the values of currents injected by the inputs. In each branch provided with a current input, one or other of the diodes is shunted by a resistor, as a function of the envisaged application.

Abstract: A machine which makes building blocks from earth efficiently and rapidly has a pair of block forming molds at each end of the machine for simultaneously forming blocks at each end by means of a pair of rams. The hydraulic cylinder which actuates the two rams is located away from the axis between the two rams. The use of two molds eliminates wasted motion of the machine as a block is formed at one end of the machine as the ram is being retracted from the other end.

Abstract: The invention relates to a metal wire closely covered with a layer 5 to 100 micron thick of a polyethylene iso-terephthalate copolymer containing from 5 to 30 mol % of isophthalic acid component and having an intrinsic viscosity of from 0.7 to 1.0.

Abstract: A device is provided to store a vertical stack of newspapers in a free standing cabinet and to automatically dispense individual copies actuated by the opening of a cabinet door. The dispensing mechanism is adapted to readily retro-fit prior art honor system type newspaper vending machines and is capable of dispensing daily and Sunday newspapers irrespective of varying thicknesses or numbers of inserts. A novel high velocity paper dispenser mechanism is employed to overcome the inertia of the single copy to be dispensed and to quickly shear the frictional bond between the said single copy and the subjacent newspaper.

Abstract: A modular field strength measuring and indicating instrument that includes as one component a sensing module with a sensitive D'Arsonval meter movement and a receptacle for interchangeable plug-in type sensing modules for measuring an electrical condition, such as electrical power. The other component is a field strength sensing module that plugs into the receptacle and which includes a self-contained DC voltage source, a sensing antenna, a high-impedance, variable gain, linear DC amplifier operatively connected to the voltage source for amplifying the field strength voltage signal sensed by the antenna, and circuitry for transmitting the amplifier output voltage signal to the D'Arsonval meter movement for indicating the field strength detected by the instrument. The field strength sensing module may be used in the meter module interchangeable with other modules, such as modules for measuring RF power in RF transmission lines.

Abstract: A continuous strip covering the open mouth end of bags connects successive bags in a chain of bags. The strip is activatable relative to the bags to constitute adhesive for sealing the bags when they are filled and closed.

Abstract: An improved digital servo indicator of the continuous null-balance potentiometric type is disclosed which includes a microcomputer to provide a digital readout of the measured results in the desired engineering unit, or to use the readout in further calculations as desired. The indicator includes a digital-to-analog conversion means using a cascading series of circuits each having a precision resistance element and a pair of MOSFETs for selectively connecting a constant reference voltage to the output through the resistance element to produce the desired analog output.

Abstract: A device for classifying handled objects. This device comprises a mechanical sorting system and an electronic control system. The former comprises two storage devices, each organized in the form of a queue or line, i.e., the objects can be removed in the order in which they are entered, and a third storage device organized in the form of a stack or pile, i.e., the objects can be removed in the opposite order to that in which they entered. The mechanical system also comprises conveyors for transferring the objects between the different storage devices. The electronic system comprises a control computer, equipped with two memory zones organized in the form of a queue, and a third memory zone organized in the form of a stack, in which are stored the codes allocated to each object. The computer controls the transfer of codes from one memory zone to another, in order to sort in one of them the codes in a given order, and controls the corresponding displacement of the objects carrying the codes.

Abstract: The invention relates to an actuator and to its application to the position servocontrol for a master-slave remote manipulator.The actuator comprises a box or case in which are housed an electric motor, a slightly or non-reversible reducing gear and a torsion bar connecting the led part of the gear to an actuating plate outside the box. Potentiometers make it possible to define the position of the led part with respect to the box and the force applied to the torsion bar. Thus, it is possible to artificially provide the gear with good reversibility characteristics.Application to any movement control in robotics and particularly to the production of miniaturized master arms, master-slave remote manipulators with force return and without either a cable or belt, and to the control of heavy arms.

Abstract: A method of the heat-retention in a blind riser in metal casting by using a sand mould, characterized in that an exothermic moulded composition is arranged in a drag holding cavity below a blind riser in the cope of the mould or in the neighborhood of the blind riser before the melt is poured, and thereafter the melt is poured to cause the exothermic moulded composition to float up into the blind riser to retain heat therein.

Abstract: An ignition system of the condensor-discharge type for an internal combustion engine is disclosed which is capable of preventing delay of the ignition position at a high engine speed due to an armature reaction and preventing generation of ignition spark at reverse rotation of the engine without using a signal coil for determining the ignition position.

Abstract: A multifunction ultra-high frequency circuit and bidirectional transmission means using such a circuit. The circuit according to the invention comprises a directional coupler, two diodes, a transistor and an access connected to the diodes. The state of the transistor defines several functions of the circuit: modulation, mixing and transmission-reception separation. Application to half-duplex transmission.

Abstract: A tension control system for a baling machine has a pressure switch connected to the high pressure fluid supply. The switch is operable to actuate when the pressure of the fluid supply exceeds a predetermined level, such as when the baling head ram cylinder is approaching a stalled condition. A solenoid controlled valve is located between the high pressure fluid supply and the fluid cylinder which operates the tension mechanism on the throat portion of the baling machine. The solenoid is operatively connected to the pressure switch to close when the pressure of the fluid supply exceeds to predetermined level. When the valve closes, fluid pressure in the tension cylinder is relieved so that the cylinder operating the baling head does not become stalled. When the baling head is again capable of operation, the pressure switch deactuates, returning the valve to an open condition so that tension is restored to the throat portion of the baling machine.

Abstract: The invention concerns new substituted aminoalkanol phospholipids of the general Formula I ##STR1## and methods for the treatment of humans suffering from high blood-pressure (hypertension), from inflammatory illnesses, from tumors and/or atherosclerosis by administering medicaments containing such a compound as well as methods for plant protections.

Abstract: Apparatus for measuring the temperature and/or electrical intensity based on the Faraday effect. It comprises a probe constituted by an optical fibre, wound in a generally solenoid form and two optical fibre strands connecting the probe to an inlet coupled to a polarized light source and to an outlet coupled to means for measuring the rotation angle of the light polarization plane, the optical fibre portion constituting the probe being twisted about its longitudinal axis in a random single direction. The two optical fibre strands connecting the probe respectively to the inlet and outlet of the system are twisted in opposite directions, the number of twisting turns to the right of one of the strands being equal to the number of twisting turns to the left of the other.