Abstract: Blank jumping teleprinting method in which a document is read line by line, each line being read point by point, each reading signal corresponding to each point is stored and groups of P signals are transmitted by multiplexing to a point by point writing means organized in groups of P points and in which the white areas of a line are detected, the signals corresponding to these blank areas being jumped during transmission, wherein a line is read once and in a memory with P cells are stored the reading signals belonging to a first group of P consecutive signals containing at least one non-zero signal, then the P cells of the memory are linked with the group of P points of the writing means corresponding to said first group and these operations are repeated for a first line for the same number of times as the latter gives groups of P reading signals incorporating at least one non-zero signal, while passing from one group of P signals to the next on each new reading of the same line until the line is at an end.

Abstract: This invention discloses an air cleaning device for engines which is provided with a check valve within the induction pipe thereof to check the back flow of mixed fuel gas, and thereby prevent the engine back fire, particularly an intake air cleaner for engines in which a cyclone type dust collector having an electrostatic filter is used. In this invention is disclosed a device which can prevent the ignition of the mixed fuel gas and thereby avoid explosion of the said gas.

Abstract: A device for adjusting a clearance between a certain member and another member, includes a first elongate member such as an outer cable of a clutch system, a locking coil member having a pair of bent portions at its ends which is wound around a male screw portion of the first member, a second member such as a nut provided with a female screw portion screwed with the male screw portion of the first member and a notched portion formed in the second member, and control means such as a ring which is movable in its rotational and axial directions in relation to the second member within a limited range. The control means is operated to control the rotation of the second member so that the locking coil member is loosened from or tightly locked on the male screw portion of the first member depending on a position of the control means in relation to the second member.

Abstract: A device and a system for controlling a fluid pressure are provided. The device comprises a spooltype pilot valve including a housing, a spring-biased displaceable elongated member having an innermost and an outermost sealing means defining at least one fluid-tight annular chamber between an outer surface of the member and an inner surface of the housing and having shoulder means dividing the housing into two further, substantially cylindrical chambers. The pilot valve further includes a first opening communicating with one of said cylindrical chambers at one side of said shoulder means for effecting the displacement of said member, a second opening communicating with said annular chamber, a third opening situated in very close proximity to, and on one side of, the outermost sealing means, and two venting openings.

Abstract: A central/remote television monitoring system in accordance with the present invention includes a central station having a control signal transmitter for transmitting dual-tone camera select and single-tone camera control signals to a remote station and an audio/video receiver for receiving audio/video signals transmitted from the remote station. The remote station includes a plurality of television cameras and a control signal receiver and decoder for decoding the dual-tone camera select signals and the single-tone camera control signals received from the central station and for enabling and controlling a selected camera. An audio/video transmitter transmits the audio/video signal from the selected camera to the central station for further processing. The remote station includes an auto-enable feature by which the remote station can enable itself and the central station and a camera identification video generator for positively identifying the selected remote camera at the central station.

Abstract: An apparatus for the retraction of worn flats from the cast iron flat bars of a carding machine. A retracting wedge is mounted on a spindle nut which is threadingly mounted on a threaded spindle and movable longitudinally thereof. The apparatus is provided further with supports and clamping devices for a flat bar, which supports and clamping device are arranged such that the flat bar mounted thereon extends parallel to mentioned spindle. Upon rotating the spindle the retracting wedge moves longitudinally along the flat bar whereby its knife edges separate the worn flat from the flat bar. The retracting wedge is operable in both longitudinal directions of the threaded spindle.

Abstract: A power supply circuit arrangement for automotive vehicles comprises an engine-driven alternator, a storage battery, a battery charging circuit connected between the alternator and the battery including a diode poled in a sense to conduct current from the alternator to the battery and a plurality of connectors connected from the anode of the diode to supply current to associated load equipment. In one embodiment, a pair of series connected diodes is connected in inverse parallel relation with the charging diode for discharging the battery to supply current therefrom to the load equipments. A voltage detector is connected to the junction between the discharging diodes to generate a throttle opening signal when the voltage at the junction falls below a preset value.

Abstract: The panel is constituted by a heat-conducting flat metallic support plate provided with at least one absorbent surface composed of metallic tubes in the form of right circular cylinders having axes at right angles to the surface and disposed on a uniform lattice, and by right circular metallic cones each placed within the interior of one of the metallic tubes. The base of each cone is located at the intersection of each tube with the flat plate and the apex of each cone is located at a point within the interior of the tube. The external surface of each cone cooperates with the internal surface of the tube within which the cone is located in order to trap the entire radiation received by the panel.

Abstract: An intake air density sensor for an internal combustion engine comprises a receptacle in the form of a flask including a spherical chamber and a tubular portion having a very fine diameter, a pressure responsive casing at least whose part is made of an elastomeric membrane and communicated with the receptacle, a gas and a conductive liquid hermetically sealed in the receptacle and pressure responsive casing, respectively, so as to locate a boundary surface between the gas and liquid in the tubular portion, and a resistor longitudinally arranged in the tubular portion so as to form short-circuiting means by the conductive liquid for the resistor, thereby detecting densities of a fluid to be measured by converting variations in pressure of fluid into variations in volume of the pressure responsive casing or sealed gas and further converting variations in position of the boundary surface of the conductive liquid into values of electrical resistances of the resistor without affecting the positional movement of th

Abstract: Structure of the insulator--semiconductor type constituted by a semiconducting crystalline substrate formed from a III-V compound of formula (A.sup.III B.sup.V) coated with an insulating layer, wherein the substrate has a specific crystalline orientation and wherein the insulator is a sulphide in accordance with the formula (A.sup.III B.sup.V)S.sub.4.It also relates to a process for the preparation of such a structure.Applications of the invention occur in the fields of microelectronics and optoelectronics.

Abstract: A gas density detecting device for use in an internal combustion engine is disclosed. The device comprises a bellows having a selected gas sealed therein, a guide mechanism provided in the bellows for guiding an expansion motion thereof, a detecting portion provided in the bellows for converting the expansion motion of the bellows into a corresponding electrical output signal, and a correcting resistor provided externally outside of the bellows for correcting the converting factor of the detecting portion.

Abstract: Process for the conditioning of solid radioactive waste with large dimensions, constituted by contaminated objects such as cartridge filters, metal chips, tools etc., wherein said waste is incorporated into an ambient temperature-thermosetting resin to which has previously been added at least one inert filler, and the said resin is then cross-linked. One application is the encasing of solid radioactive waste below water, particularly at the bottom of a pond.

Abstract: This invention relates to a method and apparatus for obtaining a single photograph of electron microscope images, with low gain in magnification, of relatively thick specimen, which photograph is suitable for direct comparison with a corresponding photograph of the same specimen obtained with an optical microscope: wherein either the specimen or the electron beam is so manipulated that the electron beam passes discretely and stepwisely through sequential portions of the specimen, and prior to impinging on the photographic plate the electron beam is screened to eliminate any portion thereof which would produce aberrations or other distortion and is controllably directed to impinge on a portion of the photographic plate which corresponds to the portion of the specimen through which the beam is passing.

Abstract: A method and apparatus for controlling ignition system spark timing where exhaust gas recirculation is employed. The value of spark advance is determined based upon engine operating parameters and exhaust gas recirculation rate is sensed. Correction means is provided which corrects the value of spark advance in accordance with the sensed value or actual valve of exhaust gas recirculation rate.

Abstract: In an exhaust gas recirculation system of a compression ignition internal combustion engine, there are provided two passages, that is, an EGR passage for recirculation of exhaust gases and a by-pass passage by-passing the throttle valve in the induction passage to allow a supplemental air flow to the engine when EGR is cut off in definite engine operating conditions. These two passages are arranged to join together at a junction, in which there is provided a valve to open and close these two passages alternatively so that an adequate EGR control is performed in accordance with engine operating conditions with a simplified mechanism.

Abstract: A piston is biased by a valve so as to decrease the volume of a chamber just before seating of the valve on the valve seat and brakes and slows up movement of the valve towards the valve seat by compressing a hydraulic fluid in the chamber and forcing out the hydraulic fluid from the chamber through a hole at a limited flow rate.

Abstract: A conveyor roller having a low noise level and a long wear life consisting of a steel shaft, an intermediate layer made of a polymeric material (e.g., fiberglass-reinforced polyester) bonded to the shaft, a helical steel spring wear element situated around the periphery of the intermediate layer, and an outer layer made of an abrasion-resistant polymeric material bonded to the intermediate layer and the wear element. This roller solves the problem of high noise levels in steel plants, yet also exhibits long wear life.

Abstract: Exchanger which incorporates a casing in which the heat carried by a primary fluid is transferred to a secondary fluid so as to heat the latter, the secondary fluid circulating in the tubes, whose opposite ends issue into tubular supply and discharge mains located externally of the exchanger casing and surrounding the latter at least partly, wherein each of the tubes comprises two access devices each sealed by a removable plug, while each of the access devices is located in a part of the tube positioned between the exchanger casing and the corresponding main.The present exchanger is intended more particularly for the transfer of heat between two circuits of a nuclear power station.