Abstract: A method for manufacturing a silicon carbide fiber reinforced glass composite, which comprises either dipping silicon carbide fibers in molten glass in a tank, the molten glass being given wave vibration of 10-30 KHz by a supersonic vibrator provided with a cooling means to unravel the silicon carbide fibers and have the molten glass permeated therebetween, or plasma melt ejecting glass powder onto silicon carbide fibers to obtain a silicon carbide fiber/gass preform, molding the preform into a predetermined form and then subjecting the molded preform to thermal molding thereby to manufacture the silicon carbide fiber reinforced glass composite in the form of a molding.

Abstract: A mowing device has a number of adjacent cutting elements rotatable around upwardly extending axes of rotation. The cutting elements are supported by an elongated hollow casing located under the cutting elements. Transmission elements for driving at least some of the cutting elements are located in the casing. A reinforcing beam, extending along the rear side of the casing, has been fixed to said casing. The rear ends of tensioned resilient straps have been fixed to the reinforcing beam. The straps extend transverse to the beam and under the casing and are joined to the casing near their front ends at the side of the casing turned away from the reinforcing beam.

Abstract: A twisted flexible optical fiber bundle adapted to be used in viewing devices for transportation vehicles such as automobiles, the twisted fiber bundle being prepared by twisting each of flexible optical fiber gatherings by 180.degree. prior to longitudinally laminating the thus twisted optical fiber gatherings, thereby forming a right side-left side inverted image when used in viewing devices; and viewing devices in which the twisted flexible optical fiber bundle is used as the image transmitting means.

Abstract: Cleaning process for the gas nozzles of a welding torch in which the nozzle is guided to a processing position in which it is scraped clean by rotating blades and in which it is then sprayed with an antiadhesive agent after the blades are lowered.

Abstract: An Ultrasonic Piezoelectric Transducer for atomizing fluids oscillates at its free natural vibration in a parallel resonant circuit. Very short energy pulses are transmitted into the parallel resonant circuit to maintain continuously the free vibration. The measuring the time dependant voltage of the transducer, the transducer vibration frequency is tapped off to regulate the supplied pulses and to transmit them in proper phases. Thus, optimal atomizing is guaranteed in spite of changing operating conditions.

Abstract: A coupler for rail vehicles of a model railway is attached to the end of a vehicle along substantially the longitudinal central axis of the vehicle. The coupler is provided with a coupling carrier which has at its free end a coupling plate acting as a buffer. In the coupled condition of railway vehicles, these coupling plates abut against each other and coupling hooks are positioned behind the coupling plates to retain the vehicles in coupled relationship.

Abstract: A ball valve made entirely of plastics material comprising a tubular casing with connection pieces which are fastened to both its ends and which together form a through passage for a medium, a ball disposed in the through passage inside the casing and provided with a through opening, operating means formed by a spindle inserted into an opening in the casing, cooperating with the ball, and provided with an operating grip to enable the ball to be turned so as to close or open the through passage. The casing consists of a substantially cylindrical outer casing to each end of which the connection pieces are welded, and of an inner casing disposed therein. The inner casing being constructed of two parts each of which having a seat. Both parts are connected by means of a screwthread and enclose the ball in between them.

Abstract: The invention relates to a mowing machine comprising a frame and at least four cutting members rotatable about upwardly extending rotary axes and being each provided with cutters and drums located above said cutters, the cutting members being driven so that during operation neighboring drums rotate in opposite senses, whereby the diameters of the circles described by the ends of the cutters of the outermost cutting members during operation are larger than those of the intermediate cutting members.

Abstract: Regulating device for a central heating plant containing a hot water supply, comprising a boiler for heating a heating medium, a pipe for feeding the heating medium to space heating elements, a distribution device which is accommodated in the feed pipe and has a connection to a flow-through heat exchanger which is also connected to a return pipe from the space heating elements to the boiler. A pipe for tap water being provided in the flow-through heat exchanger and said flow-through heat exchanger being provided with a thermostat which operates the distribution device in order to change from circulation through the space heating elements to circulation through the flow-through heat exchanger and vice versa. The thermostat being adjustable to permit setting of the minimum temperature in the flow-through heat exchanger at which the distribution device switches over from space heating to circulation through the flow-through heat exchanger.

Abstract: An apparatus for compacting a solid waste material includes a hollow cylindrical body having a charging inlet for charging the solid waste material therethrough into the hollow cylindrical body, a heating portion for heating the solid waste material in the hollow cylindrical body, and a discharging outlet for discharging the solid waste material from the hollow cylindrical body; a rotatable shaft disposed in the hollow cylindrical body and having a helical screw blade thereon, the screw blade and an inner wall surface of the hollow cylindrical body being spaced from each other with a clearance provided therebetween for allowing the solid waste material in the hollow cylindrical body to form a bridge therein; a support for radially movably supporting an end of the rotatable shaft; a prime mover coupled to the end of the rotatable shaft through the support; and an outlet nozzle coupled to the discharging outlet for compressing the solid waste material discharged from the discharging outlet.

Abstract: A guide track for slaughtered poultry, which poultry is moved forward along this track, under the action of a driver, hanging down and with at least one leg supported by the guide track, in which the leg supports are formed by on the one hand a guide and on the other hand a support edge located opposite the guide and formed on the drive.

Abstract: A parking brake control device has a differential area shuttle valve which has an outlet connected to a brake actuator and a larger area of a poppet directed to an inlet connected to a control valve for applying a parking brake pressure and a smaller area of the poppet facing a second inlet connected to a service brake pressure such that in the event of simultaneous application of parking brake and service brake pressures the shuttle valve will be moved to close off the inlet to the service brake pressure while introducing park brake pressure to the brake cylinder.

Abstract: A brake lining carrier particularly for disk brakes having divided lining elements has a base plate on which is positioned an intermediate plate to support a carrier plate upon which is attached the friction lining. The intermediate plate has a number of indentations which form bulges. Bulges result in a certain degree of elasticity which provides a mobile elastic mounting support for the friction lining which may be made of sintered metal. The result is virtually noiseless braking with uniform surface application and without the generation of "hot spots".

Abstract: A writing point for a writing or recording instrument is completely or partially formed of a metallic glass or amorphous metal or the writing tip may be provided with a coating or surface layer of metallic glass or amorphous metal.

Abstract: A device for stabilizing against roll in a vehicle has the longitudinally disposed central frame members and a rigid axle is attached at the outer end of each frame member. The central frame members are constructed as trapezoidal shaped torque frames tapering toward their inner opposed ends. The shorter parallel sides which are the opposed inner ends of the trapezoidal torque frames are pivotably mounted at their midpoints to the vehicle chassis and each central frame member is resiliently supported at the opposite longitudinal sides of the chassis by laterally attached links pivotably mounted on a torsion rod the ends of which are movably supported from the vehicle frame.

Abstract: The block brake unit for rail vehicles has a service brake which includes a transmission lever which is pivoted by a brake piston to shift an actuating rod coupled with a brake block carrier. A parking brake includes a spring-loaded cylinder which is coupled by a pivotable parking brake lever through a transmission lever to the actuating rod. An impact wedge coupling comprising a roller and wedge surface is provided between the parking brake lever and the transmission lever. By a suitable choice of the inclination and shape of the wedge surface, the transmission ratio for the parking brake can be readily adjusted for requirements in particular situations without the necessity for changes of the exterior dimensions or mounts and without any changes of the transmission ratio for the service brake. The wedge surface can also be constructed to provide a constant progressive or decreasing transmission ratio and also a fast application for the parking brake.

Abstract: The invention relates to a safety device in particular for an overhead door or the like comprising fastening means for blocking the door which means are operated by an auxiliary cable under tension. The auxiliary cable having a breaking element is on the one hand connected to a reel provided with speed-limiting means for blocking the reel in case the rotation speed becomes beyond certain limits and on the other hand to the door via a lever shaped locking member which cooperates with the fastening means. The fastening means are held in an inoperative position by said locking member, while upon breaking of the breaking element the fastening means are released for blocking the door.