Abstract: Disclosed is a concentration difference energy operated power plant comprising an aqueous solution tank containing an aqueous solution of slats, a pure water boiler disposed within the tank and completely immersed in the aqueous solution therein, preheater means for preheating the aqueous solution in the tank to a temperature very close to the boiling temperature thereof, and a steam engine which is operated by the steam generated in the pure water boiler, the steam discharged from the steam engine being injected through nozzles into the aqueous solution in the tank, dissipating the latent heat to the aqueous solution. Also disclosed is the compositions of the aqueous solutions used in conjunction with the above power plant.

Abstract: Apparatus for making a frusto-conical container from a blank having a base panel and side panels which are folded relative to the base, clamped between tools of an injection moulding machine and seamed by injected material fed along one face of the blank, the other faces of the side panels spanning a circumferential channel into which they are forced by injected material to form a circumferential bead, at the axial seams the channel being reduced in depth to support the side panels against displacement of the edges by injected material such as will allow injected material to reach that face of the blank nearest the channel.

Abstract: In a disc brake including pad assemblies for engagement with opposite faces of a rotatable disc and a clamp assembly extending over the peripheral edge of the disc, the clamp assembly comprises pressure plates interconnected by spaced parallel limbs passing through superimposed openings in the plates and interconnected at one pair of adjacent ends by a bridge piece which acts on one of the pressure plates.

Abstract: A tilt-type aerosol dispensing valve is made child-resistant by arranging that the actuating button is axially movable between a free position (in which it can be operated) and a locked position in which parts of the button engage part of the valve mounting to prevent tilting. For example the button may have a skirt which, in the locked position, fits over the central boss of the valve mounting cup. The overcap can be arranged to push the button to the locked position automatically as the overcap is applied.

Abstract: In a disc brake of the kind in which the clamping member straddling the disc consists of pressure plates located on opposite sides of the disc and interconnected at their outermost ends by draw-bars, each draw-bar is provided at one end with a threaded portion and the threaded portions are passed through spaced clearance bores in the pressure plate to which those ends of the draw-bars are to be connected. The pressure plate is clamped between pairs of axially spaced nuts screwed onto the threaded portions.

Abstract: In a valve assembly for a telescopic damper, comprising a piston with flow channels controlled by valve members located on opposite sides of the piston, axially directed, annular valve seats which cooperate with the valve members are provided on separately formed seat members positioned against the side faces of the piston and having apertures aligned with the piston channels.

Abstract: An automatic slack adjuster for a vehicle brake linkage comprising a housing constituting a lever in the linkage, and the lever is angularly movable about the axis of a shaft to impart to the shaft a brake-applying rotary movement which it transmits to it through a meshing worm and worm wheel assembly. Automatic worm driving means are incorporated for rotating the worm for adjustment of slack in the linkage in response to relative movement between the lever and a relatively stationary part, and the worm driving means incorporates a connection having a degree of lost-motion equivalent to a desired braking clearance, and a spring-loaded two-part clutch disposed between the worm and a slidable pawl connected to the stationary part.

Abstract: Disclosed is a furnace wall structure which is placed in opposed relation with electrodes of a electric arc furnace and is made of copper or copper alloy in order to ensure a long service life, improved safety and a minimum thermal loss and in which a front plate which defines a heat-receiving surface exposed within the furnace is cooled by the forced circulation of cooling water.

Abstract: A disc brake assembly for a vehicle comprises a first inboard and a second outboard rotatable disc which are both relatively fixed and spaced axially. Superimposed friction pads for engagement with opposite faces of the discs are guided in a common drag-taking member which takes the drag on the pads when the brake is applied. A mechanical expander mechanism is housed between and acts directly upon the oppositely directed inner friction pads for engagement with the adjacent faces of the discs to apply the said oppositely directed pads to the discs, and a clamp assembly extending over the peripheral edge of both discs comprises coupled beams. The clamp assembly incorporates an actuator acting between one of the beams and one of the remaining friction pads to apply that friction pad to the inboard face of the inboard disc, and the other beam acting on the other remaining pad to apply thereto a reaction force in turn to apply that pad to the outboard face of the outboard disc.

Abstract: A sliding caliper disc brake comprises a torque member, a caliper member slidably mounted on the torque member for straddling a minor portion of the periphery of a rotatable disc, and an actuator for directly urging a friction pad against one side of the disc to cause the caliper member to slide relative to the torque member to apply by reaction an opposite friction pad onto the other side of the disc. The caliper member is slidably mounted on the torque member by a sliding connection which includes a pin element having a portion slidably received in one of the members. The latter pin element is connected to the other of the members by an arrangement which permits lateral displacement of the pin element with respect to the other of the members. Laterally extending friction surfaces are provided on the pin element and on the other of the members. The latter friction surfaces are axially biassed towards each other so as to provide frictional resistance to the aforegoing lateral displacement.

Abstract: A capsule for enclosing a sub-sea installation part is intended to be left water-filled and thus means for sensing oil or gas leaks from the part is disposed in the upper part of the capsule to where such leakage will float.

Abstract: An automatic slack adjuster for a vehicle brake linkage comprising a housing constituting a lever in the linkage, and the lever is angularly movable about the axis of a shaft to impart to the shaft a brake-applying rotary movement which it transmits to it through a meshing worm and worm wheel assembly. Automatic worm driving means are incorporated for rotating the worm for adjustment of slack in the linkage in response to relative movement between the lever and a relatively stationary part, and the worm driving means incorporates a connection having a degree of lost-motion equivalent to a desired braking clearance, and a spring-loaded clutch of the multi-plate type disposed between the worm and a slidable pawl connected to the stationary part. The clutch includes primary clutch plates and secondary clutch plates with each secondary clutch plate being provided with a tooth, and all the teeth being received in a common notch in the pawl.

Abstract: A dart has a unitary plastics flight of cruciform cross-section, the four wings being joined directly together at the spine. Before the flight is fitted to the shaft of the dart, the wings are folded flat, one pair on each side of the spine and an aperture is cut through the spine and a small metal cap fitted into it. The flight is unfolded to its cruciform cross-section and the wings fitted into slits in the end of the shaft. The cap fits over the tail end of the shaft to urge together the prongs formed by the slits and to cover the open ends of the slits.

Abstract: A pressure reducing valve for a vehicle braking system, comprises an inlet and an outlet communicating with each other through a radial port, and an elastomeric seal movable relative to the port between a closed position in which the seal covers the port and an open position. The seal is arranged to cover the port on the outlet side thereof so that the interface between the seal and the port is subjected to inlet pressure.

Abstract: An hydraulically operated disc brake includes a yoke slidably mounted on a stationary member for movement in a direction parallel to the disc and two pistons for actuating the brakes. The first piston acts directly on a friction pad and the second piston acts directly on the yoke and indirectly on a second friction pad through the yoke. The yoke is mounted on the second piston and on a retaining member which extends between the yoke and the stationary member to locate the friction pads against radial movement. The retaining member is rigidly secured to the stationary member and a resilient connection is provided between the stationary member and the yoke.

Abstract: In a pressure differential warning actuator for detecting when a differential between the pressure of separate brake circuits of an hydraulic braking system exceeds a predetermined value, at least two separate pistons work in separate bore portions in a common housing and are movable between a neutral position when the predetermined value of the differential pressure is not exceeded and an operative position, in which an indicator mechanism is actuated, when the predetermined value is exceeded, and the pistons act through a lever ratio change mechanism to restore them from the operative position to the neutral position when the differential is reduced to less than the predetermined value.

Abstract: Disclosed is a rotary burner of the type wherein the liquid fuel (to be referred to as "the oil" hereinafter in the specification) is atomized by uniform and stable ultrasonic waves and the oil particles are prevented from being sprayed outwardly so that the non-uniform distribution of concentrations of oil particles results, whereby the uniform combustion may be ensured.

Abstract: A method of forming an injection moulded lining on a valve body comprises the step of defining a cavity having a main portion which when filled with lining material forms the desired lining, and an extension portion continuous with an edge of the main portion. Lining material is injected into the extension portion until the cavity is filled. Any sprues produced by the injection are on the tab formed by the material in the extension portion and not on the lining proper. Thus, there is no danger of damaging the lining as sprues are removed, and they do not cause local stress in the lining.

Abstract: A booster operated master cylinder piston for use in an anti-skid braking system includes a modulator piston located between the master cylinder piston and the booster valve assembly. In the event of a skid the pressure of booster fluid acting on the modulator piston is equalized across the modulator piston.

Abstract: Both of the upper and lower blades carried by the upper and lower drums, respectively, or either of the upper or lower blade is so arranged as to partially describe a non-circular locus having the vertically extended major axis when complete shearing is effected.