Abstract: A system for supplying foam liquid concentrate via a concentrate pump to one or more water pump discharge outlets. The concentrate pump is powered by a variable output hydraulic drive which in turn is automatically modulated independently of the level of operation of the water pump by a control system which is responsive both to the water pressure developed by the water pump and to the foam liquid concentrate pressure developed by the concentrate pump.

Abstract: A ring roller is mounted on an input shaft by a left-hand thread so that when the shaft is rotated in the clockwise direction the sun roller tends to unscrew along the shaft. The sun roller thus drives planet rollers axially along the shafts on which they are rotatably supported into a ring roller which is mounted on an output shaft by a left-hand thread so that it tends, upon being driven in a counter-clockwise direction by the planet rollers, to screw onto the output shaft. The axial movement of the sun roller ceases upon a suitable preloading between the sun, planet and ring rollers' being established.

Abstract: An EGR system has two vacuum modulation valves, one responsive to venturi vacuum and "EGR" pressure (which prevails just upstream of the EGR flow control valve) and the other responsive to venturi vacuum and induction vacuum. The first valve predominately dilutes the vacuum operating the EGR flow control valve during heavy load operation while the second valve predominately dilutes said vacuum during light load and/or high speed operation. With this combination, excessive EGR is avoided during said light load and high speed operations, respectively.

Abstract: A hydrofoil sailboat comprises forward and aft surface piercing hydrofoils and an asymmetrical wingsail. Both hydrofoils have an inverted arch configuration and have a cross-section which is approximately a circular segment. The wingsail has a reversible asymetry, is carried on a cantilevered rotatable mast and includes a sail sock that is highly tensioned between a single top frame member and a bisectional articulated bottom frame member, the asymmetry of the wingsail being defined by the relative position of the bottom frame member sections.

Abstract: A method and apparatus for controlling the feeding of a bandsaw blade in a horizontal bandsaw machine so that the bandsaw blade operates at a uniform optimum cutting rate. The cutting rate of the bandsaw blade is maintained constant by controlling the feeding speed of the blade into material being cut as a function of (1) the cross-sectional cut length at a time interval and (2) the feeding position of the bandsaw blade into the material.

Abstract: A windbreak which is formed of a post secured to a frame and sheet material is secured to the frame. The frame is comprised of grooved rods which secure sheet material via tube-like strips. The post is comprised of a plurality of rods and a clamp secures the rods. The adjoining rods define channels and the clamp includes projections which extend into the channels. Fittings are secured to the upper ends of the rod of the post and the frame is secured to the fittings. Fittings are further secured to the frame by dowel-like members.

Abstract: A fuel return passage is provided between the fuel tank and the float chamber of a carburetor and arranged such that when the temperature of fuel upstream of the float chamber is higher than a predetermined value, the heated fuel in which vapor bubbles are contained is forcedly returned via the return passage to the fuel tank thereby preventing the carburetor from being supplied with such heated fuel.

Abstract: In a paper delivery apparatus of the type wherein printed paper is cut into sections having a predetermined length and cut papers are delivered in the horizontal direction to be horizontally laminated on a pedestal, there are provided delivered paper guide belts with their lower runs running in a direction of paper delivery and a rotating brush roller provided at one end of the delivered paper guide belts. The rotating brush roller is implanted with a plurality of circumferentially spaced apart bristle bundles and rotated in a direction to press down the delivered paper onto the pedestal. According to this invention, it is not only possible to cause the papers to fall down while maintaining them at an horizontal attitude but also to eliminate curls formed at the ends of the delivered papers, thus neatly aligning the ends of the laminated papers.

Abstract: A longwall mineral mining installation has a conveyor and a plurality of roof support units positioned side-by-side on the goaf side of the conveyor. Each roof support unit has a roof shield having an advanceable shield extension. Each unit has a first hydraulic ram for extending its shield extension, and a second hydraulic ram for advancing the conveyor. The extension of each first ram is controlled in dependence upon the retraction of one of the second rams (either the second ram of the same unit or that of an adjacent unit). This control is effected by controlling the supply of pressurized hydraulic fluid to the first rams. In one embodiment this is carried out by a control valve which has a spring-loaded plunger which engages with a series of equispaced cams on the movable cylinder of the associated second ram. In another embodiment, the piston rods of the rams are provided with series of equispaced magnets.

Abstract: A sleeve-type bearing includes an outer sleeve, an inner sleeve, and an oscillation-damping material fixedly disposed between the outer and inner sleeves. It is preferable that such a bearing is used to support a crankshaft of an automotive engine.

Abstract: A liquefied gas overcharge prevention device provided with a safety valve. The overcharge prevention system comprises, in combination, a conventional pressurized gas tank charging valve having a liquid level responsive gas inlet valve mechanism, a first relief valve for regulating pressure within the tank and a second relief valve for regulating back pressure within the charging valve.

Abstract: A mine roof support has hydraulic props mounted between a floor sill and a roof bar which can be raised and lowered by extension and retraction of the props. A goaf shield is pivotably connected to the rear of the roof bar and is linked via levers to the floor sill. A hydraulic piston and cylinder unit is connected between the roof bar and the goaf shield. Apparatus serves to prevent damage to the support components, and especially to the unit which could be extended beyond its full stroke when the props are retracted to bring the goaf shield and the roof bar more or less into alignment. The protective apparatus is composed of a compact valve device operated by a member, such as a cam, to block the props from hydraulic pressure when the goaf shield and the roof bar assume a pre-determined angular disposition. Both the valve device and its operating member are disposed in a protected position within chambers formed inside the roof bar and the goaf shield adjacent the pivot connection therebetween.

Abstract: A rear view mirror arrangement including a mirror housing mounted on the vehicle side door with face to face contact. The mirror housing is retained in a position laterally protruding from the vehicle side door by spring force provided by a spring positioned between the mirror housing and the vehicle side door. The spring force permits the mirror housing to temporarily displace from the vehicle side door in response to an impact applied to the mirror housing in order to absorb the impact. The mirror arrangement has a mirror angle adjustment lever capable of adjusting the mirror angle in both vertical and horizontal directions. The mirror angle adjustment lever is releasably connected to the mirror permitting the displacement of the mirror housing with respect to the vehicle side door when the impact is received by the mirror housing.

Abstract: A scraper-chain conveyor has channel-sections or pans arranged end-to-end along which a scraper-chain assembly is circulated. Each pan is composed of rolled side walls with a floor plate welded therebetween. The side walls are reinforced by upper and lower elongate bars welded to their exteriors. These bars have shaped apertures designed to accept and locate the heads and shanks of bolts used to fix attachments to the side walls. The side walls are recessed behind the apertures and these recesses define with the apertures, pockets for receiving the heads of the bolts.

Abstract: A device for use with a wheel axle shaft and housing for preventing oil that leaks from within the axle housing from escaping along the axle shaft to a brake device, comprises an oil passage along the axle shaft to discharge the leaked oil from the axle shaft, and an annular member securely mounted on the axle shaft and in the oil passage to splash the leaked oil guided thereon radially and outwardly by applying a centrifugal force to the oil, thereby effectively discharging the leaked oil from the axle shaft in order to prevent the leaked oil from travelling along the axle shaft to reach the brake device.

Abstract: A bolt type lock puller for removing jammed bolt type locks from lock housings. This lock puller is necessary to correct situations in which a thief has tried to open a bolt type lock by driving a nail into the keyhole. The lock is usually distorted by the nail and jams in the locked position. Therefore, the lock cannot be removed by a security key. The lock puller utilizes split jaws with opposed teeth which progressively bite the head of the lock. A longitudinally extending stud is drawn axially to cause the split jaws to pull the clamped lock out of the lock housing.

Abstract: A material handling apparatus has a first operational mode for bundling elongated elements having round cross-sectional profiles, and a second operational mode for stacking elongated elements having shaped flat-sided cross-sectional profiles.

Abstract: A vehicle trunk lid opening mechanism including a lid pivotally mounted to the trunk, and two torsion bars which are arranged to produce, when the lid is closed, a torsional force to urge the lid to open. One end of each torsion bar is connected to the lid hinge and the other end of each bar is retained in a mounting hole formed in a panel of a body pillar located in the trunk.

Abstract: A shuttleless loom weft detaining device comprises a drum around which a weft yarn is wound prior to its introduction to a weft inserting nozzle, the drum including a frustoconical section, a cylindrical section integral with the frustoconical section, a projecting section radially and outwardly projecting over the radial level of the cylindrical section, and a connecting section integral with the projecting section to connect the radial top level of the projecting section with the radial level of the cylindrical section and located to leave the cylindrical section between it and the frustoconical section, and apparatus for catching the weft yarn in association with the drum peripheral surface to detain a predetermined length of the weft yarn prior to a weft picking through the weft inserting nozzle, thereby maintaining generally constant the drawing-off resistance of the weft yarn from the drum every weft picking.

Abstract: A main roof panel of motor vehicle roof is bent to form a longitudinally extending groove on each lateral side of the main roof panel. An outer panel of each roof side rail is arranged to serve as a secondary roof panel which supplements the main roof panel, and is joined at the inner end portion thereof to the underside of the groove of the main roof panel. The joint portion between the outer panel of the roof side rail and the main roof panel is sealed by a sealant outside the groove thereby to provide improved sealing effectiveness.