Abstract: The present invention is an accessory brush attachment for a vacuum cleaner including an accessory motor and an accessory housing having a front end and a back end. The accessory housing encloses the accessory motor. The accessory housing has an intake aperture for reception of dirt, liquid and air drawn into the accessory housing in response to a vacuum produced by the vacuum cleaner. A rotatable brush is disposed within the intake aperture for contacting a surface to be cleaned. A means interconnects the brush and the accessory motor for allowing the accessory motor to rotate the brush. The housing includes first means for mounting the accessory brush attachment at a first point to the canister of the vacuum cleaner and a second means for mounting the accessory brush attachment at a second point to the vacuum cleaner housing.

Abstract: A loader vehicle boom arm assembly incorporates a pair of box section boom arms in which the top plate of each box section boom arm has a cross sectional shape such that the upper surface is provided with an arcuate surface that directs foreign objects encountering the arcuate top surface off the boom arm.

Abstract: Monolithic refractories comprising non-basic refractory aggregates, a binder, and vinyl chloride acetate.

Abstract: A railway car coupler includes a shank, a head connected to a head end portion of the shank, a knuckle pivoted to the head having closed and open positions, and a lock axially movable within a chamber formed in the shank between a knuckle engaged position for maintaining the knuckle in the closed position and a knuckle disengaged position for enabling the knuckle to be pivoted to the open position. A thrower is pivotally connected to the lock and has an arm disposed to one side of the pivot for engaging the knuckle to rotate the knuckle to its open position. An actuating mechanism is connected to the thrower-lock assembly and is axially movable within the chamber. The actuating mechanism functions to axially move the lock towards its knuckle disengaged position, with continued movement of the actuating mechanism in the same direction pivoting the thrower and consequentially the knuckle to its open position after the lock has obtained its knuckle disengaged position.

Abstract: A vibrating screen used for the fine screening of solids from a slurry containing solids includes a base, a screen box having feed end and discharge end with said screen box being resiliently supported on the base, and a drive for vibrating said screen in a generally longitudinal direction. The screen includes at least two overlying layers of relatively fine mesh screen cloth. A tensioning device is connected to one end of the screen cloth for tensioning the screen cloth in a direction parallel to the direction of motion of the screen cloth.

Abstract: A load supporting hydraulic system having main control valve provided with a load check valve and a vent valve; the load check valve, which has a hose connection to the main control valve, is operative to permit free flow of fluid from the control valve toward the load supporting chamber of the system and to block fluid flow from the load supporting chamber toward the control valve, whereas the vent valve is operative with the control valve to permit the load check valve to be opened by fluid pressure from the load supporting chamber to allow fluid flow therefrom thru the hose connection and control valve to drain. A cancelling valve is added to the system to override the vent valve upon failure of the hose connection and reblock fluid flow from the load supporting chamber toward the hose connection and control valve.

Abstract: A door and window arrangement for hingedly mounting in the opening of a cab frame wherein a door frame is formed complementary to and fitting within the opening and having a first frame extending inward. A sub-assembly is formed having an outer frame with a second flange extending toward and in close proximity to the first flange. A gimp engaging both flanges joins the door frame and subassembly into a completed assembly. An inner frame defining a pair of tracks is fastened to the inside of the inner frame. A fixed pane of glass is sealed into the lower portion of one track and a movable pane of glass is mounted in a metal frame with a plastic slider affixed to vertical members of the metal frame positioned within the other track.

Abstract: A pivot assembly for mounting a bucket to a loader arm wherein shouldered pin adapters having a pin bore are tack welded in the bucket brackets so that when pounding occurs between the pin and pin bore, the pin adapter can be replaced to provide a new pin bore. The pin adapters are located on the interior sides of the bucket brackets and the external corner is indented to define a seal groove which provides an additional seal between the loader arm and the pivot pin.

Abstract: A pivot pin assembly for a bucket loader wherein a pivot pin having an enlarged tapered head passes through bushings in the loader boom arm to a distal end whereat an externally tapered thrust collar is slideably mounted thereon. An adjustment plug is threaded in the thrust collar and regulates the spacing between the collar and the pin end thereby setting the side clearance for the bushings. A pair of split wedge collars respectively lock the tapered pin head and the thrust collar in the bushing bracket apertures, the split collars being wedgingly locked by end plates bolted to the respective ends of the pin. Lip seals are provided between the boom arm and the pin head and the thrust collar and the boom arm and the pin is provided with an internal lubricant reservoir communicating with the boom arm bushings which may be easily refilled as necessary.

Abstract: A steering system for a construction vehicle operable to control the position of a pair of front wheels and a pair of rear wheels relative to the frame of the vehicle includes a hydraulic fluid circuit for distributing hydraulic fluid. A hydraulic cylinder is connected to each of the wheels for turning same in a desired manner. A steering wheel is interposed in the hydraulic fluid circuit for selectively directing hydraulic fluid to the cylinders for steering said wheels in a desired direction. A mode selector valve is interposed in the fluid flow circuit between the steering wheel and the cylinders for selectively selecting either four-wheel steer, crab steer, or front-wheel steer mode of steering for said vehicle. A control momentarily overrides the mode selector valve to isolate the rear hydraulic cylinders from the front hydraulic cylinders for permitting independent movement of the rear wheels of the vehicle.

Abstract: A knuckle railway car coupler includes latching means for maintaining the coupler locked when the coupler is placed in an inverted position. The latching means includes a latching member connected to the lever of the rotary lock-lift assembly of the coupler and is supported thereon in an inoperative position when the coupler is in its normal, upright working position. An abutment member extends into the chamber defined by the coupler head. The latching member is spaced from the abutment member in the inoperative position and moves into engagement therewith when the coupler is inverted to prevent rotation of the lock-lift assembly and subsequent movement of the coupler lock between locking and unlocking positions.

Abstract: A vehicle heat exchanger system having air stream suppressing baffles detachably mounted in top and lateral and bottom clearance spaces formed by transverse top and lateral vertical sides of an air plenum and a draped enclosure structure and by a transverse bottom side of the plenum and a transverse member of the vehicle chassis frame.

Abstract: A stress distributing plate member for a bucket tilting hinge bracket attached to the exterior wall of a material handling bucket.

Abstract: A sideboom crawler suspension in which the track roller frames disposed at either side of the crawler are braced by a special linkage provided at each side to keep the track roller frame at that side from twisting out of a vertical plane. The frame-twisting or tilting force exerted in the suspension intensifies when the sideboom crawler is doing sidehill work.

Abstract: A method for drying oil well drill cuttings to eliminate pollution causing organic material from the cuttings includes conveying the drill cuttings bearing the organic material to a heat transfer zone. Large quantities of relatively warm fixed gas are supplied to the heat transfer zone, with the gas functioning as a heat transfer medium. The gas is mixed with the drill cuttings to vaporize water and pollution causing organic material therefrom, with the temperature of the drill cuttings subsequently increasing.

Abstract: A multi-functioning hydraulic transmission control circuit in which a shifting power is provided by hydraulic pressure.

Abstract: A tractor type motor vehicle is provided with a two compartment front end assembly, one compartment being an engine enclosure and the second compartment being a heat exchanger compartment. Each compartment is evacuated by a separate fan that directs air to a common discharge opening between the two compartments. Improved cooling and noise control are realized by the utilization of the invention.

Abstract: A means for pivotally mounting the bellcrank of a bucket linkage between the boom arms of a loader, including pivot castings secured to each of the boom arms, a shaft extending through said pivot castings and the bellcrank, a plate secured to one end of the shaft and bolted to the adjacent pivot casting to prevent rotation of the shaft relative to the boom arms, and a second plate bolted to the other end of said shaft to limit inward axial movement of the shaft relative to the adjacent pivot casting.

Abstract: A variable speed engine (10) drives a tractive effort drive train (12) and fixed and variable displacement pumps, (14 and 16) arranged to supply fluid pressure to a hydraulic work system (24). The displacement of the variable pump (16) is determined by a control ram (42) and a conduit (44, 53, 74) interconnects the variable pump output and the control ram (42). An engine speed control valve (60) and a system pressure compensator valve (46) interposed in series in said conduit (44, 53, 74). The two valves (60 and 46) maintain the variable pump (16) at full output except when low engine speed and high system pressure exists simultaneously.

Abstract: A construction for the cone section zone of oxygen converter vessels consisting of a plurality of courses of refractory brick having a parallelogram configuration to provide a smooth surface for the working lining face.