Abstract: A railway truck for a railway vehicle which has steerable axles has axle bearings supported by support pedestals. Each support pedestal is located longitudinally by a flexible bar element which aallows the pedestal sufficient vertical movement to accommodate varying load conditions and also allows rotation about a horizontal axis which is not coincident with the axle bearings but restrains horizontal movement fore and aft of the rotational axis. A steering assembly reacting to relative rotational movements between the truck and the vehicle permits pivoting of the support pedestals about the horizontal axis. The tipping of the pedestal moves the axle bearing in the fore and aft direction which effectively rotates the axle about a vertical axis so as to guide the axle of the railway truck into radial alignment with respect to a curved track. The structure has the effect of an "inverted" pendulum, that is a pendulum with negative restoring force.

Abstract: A method and apparatus of stimulating production from an oil well by removing solid wax deposits from a production zone, includes an electrical resistance heater comprised of a packed bed of spherical heating elements lowered through the tubing on a wireline and placed adjacent to the perforations. Solvent is pumped through the heater to raise its temperature by 200.degree. C. and then into the formation to contact wax deposits. The solid wax deposits are liquified and together with the oil and the solvent form a single liquid phase. The wax is then removed from the formation by placing the well back on production. Because the invention completely avoids the use of either water or gas, the saturation of the water and gas phases in the formation is minimized, thereby maximizing the mobility of the liquid phase containing the wax and facilitating the removal of the liquified wax from the treatment area before it reprecipitates.

Abstract: A closure for a container has two parts, namely an inner sealing member and an outer cap. The inner sealing member has a tab extending down between a bottle neck and a depending side wall of the cap. The tab is folded around the cap wall to form an upwardly extending portion. A patch of adhesive secures this tab portion to the cap. This prevents unauthorized removal of the cap and provides visible and external evidence of any tampering.

Abstract: A fluxgate sensor has a coil body defining a bore and an axis. A coil is wound on the coil body around the axis. A ferromagnetic core is located in the bore and extends beyond either end of the coil, to improve the sensitivity of the sensor. The core may be elongate and have a non-circular profile such as a zig zag pattern. In a gradiometer, the core configuration facilitates balancing of two sensors by either radial or axial adjustment of the core.

Abstract: A respiratory apparatus, which receives exhaled gas from a user, removes carbon dioxide from and introduces oxygen into the exhaled gas, to present a breathing gas to a user. A respiratory flow transducer in the respiratory apparatus is subjected to the breathing gas demand of the user. Oxygen is introduced into the breathing system by an oxygen flow regulator connected to an oxygen supply inlet. The respiratory flow transducer and the oxygen flow regulator are connected by a linkage. The linkage constrains the oxygen flow regulator and respiratory flow transducer to operate together whereby there is a substantially constant ratio between the breathing gas flow rate and the oxygen flow rate.An air bleed system can be connected to an air inlet to introduce air into the respiratory apparatus and to displace a portion of the gas from the respiratory apparatus.

Abstract: A device for working a conditioning substance on a surface comprises a body portion containing an activatable motor. A head attached to the body portion has an outer head and a rotatable inner head. A drive shaft extends between the motor and the head, and is driven by the motor. The drive shaft has a first drive take off for imparting rotation to the inner head about a first central axis of rotation passing through the inner head. The drive shaft also has a second drive take off for imparting rotation to at least one massaging element about a second axis of rotation passing through the massaging element by frictionally engaging the massaging element, each massaging element being located within the inner head and extending past an outer surface thereof. When the motor is activated, each massaging element is simultaneously rotated in two manners, firstly, about the first central axis of rotation and secondly about the second axis of rotation, to work the surface upon the device being then applied.

Abstract: A support stand including three upright, cylindrical lower support legs, each leg having a foot extending perpendicularly of the lower end of the leg. The stand further includes two vertically spaced connecting blocks having aligned linearly arranged apertures for receiving the legs, with the upper block mounted over the upper ends of the legs. The two outer legs are rotatably mounted in the blocks to permit the outer legs to be rotated to move the respective feet between a storage position, with the feet substantially aligned and extending perpendicularly of the blocks, and the support position with the feet splayed apart. An upright, cylindrical upper support leg is provided for mounting a support for a book, or piece of equipment such as a microphone and is telescopicaly received within the center leg.

Abstract: A process and apparatus are described for agglomerating metal-containing fine sized particles of metallurgical waste materials continuously by means of a combustible agglomerating agent. The process and apparatus may be adapted to dust and fine particles of different origins and having any particular particle size range and bulk specific gravity. The agglomerates are obtained by feeding the dust or fine sized particles and a combustible agglomerating agent to a continuous mixer, then to a heated rotatable kiln. The agglomerates are subsequently allowed to fall onto one or more conveyor belts, arranged in sequence. The agglomerates on the conveyor belts may be cooled, either by water or compressed air jets impinging upon them, or by cooling the belt surfaces on which the agglomerates are carried. The agglomerating agent may be a low melting point hydrocarbon such as wax, tar, pitch, or the hydrocarbon may be emulsified with water to form an emulsion and then mixed with the particles.

Abstract: Method and apparatus for controlling dispensing of "dry" powdered compositions particularly carpet cleaning compositions wherein the confined finely divided particles descend in a stream under gravity and have oscillatory movement imparted thereto next before discharge through an orifice leading therefrom so as to agitate, separate and propel the particles therethrough; and in the case of carpet cleaning operations depositing the finely divided discharged particles onto the surface of the fibres in a substantially uniform pattern thereover followed by working same into the fibres through the application thereto of a rotary brush or beater and thereafter recovering the residues by a suitable suction or vacuum unit utilizing a rotary brush or beater and an associated two stage cyclone separator.

Abstract: This invention relates to a communication line filter for use in series with communication lines. The communication line filter provides for surge protection from voltage spikes and provides frequency filtering to remove selected interference signals from other radiating sources. The communication line filter comprises: two signal conductors linked together by a fuse; a common signal ground; and two shunts for shunting a surge current between the signal conductors and the common signal ground. The shunts provide protection from short duration voltage spikes while the fuse provides protection from longer duration overvoltages. The communication line filter functions effectively, independent of the direction of current flow along the communication line with respect the line filter. The two shunts and the fuse are selected to provide the required capacitance and impedance respectively, to form a suitable frequency notch filter.

Abstract: A plate, for use in adjusting the rear wheels of a four wheel vehicle incorporating all wheel steering has an elongate sheet-form bearing cage, which includes a plurality of apertures. Ball bearings or other rolling elements are located in the apertures, and a top sheet member is located on top of the ball bearings. In use, the ball bearings are supported on a horizontal planar surface, for example a support platform of a hydraulic lift or a separate base sheet member. The configuration of the cage and the bearings is such that the top sheet member is capable of limited lateral and rotational movement in a horizontal plane, to permit full adjustment of rear wheels of a vehicle having a steering capacity.

Abstract: The support tower comprises three (3) generally parallel legs positioned relative to one another to form a triangular configuration and each leg having a bottom end and a top end. A plurality of cross bracing is provided securing the legs to one another intermediate their ends. A first mount is located adjacent the top ends of the legs and is capable of supporting pivotally and slidably a microwave dish. A second mount is located on each leg for mounting cellular antennas generally back to back. The tower further includes an albow adjacent each top end of the legs wherein the elbow displaced the legs outwardly to increase the lateral spacing between the top ends of the legs.

Abstract: The present invention provides a flash adaptor for use with a camera. The flash adaptor comprises a camera support attachable to the camera with a flash support mounted on the camera support and moveable between first and second positions. A flash receptacle, which is located on the flash support, is provided for receiving the flash. Engagement means are also provided for releasably engaging and securing the flash support in each of the first and second positions.

Abstract: A garment for use in patient examinations where particular examinable areas remain covered until they are individually accessed or until the patient is placed in an examining position. The garment comprises an upper portion for receiving and covering the patient's upper body, and a trouser portion for receiving and covering the patient's lower body. There is also provided upper access means located on the upper portion for exposing an upper examinable area, and lower access means located on the trouser portion for exposing a lower examinable area.

Abstract: A vehicle wash system includes apparatus for washing side and rear surfaces of a vehicle and apparatus for washing the front and upper surfaces of a vehicle. The apparatus for washing the side and rear surfaces includes a side and rear follower mounted on a support frame to the side of a vehicle path and moveable from a first position to the side of the vehicle path to a second position inwardly of the side of the vehicle path, nozzles being mounted on the end of the follower. With the follower in the first position, the nozzles are directed towards the vehicle path and thus towards a side surface of a vehicle, and when the follower is moving between the first and second positions, the nozzles are directed along the vehicle path and thus towards the rear surface of the vehicle.

Abstract: A process for etching aluminum in caustic solution capable of providing a consistently uniform matte finish like that of the never dump process, but with little waste like the regeneration process. Etching is performed in a solution containing free sodium hydroxide and dissolved aluminum in a ratio between about 0.6 and 2.1 g/l and also containing an etch equalizing agent at a temperature above about 70.degree. C. Preferably, the etch solution is regenerated through a crystallization loop.

Abstract: A padded toilet seat lid is made by magnetically induction welding to the upper surface of a plastic lid shell, a plastic frame which surrounds a cushion providing the padding. The frame traps a peripheral margin of the cushion against the upper surface of the lid. The cushion is also secured to the lid by a pressure-sensitive adhesive. Welding of the frame to the lid is accomplished in a special fixture that supports the lid and cushion upside down.

Abstract: A process is described for the agglomeration of fine particles utilizing a combustible agglomerating agent dispersed in an aqueous emulsion. The process is particularly directed to the handling of fine metal containing particles, originating as by-products or waste products of metallurgical processes, which are to be stored or recycled to metal extractive process steps. The amount of agglomerant added as aqueous emulsion to the particles, is calculated by correlating in an empirical formula the bulk density and the average particle size of the particles, with the emulsified combustible agglomerating agent to be added expressed as weight percent of the particles. The calculated amount of combustible agglomerating agent is emulsified in water, then mixed and blended with the particles, which usually comprise particles of non-uniform size distribution. The aqueous emulsion may also be formed in-situ on the surface of the particles, and the mixture is then blended to form agglomerates.