Abstract: An elongated conveying device suitable for connecting spaced work stations, for example, receives a flow of objects such as component parts at an appropriate entrance. The objects are placed on a pair of spaced stationary rails from which the objects are lifted, carried forward and then returned to the stationary rails by a pair of movable rails which is rotated in a circular-shaped cycle. With each cycle of the movable rails, the objects are stepped from the entrance to an exit located some distance away. Because the rate of object input may vary from the rate of part discharge, the conveying device may include holding stations adjacent to the exit allowing the objects to accumulate in a damage resistant manner until removed from the conveying device.

Abstract: Filtering devices wherein solid particulate matter is separated by filter media from a liquid flow often contain conveying means for moving the separated solid particulate to an external point for disposition. One such conveying means usable in filtering devices includes spaced endless chain loops wherein each chain comprises alternate center links pivotally joined by pins to alternate sets of spaced side bars. In each center link is an elongated aperture which in a controlled manner holds an extension bar attached to each end of a traversely positioned flight. The spaced chain may be operatively connected to a source of rotary power to periodically advance the conveying means so that the flights may be moved over a section of the filter media to effectively remove separated particulate matter collected thereon.

Abstract: This relates to a load spring indicator for a railway car truck for indicating the load condition of springs supporting the bolster on the truck side frame. A reference is carried by the bolster and an indicator is carried by the truck side frame. The bolster reference is preferably the lower edge of the bolster gib or side rib while the indicator is an added plate or casting portion having an upper edge alignable with the lower edge of the bolster gib in the light condition of the car and a lower edge alignable with the bolster gib lower edge in the loaded condition of the car when the spring sets are of the proper strength and the car is not overloaded.

Abstract: An alloy steel is provided along with a method of making the same. The alloy is heat, wear, corrosion and oxidation resistant, and is preferably made utilizing powder metallurgy techniques. The method involves the addition of carbon and silicon to an iron base alloy containing chromium to improve the properties of the steel.

Abstract: Particulate matter collected by an environmental air quality control device may be in part toxic in nature and thus not readily disposable. By separating the toxic portion of the particulate matter from a nontoxic portion, disposal of nontoxic portion may be more easily accomplished. This separation may be readily effected where the toxic portion is soluble and the nontoxic portion is insoluble, thus allowing the toxic soluble portion to be formed into a solution with a dissolving liquid. The nontoxic insoluble portion then may be filtered from the toxic solution, rinsed, dried and disposed of accordingly.

Abstract: A rotary type railroad car coupler is provided with a symmetrical and invertible yoke. A yoke collar, constructed so as to be capable of being reversible, is disposed within a cavity of the yoke. In one preferred embodiment, a pin connecting a shank of the coupler to the yoke collar is positioned so as to be equidistant from both ends of the yoke collar. Thus, as one end of the yoke collar becomes worn, the collar can be reversed. Improved yoke collar service life is obtained.

Abstract: An apparatus for the thermal monitoring of railway wheels is provided. The monitor comprises an insert placed into the railway wheel near its rim. If the wheel overheats, the monitor will be released from its location. A subsequent inspection will readily indicate that the wheel has been overheated during operation.

Abstract: A composite friction element suitable for the manufacture of railroad brake shoes of the composition type is prepared from a mixture of a curable rubber binder having distributed therethrough a plurality of fillers and a reinforcing fiber, at least one of the fillers having an oil absorption value of at least 30 and the fiber being formed from an aramid polymer.

Abstract: A piston or wrist pin for joining a pistonhead to a connecting rod commonly used in an internal combustion engine has an elongated hollow cylindrical configuration. The metal chosen for the pin may contain selective amounts of carbon, boron, nickel, chromium, vanadium and other alloying constituents to produce a metallurgical composition which may be selectively heat treated to provide a final structure having physical properties to meet a particular job requirement. The heat treating of the pin may be accomplished in a two step procedure which creates a pin having microstructural zones of residual stress having equal and opposite values.

Abstract: A railroad car coupler having a knuckle in an open position further includes a lock which rests on a tail portion of the knuckle. By providing a continuous clearance between a leg portion of the lock and an end wall of the knuckle tail portion, lock drop reliability is increased substantially upon the knuckle being swung from the open position to a closed position.

Abstract: An aramid fiber rope having a central core surrounded with aramid fiber rope strands. The core and the aramid strands are coated with a heavy viscous lubricant prior to winding the strands into rope. The lubricated rope is then impregnated and surrounded with a plastic material to entrap the lubricant in the core and the strands.

Abstract: A flow of liquid containing suspended solid particles enters a top inlet of a setting tank of a liquid-solid separator. The tank is of such dimensions that the liquid flows in a nonturbulent flow path under a lengthwise partition in the tank and through an outlet weir opening formed in the tank on a side opposite the inlet. From the outlet the liquid may be returned for further use in a process. Under the influence of gravity, a substantial portion of the solids in the flow slowly settles downward and collects to form a cake on a movable collection means serving as part of a bottom of the tank. Periodically the movable collection means is advanced toward a discharge point located exterior to the tank for convenient disposal of the solids collected on the movable surface.

Abstract: A wear liner is provided for the roof of the pedestal jaw of a side frame. Movement of the wear liner relative to the pedestal roof is inhibited by projections extending upwardly from the lateral edges of the wear liner and/or depending legs which extend from the wear liner and cooperate with the stop lugs of the pedestal jaw. The need for conventional welding is reduced or eliminated.

Abstract: A dual rate spring device particularly adapted for use in a suspension system of a railroad car truck includes a vertically mounted light duty spring means positioned, for example, between a side frame of the truck and a load carrying bolster of the truck to support the bolster when in a lightly loaded condition. Positioned around the light duty spring means is a shorter heavy duty spring which with the light duty spring supports the bolster when in a heavily loaded condition. To insure that the device functions properly under varying load conditions, a lower end of each spring is connected by a spring retainer.

Abstract: A filter device wherein inlet and outlet chambers are spaced from each other by a segment of filter media is positively locked in a condition whereat the chambers are sealed with respect to each other and the atmosphere by a hydraulic power device to which hydraulic pressure fluid is delivered at a predetermined pressure value. Filtrate is then delivered to the inlet chamber at a pressure which increases in value as the filter media becomes fouled with particulate.

Abstract: A truck for a railroad car includes two spaced side frames which resiliently support ends of a transversely positioned bolster in a window formed in each side frame. On each side of the bolster is a vertical recess formed having opposing convex-shaped sides which engage with end walls of vertical ribs formed on the inner and outer side of spaced sidewalls of the side frame window. In downwardly projecting pedestal jaws formed at each end of each side frame and having selectively spaced sidewalls are journaled axle ends of a front and a rear wheelset. Interposed between each axle end and a roof of the pedestal jaw is a bearing adapter having a convex top surface to engage with a concave surface of the roof of the side frame pedestal jaw.

Abstract: A pipe coupling including an annular lip seal that wipes the contacted pipe portion clean, when inserted therein. The lip seal also, while the pipe is situated in place while in use, precludes the entry of foreign material, such as sand or dirt, between the pipe and coupling. An inner seal further prevents leakage between the pipe and the coupling.

Abstract: A pair of elongated latches positioned transversely to a longitudinal axis of a railroad car particularly adapted to be rotated to an upside down position for gravity release of contents within the car, are pivotally attached respectively on each side of a top of a coupler lock. The coupler lock is an operative part of a coupler for the railroad car. The lock is movable within a lock chamber formed in a head of the coupler and is defined in part by vertical sidewalls and a roof or top wall. A configuration of each latch and relative position to the lock chamber sidewalls is such that a center of gravity of each latch lies above its pivot connection which insures that regardless of the direction of rotation of the car, at least one of the latches readily swings to an extended position to engage the top wall of the lock chamber and thereby prevent an inadvertent release of the lock when the car and at least one pair of mated couplers are rotated toward an inverted position for emptying contents of the car.

Abstract: A local zone only of a powdered metal part is hardened by heating the part, in contact with a powdered metal alloy briquette with a surface of the zone to be locally hardened, to the liquidus range of the briquette and holding the part and the briquette at the liquidus range for a length of time sufficient for the liquid metal and hardening elements of the briquette to infiltrate into the local zone of the part.

Abstract: An apparatus for the quick connection and disconnection of a movable filter belt to a conveyor chain. A projection arm is attached to the conveyor chain, with a portion of the arm extending over the filter belt. A plate is attached to the filter belt. The plate has deflectible arms, and one of the arms has an aperture for receiving a portion of the projection arm.