Abstract: The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety.

Abstract: A derailment prevention guard includes a guard member (3) installed within a gauge and a support member (6) fixed to a sleeper (4) or a concrete slab track. The guard member (3) engages a hold member (8) moveable around an axis (7) supported by the support member (6) as turning center between a main rail (1) and the inside of the gauge on the sleeper. The support member (6) engages the hold member (8) by bolt (12) through turning the hold member (8) toward the main rail (1) around the central axis (7) as turning center on the sleeper (4), and the guard member (3) can be shunted inward by turning the hold member (8) toward the inside of the gauge around the central axis (7) as turning center on the sleeper (4) after loosening the bolt (12).

Abstract: A railroad track is provided having a running rail and a guardrail which are spaced apart by self-locking separator blocks and mounted to base plates. The foot of the running rail fits within channels formed into each of the base plates, with an outward end of the foot secured within the channels by toe plates and an inward end of the foot secured within the channels by inward quick release fasteners. The guardrail is mounted atop the toe plates, outward from the running rail. Side brace plates and outward quick release fasteners are used to hold the guardrail against the separator blocks and on top of the toe plates. Vertical holes are formed into the foot of the guardrail, inward of the guardrail web and in the toe plate. The separator blocks each have a block extension which protrudes downward from the separator blocks through a respective one of the vertical holes in the guardrail foot and into one of the holes in the toe plate.

Abstract: A modular closing resistor assembly can be added in line with the interrupter assemblies of an extra high voltage circuit breaker and has a relatively short length. The resistor element consists of two stacks of disks which are disposed side by side and are electrically connected such that the alternate disks of each stack are connected in series with one another. The operating mechanism of the unit includes a linearly moving roller which engages a crank arm which is in turn pivotally connected to operate the movable closing resistor contact with a motion and with a variable mechanical advantage adapted to cause the resistor contacts to close at high speed just after the interrupter contacts close and to open after the interrupter contacts open.

Abstract: An adjustable switch point guard rail assembly for use adjacent the switch point of a railway switch. The adjustable guard rail assembly is comprised of a plurality of support chairs and an adjustable guard rail. The sdjustable guard rail includes a surface for engaging and laterally urging the wheels of rolling stock in a direction toward the centerline of the trackwork. Also disclosed is an apparatus for laterally adjusting and fastening the wheel engaging surface of the adjustable guard rail to a variety of positions toward or away from the switch point within a given range of lateral movement.

Abstract: An adjustable switch point guard rail assembly for use adjacent the switch point of a railway switch. The adjustable guard rail assembly is comprised of a plurality of support chairs and an adjustable guard rail. The adjustable guard rail includes a surface for engaging and laterally urging the wheels of rolling stock in a direction toward the centerline of the trackwork. Also disclosed is an apparatus for laterally adjusting and fastening the wheel engaging surface of the adjustable guard rail to a variety of positions toward or away from the switch point within a given range of lateral movement.

Abstract: A rail fastener is described comprising a rail plate, a rail seat defined in an upper surface of the rail, rigid rail clips for engaging the flanges of the rail, bolts for securing the rail clips to the plate, a resilient pad mounted underneath the rail seat and extending the full width of the rail plate, and apparatus for securing the plate and pad against lateral movement with respect to the support structure while permitting the plate to move vertically. The plate securing apparatus preferably comprises a plurality of holes in the rail plate and pad, a tube within each hole, and a support plate on which the tube rests. Each tube has a hollow center and each support plate has a hole aligned therewith. A fastening element is driven through each tube and hole to secure the tube to the underlying support structure without contacting the rail plate.

Abstract: A resilient rail fastener assembly for curved tracks includes a unitary base plate adapted to receive a load carrying rail which includes a pair of planar brace plates for maintaining the rail in a vertical orientation and reducing noise and vibration. More particularly, the rail fastener assembly includes a unitary base plate having an upstanding shoulder disposed on one side thereof, and a pair of spaced, planar upstanding brace plates disposed on the other side thereof and formed integrally with the base plate. An elastomeric pad is positioned between the base plate and the bottom of the rail, with the brace plates being disposed transverse to the longitudinal axis of the rail. The upper portion of each brace plate is disposed in abutting relationship with the upper portion of the rail.

Abstract: A railroad track fastener assembly consisting of a spring plate and a resilient seat for a railroad rail comprising a pad of resilient material positioned between the rail base and the base of a spring plate. The spring plate may be bolted to any type of cross tie or foundation of concrete, steel, or wood. The pad of resilient material is formed with a plurality of spaced vertical holes and is either bonded to the base of the spring plate and is freely positioned within the spring plate. The pad is retained within the spring plate by spring shoulder clips that are secured to the spring plate shoulders resiliently checking the upward motion of the rail under a heavy load. Guard rails and braces are provided for maintaining the wheels of rolling stock on the rails while rounding curves.