Abstract: A grooved rail core piece including a core piece intersection area formed by intersecting grooves as an overflow area. The core piece has two construction profiles with interconnected outer fishing surfaces (22,24) extending in a longitudinal direction. In order to enable the intersection area of the core piece to be renewed in a simple manner, the intersection-point area of the core piece includes an interchangeable insert (36) which is arranged in a recess in an at least positive fit, the recess being defined by the sections of the construction profiles and by the sections of the lining parts (30,32) disposed in the outer fishing surfaces (22, 24), and the insert is fixed by means of at least two wedge elements (38, 40) which can be clamped in the lining parts. The lining parts and the construction profiles are connected by means of at least one clamping element protruding there through in a non-positive fit.

Abstract: A direct support type of rigid railbound railroad trackwork frog assembly is provided with a core frog casting, a pair of compliant, non-metallic spacer elements contacting laterally opposed sides of the core frog casting, a pair of wing rails respectively contacting the compliant, non-metallic spacer elements, and a threaded bolt and nut fastener joining the casting, spacer elements, and wing rails into a rigid unitary structure.

Abstract: Rail construction including laterally adjacent frog sections with guard rails outwardly spaced to each side thereof by interposed liners. The components are interconnected by a transverse tightened bolt with vertical misalignment precluded by either nesting projections on adjacent abutting faces of the components or by a rigid, preformed sleeve press-fit within the bore receiving the bolt, the sleeve extending through the frog sections and at least partially through the liners.

Abstract: A direct support railbound frog having a frog casting clamped between a pair of wing rails and freestanding such that all wheel loads imposed on the frog casting primarily pass directly to the bottom surface of the casting without passing through the wing rails.

Abstract: An improved railroad turnout frog with a continuous running surface is provided. The frog provides for continuous running of the rolling stock and includes a mobile point with a triangular shape. The mobile point is located in a portion of the frog which would be void and otherwise provide no structural support.