Abstract: A railroad coupler assembly having at least a body and a knuckle both formed in a no-bake manufacturing process, the body and the knuckle having dimensional tolerances of distances between features that wear during operation that are about half those obtained from a body and a knuckle manufactured by a green sand process, resulting in increased fatigue life compared to the body and the knuckle manufactured by a green sand process.

Abstract: A railroad coupler assembly having at least a body and a knuckle both formed in a no-bake manufacturing process, the body and the knuckle having dimensional tolerances of distances between features that wear during operation that are about half those obtained from a body and a knuckle manufactured by a green sand process, resulting in increased fatigue life compared to the body and the knuckle manufactured by a green sand process.

Abstract: A railroad car (18) uses a coupling system (10) to couple to other railroad cars. The coupling system includes a coupler (12), a knuckle (14), a knuckle pin (16) and a lock (30). When two railroad cars are coupled to each other, the knuckles of the two railroad cars are engaged and the forces produced during buff and draft movement of the railroad cars are transmitted through the knuckles, the coupler and the locks. Under normal operation, the knuckle pin should experience minimal forces during the buff and draft movement of the railroad cars. However, over time the various components that make up the coupler system may fall out of tolerance due to usage, wear and other factors. As the various components of the coupler system fall out of tolerance, increasing bending forces are applied to the knuckle pin. A knuckle pin with a slot (52) and a hollow body (50) is capable of withstanding bending forces applied to the knuckle pin by out-of-tolerance coupling systems.

Abstract: A railway coupler housing includes a bottom wall section with a thrower hole extending therethrough and spaced from a side wall diverging outwardly from the horn line at the knuckle side of the housing. The side wall continues vertically from the bottom wall section at a rearwardly-spaced relation from the thrower hole along a sufficient height to permit a generally vertical dropping of the thrower within the interior of the coupler head for engaging a trunnion of the thrower in the thrower hole. The thrower in one embodiment has an extended trunnion provided with a diametrically-extending bore to receive a cotter used to retain the thrower in the coupler head. In another embodiment, the end surface of the trunnion includes a tapped hole for receiving a threaded shank of a stop piece. The stop piece includes projecting wing portions that engage with the outer surface of the bottom wall to prevent inadvertent dislodgement of the thrower in the coupler head.

Abstract: A railway car coupler includes a knuckle locked in a closed position and movable into an open position upon opening of the lock and actuation of a thrower arm engaging the knuckle. The thrower arm is configured to limit the shortening of the knuckle opening moment during the knuckle opening movement.

Abstract: In a railway vehicle coupler, the lock includes a leg portion depending from an upper lock body which is solid. The rear part of the upper lock body has a substantially vertical planar surface or stepped planar surfaces across the most rearwardly-extending surface. A beveled and substantially planar rear face or stepped planar rear faces commence at the lower edge of the vertical planar surface and extends downwardly and forwardly to the lock ledge at the guard-arm side of the lock. Above the vertical planar surface, there is a beveled rear surface with or without a step extending downwardly and forwardly from the rear guide at the knuckle side of the lock to the guard-arm side. This surface extends arcuately and commences at the upper edge of the vertical planar surface and extends to the top of the lock.

Abstract: A knuckle type railway car coupler is provided with an improved lock within the coupler head to assure that during a knuckle closing operation the coupler lock will drop from an upper unlocking position to full locking position relative to the knuckle.

Abstract: This invention relates to a railway car coupler of the knuckle type and provides an improvement in the operation of a standard E coupler during a coupling operation. In particular, it concerns the provision of a lock lifter toggle which will assure dropping of the lock to its final locking relation with the coupler knuckle when the knuckle is closed during a coupling operation.