Abstract: A coupling head housing of a central buffer coupling for rail vehicles, especially low-platform vehicles, with a lock with rotatable disk-type hook and articulated coupling ring, which is located retracted inside the centering projection when the coupling is not in use, and with a funnel for receiving the centering projection of an opposite coupling head of the same design. Offsets in height and lateral offsets, but even angular offsets are to be compensated prior to the coupling process. Accordingly, the front part, which combines a compact design with the known advantages of older coupling designs for the largest possible gripping range, within which a coupling process can still be initiated as intended when the coupling head housings are axially offset in relation to one another and it can be concluded after the adjustment to one another.

Abstract: A hook-type railroad car coupling includes a hook vertically centered and laterally offset in a pocket opening in the front face and a guide pin and hole at opposite top corners. At one side of the bottom a guide horn extends beyond the hook, the front plate having an opening beside the horn and below the hook. A guide wedge is inside the opening to contact the horn of the mating head and improve the parallelism of the front faces of the heads as they come together.

Abstract: A Willison rigid jaw coupler with a locksetting pawl for interlockingly engaging the locklifting lever, when the lock is in lockset, is described. A special fulcrumming of the pawl is provided to cause disengagement of the pawl from the lever to allow the lock to return from lockset to the locked position.

Abstract: A rigid jaw-type coupler having a locksetting mechanism which can be easily tripped to restore the lock from a lockset position back to a locked position. The mechanism comprises a lock operating lever which is provided with a projecting lug that is designed to slidably engage and override a specially contoured cam which is carried by a pawl for holding the lever and lock in a lockset position.

Abstract: In a car coupler of the rigid-jawed type, aligning means is provided for substantially increasing the gathering range of the coupler in both lateral and angular directions during coupling operations. In addition, the coupler is provided with anti-telescoping protection in a vertical direction between two coupled couplers.