Abstract: An improved rotary-type F Car Coupler. The yoke of the coupler is provided with the side opening through which the pin for holding the shank of the coupler head to the yoke is removed. A plate is provided for covering the side opening and retaining the pin in position between the shank and yoke. The retainer plate is rotated into interlocking engagement with the yoke, and a cotter pin and stop are provided for restricting rotation of the plate to maintain it in interlock relation with the yoke.

Abstract: A high momentum industrial gas burner designed to create a high velocity which, in turn, is capable of creating high wind circulation that can be maintained during burner turndown. The various chambers of the burner are specially designed, so that fluid pressure within the burner is less than atmospheric pressure, or the fluid pressure within the heating chamber of a furnace wherein the burner is used to heat, for example, air.

Abstract: A locking mechanism for a pair of hopper doors which are laterally spaced side-by-side transversely of a railroad hopper car. A specially designed locking pawl is provided for retaining the cams in interlocked relation with the hooks of the locking mechanism. The pawl is so designed that a single operator standing by the side of a hopper car, can operate both hopper doors which are mounted together for unitary rotation.

Abstract: A railroad car coupler having a chambered head on which is mounted a knuckle that is rotatable between a closed position and an open position. A lock is provided within a chamber of the head to maintain the knuckle in a closed position. The lock is movable to a lockset position where the knuckle is free to rotate to an open position. A lever having projecting trunion for engaging the lock and around which the lock rotates, is also movable within the chamber for rotating the lock to the lockset position. The lever is provided with a projecting lug adjacent the trunion. The lug is designed to cooperate with a ledge, formed within the head, to limit axial movement of the trunion to prevent the trunion from becoming disengaged from the lock.

Abstract: A system for controlling the speed of a direct current motor. The system employs a pair of breaker points for opening and closing the circuit containing the motor. By varying the frequency of contact between the breaker points and the period of time the points are in contact, different pulsations of current are transmitted to the motor to regulate its speed.