(under subclass 400) Devices having means designed to lessen the labor involved in effecting a connection or disconnection between the vehicles.
(1) Note. Coupling parts which merely automatically connect upon contact or relative movement or which may be disconnected merely by operation from a remote point are not included in this or indented subclasses.
(2) Note. The provision of means in addition to the coupling elements to guide coupling elements into engaging relation upon relative movement of the vehicle is included here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
475, for a draft member provided with retractable means to support the vehicle on the ground when not coupled to another vehicle.
504+, for couplings, per se, especially subclasses 508+ for self-coupling devices. See (1) Note.
SEE OR SEARCH CLASS 172, Earth Working,
272+, for an earth working implement with means to facilitate mounting of the implement on a motor vehicle.
