A gooseneck trailer having rear wheels and a deck for carrying a load includes a gooseneck supported at the front end of the deck for swinging movement between a towing position, abutting the deck front end, in which the gooseneck may be coupled to a tractor, and an open position, to facilitate front loading or unloading. In one embodiment a lever may be extended from the gooseneck to enable it to be swung manually between towing and open positions. In other embodiments the trailer includes a double acting cylinder and a control circuit for selectively applying pressurized fluid to the cylinder to swing the gooseneck between the two positions.

A steerable three-wheeled cart has a frame supported by a pair on non-steerable rear wheels and a steerable front wheel. The front wheel is mounted on a steerable wheel carriage that is journaled to the frame for rotation of the carriage and wheel about a generally vertical axis. A handle is pivoted to the wheel carriage to effect steering of the front wheel. The handle mounts a braking member whose braking surface is curved both longitudinally and laterally so as to conform substantially to the curvature of the front wheel. A braking force is applied to the front wheel by rocking the handle downwardly to cause the braking member to bear against the wheel while retaining the ability to steer the wheel with the handle.

A trailer hitch has a ball coupler mounted on a trailer tongue positioner attached to a trailer tongue. The positioner has a head fastened to the coupler and side arms extended downwardly from the head. Each side arm has a pair of vertical rows of holes. Fasteners extended through selected holes connect the side arms to opposite sides of the trailer tongue to locate the trailer tongue in a position to maintain a downward load on the trailer hitch.

A portable dolly for use in towing a tractor including at least one wheel for moving the dolly, a king pin configured for placement in a mating engagement with a fifth wheel on the tractor, and a plurality of chains for connecting the dolly to the tractor, wherein the dolly is configured to assist a wrecker with towing the tractor from the tractor's front end without removing the front drive axle and drive shaft on the tractor. A lift mechanism is provided for lifting the tractor off the ground into a position that is suitable for towing.

A new and simple hitch assembly comprising a vertically adjustable bar (vertical bar) secured within a mounting sleeve which in turn is securely attached to a hitch bar. A vertical securing pin releasably engages the vertical bar and is maintained in place by a spring, the pin and spring comprising the vertical securing mechanism. The hitch assembly mates with standard hitch receivers such that the relative height of a hitch ball may be varied. The hitch assembly is easy to manufacture and is durable, strong, and stable during towing. Such a hitch assembly is of simple design and has few movable parts. Such a hitch assembly is also compact and has a large range of height adjustment as it is mountable in alternative vertical orientations. The vertical bar has a series of holes in which the vertical securing pin is engaged.