Abstract: Steering mechanism for trailer wheels is provided with a slide having a tongue selectively engaged with and retracted from the fifth wheel of a tractor. When the tongue is engaged with the fifth wheel, any pivoting of the fifth wheel about the kingpin connection between the tractor and trailer, as when the tractor is steered from a straight ahead position relative to the trailer, causes the tongue to swing a link pivoted on the slide mechanism under the trailer. This swinging of the link drives a flexible cable to control a valve of a power steering system for the trailer rear wheels. The components are mounted under the floor of the trailer and a cable driven winch with a crank or power drive at the side of the trailer advances and retracts the slide to move the tongue into and out of engagement with the tractor fifth wheel. Magnets are mounted in the tongue and a torsion spring is provided in the winch mechanism to maintain tight contact between the tongue and fifth wheel.

Abstract: An apparatus for bending components into exact desired shapes, particularly for straightening bent bolts, crank shafts and the like metal components or work pieces, has an upright frame carrying replaceable fixtures sized and shaped for securing one end of a work piece and tiltably suspending an elongated socket member for receiving the other end of the work piece. An upright straightening arm or lever is fulcrumed on the frame through a ball and socket joint and linked to the socket member for tilting the member in a direction controlled by the lever to thereby bend the work piece back into the desired alignment. A high mechanical advantage ratio is obtained through a long lever arm on one side of the fulcrum, a short lever arm on the opposite side of the fulcrum and the length of the suspended socket member propelled at one end by the short lever arm and receiving the work piece at the opposite end.