Abstract: Converter means for converting a side marker light for a vehicle such as a trailer to a combination side marker and clearance light comprises an adapter assembly for repositioning the ligh bulb and a multi-sided translucent lens for replacing the original flat lens of the side marker light.

Abstract: Apparatus for locking a coupling socket member in engagement with a mating ball member is disclosed. A ball retainer member is located within the coupling socket member and is movable from a lowered release position to a raised locked position. The ball retainer member is in engagement with the ball member in its raised position to lock the ball member to the coupling socket member. A latch bolt has a lower portion engaged with the ball retainer member and an upper portion which projects upwardly through an aperture in the coupling socket member. The upper end of the latch bolt has a notch formed therein. A cam lever overlies the aperture in the coupling socket member and has a pivot end pivotably attached to the latch bolt and an opposite free end. When the cam lever is pivoted from its release position to its locking position, it raises the bolt to move the ball retainer member from its lower release position to its raised locking position.

Abstract: A jack for supporting and adjusting the elevation of a trailer tongue comprises a ground support post, having either a caster wheel or foot plate at its lower end, extending downwardly through a jack mechanism housing which is bolted to the trailer tongue. The post can be raised or lowered either by means of a rotatable crank extending from the housing or, alternately, after manual release of latching means in the housing and tilting of the crank, by manually sliding the post. The post has a toothed rack affixed along one side thereof. The mechanism in the housing comprises a pivotally movable support member on which a crank-driven worm and an intermeshing worm gear are rotatably mounted. The support member is spring biased and releasably latched into an upward position wherein the worm gear engages the rack (and functions as a pinion gear) and manual rotation of the crank is necessary to move the post up or down.