Abstract: A flexible sewer hose is supported in a trough made of rigid sections. Pairs of supporting members are tied together by resilient means to provide an upper diverging clamping portion and a lower pair of diverging legs. The upper clamping portion securely fastens the legs to the trough and when the clamping portion is positioned about overlapping sections of trough, securely holds the sections together to function as a single trough. The supporting members are easily attached by snapping upper inwardly turned ends over upper edges of the trough, are easily disassembled, and fit together for compact storage.

Abstract: A portion of a hitch secured to the bed of a truck is flat so that when the hitch is not being used the hitch will not interfere with usual loading. A base is secured to the bed of a truck, and lateral spacing bars rigidly support a hold-down plate a short distance above the base. A removable, interchangeable portion connected to a goose-neck arm has a disk to be contained for rotation while the hitch is coupled, laterally between the spacing bars and vertically between the hold-down plate and the base. The peripheral edge of the disk guides it between the spacing bars to center the portions being coupled. The interchangeable portion adapts different types of couplings of connecting arms to the portion attached to the truck. Preferably, a disk or a plate is connected to the lower disk and spaced over the upper surface of the hold-down plate.