Abstract: A self securing theft proof chain binder, such as would be used to cinch a chain tightly holding a cargo to a truck flatbed. The binder has hooks on either of its ends to attach to the ends of the chain overlapping the cargo and the binder is pivoted in the middle so that when it has been squeezed together it tightly draws together the two ends of the chain. The lever arm on the binder has a projecting spur with a notched tooth thereon which in turn mates with a lock on the other half of the binder so that when the two halves are squeezed together they lock in place.

Abstract: A door lock, such as would be used on truck bodies to securely fasten the big rear doors, or which is easily opened to remove merchandise stored in the truck. A locking rod runs vertically the length of the door, with a pivotable handle attached at a reachable height from the bottom, the handle being raised to clear the lock, and then rotated a quarter to half revolution, to thereby rotate the locking rod and free it from hasps at top and bottom of the rod. A spur extends out from the handle and has a series of stepped shoulders which progressively enter the lock to secure the handle against movement when desired.

Abstract: A truck bumper attachment for use with wideload signs, having spring urged telescoping C-clamps for fastening onto the truck bumper and also telescoping supports for the sign so as to be useful with a plurality of sign sizes.

Abstract: A locking load binder having a conical lock tongue mounted on the handle and a keeper link secured to the yoke on one side of the handle and adapted to cooperate with the lock tongue to secure the handle thereto. The lock tongue includes cam driven locking balls which cooperate with the keeper link.

Abstract: A self securing theft proof chain binder, such as would be used to tightly cinch a chain tightly holding a cargo to a truck flat bed. The binder has hooks on either of its ends to attach to the ends of the chain overlapping the cargo and the binder is pivoted in the middle so that when it has been squeezed together it tightly draws together the two ends of the chain. The lever arm on the binder has projecting spur with notch teeth therein which in turn mates with a lock on the other half of the binder so that when the two halves are squeezed together they lock in place.