Abstract: A boat trailer comprising two side beams positioned adjacent to each other, wherein each of the side beams has a forward tongue forming portion converging toward the other side beam. The side beams can be connected to a towing vehicle and the side beams may also have a trailing boat-supporting portion. The trailer also includes at least one cross bar member extending between the boat-supporting portion of one of the side beams and the boat-supporting portion of the other side beam. The various members of the trailer may be punched with holes in a standard pattern.

Abstract: A device to which may be attached plates to be welded along a common corner line edge and a welding torch driven by a lead screw such that the plates are fuze welded together beginning and ending at arbitrary preset locations.