Abstract: The present invention relates to a trailer having a load-bearing platform moveable between a ground-level loading position and a horizontal travel position supported on a U-shaped support frame, and having its wheels mounted on stub axles rather than a common axle. The stub axles are cantilevered on the support frame with suspension arms to keep the wheels in proper alignment with the support frame. The load-bearing platform is raised and lowered by a pivoting lever member, hinged at its rear end to the rear end of the platform, together with a block and tackle system which controls the lever member and raises and lowers the front end of the load platform.

Abstract: A combination staple gun and tacker is provided which takes the place of two separate tools for stapling and cutting fiberglass tape used to tape various seams between sections of air-conditioning ductwork. Also provided is an improved method of of stapling and cutting fiberglass tape required to seal junctions of ductwork, employing the combination staple gun and tacker to staple the tape required on ductwork seams and to cut away the excess tape without tearing loose the newly-installed staples.