Abstract: An equipment trailer, and more particularly a trailer adapted for hauling large boats and similar objects which has self-lifting framework, is adjustable in lateral width so that it can be used for hauling wide loads, and may be converted to a narrower width for empty transport merely by operation of a hydraulic cylinder that operates through linkages to cause the side rails to be moved in or out relative to a central axis. The unit includes removable cross members and specifically designed removable hangers for such cross members that are attachable to the longitudinal side frame members when the unit is to be used, and which are quickly attached and detached from the side frame members.

Abstract: .Iadd.A device for removing cores of soil from the ground including a drum member rotatably mounted on a frame. The frame is adapted for attachment to a vehicle to pull the drum over the ground. The drum has an internal chamber with an access door and a plurality of hollow soil probes mounted on the drum to remove cores of soil from the ground for collection inside the drum as the drum is pulled over the ground by the vehicle. A power cylinder is provided for raising and lowering the frame to thereby cause the drum to move into and out of engagement with the ground. .Iaddend.