Abstract: The device for compressing a load of particulate material in an open-top trailer includes a frame mounted or mountable on a support so as to be elevated over the load of particulate material in the open-top trailer, a drum roller rotatably mounted or mountable to the frame, and a windrower mounted or mountable to the frame adjacent the drum roller. The windrower is for windrowing a heaped portion of the load of particulate material so as to heap the heaped portion above upper edges of sides of the trailer. The windrower windrows the heaped portion into a windrow of particulate material generally centrally aligned with a longitudinal axis of the trailer as the trailer and the windrower are translated relative to one another along the longitudinal axis. The drum roller is disposed on the frame so as to roll over and thereby compress the windrow of particulate material as the trailer and the roller translate relative to one another along the longitudinal axis.

Abstract: The device for compressing a load of particulate material in an open-top trailer includes a frame mounted or mountable on a support so as to be elevated over the load of particulate material in the open-top trailer, a drum roller rotatably mounted or mountable to the frame, and a windrower mounted or mountable to the frame adjacent the drum roller. The windrower is for windrowing a heaped portion of the load of particulate material so as to heap the heaped portion above upper edges of sides of the trailer. The windrower windrows the heaped portion into a windrow of particulate material generally centrally aligned with a longitudinal axis of the trailer as the trailer and the windrower are translated relative to one another along the longitudinal axis. The drum roller is disposed on the frame so as to roll over and thereby compress the windrow of particulate material as the trailer and the roller translate relative to one another along the longitudinal axis.

Abstract: A flexible cover is rolled from a second longitudinal edge of a trailer opening, over spanning members, and any load held in the trailer, to an opposite first longitudinal edge. A harness, which may be a "V"-shaped pair of ropes, is mounted to a mid-point along a longitudinal free edge of the flexible cover. The opposite edge of the flexible cover is fixed to the first longitudinal edge of the trailer. The harness is sized so as to be positionable laterally from the second longitudinal edge to the first longitudinal edge of the flexible cover, across, so as to lay on and extend laterally from, an upper surface of the flexible cover when the flexible cover is unrolled so as to be deployed across the trailer opening. When the flexible cover is rolled-up the harness is correspondingly rolled-up in contact with the upper surface of the flexible cover in the storage position.