Abstract: A machine for cleaning a grate over dairy barn manure troughs uses a rotating cylindrical brush with dense, fibrous, resilient bristles to scrub manure from the grate. The cylindrical brush is mounted in a housing which rides on a pair of wheels. The cleaner is moved forward and backward by the contact of the rotating brush through the barn floor. An electric motor drives the brush through a chain drive. A pair of flexible protective flaps mounted in front and behind the rotating brush prevent splashing of manure. Water nozzles are mounted on the front end and rear end of the machine for spraying the grate. A nozzle is also mounted inside of the housing for spraying the brush as it rotates. A handle extends from the rear of the machine and is offset to the walkway side wall of the machine to keep the operator away from kicking animals. The animal stall side wall of the machine is strengthened to withstand kicks.

Abstract: A "roll over" type vehicle wash apparatus includes a frame which is movable on a track and which is driven between a front end and a rear end of the track. The apparatus includes a pair of front arms and a pair of rear arms which are pivotally connected to the frame. Side wrap brushes are rotatably connected to each of the front and rear arms and are rotated about vertical axes. Positioned proximate the rear end of the track are arm deflectors which cause the rear arms to be driven inward toward one another as the frame approaches the rear end. This prevents the rear arms of the apparatus from being accidentally driven through doors at the ends of the bay area in the event of a failure of the actuators of the rear arms.

Abstract: A "roll over" type vehicle wash apparatus includes a frame which is movable on a track and which is driven between a front end and a rear end of the track. The apparatus includes a pair of front arms and a pair of rear arms which are pivotally connected to the frame. Side wrap brushes are rotatably connected to each of the front and rear arms and are rotated about vertical axes. A control circuit for automatically controlling operation of the apparatus includes five sequence control relays, FRONT IN and REAR IN switches for sensing side wrap brush position, a TOP BRUSH DOWN switch for sensing top brush position, and a HOME TRAVEL switch for sensing frame position on the track. The control circuit prevents both the front and rear arms from being fully in at the same time, thereby preventing a dangerous condition from occurring when very short vehicles are being washed.