Abstract: An elongated emergency escape rope, extending from an elevated position to the surface of the earth, is helically wound through guides on the legs of a U-shaped tubular frame having its legs horizontally disposed in a vertical plane in a manner to permit controlled descent of the frame when in operation. A leg harness, having thigh engaging loops, is connected at its respective end portions to respective ends of the upper frame leg and a waist support rope is affixed at one end to the upper frame leg and adjustably secured at its other end to the other end of the frame leg for holding a person safely to this device when suspended during an escape.

Abstract: A fluid containing insulated tank is mounted on a vehicle chassis having an engine driving a hydraulic system and an electric energy generating unit. The roadway cleaning apparatus, including housing contained screw conveyors, is mounted transversely of the forward end of the vehicle chassis for discharging snow and roadway debris through discharge tubes into the tank through an inlet port opened and closed by a hydraulically operated inlet port opening and closing door. Electric resistance heaters, contained by the tank and mounted thereon, melts snow and heats fluid and air contained by the tank. An agitator within the tank forms a slurry of the contents.