Abstract: A self contained portable device for use on the roof of a building for retrieving a lifeline from along the side of the building. A motor and drum drive assembly is mounted on a movable cart. An adjustable davit arm is pivotally mounted on the cart and is adapted to extend over the edge of the roof. The lifeline extends around a sheave mounted on the outer end of the davit arm and through a rope grab clamp and then about the take-up drum of the drive assembly. The davit arm is formed by telescopically joined tubular arm sections. The motor is controlled by a foot operated switch for rotating the drum to retrieve the lifeline. A safety line is adapted to secure the cart to rigid structure on the roof in addition to a wheel brake.

Abstract: A fire extinguishing apparatus (A) actuated either manually or automatically for dispensing a stream of pressurized fire extinguishing fluid (F) in a preferred pattern. The apparatus includes a storage tank (10) for the extinguishing medium which is operably connected with a discharge nozzle assembly (14). A conventional flexible dip tube (30) is secured within the tank in a novel manner to insure complete discharge of the tank contents which is preferably selected from various Halon agents. The discharge nozzle assembly (14) is sealed by a closure member (40) which is held in the discharge blocking position by a temperature sensitive bulb (38) and a leaf spring (36). Operation of the temperature sensitive bulb (38) enables automatic extinguisher operation which manual actuation removes the leaf spring. Either actuation releases the closure member to effect operation. The extinguishing fluid is released through slots (34d) on the sides of the nozzle (34).