Abstract: An apparatus for use in foam-type fire-fighting equipment in which a halogenated hydrocarbon (halogen), preferably trifluorobromomethane, CF.sub.3 Br, is injected into the fire extinguishing agent to improve the efficiency thereof. In several embodiments in which a foam nozzle or a foam generator is employed, the halogen is metered at a prescribed rate into the foam or foam liquid to entrain halogen into the bubbles of the foam such that the bursting of the bubbles due to the effects of the fire release the halogen to act on the fire. In further embodiments, a foam for fighting fires is produced with a plain hose nozzle by injecting the halogen into the fire extinguishing agent, the bubbles of the foam having halogen entrained therein that is released when the foam is used to blanket a fire.

Abstract: A braking system for a reel for a hose used to dispense fluids. The reel end of the hose is provided with a fluid connection on the reel itself and a supply line for the fluid is connected into the reel such that a flow can be established through the hose even though hose is still wound on the reel. A brake with actuating means is provided for the reel. Various types of brakes such as a caliper-disc type, a band and drum type, or a double-shoe type can be used. Brake actuation is by means of a pressurized hydraulic or pneumatic fluid or by an electrically operated solenoid. A flow sensor is incorporated in the fluid supply line to the hose and the output of the sensor is used to enable the brake actuator to brake the reel. In this system, when the flow sensor detects a flow through the hose, the sensor produces an output signal which is used to cause the actuation of the reel brake.