THE GORTER WATER TOWER.
The Gorter metallic, telescopic water tower is the invention of Capt. H. H. Gorter, of the fire department of San Francisco, Cal., and is in use in that department. It is claimed for this new tower that it is the highest in successful use in the world. When fully extended, it is seventy-six feet from base to centre of nozzle point. No hose is used in the extension or anywhere else in its construction. Its eight three-inch inlets (four on each side) lead into a receiver surmounted by an air-chamber, winch minimises the pump pulsation. This receiver supplies the tower proper and the deck stream by a five-inch pipe and gate, either of which or both can be used at will. The nozzle tip on the tower is two and onefourth-inch; the deck stream has four tips three-inch to two and one-fourth inch. A water motor raises the tower mast and its extension, one man having complete control over the whole operation. The tower being telescopic and with no hose to interfere, the extension can be raised or lowered at any time while delivering a stream under any pressure. It can swing through an arc of thirty-five degrees each way of the perpendicular, and can thus cover the whole frontage of a building of seventy-five feet or more, without moving the truck, thereby delivering a stream into any window in range rigid through to the rear without turning the nozzle or deflecting the stream by contact with a side wall. The tower is also perfectly self-sustaining and vertical under all pressures, the force exerted by hack pressure from the nozzle being entirely taken up by a specially constructed strut. The tower works on a ball and socket joint, and is moved by a worm-geared segment and worm, easily operated from below under all pressures, and traveling through an are of 100 degrees from away below horizontal to almost vertical, and throwing an unbroken stream for too feet. The tower is got ready for action in fifty seconds after arriving at the scene of the fire, and carries a crew of four men, including captain, driver, and hosemen. It weighs about five and three-quarter tons, and is drawn by three horses. Its wheels have now been fitted with rubber tires. The inventor has also just completed a sixty-foot tower built on the same principles.