EFFECTIVE WORK OF A CHEMICAL NOZZLE
Sometime ago, when this nozzle was tested in Manhattan, with considerable success, a description of its construction was given. Since that time it has been pushed, so that it may now be seen in a number of fire departments, especially in the West. Henry Sieben, the general manager of the company controling the nozzle, recently made an extensive trip, including the large cities of the Pacific slope, and the exhibitions he has given are repetitions of that made in New York, so far as the satisfactory operation of the appliance goes; but, for the information of those not acquainted with it, some further data and illustrations of its operation are given herewith. In the centre of the nozzle is a chamber that holds a cylinder containing the chemical. The pressure is furnished from the ordinary fireplug, and, as shown in the illustration, the small hose that operates the nozzle is connected to a length of regular 2%|-in. hose, and this furnishes ample power to throw a stream any reasonable distance. At Seattle, Wash., a very successful test was recently given, and the four views shown are sufficiently explanatory as to the very perfect work performed at that time. In describing that test Chief Harry W. Bringhurst says: “I witnessed an exhibition test of the Sieben chemical nozzle, near First avenue south and Holgate street in this city. A frame structure had been built 15 ft. wide. 16 ft. high and 7 ft. deep, open front and without a roof. The lower half was filled with tight wood racked; the upper, with boxes, barrels and kegs, both halves mixed with paper and excelsior and thoroughly saturated with coal oil. When ignited, the fire was furious. On word given by me, when the wood was burning, Mr. Sieben easily put out the fire with the chemical stream from bis nozzle in thirty seconds. Later it was only after repeated efforts and with much difficulty, that the wood could be made to catch fire again. I regard the test as very successful and would say that the chemical nozzle showed itself to be a most efficient extinguisher.” Several chemical charges may be inserted in the nozzle chamber, so that a continuous stream may be played on a fire whenever it may be necessary. The illustrations show the building as it was constructed and the material used therein. Another view is that of the structure in flames a few seconds before the order was given to extinguish the fire. A third view shows the nozzle in action, with Chief Bringhurst in the foreground taking notes on the efficiency of the chemical stream action on the fire. The effect of the chemical stream, thirty seconds after the order was given to extinguish the flames, proves the efficiency of the operation, while the view of the salvage, after the material in the building had been reignited and saturated with kerosene oil a second time, is a convincing proof of the genuineness of its make-up.