INTERESTING EXPERIMENTS.

INTERESTING EXPERIMENTS.

On Thursday of last week, a series of experiments was made under direction of the Fire Commissioners to ascertain what can be done in the way of obtaining large streams for fire purposes. Mr. Andrew J. Morse, of Boston, came over to exhibit his Monitor Nozzle, and for the purpose of testing it the Fire Boat Havemeyer was ordered to the dock at the foot of Seventeenth street, where there is every facility for making tests of apparatus. Recently the Commissioners have had 3 1/4-inch outlets made to the pumps of the Fire Boat, and have also equipped her with 600 feet of 3-1/4 inch hose, in obedience to the demand for large streams, regarding which THE JOURNAL has had so much to say during the past two years. This large hose had never been tested, so the trial of the Monitor Nozzle WMS made the occasion for making various tests with the large hose.

我他监视喷嘴,事实上,三方新航mese, the outlet of which is a short pipe leading up to a ball joint, in which is an opening into the play-pipe. A lever attached to this ball-joint enables one man to control the most powerful stream, and direct it to any point of the compass. This nozzle is, as yet, experimental, and Mr. Morse has made the mistake of making his Siamese too small ; the water ways of the apparatus are too contracted, so that when the supply of water is liberal, the nozzle gets choked, and the stream sprays considerably in consequence. Mr. Morse was aware of this difficulty, and therefore made no attempt at distance throwing, contenting himself with showing how easily the largest stream could be controlled by his nozzle. So far the exhibition was eminently successful, and all present were pleased with it. In future, Mr. Morse will make larger water-ways for his apparatus, and do away with some of the obstructions to the free passage of water that it now presents. These are faults which could only be discovered by actual test, and are easily remedied. We may say here that we never yet saw a Siamese connection that was large enough. They should be so large as to form a small reservoir, into which great volumes of water can be forced and discharged without creating a great I disturbance. The more free and easy a stream passes from the pumps to the nozzle the better are the results obtained, and the nearer to the nozzle a large body of water is maintained, the more easily does the apparatus do its work. The Monitor Nozzle was first tested with three 200-feet lines of 2-inch hose leading into the Siamese, and discharging through nozzles of various’sizes ; then two 200-feet lines of 3X-hose were attached, and the results were all in favor of the larger hose. The loss by friction in the hose—as shown by the difference between the gauge at the pumps of the Fire Boat, and the gauge in the Siamese— was very much less than in the 2 1/2-inch hose ; consequently, the power of the Engine was utilized in projecting the stream to a greater distance beyond the nozzle. Elsewhere we print the official report of all the tests made, and these will be found highly instructive.