THE ACME WATER STORAGE SYSTEM.
The apparatus exhibited by the Acme Water Storage & Construction company, in block 44, aisle 9, machinery building, at the St. Louis fair, is intended to make possible the constant supply of water under high pressure—as, for instance, for tall buildings, country residences and small municipal waterworks, displacing water towers or elevated tanks. The system involves the use of two airtight tanks, a pump and an air-compressor. One tank is kept constantly charged with air at a high pressure, while the other contains both air and water, the air being admitted to the second tank from the first by a pressure-reducing valve set to give constant pressure in the second tank, and the water being forced into the tank by a pump. The entire contents of the water tank may be used under a constant pressure without operating either the compressor or pump, and it is necessary to run the latter only at such times as are found convenient for charging the system. As the water is pumped into the water tank, the air is removed by the compressor and returned to the air tank, so that the water pump always operates against a uniform pressure. The apparatus exhibited includes two tanks, each live feet in diameter and ten feet long, and an air compressor and a pump, operated by a single five-horsepower gas engine. The pump is of the Deane vertical, triplex, geared type, and is lifted with four-inch cylinders, the plungers in which have a stroke of six inches. These pumps are designed for a pressure of 100 pounds per square inch and a speed of 47.3 revolutions per minute, the speed of the gas engine being 280 revolutions. This pump is of interest, as it indicates the possibilities of pumping with gas or gasolene engines in isolated places where electric power is not available, or is too expensive, and where the amount or continuity of the service does not warrant the installation of steam pumping apparatus. This type of pumping equipment seems well adapted for all places where the service is intermittent.