Show modern modem pumping ng efficiency effice ency among the wonders of modern machinery is a reciprocating pump that runs without noticeable jar or vibration it is made by the luitwieler pumping engine company of rochester N Y manufacturers of pl pumping engines and motor fire apparatus it will be noted in our illustration which is taken from a photograph of an actual test that the pump is hung on a chain from a block and tackle arrangement and is not anchored to any base thus allowing perfect freedom of movement in any direction when the picture was taken the pump was running under load at a speed of revolutions per minute under these conditions the vibration was so slight that a five inch wire nail placed upright on its head on the pump base was not t shaken from its position the nall nail is plainly discernible in the illustration standing beside and to the left of the motor this is a double acting triplex pump having three inch cylinders and a three inch stroke it was throwing eighty two gallons per minute through a one and an eighth inch nozzle under a pump pressure of fifty pounds when the picture was 4 45 rl t c ww the luitwieler pump taken the total weight of the machine as shown is 1385 pounds of which the motor accounts for pounds and the pump and motor base the balance these pumps are provided with three cams operating on antifriction anti friction rollers instead of having the ordinary crank there is no break in the water pressure and therefore no need of an air pump for the cams keep the water moving at constant speed A dust proof case around the driving parts serves as the container for a bath of oil the lubricant being splashed over the bearings as in an automobile crankcase the fact that these pumps can be operated from slow speed up to a rate of revolutions per minute shows the uniformity of movement of the stream of water and the smoothness of operation of the working parts merely changing the speed of the motor increases or decreases the quantity of water delivered the advantages of thus being able to handle variable quantities of water need no explanation the luitwieler pumping engine company claims that anis pump has five times the range af pf capacity of other makes 0 of pump s of the same size it is unnecessary to call the readers at to the fad fact that lack of vibration means a minimum of friction nor to the saving thus effected in wear and tear on both motor and pump the motor shown in the illustration is of three horsepower running 1600 revolutions per minute but the pumps are furnished with any size motors up to horsepower |