THE BEST IS THE CHEAPEST.
Among the modern improvements in stop-cocks for underground use there is none so important as that of the Inverted Key Curb Cocks which will, no doubt, eventually displace all other classes of goods for underground work. The principle of the key or plug being placed just opposite from that of the ordinary cock, the carefui grinding of the plug, and the arrangement of the by-pass, the patent cap to prevent the sand and dirt from working round the plug, and the quality of brass that enters into its construction are the practical points which enter into the manufacture of the H. M. Inverted Key CurbCock manufactured by the H. Mueller Manufacturing Company, of Decatur, Ill., The fact will be readily admitted that the key or plug in an ordinary curb-cock will oftentimes become very stiff and hard to turn, while with the Inverted Key Cock a slight downward pressure on the plug tends to loosen it and prevents any binding or sticking. There is no chance for leakage, as the watei enters the by-pass on the pressure side, passes under the plug, and is constantly forcing it upwards, so that the higher the pressure, the less tendency there is to leakage. The H. M. Inverted Key Curb Cock is provided with the H. M. patent cap which, with square two inside lugs and lug on body of cock, forms a strong and substantial check that cannot be twisted or broken, and the operator, when, opening or closing, always knows when the cock is fully open or fully closed. This cap atso prevents any dirt, grit, or sand working in round the plug—this being a very careful point for consideration in making purchases. Manufacturers state that these goods are made in many different patterns and can furnish almost any pattern wanted from stock.