ated is to enable the heat-giving powers of the gas may both be fully almost always result in the escape of a portion of the load on the valve to be conveniently and instantane- utilized. carbon unconsumed. ously reduced by the engineer as much as may be de- An Expensive Suit fob. Twenty Cents.—Mr.… … the levers, B. The semi-elliptic THE BEST MECHANICAL PAPER IN THE WORLD spring, E, has one end resting SEVENTEENTH YEAR! upon the bar, C, and the other GRAHAM'S SPRING BALANCE FOR SAFETY VALVES. upon the eccentric roller, VOLUME IV.— NEW SERIES. the heat possible from the burning of the gas, all…
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