The Locomotive Of Today

43 The Boiler: Safety Valves. balance types and the direct loaded. In the valve curved lever was introduced, so arranged t spring- lifted the joint of the lever, where connechon wh the^p was made, approached the fulcrum, thus ten g load constant. On the German railways, where a sp^ balance is used, a jointed connec ion moj|^cation of the springs, which are here in compression, and a l endosc casinfs. The valves themselves are of a pecu har design, they are double, with a sliding cone and a piped in distance into the boiler, this is open at the lower end, ^an free communication with the boil I • ’ pressure i <-!->« vnh'p qpatine’. When the steam prc^uic mternal cone is the \ alve seau g valves by its action rises higher than that reqmred,14 llfts val Qf. yalve> through the mternal pipe on the und • seatinff; regularly.^ anQther valve designed to over- äst- “s s?= than other spring loaded valves. I he Part^u steam, s ä ää:aas »ää surrounds it, and takes a seat on the cæ ~ s , area on which the steam pressure can the boiler. A lift suddenly, and instantaneously reliex , nrovision of a exääsä ““r'cis