. Locomotive engineering : a practical journal of railway motive power and rolling stock . ng. Secondly, when the metal runs,it acts as a lubricant and prevents seizurefor a while; for evidently the brass can-not seize the pin so long as a layer of thisfluid metal is interposed. When this is allthrown out the trouble begins. An engi-neers nose is usually his sentinel in suchcases, but often the fir>t intimation comes from the white metal, which by givingtimely warning enables him to avert thecatastrophe. When the threepenny bitsbegin to fly, the runner knows it is timeto think about giving
. Locomotive engineering : a practical journal of railway motive power and rolling stock . ng. Secondly, when the metal runs,it acts as a lubricant and prevents seizurefor a while; for evidently the brass can-not seize the pin so long as a layer of thisfluid metal is interposed. When this is allthrown out the trouble begins. An engi-neers nose is usually his sentinel in suchcases, but often the fir>t intimation comes from the white metal, which by givingtimely warning enables him to avert thecatastrophe. When the threepenny bitsbegin to fly, the runner knows it is timeto think about giving up his train. It isno use trifling with a hot main pin, espe-cially if the engine is inside such a case the driver would have ahole knocked through his boiler or hisfirebox front before he knew where hewas. So much for the safety gained bythe use of Babbitt, and. in fact, all bearingalloys. i i @ A New Blow-off Valve. The Lunkcniicimer Company, of Cin-cinnati, Ohio, are about putting on themarket a new blow-off valve. As will beseen from the cut, the disk is solid and fits. NEW BLOW-OFF the barrel closely, to prevent scale orsediment lodging on top of disk. The disk is reversible, having a seat oneach face. These seats are of babbitt,dovetailed in as shown, so they can beeasily renewed. The brass seat ring canalso be easily renewed. They are usuallymade with an iron body, but for marineuse bronze is used. They are also madeeither screw or flange end as desired. Fur-ther details can be obtained from themakers. i @ i \V. D. Sargent, president of the Inter-national Brake Shoe Company, left thisweek for Europe to make arrangementsfor the manufacture oi the Diamond Sshoe in several European countries, in-cluding Russia. The success of this shoesince its introduction last fall has beenlittle short of phenomenal, and we doubtif any railway device of recent inventionhas been so thoroughly and consistentlypushed on all occasions as this 4fl8 LOCOMOTIVE E
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