. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . stration makes clear thegeneral form of its construction. Itconsists of a V-shaped trough lyinground the throttle valve something inthe form of the letter U. The endsof the trough have webs across sothat the only way in which foamywater can get into the trough is tosplash over the edges. At the bottomof the V-shaped trough and cast onas a part of it, it is a 2-inch pipe, andat the sharp angle of the V at thebottom there is a series of holesplaced at intervals all along, so thatwhatever water
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . stration makes clear thegeneral form of its construction. Itconsists of a V-shaped trough lyinground the throttle valve something inthe form of the letter U. The endsof the trough have webs across sothat the only way in which foamywater can get into the trough is tosplash over the edges. At the bottomof the V-shaped trough and cast onas a part of it, it is a 2-inch pipe, andat the sharp angle of the V at thebottom there is a series of holesplaced at intervals all along, so thatwhatever water splashes over theedges of the trough will drain intothe 2-inch pipe which forms the baseof the casting. The whole thing hangs on slingsfrom the dome course and the heightcan be regulated to suit illustration shows it placed so thatthe top of the trough is just even withthe water level in the boiler when thatis at the normal level opposite thecentre gauge cock. The cast iron pipeat the bottom of the trough is in com- side. The trough itselfwide and 6yi ins. high. is 4^i skim-. BLOW-OFF VALVE,mer is made in two pieces and the semi-circular end is placed around thethrottle standpipe and the straightends of the trough extend toward the expansion in washing, which it is diffi ever necessary. The blow-off valvecomplete is of brass with the exceptionof the lever, which is made of eithermalleable iron or cast steel. The valve;in(l valve-stem are cast in one piece,the part above the seat having fourwings which fit into a projection ofthe nut, thus forming a guide for theupper part, and the stem proper passesthrough the valve body, thus insuring-the proper seating of the valve. Apocket is cored in the valve ot re-ceive a spring made of /s-in. Germansilver w^re, I inch in diameter and 4ins. high. Tlie application of thisspring makes it impossible for thevalve to remain open when the leveris released. It will readily be seenthat this valve can be operated on
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
