. Canadian transportation & distribution management. condensation drainedthrough M in. opening at the centre. The arrangement of lugs for the sus-pension of the hopper bottom with thecentre of gravity of the bottom set out ofthe vertical line of the point of suspension,creates a tendency for the hopper bottomto remain closed, and this tendency is fur-ther augmented by the additional weighton the bottom, and the counterbalance onthe operating shaft. The operating ar-rangement is quite simple, and is shownquite clearly in fig. 5. Cross rods throughthe front angle of the swing bottom, arefastened
. Canadian transportation & distribution management. condensation drainedthrough M in. opening at the centre. The arrangement of lugs for the sus-pension of the hopper bottom with thecentre of gravity of the bottom set out ofthe vertical line of the point of suspension,creates a tendency for the hopper bottomto remain closed, and this tendency is fur-ther augmented by the additional weighton the bottom, and the counterbalance onthe operating shaft. The operating ar-rangement is quite simple, and is shownquite clearly in fig. 5. Cross rods throughthe front angle of the swing bottom, arefastened to rods which connect with armson the operating shaft. Crank handles oneach end of the shaft permit of readymanipulation by the crew, and the actionof the counterbalance on the shaft, causesthe bottom to close as scon as the operatorreleases the crank, which, it is hoped willovercome the occasional neglect of the crewin not closing the pan. An installation onan M-2-a consolidation locomotive is shownin fig. 5. BLOW OFF VALVE.—It frequently hap-. Fig. 3.— Standard Side and End Grates. which is fastened to the mud ring in theusual manner with studs and cotters. Thenecessary air vent, which should be one-seventh of the grate area, is provided bymeans of the standard air ventcasting in the side and ends of the upperpart of the pan. The whole arrangementis so constructed as to be readily removedwhen necessary. The hopper as shown infig. 4 consists of two castings which differ pens that the locomotive blow off valve isout of order from scale or other foreignsubstance blocking under the valve, caus-ing the valve to leak more or less the ordinary type of blow off valve,it is necessary to drain the boiler in orderto get at the valve for repair. In the typeof valve in use on the , such a pro-cedure is unnecessary. Essentially, thisvalve is a double one, shown in fig. 6; one
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherdonmi, bookyear1913
