. Railway mechanical engineer . ston and rod, crosshead andpins, crosshead arm, the lower end of the combination leverarm, the combination lever link, and the front end of themain rod, all parts complete. The side rods and main rodsshould be weighed complete with each bearing separatelysupported on round bars passing through the center of thebearing. The practice of the New York Central corresponds to therule adopted by the American Railway Master MechanicsAssociation, except that the weight of the reciprocating partsminus 1/400 weight of engine is changed when necessaryto come inside the foll
. Railway mechanical engineer . ston and rod, crosshead andpins, crosshead arm, the lower end of the combination leverarm, the combination lever link, and the front end of themain rod, all parts complete. The side rods and main rodsshould be weighed complete with each bearing separatelysupported on round bars passing through the center of thebearing. The practice of the New York Central corresponds to therule adopted by the American Railway Master MechanicsAssociation, except that the weight of the reciprocating partsminus 1/400 weight of engine is changed when necessaryto come inside the following limits: For wheel centersunder 58 in. in diameter the minimum is 55 per cent, andthe maximum is 66 per cent of the total reciprocating wheel centers over 58 in. in diameter the minimum is60 per cent, and the maximum is 66 per cent of this reciprocating parts taken into consideration are: thepiston complete, the piston rod, the crosshead complete, thecrosshead arm and the combination link on Walschaert. W. F. Hall, ,General Foremens Association OOJ RAILWAY MECHANICAL ENGINEER Vol. 90, No. 10 valve gear engines and the front end of the main rod com-plete. The main and side rods are all weighed on knifeedge supports. The allowance for the weight of the eccen-tric crank is 40 lb. for cranks the weight of which is less than50 lb. and SO lb. for cranks the weight of which is 50 lb. ormore. The final adjustment of the counterbalance is made asshown in Fig. 1. The axle supports are \l/2 in. by 10 50 in. steel plates mounted with horizontal adjustmenton cast iron horses. The weight support is of wrought ironhung from a yoke to fit over the crank pin, the bearing beingon two 3-in. rollers set 4 in. between centers. The axle sup-ports are leveled with a spirit level. The counterbalance isadjusted to make the opposite pin set exactly over the centerof the axle. A report on Counterbalancing presented to the MasterMechanics convention. Tune, 1915,
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