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Allis-Chalmers aluminum American amperes antifriction assembly automatic bearing belt breaker brush building capacity cent chart Chicago clean complete conveyor Corp Corporation cost drive duction economic efficiency Electric eliminated employees engineering equipment FACTORY finished floor foot-candles gear gear pump grease hand truck heat horsepower inches increase industrial installation John Morrill labor layout load lubrication machine maintenance manufacturing materials handling ment metal methods methods-time measurement motor move º º operation output pipe plant ployees pressure primary feeder problem production pulley pump radial reduced roller roller bearings rubber safety savings schedule screw speed standard steel storage supervisor supply Taft-Hartley Act tion transformer transformer fault truck union unit V-Belts valve voltage volts wage welders welding wheels wire workers York