. Official proceedings . DESIGNING ENGINEERS AND MANUFACTURERS OF ELESC0 STEAM SUPERHEATERS FOR LOCOMOTIVE. MARINE ANO STATIONARY BOILERS FEED WATER HEATERS . EXHAUSTSTEAM INJECTORS AND PYROMETERSFOR LOCOMOTIVES THE SUPERHEATER COMPANY IVopln ^ PROCEEDINGS /C. r ll°?PerYear *V»^ 25* Per Copy J^ Vol. XXVII. JANUARY 26, 1928. THE DISPATCHER CONTROLLED SIGNAL SYSTEMFOR TRAIN OPERATION By W. B. RUDD, Engineer, Union Switch & Signal Company,Swissvale, Pa. __

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