. Railway age gazette . The conditions to be met were those of vi-bration, varying temperatures and atmospheric conditions, aswell as the rough handling to which devices on locomotives aresubject. To meet these conditions required delicacy of adjust-ment and freedom of operation, combined with increased sizesof parts and durability of construction. An instrument which has been developed to a satisfactorystate is manufactured for the Locomotive Superheater Company,30 Church street, New York, and is of the electrical type, con-sisting of thermo couples, constructed and arranged in acc
. Railway age gazette . The conditions to be met were those of vi-bration, varying temperatures and atmospheric conditions, aswell as the rough handling to which devices on locomotives aresubject. To meet these conditions required delicacy of adjust-ment and freedom of operation, combined with increased sizesof parts and durability of construction. An instrument which has been developed to a satisfactorystate is manufactured for the Locomotive Superheater Company,30 Church street, New York, and is of the electrical type, con-sisting of thermo couples, constructed and arranged in accord-ance with the Bristol system. The cold end is located in theboiler, in the saturated steam, and the hot end in the steamchest, directly in the flow of the superheated steam. Electricalconnections are established to an indicator of the milH-voltmetertype, located on the gage bracket in the cab. The ends of the couples are so located that a variation of theoutside temperature has practically no effect upon them. The. Assembled Parts of the Pyrometer Apparatus cold end of the couple, placed in the boiler in the saturated steam,is subject to only the slight variation in temperature due to thevariation of the steam pressure, which does not vary more thana few pounds when the locomotive is in operation. The hot endof the couple, placed in the steam chest in the flow of super-heated steam, is subjected to a range of temperatures from thatof saturated steam to about 650 deg. The difference in electro-motive force generated by the hot and cold ends of the couplesis read directly in degrees Fahrenheit on the dial in the cab. The electrical lead and extension between the couples andthe instrument are designed to provide flexibility and the leastamount of deterioration resulting from handling and are insulated with a specially prepared composition, whichis affected by neither moisture nor temperature, and they are finally enclosed within a flexible bronze armor which preve
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1913
