Michael Sol Collection ACGUST 6, 1915 RAILWAY AGE GAZETIE 247 . ELECTRIC LOGOMOTIVES .71 per cent for 49 miles, one of these 27o-ton locomotives will at a speed of approximately Mechanical Engineers, May 14, the subject of electt: ic loco- !he .locomotives for. both passenger and freight service 8lJ.'tives was discussed A. F. ":.: tile same WIth the, exception that thos.e used in OJ the General Electiic" eolnpalty, 1q. ¥." Mr. «. seHlcc\are .Ieared $Q- a .ratlO of to ·1, while those 1D Batchelder gave an illustrated talk in which he briefly described servIce are about 2Y2 to 1. This is standardization t6 the. •. .iRe"'. degree and. pennits_ of the minimum was_ follo ... 'Y ed ,by ;Mr. Armstt:ong who on parts: As before, electric locomotives are made of ttieSe locomdtWes. ', .': · r. r I l',t "f r- t:" : .:' # 'J 'J m -.t:wJ sectIons, being CODDeCted togethu' :willi : :articulated .• •• I ' o( for 'of the. ofj locomottv.es,.• statmg tlme. element ;is'. . mOst • be. of value light unportant factor m ,Its,. ',1 The :""he,n trams or .for work. . .,) '.:' aied continuously whesi. heated abeve' a c:ettaiB tem- The ChIcago, Mllwaukee & St. Paul electric locomotives perature, although it considerable time to -reach a: danger:' for. the fitst direct current 'electtic, bNkiiJg) ofi'fhe ous point. It IS therefore, necessaty' to bow: the taiitig of .the regenerat!-,ve type. other words, the motors ',' are I rev.ersible. eltctric locomotives, in addition 'to their Starting trattive effort the grades receive electrical powet, and in 'going lor short periods of .hoor"s additioJ loWn the' grades the train will drive the motors as g'erieratofs the continuous 'It .ii" impbrtant . he aDd thus brake the train or ho'ld it elettricaliy and rerum lJo'Wet clearly understood at this 'when. long iO . ascending these engineS ,consume .. lew., the effiClency of a .. IS about 88 89 per cent now possible to get . a .hoisepo..wcr ; with about' '15 lb.' steam; of the blowers, atr compressots and. fans 'and: incidetlw Mr. Armstrong claimed that -the locomotive the locomotive itself. ,In Mr. Armstrongrs opiriion the standing these consid- of this electric braking OD the mountain grades 'will be trabou. " ,, ·. T _ much in the, power returned to the line as In consideritig high speed passenger: service' he caiIed 'atfentiori thereby in the elimination of .due., to to the latest type of New, Central , shoes and overheated wheels' on the the 'loDi' doWn which will handle a 1,200-ton train at a 'speed of 60' miies, an . . hour, giving an output continuously without ,danger from . back to the latter, type of New YorkCeotral 2:000 hp.: 2,600 hp. caD be obtained for houi:' Mr. Armstrong that as: e DO This engIne IS able to handle the ser,yice of overland for : of thus apy distance at a speed of 60 miles an hour or more. lnetlon. This pemuts of an effiaency as high as 93_ to 94.,per Referring to electric locomotives for freiKItt'service, be :called €ent;· that is, of the electrical power input to the locomotive atttention to the installation on the Butte, AnacOAda &' Pacific. between 93 and 94 per cent is returned as mechanical· GUtJ)'&if This was made for the sole purpose of' 'more ,'eco:': rim of on nomica1 operation. The prelimi"nary report indfcatedthatthe the other Will glve an effiClency of not much -higher. money saved by putting in the installation would 'p,ay: per or is per cent operating on level TheprofiJe .. cent on the capital required to make the change from road was 8uch as to preclude the use ,of the to electric operation. For the first six months the results ob- used on New York Central tained indicated a yearly return OD 'the capital invested, of. 20 . The },{. i1wa ':'k ee electric locomotives 'a . tractiv:e: per cent. This road operates freight trains which o:f lb. per unit and a startiDg tractive dort p£ age from 3,soo to 4,000 tons, and 4,500 tons is' 'not or run a Ead1 locomotive unit weighs 80 tOns, two units being 't<1 240,OO()"lb. 'With'the 3,000 d. c. line voltage there ,wIlt handle the heavy trains on the 0.3 per cent 'gfade. The loeo-' on ,each motor. r he electrified motives have a tractive effort of 26.000 lb. a 'speed of -\C4O D1iles long, and there Will be miles per hour continuously. This corresponds to a factor of averaie distance of 30 wles' adhesion of about 6. From Mr. stated entire road. ' .. ... t:i: that it is found to be universal practice to, give a 10<;0- '. oJ fl ) .. ,.';;1 L.l!:!:·. motive a rating calling for a tractive effort on the grade; : RAn..WAY tN of about 18 or 19 per cent co-efficient of adhesiolli 'aDd that the and 'Hessian; State .RiilltaYs the electric locomotive was designed 10 'folloW 'this' .. practice et:nploying 'a ,Dun:tbet' of Wontelt as line' very closely, although advaDtage is taken in the 'electric loco- J 'this is heavy work. motive to obtain a greater output for 1 a tirriethan .' tit are sign an , ': can sustain continuously. In heavy trunk line work the-'dUfer- pave nothmg to do WIth Social Democracy, ot WIth' the, Trans- mce between the short period rating and the continuous' rating pOrt " W Association, that they will is small. m-.tings, or be in any way 'with' ' the Speaking of the new installation on the. Milwaukee Social Democratic pTopaganda or efforts. .,', !;'., ' Ie St. Paul, Mr. Armstrong explained that this system is a3,QOO :; ,ASIA Turkish Of, 'War is volt direct current system, practically the same as ·used '00 the to have. bee"' granted a large credit to build' l ami Batte, Anaconda & Pacific. The weight of 'eacht-.'loGO'mQtive 'four "rllain .and tWo btancn lines, all tinder I militelry ,confrot. unit is 110 tons on drivers and ",here tWo' 'are' 1ftH The chief of these lines are from Angora to "from be the general custom, the tOtal weight will "6e :,Z7t)"tQris: "1\ on the Black sea, from Muratlyto Rodoito, continuous 24-hour rating of 3,200 hp. is' . ilnd .ifr(im"a :point dft the Erterum' Railway to the Blade 'sea. and a tractive effort of 72,000 lb. :QI ON PHIUPPINE TRAlNs.-The Board of miles.an hour. Mr. Armstrong clai:med an C'ommissioners has handed down a decision ordering cent 1D tractive effort for the Jelectric the J?1U1.ippine,Railway, on its Cebu lines, to install in same weight on drivers over that which c.... ra it$.McOndp. and, third-class coaches and to supply k> all steam locomotive on acCOWlt of the_'.reciprocating:ialld: ilqec- 'drinking 'cups at nominal cost. ,The feet rotary motion of the steam, .... Q(:' ' .. r tIt, of' bidd' h th , Ovtt the ,',;&,'!fo,' ", t ere (j rlCf.e In the coaches.' ' '\. - ...... .,; " · ,