. A textbook on electric lighting and railways. International correspondence schools, Scranton, Pa. v. 1-3, 5 . ause it is notconnected to anything. It^i^- 35. is put there not only to avoid having two sorts of cut-out devices in the controller,calling for two sorts of plugs, but it also serves as an addi-tional mechanical support for the top plug, thereby makinga good electrical contact more certain. In the positionshown in Fig. 35, the path of the current is T-R-R-R-13- IJ^-F^-Y-F^ A^-\--A^ 15-16-R-R-17-18-F.^~^ -F^ ^-ij -^o+ to the ground at G. It will be noticed that the brush lead at whic
. A textbook on electric lighting and railways. International correspondence schools, Scranton, Pa. v. 1-3, 5 . ause it is notconnected to anything. It^i^- 35. is put there not only to avoid having two sorts of cut-out devices in the controller,calling for two sorts of plugs, but it also serves as an addi-tional mechanical support for the top plug, thereby makinga good electrical contact more certain. In the positionshown in Fig. 35, the path of the current is T-R-R-R-13- IJ^-F^-Y-F^ A^-\--A^ 15-16-R-R-17-18-F.^~^ -F^ ^-ij -^o+ to the ground at G. It will be noticed that the brush lead at which the currentgoes into the No. 2 armature is marked A^ — . Of course,the very fact that the current goes in at this brush holdermakes it positive, but the lead is marked negative to indi-cate the fact that because the motors hang on the car truckback to back, their armatures must turn in opposite direc-tions, in order to urge the car in the same direction, and ifthe current goes into both fields from the same end, it mustenter the armatures at the front lead on one motor and atthe back lead on the Ri Its M/WWWWWW ^R2 24 ELECTRIC RAILWAYS. 51
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectelectri, bookyear1901
