. Das Straßenbahnjournal . d auf der Seite der Lokomotive, die dieser bestimmten Einheit hingegeben ist. Es gibt zwei unabhängige Sätze von Speicherbatterien, die jeweils aus zehn Zellen, bewertet bei 40-Ampere. Stunden. Die Batterien werden über einen induktionsmotorbetriebenen Gleichstromgenerator geladen. Abb. 8 ist eine Reproduktion des in der vergangenen Woche veröffentlichten Infotaintes, außer dass die Schlüsselzahlen für die Klärung des allgemeinen Apparates im Inneren der Lokomotive weggelassen wurden. Es zeigt zwei Längsschnitte durch den Mittelgang mit dem Gerät auf jeder Seite. Diese Ansicht zeigt dies mit dem
1845 x 1354 px | 31,2 x 22,9 cm | 12,3 x 9 inches | 150dpi
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. The Street railway journal . d on the side of the locomotive devotedto that particular unit. There are two independent sets ofstorage batteries, each consisting of ten cells, rated at 40-amp. hours. The batteries are charged by an inductionmotor-driven direct-current generator. Fig. 8 is a reproduction of the inset published last week, except that the key numbers have been omitted for the sakeof making clearer the general apparatus in the interior of thelocomotive. It shows two longitudinal sections through thecenter aisle with the apparatus on each side. This view in-dicates that, with the exception of such devices as are notin duplicate, the equipment on each locomotive is so placedthat an interior view is the same from one end or side of thelocomotive as from the other. Thus the weight is uniformlydistributed over the drivers. UNIT SWITCH GROUPS A unit-switch group is shown in Fig. 9. Each unitswitch, of which there are eleven in the group illustrated, isof the electropneumatic type, with which our readers arc. FIG. 10.—TOP VIEW OF MASTER CONTROLLER familiar. An interesting feature is found in the means em-ployed for interlocking. The switches are interlockedelectrically in such a manner that when one switch isclosed the circuits to the electromagnets of the otherswitches which should not be operated are either held openor kept closed, as the case may require, by means of con-tacts controlled by the piston of the switch valve. Thesecontacts are shown in Fig. 9. All of the motor circuits andswitch wires are run in metal conduit along the. lower por-tion of the locomotive, while all of the low-potential batterycontrol circuits are arranged in metal conduit along theroof of the locomotive. As intimated above, only the wires of the battery andelectromagnet circuits pass into the controllers. Thesesame wires are run overhead from each end of the locomo-tive, where they terminate in three contact plugs, taps beingtaken to each controller and to each unit switch alo
