. The street railway review . ng between switches. The detailed description is givenbelow and by it its construction is readily understood. There arc three separate operating parts, a signal setting box, asignal releasing box and the semaphore box. The signal setting box is shown with details in Fig. I. The mag-nets are i^^.jin. winding space with fiber heads and % ; the end of the iron cores exposed to the armature arc tippedwith platinum or silver, and the armature, B, is also faced as thesesurfaces come together and complete the circuit and arc held incontact by this current als
. The street railway review . ng between switches. The detailed description is givenbelow and by it its construction is readily understood. There arc three separate operating parts, a signal setting box, asignal releasing box and the semaphore box. The signal setting box is shown with details in Fig. I. The mag-nets are i^^.jin. winding space with fiber heads and % ; the end of the iron cores exposed to the armature arc tippedwith platinum or silver, and the armature, B, is also faced as thesesurfaces come together and complete the circuit and arc held incontact by this current also passing through the magnets. Thearmature B normally rests out of the influence of its magnet. Arod entering from the bottom of the box shoves this armature up closed by the conductor on the car following. The diagram of con-nections is given in Tig. 4. Covered No. 10 iron wire can be Uoumblaser developed all the details, and Assistant Man-ager Walter says it greatly aids in the satisfactory operation of into contact with the ends of the magnet, and is held in this posi-tion until the circuit is broken. The current from the trolley enters first through a lamp, thenthrough the magnet winding to the frame. When the armature isup the current passes down the arm holding the armature and thenthrough the signal line to the distant semaphore box. The semaphore box contains a pair of solenoid magnets whichset the semaphore disk and light the lamps. These lamps are ar-ranged behind a red glass disk inserted in the semaphore Thedisk is set by means of a solenoid operating a bell crank and link,which turns the semaphore rod and displays the red disk. The di-mensions and methods of general construction employed are shownin Fig. 2 The circuit first passes through three lamps, thenthrough the solenoid and out to the signal releasing box. The con-struction of this box is shown in Fig. 3. and consists of a switchand a lamp in circuit with this switch. It is operate
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
