. Operation of trains and station work and telegraphy . as faras it will go, which raises the (Figure 125-J)up to the magnets (Figure 125-K), transferring the cur-rent from the bell L to the magnet, K-88, thus closingthe circuit. The magnet K (Figure 125) is in fact madeup of two units, K-88 and K-360. Its construction is ex-plained on page 402. The preliminary spindle handle(Figure 120-B) is permitted to automatically return toits normal position. This unlocks the revolving drum(Figure 125-C) and indicates the fact by displaying awhite instead of a red disc in the indicator at Figur
. Operation of trains and station work and telegraphy . as faras it will go, which raises the (Figure 125-J)up to the magnets (Figure 125-K), transferring the cur-rent from the bell L to the magnet, K-88, thus closingthe circuit. The magnet K (Figure 125) is in fact madeup of two units, K-88 and K-360. Its construction is ex-plained on page 402. The preliminary spindle handle(Figure 120-B) is permitted to automatically return toits normal position. This unlocks the revolving drum(Figure 125-C) and indicates the fact by displaying awhite instead of a red disc in the indicator at Figure122-H. The operator now moves the end staff (Figure120-E) up the vertical slot into engagement with thedrum (Figure 125-C), the outer guard (Figure 122-N)having first been turned to the right position, revolves thelatter through a half turn, using the staff as a handle,and finally withdraws the staff through the opening atFigures 120 and 124-M. In making the half turn thedrum (Figure 125-C) has reversed the polarity of the STATION AND TRAIN WORK 399. FIG. 121. ABSOLUTE STAFF View with Cover Removed Showing Armature Dropped. 400 RULES FOR MOVEMENT OF TRAINS
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1919
