. Railway maintenance engineering, with notes on construction . ared, and finally the dis-tant signal is cleared which locks the move-ments of the functions on the other trackin positions to prevent the trains on thattrack using the crossing. Fig. 180 shows the Saxby and Farmermachine. On many roads the distant signals areelectrically connected, and when this is donethe apparatus for operating the wire-con-nected signals is omitted from the rocker shaft is quite generally employedas shown in Fig. 181, instead of the crankillustrated in Fig. 180. Before the lever can be moved from its
. Railway maintenance engineering, with notes on construction . ared, and finally the dis-tant signal is cleared which locks the move-ments of the functions on the other trackin positions to prevent the trains on thattrack using the crossing. Fig. 180 shows the Saxby and Farmermachine. On many roads the distant signals areelectrically connected, and when this is donethe apparatus for operating the wire-con-nected signals is omitted from the rocker shaft is quite generally employedas shown in Fig. 181, instead of the crankillustrated in Fig. 180. Before the lever can be moved from itsnormal position, the latch must be raised. This operates the barsin the locking; dogs are riveted to these bars which, through themedium of cross locks, lock the bars on the levers controlling func-tions conflicting with those operated by the lever it is desired tothrow. Consequently the latch cannot be raised nor the levermoved unless the conflicting functions are in their proper positions,and after the latch is raised these conflicting functions are Fig. Indicator. (Federal Signal Co.) SIGNALS AND TNTERLOCKERS 327 UJ X to i 1 © h- 1 ©@ 1 uJ i/5 oc:uJ >-uJ or <r. o ^ <VJ jO 3: lO se oo s @ ® @ 1 e 2^ ^ ^^ - tvj fO ■^ lO vO r— oO
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
