. Electric locking . FIG. 185. A, B, C and D. A train entering section A will pick up stickrelay IS, while stick relay ISX will remain de-energized. Whena train clears track section A current will be applied to lock relayA through stick relay IS, the same process re-occurring for eachof the sections in sequence. Stick relay ISX will pick up insection D. It will be noted that each lock relay is controlledthrough a point on another. For this reason a train moving in adirection opposite to the arrow would keep the lock relays behindit de-energized as it moved along. By the employment of stickrela

. Electric locking . FIG. 185. A, B, C and D. A train entering section A will pick up stickrelay IS, while stick relay ISX will remain de-energized. Whena train clears track section A current will be applied to lock relayA through stick relay IS, the same process re-occurring for eachof the sections in sequence. Stick relay ISX will pick up insection D. It will be noted that each lock relay is controlledthrough a point on another. For this reason a train moving in adirection opposite to the arrow would keep the lock relays behindit de-energized as it moved along. By the employment of stickrela Stock Photo
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Contributor:

Reading Room 2020 / Alamy Stock Photo

Image ID:

2CRHH75

File size:

7.1 MB (170.2 KB Compressed download)

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Dimensions:

2663 x 938 px | 22.5 x 7.9 cm | 8.9 x 3.1 inches | 300dpi

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This image could have imperfections as it’s either historical or reportage.

. Electric locking . FIG. 185. A, B, C and D. A train entering section A will pick up stickrelay IS, while stick relay ISX will remain de-energized. Whena train clears track section A current will be applied to lock relayA through stick relay IS, the same process re-occurring for eachof the sections in sequence. Stick relay ISX will pick up insection D. It will be noted that each lock relay is controlledthrough a point on another. For this reason a train moving in adirection opposite to the arrow would keep the lock relays behindit de-energized as it moved along. By the employment of stickrelay ISX this is prevented, because when a train enters the. FIG. 186. FIG. 187. route with signal 8 at clear, stick relay ISX will stay picked upand each lock relay will be connected to battery through a frontpoint of this relay is multiple with the lock relay ahead of it.For sectional route locking, with signal 8 at clear, two morestick relays would be required, both controlled in the same 176 SECTIONAL ROUTE LOCKING manner as the stick relays in the figure, except, of course, thatlever 8 would drop both relays, and one would pick up in sectionD and the other in section A. The lock relays should take com-mon through the stick relays and other lock relays in multiple, as shown in Fig. 186. Comment. The same comments as made with the previousscheme will also apply to the one under discussion. It is evidentthat this scheme, with a few modifications, can also be appliedto a plant in which lever locks are employed. SCHEME J. Description. A stick relay for every track section is necessaryin scheme J. Each stick relay will pick up as the train enters

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