Railroad Signaling Explained: Electric Locks at Hand Throw Switches

Welcome to another FORBIDDEN VIDEO! In the last segment I covered Power Switch operation and the inner workings of an M-23 power switch machine. In this piece I cover hand throw switches and the two types of electric locks we used in my territory over my career. There are other types but all work on the same principle.
Called "hand throw" because they must be thrown manually, there are a few ways they are protected based on the type of track. There are still many electric locks in service but the "come out" signal is the modern preference where practicable. I will try to put a piece together about those but in my time as a maintainer (when I started these videos) I had none on my territory to shoot! I will try and get a piece done on those s well so stay tuned!
Follow these links to related videos
Power Switch Machine
Wayside Detectors
Control Point Operation

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