This lift motor room has hardly been touched - only a remote montoring panel has been added and connected into the existing relay controller.
It has the Otis carriage selector and lifts that run at two speeds. Unfortunately this one does not contain the 'bacon slicer' leveling cam. This sits alongside the carriage and has rotating discs that represent the 'fine tuning' for car leveling at each floor. When this is present, the cams now take charge of leveling rather than using brushes (the moving/springy contacts on the carriage).
Due to no leveling cam, the lift can only run at two speeds and quite abruptly changes between them.
The carriage selector was a common piece of kit on these old Otis installations and I've been trying to film one of these close up for a while now. On this day my wishes came true, and you guys also benefit from the experience with this upload.
WARNING - these environments are dangerous! I am an engineer by trade and I know the dangers of these motor rooms. Never touch anything (including open framed relays) unless you know what you are doing - RISK OF DEATH!