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Otis DC Gearless 800 fpm express elevator with 'pie plate' selector
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This is a great short little video showing a large Otis DC Gearless elevator motor machine with "pie plate" selector. You can see the pie plate which represent floors. The selector itself is basically a running model of the elevator which controls starting, stopping, direction selection, leveling, and signaling. The big wheel at the base of the selector is driven off a tape which is attached to the car and counterweight. In the beginning of the video you can see the large internal drum brake. The brake is electrically lifted, mechanically applied. They last a very long time because the motor does all of the work of starting/acceleration and deceleration/stopping. The brake is normally only applied after the car has stopped.
Otis DC Gearless 800 fpm express elevator with 'pie plate' selector
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