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How did elevator communication used to work?

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Uberloitenment | 14:54 Fri 15th Apr 2011 | Science
4 Answers
I understand the power behind the older elevators (manual, steam, hydraulics etc) but I wondered how was it communicated to the power source what floor was required?

Any ideas?


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Didn't there used to be a man standing in the lift who asked, "what floor Sir?"
Question Author
Yes indeed there did but I don't think he was the power source
This might give you a start although it does not really deal with older systems

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