In early elevators how did the power source know the required level

Subject: In early elevators how did the power source know the required level

Date: Fri Apr 15 08:02:42 2011
Posted by Steve
Grade level: grad (non-science) School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Science History
ID: 1302879762.Sh

Message:


I need to know how the most primitive of elevators worked (e.g. those powered 
manually or by steam etc). For example, when a person got into the elevator 
car on the top floor how did they communicate to the power source which floor 
they required. Thank you

Re: In early elevators how did the power source know the required level

Current Queue | Current Queue for Science History | Science History archives

Try the links in the MadSci Library for more information on Science History.