Elevator History

Essay specific features

 

Issue:

Miscellaneous

 

Written by:

William L

 

Date added:

July 10, 2014

 

Level:

University

 

Grade:

B

 

No of pages / words:

5 / 1371

 

Was viewed:

2258 times

 

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Essay content:

From the start of the production of elevators through today, there have been numerous and boundless improvements made on their structure and how they operate: all due to the advancement of mathematics and technology. The first elevator developed was known as a manual elevator. This system of elevators used "relay logic"...
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This system of elevators used "relay logic". Relay logic was a simple wiring based on circuits. This type of elevator did not transfer people from one level to another, only cargo. ***** The second type of elevators was developed in the 1800s. These elevators were powered by steam. At first, these elevators were used solely to transport freight in factories and ore in mines...
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