-
200 BCE
The Invention of the Stairs
The first stairs ever invented was in 200 B.C and the stairs had two walls. Before the stairs came out if people wanted to get the next floor the had to use a ladder to get up and if they had stuff in their hand it was even harder. the sight is used was World book,com -
The Invention of the Elevator
Otis was the first to make a elevator. Otis was a inventor he made the elevator with a automatic safety device. The device prevented the elevator from falling if the rope that held the elevator broke. The sight i used was world book.com -
Otis and his Elevator
He had a safety devise in the elevator to prevent it from falling. Otis had demonstrated his elevator in new York city. He had passed the test so they started to make more and more. the sight i used was world book.com -
The First Escalator
George H. painted the first escalator which was the first moving stairs. That is how everything started and that is how Otis company got t him. The sight i used was world book.com -
The First Escalator
the first escalator was based off of George H.'s painting. And New York City had the first escalator. It turned out to be the new thing. the sight i used was world book.com -
The First Moving Stairs
New York City had the first moving stairs. The moving stairs was bass on George H.'s painting. and that is how it started. the sight i used was world book.com -
Otis company
The Otis elevator company combined the flat steps and some other things to make a modern escalator. So then it would draw peoples attention. The sight i used was science and context. -
The Term Lost
since the population of the elevator got so big at one point it lost its trade mark. This is the start of the escalator but it took a while for it to come out. The sight i used was world book.com -
The End of How The Stairs Are Today
there is about 20 billion stairs today in the U.S.A. It is much easier then having a ladder to get to floor to floor and it is a lot more convenient.the sight i used was worldbook.com -
The New Start
there is about 900,000 elevators operating today. The stairs and the elevator put together makes a escalator, well that is what George H. thought of only he painted a picture.the sight i used was world book.com -
The Invention of The Escalator
the escalator is very helpful because it takes you to the next floor with out using all of your energy. there are about 33,000 escalators in use. (Source: science and context)
