The Safe Elevator - PowerPoint PPT Presentation

1 / 6
About This Presentation
Title:

The Safe Elevator

Description:

In 1852 Elisha Graves Otis built a safe elevator. ... Facts About Elisha Otis! ... http://inventors.about.com/library/inventors/blelevator.htm. http://go.grolier.com ... – PowerPoint PPT presentation

Number of Views:484
Avg rating:3.0/5.0
Slides: 7
Provided by: umdU
Category:

less

Transcript and Presenter's Notes

Title: The Safe Elevator


1
The Safe Elevator!
  • Thomas, Sara and Corey

2
A Safe Elevator
  • In 1852 Elisha Graves Otis built a safe elevator.
  • It had a safety brake to stop the elevator even
    if the ropes broke.
  • If the cable did break a hook would hook in
    toothed guide rails and the elevator would hang
    so the people could get out of the elevator.

3
Facts About Elisha Otis!
  • Elisha Otis was an inventor who worked at the
    Bedstead Factory of O. Tingley and Company.
  • Elisha Otis was born on a farm near Halifax. He
    was born August 3,1811. Elisha Otis died on April
    8,1861.
  • He spent 3 years trying to think of an invention
    and one day he heard about the cables braking on
    elevators and invented the safety brake.

www.theelevatormuseum.org
4


If there were no elevators
  • If there were no elevators we would have to use
    the escalators.
  • If there were no elevators we would have to move
    heavy things up the stairs with a dolly.
  • If there were no elevators we would have to use
    stairs.

5
Our Own Invention
6
Our Sources
  • http//www.theelevatormuseum.org
  • http//inventors.about.com/library/inventors/blele
    vator.htm
  • http//go.grolier.com
Write a Comment
User Comments (0)
About PowerShow.com