Blonde Girl With Blue Eyes And Big Breasts Shows Off In The Elevator

The safety and speed of electric elevators were significantly enhanced by Frank Sprague who added floor control, automatic elevators, acceleration control of cars, and safeties. His elevator ran faster and with larger loads than hydraulic or steam elevators, and 584 electric elevators were installed before Sprague sold his company to the Otis Elevator Company in 1895. Sprague also developed the idea and technology for multiple elevators in a single shaft.
The inventor Anton Freissler developed the ideas of von Siemens and built up a successful enterprise in Austria-Hungary.
The development of elevators was led by the need for movement of raw materials including coal and lumber from hillsides. The technology developed by these industries and the introduction of steel beam construction worked together to provide the passenger and freight elevators in use today.
In 1874, J.W. Meaker patented a method which permitted elevator doors to open and close safely. U.S. Patent 147,853