Doors to elevators are off many types too- collapsible, 2 panels meeting in the middle or slide open doors. Many types of elevators have come into existence these days.. Hydraulic elevators, passenger elevator - which only carries people, stage lifts- used to lift the stages for transport between orchestras, residential- installed in homes to help the aged and the physically challenged, dumb-waiters- used in the restaurants and lodges to move food and laundry, many more.. Some of the controls in an elevator are over-load sensors which indicate when the carrying capacity of the elevator is exceeded. Electric fan- to keep up the circulation of fresh air and comfort of the people inside.
To begin with, the idea of elevators was back in the BC's when Archimedes built his first elevator in 236BC. Along from then elevators are considered to be a transport vehicle which moves in vertical direction carrying people or goods between floors in the building its installed in. These elevators are powered by AC/DC motors which drive the cables which helps the elevator cab to move up and down in the vertical direction. Elevators help in speedy transport of goods, people etc. Not only this but elevators like panoramic can add classy touch to a building. Elevators Manufacturers are the best makers and suppliers of elevators for a long time. We use top quality materials in the making of these machines and hence you can expect them to run efficiently for many many years. The elevator doors are another important characteristic of an elevator, the door avoids people or goods from falling off the cab into the shaft.
While there are many documented uses of the elevator, the first passenger elevator would not be seen until 1884, when a very talented inventor named Elisha Otis unveiled the worlds first safety elevator. Otis led a very interesting life and was a talented mechanic. While overseeing the construction of a new factory, he invented a way to stop a rope hoist from falling if the rope broke.
After the building of the factory was complete, he was set to go mine gold in California, when he began to receive many questions about his elevator. Seeing a market for this device, he started his own company that was aimed at providing commercial dumbwaiters to businesses. In 1854, Otis unveiled the first passenger elevator, which incorporated a new safety design to protect against cable failure. His design is the basis for the safety system that is used on today's elevators.
Otis's first safety elevator was showcased at Crystal Palace, which was a building located in New York. The Crystal Palace was built as a place for people from around the world to meet and showcase their designs. He quickly received an order for his elevator and the first permanent passenger elevator was installed several years later in 1857. The safety elevator was not Otis's only contribution to elevator technology. He also developed a steam powered elevator in 1861. This elevator was unique because it contained its own steam generator, so even businesses that had no power source could use the elevator.
Otis died shortly after receiving his patent for the steam elevator, but his two sons took over his business. They were much like their fathers in that they were very mechanically inclined and continued to help steer the elevator industry.
Today the Otis Elevator is known world wide and holds over twenty percent of the elevator market. Their elevators can be seen in almost 1.25 million buildings all over the world and they employ almost seventy thousand employees.