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Industrial Revolution: Elevator

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savannah rowland

on 12 February 2014

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Transcript of Industrial Revolution: Elevator

More Description
In a typical elevator, the car is raised and lowered by six an eight motor - driven wire ropes that are attached to the top of the car at one end travel around a pair sheaves, and are again attached to a counterweight at the other end. The counterweight adds accelerating force when the elevator car is ascending and provides a retarding effort when the car is descending so that less motor horsepower is required. The counterweight is a collection of metal weights that is equal to the weight of the car containing about 45% of its rated load. A set of chains are looped from the bottom of the counterweight to the bottom of the counterweight the underside of the car to help maintain balance by offsetting the weight of the suspension ropes. Guide rails that run the length of the shaft to keep the car and counterweight from swaying or twisting during their travel Rollers are attached to the car and the counterweight to provide smooth travel along the guide rails.
More Description
The traction to raise and lower the car from the friction of the wire ropes against the grooved sheaves. The main sheave is driven by an electric motor. Most elevators use a direct current motor because its speed can be precisely controlled to allow smooth acceleration and deceleration. Motor - generator (M-G) sets typically to provide dc power for the drive motor. Newer systems use a static control. The elevator controls vary the motor's speed based on a set of feedback signals that indicate the cars position in the shaft way. As the car approaches it's destination, a switch near the landing signals the controls to stop the car at floor level. Additional shaft way limit switches are installed to monitor over travel conditions.
Elisha Graves Otis
How it was invented
In 1852 Elisha Graves Otis, invented the first safety brake for elevators. With his installation of the first safety elevator in 1853 he literally started the elevator industry. His invention enabled buildings - and architects' imaginations - to climb ever skyward, giving a new and bolder shape to the modern urban skyline. Today you can ride an Otis elevator with confidence, knowing that it represents 150, years of experience in both safety and quality.
Impact on Industrial Revolution
"On the technology front, the biggest advancements were in steam power. New fuels such as coal and petroleum, were incorporated many industries including textiles and manufacturing. Also a new communication across the ocean much faster. But along with this great leap technology, there was an overall downfall in the socioeconomic and cultural situation of the people. Growth of cities were one of the major consequences of the Industrial Revolution.
An elevator (or lift in British English) is a type of vertical transport equipment that efficiently moves people or goods between floors (levels, decks) of a building, vessel or other structure. Elevators are generally powered by electric motors that either drive traction cables or counterweight systems like a hoist pump hydraulic fluid to raise a cylindrical piston like a jack.
Industrial Revolution: Elevator
How it was invented
In 1853, Elisha Otis established a company for manufacturing elevators and patented (1861) a steam elevator. While, Elisha Graves Otis did not actually invent the first elevator, he did invent the brake used in modern elevators and his brakes made skyscrapers a practical reality. In 1857, Elisha Otis and the Otis Elevator Company began manufacturing
passenger elevators.
Impact on Industrial Revolution
Many people were driven to the cities to look for work, in turn the ended living in the cities that could not support them. With the new industrial age a new quantitative and materialistic view of the world took place. This caused the need for people to consume as mush as they could. This still happens today. Living on small wages that required small children to work in factories for long days." Quoted from Michigan
(August 3, 1811-April 8, 1861) was an American industrial founder of the Otis Elevator Company and inventor of a safety device that prevents elevators from falling if the hoisting cable fails. He worked on this device while living in Yonkers, New York in 1852, and had a finished product in 1854.
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