Elevator

= Elevator = B. Dudastoc



These are the different kinds of steel cable that may be used in a elevator

** Purpose **
//A lifting system using cables and pulleys to lift people or objects to higher or lower levels.//

Energy
//Some elevators use hydraulic energy.// //Other ones use cables.//

Controls
//There are steel cables, which help move the elevator. They can break, but even one can help move the elevator, still. If they break, there are safeties that are substitutes.//

Materials
//An elevator has many materials besides the steel cables and safeties. There is a sheave in each elevator, which is pulley with a rugged surface. An electric motor is which helps the elevator, and cables, move. The car is the main elevator, the box which holds the people or objects. Steel rails are what the elevator goes up and down on.// //However, hydraulic elevators have other materials also such as cylinder, piston, fluid reservoir, rotary pump, valve, and hydraulic fluid. It is designed differently from the much more common cable elevators// The history of the steel cable the modern wire rope was invented by a German mining Wilhelm Albert between 1831 and 1834. It was used in mining in the Harz Mountains in Germany. It was quickly accepted because it proved superior to rope. It had never been used before. Wilhelm Albert's first cable consisted of wires twisted about like a hemp of rope in the core, six such strands then being twisted around another hemp rope core in alternating directions for extra stability. Earlier forms of wire rope had been made by covering the rope with steel. In America wire rope was later manufactured by John A. Roebling, forming the basis for his success in suspension bridge building. Roebling introduced a number of innovations in the design, materials and manufacture of wire rope. Manufacturing a wire rope is similar to making one from natural fibres. The individual wires are first twisted into a strand, then six or so such strands again twisted around a core. This core may consist of steel, but also of natural fibres such as sisal, manila, henequen, jute, or hemp. This is used to cushion off stress forces when bending the rope. This flexibility is particularly vital in ropes used in machinery such as cranes or elevators as well as ropes used in transportation modes such as cable cars, cable railways, funiculars and aerial lifts. It is not quite so essential in suspension bridges and similar uses. Wire rope is often sold with vinyl and nylon coatings. This increases weather resistance and overall durability, however it can lead to weak joints if the coating is not removed correctly underneath joints and connections. The way it is made is by starting out with a center and putting hexagon shapes around it and twisting it until it is tight.

Science
//The elevator gets it's energy from// //fluids or cables. The fluid principle is used in hydraulic elevators and pushes up and down with a pump to cause the elevator to move. The cable elevator uses a pulley to get moving. The pulley is a part of the science because without it, the elevator couldn't work in a cable elevator.//

Design
//The public can only see the "car" of the elevator. They can not see the other parts. However, the other parts are set up with the steel rail as which the car glides on. The sheave is a pulley with the steel cables wrapped around it, and they loosen when the elevators on. The motor is next to the sheave.// //In a hydraulic elevator, there is a "fluid-pumping system" that pumps into the cylinder which pushes the piston up to get the elevator moving.//

Evolution
//Old fashioned elevators had to be controlled manually. There was even a job for it called an "elevator guy". Being that today there are buttons and controls, the elevator has gone a long way. Some also had wood and glass doors with "diamond" shape patterns.//

Competitors
//Escalators are similar because they also work with pulleys. Material lifts are also similar because they also carry things to new levels.// //The elevator is also strangely similar to a see-saw, in the sense that the counterweight and the car have to balance with each other and make one go up.// // An elevator can also be used to go up on a skyscraper. Without an elevator, you wouldn't be able to go to a skyscraper! //

Partners
//Material lifts work in conjunction with elevators because they are similar and are like elevators in the sense that they carry things.//

Siblings
//An esculator uses a pulley system which is part of the scientific principle for some elevators.//