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An elevator is a mechanism for moving people and freight from level to level in a buildingor any other structure The first elevator-like structure was built in 236 BC by theArchimeds This construction was a hoist operated by ropes and pulleys However thefirst pragmatic elevator was not developed until the 19th century Though sensible thiselevator has been modified many times throughout the course of history and is stillupdated with all of the new advancements in math and technology From the start of theproduction of elevators through today there have been numerous and boundlessimprovements made on their structure and how they operate all due to the advancementThe first elevator developed was known as a manual elevator This system ofelevators used relay logic Relay logic was a simple wiring based on circuits This typeof elevator did not transfer people from one level to another only cargo The second type of elevators was developed in the 1800s These elevators werepowered by steam At first these elevators were used solely to transport freight infactories and ore in mines Unfortunately these elevators required a safety device torestrain the elevator from dropping if its supporting cable broke and this had not beeninvented yet Eventually this necessity was discerned and acted upon In 1852 ElishaGraves Otis designed the first safety contrivance for elevators This device was a systeminvolving spring-operated cams that affianced the guide rails in the elevator shaft when thecable broke This secured the elevator from subsiding which enabled steam poweredelevators to be used for transporting people along with cargo This new use was causedby the precautions taken in improving the safety of steam powered elevators It was firstused for people in 1857 in New Yorks own Haughwout department store This edificewas driven by steam power unlike the manual elevator it had the capability of transportingpeople from floor to floor Though this was a major amplification in the manufacturing ofelevators technology and mathematics were still improving allowing for even more typesof
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