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15.03.2020
Posted by: gudadm887
Category: instaplace
90 Comments

#loftpassengerlift

It is believed that the first elevator was installed in 1743 in the palace of the French king Louis XV in Versailles, so that the thirty-three year old king could, without hesitation, go up to the apartment of his mistress, located one floor above.

However, less than 110 years have passed from Louis’ elevator to Otis’ lift. The key element of a modern elevator is considered to be an automatic catcher – a device that stops the elevator in case of a wire break. It was invented by the American Elisha Graves Otis (1811 – 1861). He’s changed a lot of professions during his life: was a construction worker, worked in a sawmill, built carriages, served in a furniture factory that made beds. It was in 1852 that he was asked to design a lift to deliver the boards to the second floor.

That’s where Otis made his key invention. He attached a cable to the lift platform through a flat spring like shocks (useful experience with carriages). Also he installed cogged rails on the sides of the lift. The spring was bent under the weight of even an empty platform and passed smooth between the rails. In case of a rope break, the spring straightened and its ends stuck in the cogs of the rails, preventing the fall. Otis called his lift as a “safe elevator” and established a small workshop to produce such elevators. Otis Elevator Company is still very well known in this field of technology. In 1854, Otis invented a publicity stunt to revive demand for the company’s products. In one of the exhibition halls in New York City, where was a high dome, there was a lifting platform between two supports 12 meters high. An assistant stood at the top of the building, holding a long sword in his hand. The inventor stood on a platform among barrels and crates in a tailcoat and cylinder. The steam engine was pulling the platform to the top, and assistant on Otis’s instructions cut the rope with his sword. The platform was rushing down, but after a meter or two, the automatic system was activated with a terrible screech and stopped the fall. Otis took the cylinder off and bowed to the public.

Three years later, Otis Steam Elevator Company installed its first passenger elevator in a five-story shop on Broadway. The elevator took up to five people and carried them at 20 centimeters per second. Our elevator is very similar to the one on Broadway, but it moves a little faster.

gudadm887

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