THE HISTORY OF POLE VAULTING Elisha Graves Otis didnt correct the elevator, he invented something perhaps more important---the elevator brake-which made skyscrapers a practical reality. Born on a farm or so Halifax, Vermont, the youngest of six children, Otis made several attempts at establishing businesses in his early years. However, chronically poor health direct to running(prenominal) financial woes. Finally, in 1845, he tried to change his stool with a move to Albany, New York. There he worked as a master mechanic in the bedstead mill of O. Tingley & Company.
He remai ned about three years and during that time invented and upchuck into use a railway safety brake, which could be controlled by the engineer, and ingenious devices to run rails for four-poster beds and to improve the operation of turbine wheels. From old-time times through the Middle Ages, and into the 13th century, man or animal power was the driving force behind hoisting devices. By 1850 steam and hydraulic eleva...If you want to get a profuse essay, order it on our website:
BestEssayCheap.comIf you want to get a full essay, visit our page:
cheap essay
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.