We have three elevators in our building. One is usually used for freight, people moving in and out. One is usually in an idle state as a back-up. Then, a primary elevator is in constant operation. I know about them because I live on the top floor, “ding.”
Sometimes, the elevators get out of kilter, stopping a little short, or slowing, etc. I feel pretty safe in the elevator, and not just because a certificate says that it was inspected. It is because the basic design is sound, and our building people keep them maintained.
We all rely upon the elevator maintenance professionals for our safety, so I took a picture of them working in the shaft. They are like miners, in a way. They operate in the dark with unnatural light. It is dirty and greasy in the shaft. I sure would not want to know what they find in the bottom.
They are upgrading controls and safety devices now, so I am feeling pretty good about that.
“The History of the Elevator
Primitive elevators were in use as early as the 3rd century BC, operated by human, animal, or water wheel power. From about the middle of the 19th century, power elevators, often steam-operated, were used for conveying materials in factories, mines, and warehouses.
In 1853, American inventor Elisha Otis demonstrated a freight elevator equipped with a safety device to prevent falling in case a supporting cable should break. This increased public confidence in such devices. Otis established a company for manufacturing elevators and patented (1861) a steam elevator. In 1846, Sir William Armstrong introduced the hydraulic crane, and in the early 1870s, hydraulic machines began to replace the steam-powered elevator. The hydraulic elevator is supported by a heavy piston, moving in a cylinder, and operated by the water (or oil) pressure produced by pumps.
“One killed, one injured in Vietnam elevator accident
Last updated: 6/3/2010 11:05
A woman was crushed to death and another injured when an elevator malfunctioned in the central Vietnamese province of Khanh Hoa on Wednesday morning.
Witness Tran Thi Ngoc Lai, chief accountant of the State Treasury in Dien Khanh District, said that she and director Nguyen Thi Thu Ha and cashier Tran Thi Huong took the elvator to the first floor from the ground floor of the treasury’s headquarters.
However, the lift didn’t stop at the first floor, but at some 40 centimeters above, Lai said, adding that she then quickly got out of the lift, whose door was always left open.”