Passenger Elevators. E-book. Formato PDF - 9780243810604

Un ebook di Thomas E. Brown
edito da Forgotten Books , 2017

Formato: PDF - Protezione: nessuna

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Passenger Elevators. E-book. Formato PDF. The machine was controlled by a brake acting on the guide strips. This elevator was not provided with any automatic con trolling devices, could move at great speed, and the passengers were entirely at the mercy of the operator. It soon fell into disfavor, and the field was left to the slower steam elevator.