Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 298
)cr and lower limits of travel, 260 ELEVATORS 211 usually to one of the guides, so that the car in passing pushes backa lever and thereby opens or closes a circuit as required. For highspeed three of these switches are used at each limit of travel: thefirst to slow down, the second to stop, and the… … Fig. IBo. Gurney Type of Traction ElevatorCourtesy of Gurney Elevator Company Oil Buffers. In addition to the above safeguards, oil buffersare used below the car and the counterpoise weight, one type beingshown in Fig. 166. The device consists of a plunger hanging ver-tically downward from the car…
Electrical engineering
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