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 218
ELECTRIC RAILWAYS 91 opening is provided with a tight-fitting door which excludes all dirt,dust, and moisture. In the ends of the frame are fitted heads 1and 2, which provide bearings for the ends of the armature. Each … Fig. 86. Diagram of Parts of Motor Driven from Pressure bearing is provided with two oil-rings which secure proper lubricationof the shaft. Oil holes are provided for filling the oil^ wells, and thelocation is such that there is no danger of flooding the interior of themotor with oil. A passageway…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-415-182.webp)