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 99
ried and supported by the structureshown at g, which is secured to the brass spool by the two hexagon-headed bolts as shown in Fig. 78. This construction enables themoving elements as well as the coils to be made up separately asoccasion demands, and independently of the rest of the mechanism,and… … jewel screw. The side of the tube is used to support the fixedmagnetic vane b. The moving iron vane c is fastened to the staff i,which also carries the pointer e, which movesover the divided scale. The vibrations of e aredampened by the vane /, Fig. 79, which is forcedto move in the nearly…
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-graphophonepaten07unit-281-195.webp)
