Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 474
6. are probably the most important parts with which theengineer has to deal. Great care should be taken thatthe brushes set squarely on the commutator and thatthe surface of the brushes and commutator are assmooth as possible. It is a good plan, and in some ELECTRICITY EOR ENGINEERS 55 cases the… … -^ZS FIGURE 27. cause uneven wear across the length of the commutatorbars. In most machines the armature bearing is leftso that there is more or less side motion, which, whenthe armature is running, causes a constant changing ofthe position of the brushes and commutator. 56 ELECTRICITY FOR…
