Experiences with steel inserts of different composition; carbon inserts proved to be more advantageous because they do not need special lubrication of wire; experiments carried out on trackless trolley cars in Prague.
Carbon inserts for trackless trolley car wires
Kohleneinsaetze fuer Obus-Stromabnehmer
Verkehrstechnik ; 22 , n 3
1941
2 pages
Article (Journal)
German
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