Improved type designed by London Transport for trolley-buses retains fundamental principle of original patent "O.B" type head and uses renewable carbon insert in shoe; shoe is modified to take increased length of carbon insert which is reversible, and embodies improved method of fixing shoe in head. (See also Transport World v 99 n 3185 June 13 1946 p 500-1)
Current-collecting trolleyhead
Passenger Transport J
Passenger Transport Journal ; 95 , n 2405
1946
2 pages
Aufsatz (Zeitschrift)
Englisch
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CURRENT COLLECTING APPARATUS FOR COLLECTING CURRENT AT UPPER PORTION
Europäisches Patentamt | 2022
|Current-collecting trolleyhead
Engineering Index Backfile | 1946