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 Passenger Transport J v 95 n 2405 Aug 9 1946 p 108-9)
Current-collecting trolleyhead
Transport World
Transport World ; 99 , n 3185 ; p 500-501
1946
2 pages
Article (Journal)
English
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CURRENT COLLECTING APPARATUS FOR COLLECTING CURRENT AT UPPER PORTION
European Patent Office | 2022
|Current-collecting trolleyhead
Engineering Index Backfile | 1946