RAILWAY RING GEARS
These giant ring gears transmit power from electric motors to the driving wheels on the new passenger locomotives between New York and Washington D.C. U.S.A
Picture No
10155981
Media ID
44863773
Size
4870px x 3728px
(1.6MB)
Credit
Mary Evans Picture Library
Source
Unattributed photograph for Barnaby's Studios Ltd
Date
1930s
