Aug n 607 p 323-325: Necessity for use of tokens is questioned; single lines can be controlled by Block system alone. Oct n 609 p 377-379: Method of using track circuit instead of treadles and how cancellation and switchingout are achieved.
Non-token operation of single lines
Ry. Engr.
Railway Engineer ; 51 , n 607, 609 ; Various pages
1930
6 Figs.
Aufsatz (Zeitschrift)
Englisch
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Starting signal on single lines by the single line token
Engineering Index Backfile | 1930
Switching-out single-line token instruments
Engineering Index Backfile | 1924
The operation of single lines of railway
Engineering Index Backfile | 1929
The operation of single lines of railway
Engineering Index Backfile | 1930
The operation of single lines of railway
Engineering Index Backfile | 1929