THE SIGNAL BOX

OVERSEAS

SALT RIVER JUNCTION
South African Railways

by John Hinson

Interior of Salt River Junction box
Photograph from the collection of Dr J W F Scrimgeour

Salt River Junction, in Cape Town, was controlled from a hydraulic power lever frame dating from around 1910. The levers are interlocked with each other through tappet locking in the vertical tray at the front of the frame.

Lever functions visible, on levers that have been "reversed", are:

5
SIGNAL
DOWN
SUBURBAN
DISTANT

8.7.6
6
SIGNAL
DOWN
SUBURBAN
HOME
7
SIGNAL
DOWN
SUBURBAN
STARTING

NIL OR 13
8
SIGNAL
DOWN
SUBURBAN
ADVANCE

43 OR 49 OR 52
OR 52.46
20
POINTS
UP MAIN
SIDING No3
22
POINTS
UP MAIN
TO YARD

Trains on this four-track main line were signalled by the four British-built Tyer's One-Wire Three Position block instruments above the frame, and a variety of signal repeaters from the same manufacturer can also be seen.

Although the manufacturer of this frame has not been identified, it bears great similarity to the Spanish-built Bianchi-Servettaz frame at Seville Plaza da Armas in Spain.

About the photographs



Comments about this article should be addressed to John Hinson