Illustrated description of this machine, 40 levers, uses the Stevens locking system actuated by the latch rod.
Johnson interlocking machine
RR Gaz
1892
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Johnson interlocking machine switches
Engineering Index Backfile | 1889
The weurpel interlocking machine
Engineering Index Backfile | 1892
Specifications for power interlocking machine
Engineering Index Backfile | 1919
Engineering Index Backfile | 1929