Woburn - Waterloo Interlocking 674

Woburn Signal Box

This page documents the interlockings controlled by the Woburn signal box in 1953. The area controlled extended from Woburn to Waterloo. Later, in 1968, automatic signalling was installed on the Gracefield Branch and also controlled from Woburn.

The diagram on this page is based on S & I No. 674 issued in May 1953. I believe that the full Woburn - Waterloo interlocking came into use on this date. No. 630 (November 1946), which showed a panel at Waterloo, was cancelled by No. 674.

View the text of No. 674.

Scroll horizontally to view the complete diagram.

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Woburn Interlocking - Levers

1 Switchout Control Lever
3 Up Outer Home From Industrial Branch (Hutt)
6 Up Home From Up Main
7ABC Up Home From Industrial Branch
13AB Up Platform Starting From Up Main (Woburn)

14A Fixed Red
14B Shunt & Starting From Loop (Woburn)
16 Switchout Control Lever
18ABC Up Directing
33 Permission Lever

42 Permission Lever
68AB Down Starting From Down Main
69A Down Shunt & Starting From Loop (Woburn)
69C Down Shunt & Starting From Sidings (Woburn)
70 Down Shunt & Starting from Up Main (Woburn)

74ABC Down Directing
76 Switchout Control Lever
78 Shunt

Routes

Woburn Up Main
NS to Branch Main
NS to Up Main
NS to Loop (Woburn), LS to Loop Occupied or Sidings (Woburn)
NS to Up Main

Stop
LS to Up Main
Waterloo Up Main
NS to UP Main, MS to Loop (Waterloo), LS to Loop Occupied (Waterloo)
No. 33 Hutt Workshops switchlock siding

Switchlock points & trap loop & sidings (Woburn)
NS to Down Main, MS to Branch Main
LS to Down Main or Branch Main
LS to Down Main or Branch Main
LS to Branch Main

NS to Down Main, MS to Loop (Woburn), LS to Loop Occupied (Woburn)
Woburn Down Main
LS to Up Main Occupied or Down Main Loop or Sidings (Woburn)

Waterloo Interlocking - Levers

18ABC Up Directing
19 Shunt From Down Main
21AB Up Starting From Up Main
22 Fixed Red
24 Up Shunt & Starting from Loop (Waterloo)

50 Permission Lever
53 Permission Lever
77 Down Shunt & Starting from Loop (Waterloo)
79 Down Shunt & Starting from Up Main
80AB Down Platform Starting from Down Main (Waterloo)

82 Shunt From Storage
84 Down Home
85 Shunt
87 Switchout Control Lever

Routes

NS to Up Main, MS to Loop (Waterloo), LS to Loop Occupied (Waterloo)
LS to Up Main or Down Main (Waterloo)
NS to Up Main, LS to Storage
Stop
LS to Up Main

Switchlock points & traps loop & sidings (Waterloo South)
Switchlock points & trap loop & sidings (Waterloo north)
LS to Up Main
LS to Down Main
NS to Down Main

LS to Down Main

LS to UP Main, Loop or Siding (Waterloo)
Waterloo Down Main

Last Updated: Wed Mar 14 08:11:39 NZDT 2007