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  Yellow Triangle Midford Yellow Triangle Signalling
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  Introduction
Why Midford?
The Plan
Prototype Photographs
Locomotives
Signalling
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Bibliography

Midford

Signalling

Locking Chart

Distances No. Description Released By Work Locking Work Normal Lock Backlock Released By Locks
Released By After Use
Tablet Out To Special Tracks Treadle Levers Detection Released By
Mech. Point Bolts 'In' Treadle
1171 1 Down Distant 4.3.2 1                        
357 2 Down Home 7 2 12.13                      
10 3 Down Starting 7 3 12.13 3     A     8 (7) LV B    
470 4 Down Advanced Starting   4 5 Push                      
35 357 5 Pull Shunt From Platform to Up Line Signal 8 5 Pull 12.13.14 (11(11)) 5 Pull           (8) (7) C   15 & Up Plunger Till 13 P&R Up Plunger
206 5 Push Shunt From Down Line Disc   5 Push 4.7.8 5 Push Bath                 Comm: At 'Tablet Out' Till 3 Or 5 Pull Or 13 P&R
  6     6                        
98 7 F.P.L on 8   7 5 Push 8                      
98 8 Down Facing Points   8 5 Push 7                      
  9     9                        
  10     10                        
  11 Release Lock to Ground Frame 8 11 12.15 11                   15 & Up Plunger Till 13 P&R. Up Plunger
668 12 Shunt By Up Outer Home   12 2.3.5 Pull.11.14 12                 C Up Plunger Till 13 P&R
162 13 Up Starting   13 2.3.5 Pull 13 Bath               A  
206 14 Up Inner Home 8 14 5 Pull.12 (11(11)) 14 Bath                 COMM: AT 'TABLET OUT' TILL 3 OR 5 PULL OR 13 P&R
668 15 Up Outer Home 14 15 11 15               13 P&R C Up Plunger Till 13 P&R
1668 16 Up Distant 13.14.5 16                        
Up Plunger               (12 OR 15) & 13 P&R   5 Pull. 11 Till 12 OR 15 P&R
Up Block Comm   Syx Inst. Plunged   E 12.15     12 OR 15 P&R    

 
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