Kirkby South Junction Signal Box Track Diagram 19 Jul 1946
Hand drawn diagram of Kirkby South Junction, dated 19 July 1946. This was part of a set given to me during a visit to Summit Colliery box. It is believed to have been used by a Guard. Interesting are the co-acting arms on the Up Inner Home signals for the Main line and the Mansfield Branch. A bridge used to cross the line thus needing those repeater signals. The bridge can be seen on the 25" OS map maps.nls.uk/geo/explore/side-by-side/#zoom=16&lat=53....
Also of interest is that the detonator placers 4 & 16 were not have been present early on. Lever 4 may have been either reserved for, or actually installed as a Mansfield Line distant under Annesley North Jn starter. Lever 1 was almost certainly the GN line distant at the same location.
Lever 16 as a Clearance/Fouling Bar on the Mansfield line is a surprise and exposes the fact that all those Track Circuits (TC) were not installed in 1916 when the Mansfield Line opened. Indeed the numbering of the TC's is odd - as if the Down Main TC "AA" was added later, and "A" split into "A1" & "A2" later too (see also 1966 diagram www.flickr.com/photos/192151030@N08/51940174531/in/album-...)
This was probably done to free up the GN facing points earlier after the passage of a train.
“Plunger” is a commonly used alternative term meaning Facing Point Lock (FPL), i.e. as in a lock bar plunging through the stretcher bar.
Perhaps someone has simply written ‘plunger’ beside those bar symbols at the facing points to distinguish them from the same symbol used for the other (e.g. clearance) bars?
When I visited Kirkby South the electric releases for the FPLs were "footboard studs" and were typically LNER’s preferred way of operating electric lever locks, instead of Block-shelf releases favoured by most other organisations.
Good for signalmen as it leaves both hands free for pulling.
Hated by S&T staff as often gummed up by polish etc.
The initial fitment of TC "A" would have been to allow the removal of the 40 foot fouling bars from the facing points, but was then subsequently split to ease operation as times got busier.
Any original GC TCs would have been numbered, but then LNER / BR(E) policy was to use letters, so it's hard to tell afterwards if any pre-date the 1923 Grouping.
However for Kirkby South Junction Peter Churchman seems to recall seeing mention that the only ‘early’ TC was on the branch outer homes?
In early 1960 Kirkby-in-Ashfield Central box closed, lever 27 became spare, 27 outer distant signal becomes the only distant on the Mansfield line, operated by lever number 26.
Kirkby South Junction Signal Box Track Diagram 19 Jul 1946
Hand drawn diagram of Kirkby South Junction, dated 19 July 1946. This was part of a set given to me during a visit to Summit Colliery box. It is believed to have been used by a Guard. Interesting are the co-acting arms on the Up Inner Home signals for the Main line and the Mansfield Branch. A bridge used to cross the line thus needing those repeater signals. The bridge can be seen on the 25" OS map maps.nls.uk/geo/explore/side-by-side/#zoom=16&lat=53....
Also of interest is that the detonator placers 4 & 16 were not have been present early on. Lever 4 may have been either reserved for, or actually installed as a Mansfield Line distant under Annesley North Jn starter. Lever 1 was almost certainly the GN line distant at the same location.
Lever 16 as a Clearance/Fouling Bar on the Mansfield line is a surprise and exposes the fact that all those Track Circuits (TC) were not installed in 1916 when the Mansfield Line opened. Indeed the numbering of the TC's is odd - as if the Down Main TC "AA" was added later, and "A" split into "A1" & "A2" later too (see also 1966 diagram www.flickr.com/photos/192151030@N08/51940174531/in/album-...)
This was probably done to free up the GN facing points earlier after the passage of a train.
“Plunger” is a commonly used alternative term meaning Facing Point Lock (FPL), i.e. as in a lock bar plunging through the stretcher bar.
Perhaps someone has simply written ‘plunger’ beside those bar symbols at the facing points to distinguish them from the same symbol used for the other (e.g. clearance) bars?
When I visited Kirkby South the electric releases for the FPLs were "footboard studs" and were typically LNER’s preferred way of operating electric lever locks, instead of Block-shelf releases favoured by most other organisations.
Good for signalmen as it leaves both hands free for pulling.
Hated by S&T staff as often gummed up by polish etc.
The initial fitment of TC "A" would have been to allow the removal of the 40 foot fouling bars from the facing points, but was then subsequently split to ease operation as times got busier.
Any original GC TCs would have been numbered, but then LNER / BR(E) policy was to use letters, so it's hard to tell afterwards if any pre-date the 1923 Grouping.
However for Kirkby South Junction Peter Churchman seems to recall seeing mention that the only ‘early’ TC was on the branch outer homes?
In early 1960 Kirkby-in-Ashfield Central box closed, lever 27 became spare, 27 outer distant signal becomes the only distant on the Mansfield line, operated by lever number 26.