Wednesday, 13 September 2017

Block Shelf Stabilisation

Tuesday 12th Sept.

Off to Broadway again - 3 of us plus Andy D who has been slaving away at Toddington machining the couplings to join the tappet blades to the electric lock bars, but more of this later.

The Block shelf  in the signal box needed additional support to remove its tendency for lateral movement and a central column for vertical support. This central support doubles up as a cable duct to cover the multitude of wires that will eventually feed down from the shelf. Here's the wooden box support which has been assembled and painted since lat week - note that it has a hinged cover to provide access from the window side

Some holes needed in the floor to feed the cabling through, John P in action with a 25 mm dia cutter - 2 holes should suffice - after measuring , a pilot hole tells us that we are missing the joists below

Then into position and adjust for vertical. A couple of screws through the Block shelf  and two into the floor to  secure it into place.

Having now got a pretty sturdy vertical set up we now need a bracket to stop horizontal movement. Here's one we made earlier

This has been attached to the side of the Block shelf and the central window frame and provides a very rigid fixing - it is now impossible to move the shelf in any direction even with a hefty push.

Meanwhile down below in the locking room Malcolm and Andy D were checking the fit of the newly machined couplings and pins to the tappet blades at each position where an electric lock is to be fitted.  

The bars which operate the locks and attach to these couplings  have to be lined up for the coupling holes to be drilled and dowel pins fitted - note that these are then  secured with split pins 

This jigsaw to be continued.

I found a spare  signal wire adjuster before departing for Broadway this morning and took a shot to hopefully give a better view of what one looks like. The central screw has a length of about 2 feet and provides  a significant amount of adjustment. Operated by a removable handle on the top (not shown) which raises or lowers  the looped bar  below. 



  1. Really interesting blog, the locking looks a real work of art and wondered how the signal wires were adjusted. Any timescales for erecting the signals on the approach to Broadway from the south?
    Keep up the great works.
    regards, Graham Handley

  2. Most of the signalling work will wait until the track and ballasting is completed. Bear in mind that although the opening of the station is 30th March next year the signals will not be operational. The final commissioning of the signal box is not expected until.approx a year later.

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  4. As already mentioned, a really interesting blog, and good pictures to augment. Regards, Paul.

  5. Just a quickie. I have posted the question on the Steam loco blog but, how are the train crews getting on with the banner repeaters at Winchcombe not being lit now that some services are running after dark? Regards, Paul.

  6. Their reply noted. Doesn't seem to be a problem.
    Regards - Curly