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| Shunting into forward section on rotary block 21/04/2014 at 11:31 #59198 | |
jc92
3631 posts 
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Hi, can anyone familiar with Rotary block confirm if there is/was anyway to shunt into forward section without having to use the sealed emergency release everytime to cancel train on line everytime? "We don't stop camborne wednesdays" Log in to reply |
| Shunting into forward section on rotary block 29/04/2014 at 13:10 #59730 | |
kbarber
1712 posts |
Technically, no. But it was done. The procedure at one location I know of (unofficial but accepted by all concerned including inspectors) was that as soon as Train Entering Section had been sent, the signalman at the rear end pressed his 'Line Clear Cancel' button and the instrument was never put to Train On Line. When the shunt was withdrawn, the advance end man could press his LC Cancel and restore the block to normal. I strongly suspect rotary instruments would never be provided where it was anticipated there would be any regular shunts into forward section and the problem only arose when changes to traffic patterns led to the need arising in later years. Log in to reply |
| Shunting into forward section on rotary block 29/04/2014 at 15:22 #59740 | |
JohnMiller
321 posts |
Here is the block instrument in Woodhouse Junction, where we used to get Shunt Into Forward Section from Rotherwood when they were crossing electrics over going to the depot 
Post has attachments. Log in to view them. Last edited: 29/04/2014 at 15:22 by JohnMiller Log in to reply |
| Shunting into forward section on rotary block 29/04/2014 at 15:57 #59745 | |
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kbarber
1712 posts |
Lovely piece of kit John, but not Rotary Block (or certainly not the Rotary Interlocking Block that I'd imagine Joe is referring to). What you've got there is some kind of permissive instrument, I suspect. (Tyers? I'm not as good on my instruments as I'd like to be.) A nice set of rotaries can be seen here http://www.signalbox.org/gallery/lm/napsbury.php 2nd photo; each instrument consists of two upright cases (the one with the circular brass plate on the front is the pegger) and a bell, so there are 4 complete sets here.
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| Shunting into forward section on rotary block 30/04/2014 at 20:33 #59854 | |
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john_s
31 posts |
I was under the impression that both signalmen had to press their line clear cancel buttons at the same time - or have I got that wrong?
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| Shunting into forward section on rotary block 30/04/2014 at 21:25 #59861 | |
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kbarber
1712 posts |
" said:I was under the impression that both signalmen had to press their line clear cancel buttons at the same time - or have I got that wrong? I'd have to ask to make absolutely sure but I'm fairly certain it's not the case. I must admit I'd have tended to agree with you in the past, but of course cancelling off would normally have both signalmen at their instruments together and co-operating simultaneously so it'd happen that way fairly naturally. However I got the information on shunting ahead on rotaries from a relief signalman who did it, via the notebook he made up with box details in. That said quite clearly that the procedure adopted was to give TES and immediately press the LC cancel button, so I have to conclude simultaneous operation wasn't necessary. I will ask the question if you want absolute certainty. Log in to reply The following user said thank you: john_s |
| Shunting into forward section on rotary block 30/04/2014 at 22:42 #59864 | |
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Signalhunter
177 posts |
" said:Hi,Do you not sign Box A or T, (on the L&Y signalling school at N.R.M.(for everyone else.)), Joe? :silly: Log in to reply |
| Shunting into forward section on rotary block 01/05/2014 at 06:37 #59869 | |
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jc92
3631 posts
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" said:" said:I do, but i dropped a clanger on tuesday working A. shunting into forward section to get a train into the refuge siding at A, then having to Faff around getting the block back to normal. according to phil, you could use BBI to get train on line, and have a subsidiary shunt ahead signal which is released only by train on line. (which we don't have). the main reason I was asking is for the new timetable I've written which uses this movement.Hi,Do you not sign Box A or T, (on the L&Y signalling school at N.R.M.(for everyone else.)), Joe? :silly: "We don't stop camborne wednesdays" Log in to reply |
| Shunting into forward section on rotary block 03/05/2014 at 20:56 #60010 | |
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john_s
31 posts |
kbarber wrote: Quote: I will ask the question if you want absolute certainty.I'm not going to lose sleep over it, but I am curious. And just to confuse matters further, I've just had a quick look at three Rotary Block instruments. On one of them, the Line Clear Cancel release 'latches' in the release position after being picked up by the solenoid and is dropped after replacing the commutator to Line Blocked. On the other two it does not latch (but I have not yet examined the innards in enough detail to see why this is so). There seem to be quite a few variations of these instruments... edit to add: that one instrument sticks with the line clear lock released, seems to be a fault caused by residual magnetism in the solenoid. So it is not significant to this discussion. Last edited: 04/05/2014 at 08:30 by john_s Log in to reply |