Ratio LMS Distant Signal

Have got 2 bits on the fret that cant see where to fit. First is
counerwieght other is arch shaped with hole at rounded top. Anyone know what
second bit is and where they go ?
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LMS journal seems to me the weights werent attatched to some posts, so decided to leave them (and the other bit) off.
Cheers, Simon
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The arch shaped piece with the hole is in all probability the fret for a fireman's call plunger sign.
The majority of signs that are affixed to signal posts, or near signals, are of significance to drivers detained at the signal awaiting its clearance. In the old Rule Book, Rule 55 dealt with the actions to be taken upon the detention of trains on running lines. This began:
"When a train has been brought to a stand owing to a stop signal being at Danger the Driver must sound the engine whistle, and, if still detained, the Guard, Shunter or Fireman must go to the signal box and remind the Signalman of the position of the train..."
At some locations the walk from the signal to the signal box would have been time consuming or hazardous. To overcome this, the 'Fireman's Call Box' was introduced. When the fireman pressed a plunger at the call box, an indicator in the signal box was operated. If the equipment had functioned correctly, a bell rang in the call box and the fireman was exempt from going to the signal box. The equipment was trialled and proved to be successful and rapidly spread. To indicate the presence of the fireman's call box, an illuminated sign was provided. At some signals, drivers were exempt from carrying out the requirements of Rule 55 due to there being a track circuit or other form of train protection that would automatically indicate the presence of the train to the signalman. This was denoted by an illuminated sign fixed at or near the signal concerned. Because these signs were illuminated, they needed their own separate lamp in addition to the signal lamp. The Midland Railway avoided the provision of separate lamps by fitting non-illuminated plates instead. By 1912, they had introduced the 'D' sign to denote that a fireman's call plunger was provided for the driver or fireman to remind the signalman of the presence of the train.
It was fixed roughly half way up the post, face to the running line, showing as a white D, with the "arch" to the side. The post to which it was affixed was usually painted black behind the sign and for a few inches above and below the D. It would not be used on a distant signal since there would generally be no requirement to stop at a distant.
Hope this helps.
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Perfect thank you - now found details in lms journal no 8, 'Sundry Semaphore Items' by L.G.Warburton (an excellent series). Had already discarded the track circuit sign, but now see that the other bit tried to describe is the D sign. Can see your point that wouldnt be required on a distant.
cheers, Simon
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