Talk:Chair Types

Where did the information about special chairs for cant come from? I have never heard of such chairs and there would have to be different ones for different radii and a whole range to lead in and out of a curve. Heritagejim (talk) 16:48, 18 August 2015 (UTC)

See Boyd J I C, 1975 The FR page 378. "On sharp curves a special chair with thickened base was used to carry the outer rail." I suppose variations in the angle of the sleepers allowed for varying cant as the radius of the curve changed. Hence your points about transitions may not have been a practical problem. MarkTemple (talk) 20:05, 18 August 2015 (UTC)

In that case can you say so on the page. It gives the statement creditability. Heritagejim (talk) 14:13, 19 August 2015 (UTC)

Adzing

The timber sleeper can be "adzed" at a suitable angle to change the angle of a standard chair to a more suitable angle for the necessary cant. FarleyBrook (talk) 00:23, 20 August 2015 (UTC)

Can we have a reference as to where that information came from? Once again I have not heard of that. Changing the angle of the chair is not what matters; it is raising the chair on the outer rail. The usual method is just to lift & pack the whole sleeper. Heritagejim (talk) 05:41, 20 August 2015 (UTC)

At the moment, wikipedia says nothing about the adzing of railway sleepers, though there is an article about the adze itself FarleyBrook (talk) 09:16, 20 August 2015 (UTC)

Illustration

I think the illustration shows doublehead rail not bullhead rail. If you look closely the head looks smaller than the foot. This was commonly the case once the head had suffered wear. The clue is the Spooner Huddart patent fish plates. These only fit on doublehead rail. MarkTemple (talk) 16:53, 13 January 2016 (UTC)