Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,675 pages of information and 247,074 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
Presumably this was British Pneumatic Railway Signal Co
1904 Fitted automatic signals on the London and South Western Railway near Grateley; the low-pressure power plant was at Grateley, and the air for working the signals was conveyed by pipes from the supply at Grateley. The signals were worked by air, the valves being opened and closed electrically, controlled by the track circuit.
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