Hipp Reversible Disk Signal
The ''hippsche Wendescheibe'' or '' Hipp’sche Wendescheibe '', is a historical railway signal. The automatic and visual signal served as distant signals and home signals. Its main advantage was that energy to move the signal was provided locally, while the low power impulse to move the signal was transmitted electrically from the signal box, thus minimizing cumbersome and unreliable energy transmission over distance. Description History This type of signal was developed by the inventor and watchmaker Matthäus Hipp and first used in Winterthur in 1862. The signal is named after him and was in use long before the wing signals. How it works The Hipp reversible disc signal is mounted on a hollow cast column. This carries a sheet metal disc about 1m in diameter. Until 1877 the disc was painted red on both sides with a white border, but later on one face red with a white diagonal bar and on the reverse white and black, partly chequered, partly with a diagonal bar, or simply paint ...
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