Information about Treadle
A treadle [from OE tredan = to tread] is a part of a machine which is operated by the foot to produce reciprocating or rotary motion in a machine such as a weaving loom (reciprocating) or grinder (rotary). Treadles can also be used to power water pumps (treadle pump)
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Railways
On a railway, a treadle is a device that detects the passing of a train, a bit like a track circuit and might be used to put a signal to 'stop'.Sewing machines
Many of the early sewing machines were operated by a treadle mechanism linked to the machine by a leather belt.See also
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pump is a device used to move liquids or slurries. A pump moves liquids from lower pressure to higher pressure, and overcomes this difference in pressure by adding energy to the system (such as a water system).
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A treadle pump is a human-powered pump designed to lift water from a depth of seven meters or less. A treadle is a lever device pressed by the foot to drive a machine, in this case a pump.
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A track circuit is a simple electrical device used to detect the presence or absence of a train on a railroad track, used to inform signallers and control relevant signals.
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A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train drivers/engineers. The driver interprets the signal's indication and acts accordingly.
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On a railway, a treadle is a device that detects the passing of a train, a bit like a track circuit. The earliest treadles were mechanical devices which looked a bit like a pedal, hence the name, although later electrical and electronic versions lack this physical feature.
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