Treadle

For the device that detects that a train axle has passed a particular location, see Treadle (railway).
Dictation using a treadle-powered cylinder phonograph, circa 1897

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 (as in the treadle pump), or to turn wood lathes (as in the pole lathe). In the past, treadles have been used to power a range of machines including sewing machines, looms, wood saws, cylinder phonographs and metal lathes. Along with cranks, treadmills, and treadwheels, they allowed human and animal power of machinery in the absence of electric machinery.

Sewing machines

Many of the early sewing machines were powered by a treadle mechanism. The treadle was operated by pressing down on it with a foot, or both feet, to cause a rocking movement. This movement spins a large wheel on the treadle frame, connected by a thin leather belt to a smaller driving wheels on the sewing machine.

A tailor in Chad with a treadle sewing machine

See also

Look up treadle in Wiktionary, the free dictionary.


This article is issued from Wikipedia - version of the 11/3/2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.