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.