treadle – מילון אנגלי-אנגלי
treadle
v.
put a treadle in motion, pedal
n.
pedal or other mechanical device continually moved by the foot to impart motion
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 (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.
treadle
Noun
1. a lever that is operated with the foot
(synonym) pedal, foot pedal, foot lever
(hypernym) lever
(hyponym) accelerator, accelerator pedal, gas pedal, gas, throttle, gun
(part-holonym) organ, pipe organ
Verb
1. tread over; "the brickmaker treadles over clay to pick out the stones"
(hypernym) tread, trample
2. operate (machinery) by a treadle
(hypernym) operate, control
(derivation) pedal, foot pedal, foot lever
Treadle
(n.)
The part of a foot lathe, or other machine, which is pressed or moved by the foot.
(n.)
The chalaza of a bird's egg; the tread.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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