• WordNet 3.6
    • v treadle operate (machinery) by a treadle
    • v treadle tread over "the brick maker treadles over clay to pick out the stones"
    • n treadle a lever that is operated with the foot
    • ***
Webster's Revised Unabridged Dictionary
    • Treadle (Biol) The chalaza of a bird's egg; the tread.
    • Treadle The part of a foot lathe, or other machine, which is pressed or moved by the foot.
    • ***
Century Dictionary and Cyclopedia
    • n treadle A lever designed to be moved by the foot to impart motion to a machine, as a lathe, sewing-machine, or bicycle. It consists usually of a form of lever connected by a rod with a crank; but other forms employ straps or cords for transmitting the power. In the bicycle the treadle is practically the crank itself. In the organ, particularly the pipe-organ, and many machines, the drop press, etc., where the treadle does not impart a rotary motion, but only starts, stops, or otherwise controls the machine or instrument, it is more properly a pedal, but in the reed-organ the foot-levers by which the feeders are operated are called either treadles or pedals. See cuts under pegger, potter, reed-organ, ripple, sewing-machine, and spring-hammer.
    • n treadle The tough ropy or stringy part of the white of an egg; the chalaza: so called because formerly supposed to be the male sperm. Compare tread, 4.
    • treadle To operate a treadle; specifically, in playing a reed-organ, to operate the feeders by means of the foot-levers or pedals.
    • ***
Chambers's Twentieth Century Dictionary
    • Treadle the part of any machine which the foot moves
    • ***


Webster's Revised Unabridged Dictionary
OE. tredyl, a step, AS. tredel,. See Tread
Chambers's Twentieth Century Dictionary
A.S. tredan; Ice. trodha, Ger. treten.


In literature:

Each harness is connected with a treadle.
"Makers of Many Things" by Eva March Tappan
Women often own and use small hand-machines, but the treadles are always used by men only.
"The Soul of a People" by H. Fielding
This platform could be raised and lowered by the foot, by means of a treadle.
"Rural Life and the Rural School" by Joseph Kennedy
Sometimes a boy sits up top and shifts things, sometimes they have six or eight foot treadles.
"Letters from China and Japan" by John Dewey
The girl rose, walked over to it, and put her foot on the treadle.
"Under Padlock and Seal" by Charles Harold Avery
I offered to assist by putting my foot on the treadle, but he said it was not necessary.
"Aliens" by William McFee
She put her foot to the treadle and started the wheel.
"Czechoslovak Fairy Tales" by Parker Fillmore
The treadle had been in use for two years before a rival pointed out that it might have been patented.
"The Invention of the Sewing Machine" by Grace Rogers Cooper
The treadles remained connected, but could be operated in the forward direction only.
"Harper's Round Table, May 7, 1895" by Various
Press back on bottom of slanted stick and place your treadle against the stick.
"Deadfalls and Snares" by A. R. (Arthur Robert) Harding

In news:

Foot Treadle, 1988 Stock number: 28539.
A reciprocating lathe that uses a springy pole to return the treadle and drive cord to the start position for the power stroke.
Antique Singer Sewing machine, treadle, $150.