Textiles: weaving – Warp manipulation – Shedding
Patent
1991-07-03
1993-05-11
Falik, Andrew M.
Textiles: weaving
Warp manipulation
Shedding
D03C 100
Patent
active
052092704
ABSTRACT:
A control device for rotary dobbies in which a key has a transverse groove of width equal to the thickness of a control ring with which it cooperates plus the length of travel undergone by the key in its insertion into or withdrawal from radial grooves in a big end of a main crank arm or in a drive shaft. The control ring has an elliptical shape and is fixed onto a operating lever which, pivoted on a minor axis of an ellipse and retained in its rest position by a V-shaped spring, is made to rock to one side or the other about the axis of symmetry of the spring by a pusher rod. The pusher arm is operated by a cam mechanism and moved by a needle selector controlled by a programmer, to act on one of two valleys provided in a rocking sector on an operating lever symmetrically about an axis of symmetry.
REFERENCES:
patent: 4452281 (1984-06-01), Speich
patent: 4493346 (1985-01-01), Speich
patent: 4625767 (1986-12-01), Schwarz
patent: 4905738 (1990-03-01), Kleiner
Falik Andrew M.
Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
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