Textiles: knitting – Independent-needle machines – Circular
Patent
1994-07-14
1995-06-20
Colvert, John J.
Textiles: knitting
Independent-needle machines
Circular
66218, 66222, D04B 1578
Patent
active
054252520
ABSTRACT:
The needle selection device has multiple selectors arranged in axial grooves formed in the skirt of the needle cylinder, each selector arranged below a needle and oscillatable in a radial plane of the needle cylinder from an active position, in which a butt protrudes radially from its groove, for the engagement of the butt with cams for actuating the selectors arranged around the needle cylinder to move the selectors along their groove in the needle cylinder so as to activate the overlying needle, to an inactive position, in which the selector is positioned in its groove in the needle cylinder so that it does not interfere with the selector actuation cams. The device has selector extraction elements to transfer the selectors from the inactive position to the active position and selection elements to transfer the selectors from the active position to the inactive position or to keep them in the active position. Each selector is provided with a selection element protruding radially from the grooves of the needle cylinder and oscillatable in the plane of arrangement of its selector. The selection element is made of a material that can be magnetized, and an electromagnet is provided for magnetizing the selection element and magnetic elements interact with the selection element after magnetization to make it oscillate into an idle position, in which the selection element engages a selector sinker cam laterally facing the needle cylinder, or into an active position, in which the selection element does not interfere with the sinker cam.
REFERENCES:
patent: 3955380 (1976-05-01), Piccino et al.
patent: 3990270 (1976-11-01), Paepke
patent: 4770009 (1988-09-01), Mozer
Colvert John J.
Josif Albert
Modiano Guido
S.F.I.M. S.r.l.
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