Magnetic actuator construction for a circular knitting machine

Details Magnetic actuator construction for a circular knitting machine Magnetic actuator construction for a circular knitting machine

1974-11-20

1976-10-26

Stein, Mervin

Textiles: knitting

Independent-needle machines

Circular

66154A, D04B 1578

Patent

active

039876462

ABSTRACT:
The movement of each of a plurality jacks or rocking pressers of a ferromagnetic material a circular knitting machine between a knitting and a non-knitting position is accomplished by the cooperation of the fields of a permanent magnet and a selectively actuable electromagnet which are magnetically isolated from each other. The portion of the jack where such fields intersect may be recessed to accomplish jack positioning with minimum expenditure of magnetomotive force. The airgap in the pole structure of the permanent magnet and in the separate core of the electromagnet are coaxially disposed, with the electromagnet being suitably located either inside or outside the core of the electromagnet. Where outside mounting is used, the permanent magnet may be disposed on the periphery of the circular bed of the machine along with the jacks, while the electromagnet is radially spaced therefrom.

REFERENCES:
patent: 2809508 (1957-10-01), McDonough
patent: 3283541 (1966-11-01), De Cerjat
patent: 3365916 (1968-01-01), Ribler et al.
patent: 3518845 (1970-07-01), De Cerjat
patent: 3535892 (1970-10-01), Schmidt et al.
patent: 3605448 (1971-09-01), Ribler
patent: 3710594 (1973-01-01), Bourgeois
patent: 3771332 (1973-11-01), Knourek et al.
patent: 3855819 (1975-12-01), Sawazaki
patent: 3861173 (1975-01-01), Kinkelin

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