Electromagnetically controllable coupling means for the drive sh

Details Electromagnetically controllable coupling means for the drive sh Electromagnetically controllable coupling means for the drive sh

1983-06-13

1984-11-06

Jaudon, Henry

Textiles: weaving

Warp manipulation

Shedding

139455, D03C 100

Patent

active

044806647

ABSTRACT:
There is provided an electromagnetically controllable coupling means between the drive shaft and a cam element of a textile machine. A latch mounted on the cam element and rotatable with it is biasable by a spring to interact with grooves in said drive shaft. Two rocker arms rotatable about fixed axes are each provided with a strikers and are swingable back and forth between a first position in which said striker holds the latch out of interaction with the grooves and a second position in which the latch is released in order to interact with said grooves. A pair of anchors influenced by program directed electromagnets serve to hold the said rocker arms in the first position. A stopping arrangement prevents further rotation of the cam means when the latch moves from one into the other of the aforementioned rotation positions. Each anchor attached to the appropriate arm is in the first position of the rocker arm presented proximate to the pole face of its appropriate electromagnet. The electromagnets are provided with a permanent magnetic field and a charge winding which when, activated causes the anchors, because of the spring biasing action upon the arm, to move out of contact with said electromagnet.

REFERENCES:
patent: 3817292 (1974-06-01), Doehler et al.
patent: 3835894 (1974-09-01), Speich
patent: 4427035 (1984-01-01), Hintsch et al.

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