Electromagnetic device for controlling dobbies and other weaving systems
AssigneeS.A. des Etablissements Staubli
InventorsJoseph Palau, Jean-Paul Froment
Life of this patent
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Abstract
The present invention relates to electromagnetic devices for controlling dobbies and other weaving systems, wherein the control unit which contains the electro-magnets is borne by an oscillating frame on which is mounted an equal number of selectors associated with a spring which tends to move them away from the associated poles of magnetic attraction. Each selector acts selectively on the actuating hooks of the dobby, and a fixed stop ensuring its return into applied position against the magnet upon return into a non-actuating position. The device is applicable to the control of a dobby with double swinging levers or to the control of a rotating dobby.
Claims5
An electromagnetic control device for controlling each pair of actuating hooks of the weaving system of a loom including heddles and including a pattern reading device operative in cycle with the loom to deliver electrical output signals to the control device, and the weaving system including a force amplifier system cooperatively associated with each pair of actuating hooks and including drawing means connected between the force amplifier systems and the heddles, said control device comprising:
- (a) a chassis supported on the loom adjacent to the force amplifier systems and operative to oscillate between two opposed positions in cycle with the loom;
- (b) an electromagnet corresponding with each pair of actuating hooks and each electromagnet being coupled to receive output signals from the pattern reading device, the electromagnets being mounted on the chassis to oscillate therewith and each electromagnet being located opposite an associated pair of actuating hooks;
- and
- (c) a selector member corresponding with each electromagnet and associated pair of actuating hooks, the selector members being pivotally mounted on the chassis and oscillating therewith, and each selector member being pivotable between an engaged position in which it is held against its electromagnet when energized and a released position wherein it is pivoted away from its electromagnet when de-energized, and each selector member having engaging means operative in some of said opposed positions of the chassis and in some pivotal positions of the selector means to selectively engage and displace one or the other of the hooks of the associated pair.
Dependencies are inferred from the claim text.