Shed-forming device for a weaving machine
AssigneeN.V. Michel Van de Wiele
InventorsJames Anthony Graham, Matthew Theobald, Bram Vanderjeugt, Frederick De Medts
Life of this patent
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Abstract
A shed-forming device has elastically deformable selection elements (1) (28a)-(28f) which can be placed in an undeformed position or in a deformed position, electromagnetic selectors (2) which can be actuated in order to place or keep each selection element (1) in successive weaving cycles in one of said positions, and presenting means (3) in order to mechanically deform selection elements (1) in the direction of a selector (2) in each weaving cycle into a presenting position in which they are kept at a distance from the selector (2) by a stop (4), and also relates to a method for positioning selection elements of a shed-forming device in this manner.
Claims20
Shed-forming device for a weaving machine comprising
- a number of elastically deformable selection elements, it being possible to optionally place each selection element in an undeformed position or in a deformed position in order to determine the position of at least one warp thread,
- a number of electromagnetic selectors which can be actuated in order to place or keep each selection element in successive weaving cycles in one of said positions, so that the warp threads are positioned in accordance with a predetermined weaving pattern, and
- one or more presenting elements designed to exert a mechanical force on a number of undeformed selection elements in each weaving cycle, as a result of which said selection elements are deformed in the direction of an associated selector,
- wherein the presenting elements are designed to mechanically deform the selection elements until they reach a presenting position in which they are kept at a distance from an associated selector by a stop.
Method for determining the position of elastically deformable selection elements of a shed-forming device for a weaving machine by means of electromagnetic selectors, in which each selection element can, as desired, be placed or held in an undeformed position or in a deformed position in order to determine the position of at least one warp thread, comprising, in successive weaving cycles:
- deforming the undeformed selection elements under the effect of a mechanical force in the direction of an associated selector, and
- actuating the selectors in order to exert a magnetic force on a number of the selection elements in order to place and/or keep these selection elements in the deformed position,
- further comprising mechanically deforming the undeformed selection elements into a presenting position in which each selection element is kept at a distance from an associated selector by a stop.
Dependencies are inferred from the claim text.