Web forming method
AssigneeE. I. Du Pont de Nemours and Company
InventorDonald O. Niederhauser
Life of this patent
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AssigneeE. I. Du Pont de Nemours and Company
InventorDonald O. Niederhauser
Estimating the term…
A method of traversing a strand between two spaced rows of strand-restraining elements moving together in the same direction in the same plane to form a web is implemented by a pair of strand-engaging members associated with each row of strand-restraining elements for slideably engaging the strand and moving it in alternate traverses toward one and then the other row while forming a loop in the strand during each tranverse. The second member of the pair of strand-engaging members travels faster than the first and catches up with it as it crosses the row of strand-restraining elements. The loop is brought into a plane parallel to the plane of the rows of strand-restraining elements. Means are provided for disengaging the loop from the strand-engaging members and depositing the loop around the strand-restraining elements as soon as the loop is moved beyond the row of elements.
In a method for traversing a strand between two spaced rows of strand-restraining elements moving together in the same direction in the same plane to form a web, each traverse including the steps of feeding the strand from a supply to a location out of the plane of the rows of strand-restraining elements and between them, and thence toward one of the rows, engaging the strand between said location and said strand-restraining elements and moving the strand toward the other row of strand-restraining elements in a transverse plane angled to the plane of the strand-restraining elements while simultaneously moving the strand away from said transverse plane to form a loop in the strand defined by sides and an end, and bringing said loop into a plane substantially parallel to the plane of the strand-restraining elements, the improvement comprising:
In a method of traversing a strand between two spaced rows of strand-restraining elements moving together in the same direction in the same plane to form a web, wherein said strand is fed from a supply between the rows towards one row and is traversed in a plane transverse to the plane of the strand-restraining elements toward the other row, a loop defined by sides and an end being formed in the strand during each traverse;
Dependencies are inferred from the claim text.