Method and apparatus for the butt-end joining of lengths of rubb

Details Method and apparatus for the butt-end joining of lengths of rubb Method and apparatus for the butt-end joining of lengths of rubb

1987-06-04

1989-09-19

Wityshyn, Michael G.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563041, 1563047, 156421, 156502, B29D 3000, B65H 6906

Patent

active

048678236

ABSTRACT:
For the purpose of carrying out the butt-end joining of two lengths of a rubberized fabric, particularly reinforced with cords disposed parallel at the edges to be joined, there is provided a stitching device which comprises two superimposed pairs of frusto-conical rollers, having their lateral surfaces tangent to a horizontal plane, and with opposing pairs of rollers to a vertical plane, their axes of rotation being symmetrically inclined with respect to the tern of planes comprised of a first horizontal plane, or the resting plane for the lengths to be joined, a second vertical plane that contains the seam-line of the lengths, and a third vertical plane, orthogonal to both the two above horizontal and vertical planes.
Owing to the inclination of the axes, the pairs of vertically opposite rollers grasp each border of the length to be joined, on both of the surfaces, in correspondence with a narrow transverse portion of the fabric. Thereupon, they take the narrow portion of the border and press it against the facing border, shifting the narrow portion progressively and with continuity, along the entire length of the same-line.

REFERENCES:
patent: 2088889 (1937-08-01), Wikle
patent: 3909341 (1975-09-01), Moscovita
patent: 4057455 (1977-11-01), Klose
patent: 4231836 (1980-11-01), Ljungqvist et al.
patent: 4454000 (1984-06-01), Schlemmer
patent: 4478672 (1984-10-01), Precht

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