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Pa′per-tube ma-chine′.

Fig. 3541 illustrates a machine for forming paper-tubes, which are severed into lengths suited for making bags, the bottoms being formed at a subsequent operation.

Arkell's paper-tube machine

A continuous roll of paper is wound upon the flanged cylinder B, and is thence drawn upwardly on the roll C, passing between the furrowed roller F, which is partially immersed in a trough containing paste or mucilage, and the rubber-covered roller D, by which its edge is pasted: it thence passes over the guide-roller E, and is conducted down ward along the curved plate I, which is concave on its upper side, the concavity gradually increasing as it approaches the blades L. one on each side; two pressure-rollers h, suspended from adjustable bars K, serve to hold up the edges of the strip until it is acted on by the blades L, which fold the edges over. the folding process being completed by a second pair of blades n, attached to adjustable arms O. It next passes between the rollers Q Qa geared together at one end, the upper one of which has a series of grooves r r corresponding to projections u v on the lower, which form creases in the tube, while at the same time incisions are made by the cutters t t; at each side: the pasted edges are thus attached and the bottom shaped. The tube next passes over a loop or guide Y attached to pivoted arms by which the tension is regulated as it is presented to the action of the cutters R Ra: one of these (R) is stationary and the other (Ra) attached to a plate S, vibrated by means of a rock-shaft: between the two the tube is cut at the proper points into lengths suitable to form the bag. See also paper-bag machine. [1628]

Machine for sizing paper-twine

1877.

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James Arkell (1)
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