IMPROVEMENTS IN APPARATUS FOR MAKING PAPER BAGS, WRAPPERS, AND ENVELOPES
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by Richard Woods at the Office of tho
Commissioners of Patents on the 14th June 1880.
RICHARD WOODS, of Manchester, in the County of Lancaster, Overlooker.
"IMPROVEMENTS IN APPARATUS FOR MAKING PAPER BAGS, WRAPPERS, AND
ENVELOPES."
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My said Invention relates to apparatus for automatically making bags, wrappers,
and envelopes from a continuous web of paper fed into the machine. The
mechanism is supported upon a suitable framing, in front of which is placed the
continuous web or roll of paper to be used. The said paper is led over suitable
guides between two revolving rollers, one of which is furnished at intervals in its
length with knife edges or saw teeth which divide the paper web into strips of any
required breadth. On each side of these knife edges or saw teeth, and standing at
about an equal height from the roller, are projections or indenting edges, which,
as the paper passes beneath or over them, indent it a short distance from the cut
edge. Behind these rollers the continuous strips of paper encounter the pasting
apparatus, which consist preferably of a revolving disc or segment of a disc,
through small perforations in the periphery of which the paste is forced from the.
axis, which may be made hollow for this purpose. Any other suitable means for
applying the puste may however be used. The paste is applied to each strip of
paper between the hereinbefore referred to indented line and the outer edge, and
the paper in its further progress is led past a curved fence, the spirally shaped
sides of which turn each edge of each paper strip inward on itself, presenting the.
pasted sides outwards. The strips then pass between another pair of rollers, the
periphery of one of which is provided with a longitudinal range of prickers and
also with a longitudinal projecting edge so arranged as that the prickers will
perforate the strips across at certain intervals, corresponding to the length of bag
required, while the projecting. edge will similarly indent the paper at corresponding
intervals, the perforations and indentations succeeding each other. After passing
through these rollers-the-free or leading end of the strip is arrested by a guide or
fence, and tho-strip is folded over at the cross-indentation and pressed down by
another pair of rollers-on-the-pasted edges so as to form a bag with a pasted seam-
at each side, and a seamless bottom. A rapidly revolving pair of rollers then-seize
the end of the bag so formed and pull it away from the strip, severing it at the

page_text: cross perforations, and depositing it in any suitable receptacle, from whence it is
removed in a finished state, or otherwise the bags so formed may be fed directly
into a printing machine.
In making open wrappers the pasting and folding apparatus may be dispensed
with, and means for applying gum substituted; and in the manufacture of envelopes 5
the prickers may, if desired, be arranged so that the cross perforations will meet at
an angle in the centre of the strip to form the usual folding over flap, and a double
cross indenting edge should be used in conjunction therewith.