Corrugated Paper and similar Fabrics or Materials.
Year: 1887

page_text: [Communicated from abroad by EDWIN RUTHVEN WIGGIN, of Boston, Massachusetts,
United States of America, Manufacturer.]
Corrugated Paper and similar Fabrics or Materials.
1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co. Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature of
this invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The object and purpose of my machine is to produce upon sheets of paper or other
like fabric, a multiplicity of short corrugations protruding from both sides of the sheet.
My machine is not intended and does not act to emboss the paper in the proper signi-
fication of the term "embossing"! that is to say, it does not produce protuberances or
depressions upon or in the paper by any stretching and consequent thinning of the
material of the sheet. Its effect is to bend the paper to the desired form without
diminishing its thickness. At the same time upon the plane or non corrugated portions
of the sheet are produced wrinkles or gathers which compensate for the diminution in
general length of so much of the sheet as is corrugated.
In the accompanying drawings Fig. 1 is a side elevation partly in section of my
machine. Fig. 2 is an end view thereof. Fig. 3 is a partial section on the line x x of
Fig. 1. showing the method of corrugation. A.A are the uprights and B, the cross
piece of the frame. Cis the bed. Journaled in said uprights are two horizontal
shafts D and E. On the end of shaft E is a belt wheel F, whereby said shaft E is
rotated. Upon the shafts D and E are mounted series of disks F F placed side by
side and secured by a feather G entering a suitable seat in the shaft.
rigidly held in place by nuts H screwed on the shafts.
Said disks are
The edges of the disks F are beveled so that between consecutive disks is formed a
groove or channel I. Upon the periphery of each disk are formed teeth J, with
intermediate cavities K. The disks F on shaft D are placed so that their teeth J enter
the cavities K in the disks F on shaft E as shown in Fig. 2. It is important to

page_text: observe however that the teeth do not exactly fit the cavities, but that in all cases, the
said cavities are wider than the bases of the teeth, at their outer portions. Conse-
quently the paper in passing between the pairs of disks on the opposite shafts is not
squeezed or compressed by the teeth into the cavities, as for example, a punch forces
flexible material into a die,--but is bent to acquire the form. The paper being free to
render is pushed, so to speak, by the tooth into the cavity. Its thickness as shown in
Fig. 2, remains unimpaired. It is not stretched to fit the matrix and in this sense,
it differs materially from paper that is "embossed" as the operation of the machine
differs from the embossing operation.
In arranging the disks. upon the shafts, I place each tooth of every disk opposite a
space or cavity in the adjacent disk, so as not to flute or simply form continuous
corrugations in the fabric passed between the rolls, but to break up the corrugations
or form alternate elevations and depressions in the material not only lengthwise by the
successive teeth and spaces of the disks but also crosswise and obliquely by the
alternation of tooth and space and adjacent disks.
:
It is obvious that instead of making the rolls of a series of toothed disks, they might
be cast solid or milled out from a single piece to give the general surface described;
or a plain roll may have rounded teeth set into it. The machine is shown with the
disks on one shaft placed directly opposite the disks on the other but I do not limit
myself to this arrangement, as I have accomplished very satisfactory results when the
teeth on the disks of one shaft were disposed opposite the grooves or channels between
the disks on the other shaft, the corrugations of the material being strongly marked
and broken up and the fabric, shirred fulled or wrinkled between the extremes of
elevation and depression.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed as communicated to me by my Foreign
Correspondent I declare that what I claim is :-
1. A machine for corrugating paper or other flexible material containing a pair of
rolls, each roll being provided with projections and intermediate cavities or depressions,
the said cavities being larger than the projections so that said projections fit loosely
therein and the cavities in one roll being disposed opposite to and receiving the
projections on the other roll.
2. A machine for corrugating paper or other flexible material containing a pair of
rolls, each roll having on its surface independent projections with alternating cavities
or depressions, the said projections being arranged in series longitudinally and
transversely the rolls and the projections on one roll entering the cavities or depressions
on the other.
3. A machine for corrugating paper and other flexible material containing inter-
meshing rolls formed of separable toothed disks with intervening circumferential
grooves, the whole constructed and arranged substantially as shown and described.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.