A NEW SUBSTITUTE FOR CARDBOARD
Year: 1881

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex, for an
Invention of "A NEW SUBSTITUTE FOR CARDBOARD." A communication
from abroad by Dumoulin, Péquegnot et Roux, of Lyon, France.
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 12th December 1881.
HERBERT JOHN HADDAN of Kensington, Middlesex. "A NEW SUBSTITUTE
FOR CARDBOARD." A communication from abroad by Dumoulin, Péquegnot
et Roux, of Lyon France.
This Invention consists in a new material applicable as a substitute for
cardboard.
It is composed of a sheet of ordinary cardboard obtained in one piece by
casting, or by the superposition of several thin sheets, and of one or more sheets
of veneer attached to one or both sides of the cardboard which serves as a core,
the two or three sheets being glued together, passed between. rollers and then
polished. Or the veneer may form the core and to each side of which a sheet of
cardboard is attached each face of this triple sheet being then covered with a sheet
of veneer, so that the product consists of five sheets glued together, rolled and
polished. The cardboard forming the core may be replaced by a sheet of tissue.
The wood chosen for this purpose is preferably of an aromatic kind, and the fibres
of the upper sheet may have any desired position with regard to the fibres of the
lower sheet.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Herbert John Haddan in the Great Seal Patent Office on the
10th June 1882.
HERBERT JOHN HADDAN, of Kensington, Middlesex. "A NEW SUBSTITUTE
FOR CARDBOARD." A communication from abroad by Dumoulin, Péquegnot,
et Roux, of Lyon France.
This Invention consists in the manufacture and application of a new material,
which is produced in large sheets and may be used as a substitute for cardboard,
compared with which it has the advantage of greater strength, while its beauty,
elasticity, and particularly its impermeability render it superior to other materials
hitherto used for similar purposes.
This material, which may be called wood-cardboard, is composed of thin sheets
of cardboard and wood superposed and united in a certain order and by certain
processes. The centre or core is formed of a sheet of ordinary cardboard of any
convenient thickness obtained either directly by allowing paper pulp to run into
moulds or by superposing and gluing together several sheets according to the
intended thickness, as is generally done in the manufacture of cardboard. On each
side of this sheet of cardboard is then applied, a thin sheet of wood, (of_the_same_
dimensions as the cardboard) glued, rolled, and polished. These sheets of wood
are preferably cut from cylindrical blocks by a knife arranged to cut the latter into
a spiral having the whole width of the block and reaching to its core or axis, in a
manner similar to a roll of paper.
Sometimes I apply the thin sheet of wood only to one side of the cardboard, at
other times the wood-cardboard is formed with a thin sheet of wood as a core
which is covered on each side with a sheet of cardboard, so as to invert the order
of composition first described.
Sometimes I apply to one side or to both sides of the compound sheet thus
prepared another sheet of thin wood, so that the product is composed of four or
five sheets. For special purposes, such as packing silk goods, the cardboard forming
the core in the first process may be replaced by a sheet of smooth woven fabric in
order to allow the compound sheet to be folded without breaking, which would not
be possible with a wood core, however thin it might be. The thin sheets of wood
contained in a sheet of wood-cardboard may be placed so, that the fibres of one
sheet cross those of the other, or are parallel with them, preferably the former in
order to equalize the resistance in various directions, and render them less subject
to atmospheric variations.
The wood-cardboard made as described, is applicable to a great variety of
purposes but more especially for making workboxes, or cases, trunks, travelling
boxes, book covers, playing cards, tickets, and generally for all purposes, where at
present ordinary cardboard is used.
CLAIM.
The manufacture and application of the new material, herein before called wood-
cardboard, substantially as described.
In witness whereof I the said Herbert John Haddan have hereunto set my
hand and seal this Thirtieth day of May A.D. 1882.
HJ HADDAN (ra)