Improvements in Copying Books and Sheets by Means of which Duplicate Copies may be Sim without the of Intermediate She of Carbonised or other kinds of Prepared Paper.
Year: 1888

page_text: Improvements in Copying Books and Sheets by Means of which
Duplicate Copies may be Simultaneously Produced During the
Operation of Writing without the Use of Intermediate Sheets of
Carbonised or other kinds of Prepared Paper.
We ROBERT WILLIAM BRUMBY, and SLMPSON CLARKE both of Baker Street Hull in
the County of York Printers and Lithographers do hereby declaro tho naturo of this
invention to be as follows:-
:-
The object of our invention as is indicated by the title is to produce simultaneously
at one operation duplicate copies of writing without employing intermediate sheets of
prepared paper or material.
We effect this object by preparing the surface of one side of the paper to be
written upon with a coating of Plumbago or other suitable material or composition.
The paper so coated may afterwards be passed between callender Rolls by means of
which the coating may be rendered less liable to rub off.
A sheet of paper thus prepared, when placed with the prepared surface downwards
next to a sheet of plain paper may be written upon and by using pressure similar to
that employed in the ordinary process of mainifold writing a copy or facsimile of the
writing will be transmitted from the prepared under surface of the paper so written
upon to the upper surface of the plain paper underneath.
In this way Books may be made with alternate sheets of prepared and plain paper
one or both of which may be perforated. The plain sheet being by preferance
used for despatch & the prepared sheet being retained. Sheets thus prepared and
arranged are applicable to a variety of purposes such as for example Tradesman's
Counter Bill head or check Books, Letter Books, Order Books, Copy Invoice Books,
Wharehouse despatch or departmental day Books Message or Memorandum forms and
the like.
Dated this 2nd day of November 1888.
R. HEBER RADFORD,
Agent for the Applicants

page_text: Improvements in Copying Books and Sheets by Means of which
Duplicate Copies may be Simultaneously Produced During the
Operation of Writing without the Use of Intermediate Sheets of
Carbonised or other kinds of Prepared Paper.
We ROBERT WILLIAM BRUNDY, and SIMPSON CLARKE, both of Baker Street, Hull,
in the County of York, Printers and Lithographers, do hereby declare the nature
of our said Invention for "IMPROVEMENTS IN COPYING BOOKS AND SHEETS BY
MEANS OF WHICH DUPLICATE COPIES MAY BE SIMULTANEOUSLY PRODUCED DURING
THE OPERATION OF WRITING WITHOUT THE USE OF INTERMEDIATE SHEETS OF CAR-
BONISED OR OTHER KINDS OF PREPARED PAPER," and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following.
statement
The object of our Invention, as is indicated by the title is to produce simultaneously,
at one operation, duplicate Copies of writing without employing intermediate sliects of
prepared paper or material.
We effect this object by preparing the surface of one side of the paper to be
written upon with a coating of Plumbago or other suitable material or composition.
The paper so coated may afterwards be passed between callender Rolls by means of
which the coating may be rendered less liable to rub off.
A sheet of paper thus propared, when placed with the prepared surface downwards
next to a sheet of plain paper, may be written upon and by using pressure similar
to that employed in the ordinary process of mainifold writing a copy or facsimile of
the writing will be transmitted from the prepared under surface of the paper so
written upon to the upper surface of the plain paper underneath.
In this way Books may be made with alternate sheets of prepared and plain paper;
one or both of which may be perforated. The plain sheet being by preference used
for despatch and the prepared Sheet being retained. Sheets thus prepared and
arranged are applicable to a variety of purposes, such as for example, Tradesmen's
Counter Bill lead or Check Books, Letter Books, Order Books, Copy Invoice Books,
Warehouse Despatch or Departmental Day Books, Message or Memorandum Forms
and the like.
We have found in practice that Plumbago, Lamp Black, Red Raddle and a variety
of other suitable colouring matter may be employed for coating the paper either in

page_text: a powdered or liquid form and the coating may be effected either by hand or by
mechanical appliances, for example; when large quantities of the paper are required
it may be manufactured in continuous lengths and the colouring matter may be
laid on by means of a roll or rollers brush or brushes or otherwise as may be
most expedient, such roll or rollers brush or brushes revolving in the colouring
matter which they transmit to the surface of the paper on one side as it passes
over them, the necessary pressure being communicated by means of a top roil, or
cylinder, which may be heated or otherwise as occasion may require. The machinery
and process thus employed being generally similar to that for printing paper, calico
and other textile fabrics.
To prevent the colouring laid on the surface of the paper from coming off too
freely, wo fix it, or partly fix it, by applying a coat of wax, or paraffin, or a com-
position such as is employed in the manufacture of what are called wax candles,
such material being employed either separately, or compounded together, or either
of them, or all of them in combination with lard or other suitable fatty
substance. By means of the lard, or other fatty substance, the wax, or other
compound, is kept moist.
As a modification of the last described mode of preparing the paper after the
colouring matter has been applied, a coating or film of diluted glycerine is then
applied, and when sufficiently dry, or set, then a final coating of wax, paraffin, or other
composition as last described may be used.
When glycerine is used as described in the modification, the wax, or other composi-
tion is employed without the addition of lard or other fatty substance.
As an alternative mode of preparing the paper, dyed wax (so called) may be
used (instead of colouring being applied separately to the paper before the wax is
put on) in conjunction with (a) glycerine diluted, or (b) Lard or other fatty matter.
The glycerine would be applied to the paper first, but if lard or other fatty matter
were used, it would be applied with the wax, being mixed with the wax.
Having now particularly described and
tion and in what manner the same is to
claim is;
ascertained the nature our said Inven-
be performed we declare that what wo
(1.) Preparing Sheets of paper or similar material to be used for writing upon, so
that at one operation a transcript, or copy, of such writing, or other memoranda,
may be produced on a duplicate sheet, without the employment of an intermediate
sheet of carbonised, or other prepared paper, or material substantially as and for
the purposes herein described.
(2.) Preparing the surface of one side of sheets of paper, or similar material,
for the purposes described in claim 1, with Plumbago, Lamp Black, Red Raddle or
other suitable colouring matter, and afterwards fixing, or partially fixing, such colouring
matter by applying a coat of wax, or paraffin, or a composition such as is employed in
the manufacture of what are called wax candles, such material being employed
separately or compounded together substantially as and for the purposes herein
described.
(3.) The employment, or admixture, of lard, or other fatty substance, in combination
with the wax, or paraffin, or other composition used, for fixing, or partially fixing, the
colouring matter on one side of sheets of paper or similar material, as described in
claim 2, substantially as and for the purposes herein described.
(4.) As a substitute for the lard, or other fatty substance, described in claim 3,
the employment of a coating, or filin of diluted glycerine over the coloured surface
or sheets of paper, or other material, as described in claim 2, previous to applying
the coat of wax, paraffin, or other compositions therein described, for fixing, or
partially fixing such colouring matter, substantially as and for the purposes herein
described.
(5.) Preparing the surface of one side of sheots of paper, or similar material, for
the purposes described in claim 1, with dyed wax, (so called) in lieu of the colouring

page_text: matter described in claim 2, such (so called) dyed wax being kept moist, by the
employment of a coat or film of diluted glycerine laid on the paper before the
wax is applied, or by the admixture of lard or other fatty matter in combination with
the (so called) dyed wax, substantially as and for the purposes herein described.
(6.) Improvements in Copying Books and Sheets by means of which duplicato
Copies may be simultaneously produced during the operation of writing without the
use of intermediate sheets of carbonised or other kind of prepared paper, substantially
as and for the purposes herein described.