Improvements relating to Ornamenting, Printing, and Writing on Paper, Wood, Metals, Canvas, and other Materials.
Year: 1895

page_text: Date of Application, 4th Apr., 1895
Complete Specification Left, 3rd Jan., 1896-Accepted, 22nd Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements relating to Ornamenting, Printing, and Writing on
Paper, Wood, Metals, Canvas, and other Materials.
1, HENRY THACKER of 8 Stationers' Hall Court, Ludgate Hill, in the City of
London Manufacturing Stationer do hereby declare the nature of this invention to
be as follows:-
I take any kind of plain, tinted, or coloured paper which has been prepared or
manufactured in the ordinary way for being written upon and cover it wholly or
partly with a colouring matter which can be taken out or destroyed by means
of acids, alkalis, bleaching or other chemicals-or it can be covered in the course
of manufacture, and by means of a chemical liquid or ink, written, stamped or
printed the said coating or covering of colour can be taken out, leaving the
parts so written or printed upon bare, giving it the appearance of having been
written with white or other coloured ink according to the colour of the under
surface.
The same process can be applied to all kinds of paper, cards, boards, wood,
metals, canvas or other materials, which can either be coloured, painted or left
as manufactured and then covered wholly or in part with colour, which can be
acted upon by the chemical fluid or ink.
The same process can also be applied to the wholly or partial covering of
cheques and other documents and with the chemical fluid or ink, can be written,
stamped or printed upon, and which will prevent any alteration, fabrication or
forgery.
Dated this Fourth day of April 1895.
Improvements relating to Ornamenting, Printing, and Writing on
Paper, Wood, Metals, Canvas, and other Materials.
I, HENRY THACKER of 8 Stationers' Hall Court, Ludgate Hill, in the City of
London, Manufacturing Stationer 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 :-
I take any kind of plain, tinted or coloured paper which has been sized or
otherwise prepared or manufactured in the ordinary way for being written or
printed upon, and cover it wholly or partly with colouring matter made from
aniline or any other chemical, material or substance, with or without a mordant
to prevent it from being washed out, or the paper can be so covered in the
process of manufacture and which can only be taken out or destroyed by means
of acids, alkalis, bleaching or other chemicals and by the use of a liquid or ink,
written with a pen or stamped or printed upon the coloured surface with which
the paper is covered or partly covered-can be taken out, leaving the portion
or part of the paper as manufactured bare, giving it the appearance of having
been written, stamped or printed with white or other coloured ink. The liquid

page_text: -
or ink destroying or taking away all the covered or coloured surface with which
it comes into contact and leaving bare the under surface of the paper which
can be either white or tinted any particular colour before receiving the coating
of colour which is to be acted upon by the liquid or ink, so that the writing,
stamping or printing can be made to appear any colour that the paper is;-
thus white paper will show the writing white, primrose paper-primrose colour
and so on for any tint or colour that may be desired, the liquid or ink used
affecting the upper surface only, but not the under surface. It will be under-
stood that instead of the liquid or ink being written, stamped or printed on and
obliterating or covering a portion of the surface of the paper, as is the case
with any ordinary ink. The liquid or ink eats away or destroys only that portion
or part of the coloured surface so written, stamped or printed upon, leaving
uncovered the under surface of the paper.
Or, I may make combination colours for the upper surface made of two or more
colours; for instance-a green made of indigo or aniline blue and picric acid, when
written, stumped or printed. upon, with the chloride of lime fluid hereinafter
described will appear yellow-no matter what colour the under surface of the
paper is, the liquid or ink only destroying the blue colour leaving the picric acid
untouched.
The same process can be applied to cards, boards, wood, metals, canvas and
other materials, which can be painted, coated, or otherwise treated of one colour
or shade, or any number of colours or shades, or can be left in its manufactured
state without any colour or coating upon, and coated, covered or surfaced with a
colour or colours that can be erased, taken out or destroyed by the liquid or ink,
and any drawing, sketch or design can be made either by pen, brush, stamp,
stencil, die or block, the result being the reverse of any ordinary drawing or
design, as the drawing or other design will be the same colour, colours or shades as
the under surface is, thus giving effects in design, drawing or printing never before
attempted, and is particularly adapted for decorative purposes, whether for walls,
panels furniture, brackets, tables or other articles for use and ornainent.
The same process can also be applied to the manufacturing of cheques drafts
and other documents for the prevention of chemical alteration, fabrication or
forgery, as it is impossible to tamper with or alter anything that has been written
on a cheque or document prepared by this process and written stamped or printed
upon with the liquid or ink. The liquid or ink having destroyed that part of the
surface written upon it cannot be restored, so as to render it capable of any
addition or alteration being made.
For colouring or coating the paper and other materials, I take any of the aniline
colours and according to the shade of colour desired mix the same with hot water
to the shade or tone required, or I use indigo or any other colour or combination
of colours the same as is used in the manufacture of water colours according to
what is desired; I mix with the said colours when in solution gum, gall, glycerine,
acids, size or other ingredient necessary, or I may leave them out entirely.
For examples:- take half an ounce of aniline violet in crystals, which
I dissolve in one gallon of hot water, when thoroughly mixed, I. add two ounces of
gum in solution-or I may use four ounces of glycerine, or any of the other
ingredients as may be desired, but in most cases, it is not necessary to use
anything beside the colour and the water.
For a combination colour I take twenty fluid ounces of aniline blue soluble in
water or twelve ounces of indigo blue-in paste-and mix the same with one gallon
of hot water, when thoroughly mixed, I add one ounce or two ounces of picric acid,
according to the shade of green required; one ounce of picric acid will make a
darker shade of green; two ounces will make a lighter shade.
Other combinations can be made according to what is required, both for the
upper surface as well as for the under surface, but the above two examples fully
describe the process of making the colours, some of which will require a larger or a
smaller quantity of colour, according to the shade or tone of colour required.

page_text: The liquid or ink I make of any acid, alkali, bleaching ingredient or other
chemical diluted with water to such an extent, as will cause it, when written,.
stamped or printed with on the paper or other material, not to destroy the surface
of, nor eat into the paper or other material so acted upon; preferably for the
purpose I use a mixture of chloride of lime, which I prepare in the following
manner; To 7 lbs. of chloride of lime I add 6 gallons of distilled water, or failing
this, of water that has been boiled, and allowed to get cold: I well stir until all
has been dissolved and let it stand for 12 hours, after which it is filtered. I then.
add a small quantity of acetic acid, which can be perfumed or not. If the chloride.
of lime is newly made, then 6 lbs. will be sufficient. The liquid is then bottled
for use.
I wish it to be understood that I do not confine myself to the precise method of
mixing the colours, nor the exact proportion of ingredients for making the liquid
or ink as mentioned in this Specification, as the same may be modified without
departing from the principle of my invention.
Having now particularly described and ascertained the nature of my said inven-.
tion and in what manner the same is performed, I declare that what I claim is :-
The covering wholly or partly of paper, wood, metals, canvas and other
materials with a colour or colours made of aniline or other chemical or ingredient,
which can be taken out by means of acids, alkalis, bleaching or other chemicals.
without damaging the material, combined with the use of a liquid or ink, written,
stamped or printed upon such coloured or covered material, which leaves that
portion of the coloured surface so written, stamped, printed or ornamented bare,
exposing the under surface of the paper or other material, substantially as.
described.
Dated this Third day of January One thousand eight hundred and ninety-six..