A New or Improved Composition for Treating Paper, Cardboard, Wood, or other Materials of a similar nature to render such Material Waterproof and the Markings with Writing Inks thereon Indelible, also applicable for Use in the Manufacture of Paper, Cardboard and the like.
Year: 1896

page_text: Date of Application 28th Oct., 1896
Complete Specification Left. 24th July, 1897-Accepted, 18th Sept., 1897
PROVISIONAL SPECIFICATION.
A New or Improved Composition for Treating Paper, Cardboard,
Wood, or other Materials of a similar nature to render such
Material Waterproof and the Markings with Writing Inks thereon
Indelible, also applicable for Use in the Manufacture of Paper,
Cardboard and the like.
I, DAVID CUMMING SIMPSON, of No. 27 Spring Gardens, Abbey Hill in the City of
Edinburgh, Engraver and Printer do hereby declare the nature of this invention to
be as follows:-
A New or Improved Composition for Treating Paper Cardboard, Wood or other
Materials of a Similar Nature to Render such Material Waterproof, and the Markings
with Writing Inks thereon Indelible. The Composition or Solution constituting the
Invention consists of a Chemical Preparation of Alum, Chlorate of Potass, Caustic
Soda made Soluble in Water, Kaolin or China Clay, and Lac or Shellac made Soluble
by Amironia in Water. I use these Materials in or about the following proportions,
viz. -I mix and dissolve in one Gallon of Water 6 oz. Alum, 1 oz. Chlorate of
Potass, and 1 oz. Caustic Soda, and of this Solution I take as much as will dissolve
Kaolin or China Clay to the consistency of Cream; to this Solution or Composition
I add another solution of Lac or Shellac dissolved by Ammonia in Water in the
proportion of 2 lbs. to the Gallon of Water, mixing these Solutions together to a
thin consistency.
The Solution is applied by immersion or by coating with a brush or Sponge or it
may be incorporated in the Pulp in the Manufacture of Paper, Cardboard, or Manilla
Paper: the effect in any case being that the Material becomes Waterproof and the
Ink or other Writings, Printing or Marking Materials used thereon becomes
Indelible in Water, thereby enabling said Material and Writings to be exposed to wet
or damp without being affected thereby.
141 071 dave of October 1896
COMPLETE SPECIFICATION.
New or Improved Composition for Treating Paper, Cardboard,
Wood, or other Materials of a similar nature to render such
Material, Waterproof and the Markings with Writing Inks thereon
Indelible, also applicable for Use in the Manufacture of Paper,
Cardboard and the like.
I, DAVID CUMMING SIMPSON, of 31, Gayfield Square, late of 27 Spring Gardens,
bbey Hill, in the City of Edinburgh, Engraver and Printer, do hereby declare the

page_text: 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:--
A New or Improved Composition for Treating Paper, Cardboard, Leather, Wood or
other Materials of a Similar Nature to render such Materials Waterproof and the
Markings with Writing Inks thereon Indelible.
The Composition or Solution constituting the Invention consists of a chemical
preparation of Alum, Chlorate of Potass, Caustic Soda, made soluble in Water, Kaolin
or China Clay, White Lead or Flake White, and Lac or Shellac made soluble by
Ammonia in Water. I use these Materials in or about the following proportions,
viz. I mix and dissolve in one Gallon of Water, 6 ounces Alum, 1 ounces Chlorate
of Potass, and 1 ounce Caustic Soda, and of this Solution I take one 6th of a Gallon,
or as much as will dissolve the following, viz. :-9 ounces Kaolin or China Clay,
6 ounces White Lead or Flake White, to the consistency of cream. Of this Solution
I take one sixth of a gallon and mix with it one third of a gallon of the following
solution, viz. -2 lbs. of Lac or Shellac dissolved by 12 ounces of Ammonia to a
gallon of water.
The Solution is applied by immersion, by drawing the sheet-gently through the
Solution, or by coating with a Brush or Sponge either by hand or Machine or it may
be incorporated in the Manufacture of Paper, Cardboard, or Manilla Paper at the
Pulp Stage, in the proportion of one half gallon of the Solution to one Gallon of
Pulp, the effect in any case being that the Material becomes Waterproof, and the
ink or other Writings, Printing or Marking Materials used thereon becomes Indelible
in Water, thereby enabling said Material, Writings, Printing or Markings to be
exposed to Wet or Damp without being affected thereby.
Note. Lac inentioned above, is a resinous substance found on certain trees in the
East, and Shellac is Lac spread into thin plates, after being melted and strained, but
both substances are one and the same.
Having thus described my said Invention and shown how the same may be carried
into practice, what I claim is :-
A New or Improved Composition for Treating Paper, Cardboard, Wood or other
Materials of a similar nature to render such Materials Waterproof, and the Markings
with Writing Inks thereon Indelible, substantially as set forth above.
Dated this 92rd day of Tal.. 1907
DAVID C. SIMPSON.