IMPROVEMENTS IN PREPARING MATERIALS FOR ROOFING AND ANALOGOUS PURPOSES
Year: 1885

page_text: Purposes.
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I, JOHN STORER, of Sydney Street, Glasgow, in the County of Lanark, North
Britain, Ph.D., Chemist, do hereby declare the nature of my said invention
for "IMPROVEMENTS IN PREPARING MATERIALS FOR ROOFING AND ANALOGOUS
PURPOSES," to be as follows, that is to say :—
:
My said Invention has for its object to prepare improved materials advanta-
geously applicable for roofing purposes especially in hot climates, and also suitable
for other applications.
In carrying out my Invention I employ a paper or millboard of a suitable
thickness and I form in its pores and on its surface an insoluble, silicate. I first
saturate the paper with a solution of silicate of soda or silicate of potash, and
afterwards I apply a solution of a soluble salt such as a chloride or sulphate of
calcium, magnesium, strontium, barium, or zinc; or I apply lime, magnesia, strontia,
baryta, or zinc oxide, in powder or made up as a milk or wash. By these means
an insoluble silicate is formed as required, in and on the paper or millboard; and
the soda or potash or salt thereof is removed by washing.
The roofing material prepared in this way may be white or of any desired color;
and one advantage of it when used in some situations consists in the fact that rain
water cannot dissolve anything from it, and can be stored for domestic use in a
very pure state.
Dash day of At 18e

page_text: I, JOHN STORER, of Sydney Street, Glasgow, in the County of Lanark, North
Britain, Ph.D., Chemist do hereby déclare 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, that is to say :-
My said Invention has for its object to prepare improved materials advanta-
geously applicable for roofing purposes especially in hot climates, and also suitable
for other applications.
In carrying out my Invention I-employ a paper or millboard of a suitable
thickness and I form in its pores and on its surface an insoluble silicate. I first
saturate the paper with a solution of silicate of soda or silicate of potash, and,
afterwards I apply a solution of a soluble salt such as a chloride or sulphate of
calcium, magnesium, strontium, barium, or zine; or I apply lime, magnesia, strontia,
baryta, or zinc oxide, in powder or made up as a milk or wash. By these means
an insoluble silicate is formed as required, in and on the paper or millboard'; and
the soda or potash or salt thereof is removed by washing.
The roofing material prepared in this way. may be white or of any desired color;
and one advantage of it when used in some situations consists in the fact that rain
water cannot dissolve anything from it, and can be stored for domestic use in a
very pure state. :
↓
The quantities. or proportions of the chemical substances used will vary in
. different cases, and will depend on the thickness and porosity of the paper or
'millboard employed. After a single treatment of any paper or millboard it may be
tested to ascertain whether the pores have been sufficiently filled to render it
watertight, and if required the treatment may be repeated.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is :-
The rendering of paper or millboard suitable for roofing and analogous purposes
by forming an insoluble silicate in or upon it substantially as herein before
described.
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