IMPROVEMENTS IN PAINTS OR PRE- PARATIONS FOR COATING SURFACES
Year: 1865

page_text: LETTERS PATENT to Ernest Leslie Ransome, of Ipswich, in the County
of Suffolk, for the Invention of "IMPROVEMENTS IN PAINTS OR PRE-
PARATIONS FOR COATING SURFACES."
Sealed the 26th January 1866, and dated the 3rd August 1865.
PROVISIONAL SPECIFICATION left by the said Ernest Leshe Ransome
at the Office of the Commissioners of Patents, with his Petition, on the
3rd August 1865.
I, ERNEST LESLIE RANSOME, of Ipswich, in the County of Suffolk, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN PAINTS
OR PREPARATIONS FOR COATING SURFACES," to be as follows:-
This Invention has for its object improvements in paints or compositions
for coating surfaces. For this purpose I mix with a soluble silicate a pig-
ment, such as carbonate of lead, oxide of zinc, carbonate or sulphate of
baryta or a pigment-like substance, such as ground glass or stone; and I
combine with the said mixture a material which decomposes gradually the
soluble silicate, and causes it to deposit an insoluble silicate. I prefer to
employ lime water as the cheapest and most effectual re-agent for the
purpose. Aluminate of soda, alum, and other substances may however be
employed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Ernest Leslie Ransome in the Great Seal Patent Office 1
on the 2nd February 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ERNEST
LESLIE RANSONE, of Ipswich, in the County of Suffolk, send greeting.
WHEREAS Пer most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Third day of August, in the year of our Lord One 1
thousand eight hundred and sixty-five, in the twenty-ninth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Ernest Leslie Ransome, Her special licence that I, tho said Ernest
Leslie Ransome, my executors, administrators, and assigns, or such others
as I, the said Ernest Leslie Ransome, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make, use, excrcise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an In-
vention for "IMPROVEMENTS IN PAINTS OR PREPARATIONS FOR COATING SURFACES,"
upon the condition (amongst others) that I, the said Ernest Leslie Ransome,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the samo
I was to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that I, the said Ernest Leslie Ransome, do hereby
declare the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:-
This Invention has for its object improveme its in paints or compositions

page_text: for coating surfaces. For this purpose I mix with a soluble silicate a pig-
ment, such as carbonate of lead, oxide of zinc, carbonate or sulphate of
baryta, or a pigment-like substance, such as ground glass or stone; and I
combine with the said mixture a material which decomposes gradually the
soluble silicate, and causes it to deposit an insoluble silicate I prefer to
employ lime water as the cheapest and most effectual re-agent for the purpose.
Aluminate of soda, alum, and other substances may however be employed.
The following composition I have found very useful-
for coating surfaces. For this purpose I mix with a soluble silicate a pig-
ment, such as carbonate of lead, oxide of zinc, carbonate or sulphate of
baryta, or a pigment-like substance, such as ground glass or stone; and I
combine with the said mixture a material which decomposes gradually the
soluble silicate, and causes it to deposit an insoluble silicate
I prefer to
employ lime water as the cheapest and most effectual re-agent for the purpose.
Aluminate of soda, alum, and other substances may however be employed.
The following composition I have found very useful —
Or I use-
One gallon of silicate of soda of sp. gr. 1.450.
60 lbs. of chalk, ground fine.
2 gallons of lime water
One gallon of silicate of soda of sp. gr 1450
40 lbs. of ground Bath stone.
20 lbs. of ground chalk
1 lb. of carbonate of lead.
2 gallons of lime water.
The materials should be ground in any suitable mill in the same way as
ordinary paint is mixed, and the mixture is reduced with water to a paint-
like consistency or somewhat thinner; it should be used within an hour or
two of the time of mixing, otherwise it will set.
From the examples above given it is evident that a great variety of similar
paints may be prepared by varying the nature of the pigment and of the
solution employed for decomposing the silicate of soda.
It is however essential in paints manufactured according to my Invention
that they should consist of a pigment or pigment-like substance mixed with
silicate of soda and lime water, or other material, which will decompose the
silicate of soda with the formation of an insoluble silicate.
Compositions of this nature are especially applicable for coating buck,
stucco, and simular surfaces, but they may also advantageously be applied to
surfaces of wood.
In witness whereof, I, the said Ernest Leslie Ransome, have here-
unto set my hand and seal, this First day of February, in the year
of our Lord One thousand eight hundied and sixty-six.
T DANSOME
E. L. RANSOME. (2.)