Year: 1888

page_text: Date of Application, 11th Apr., 1888
Complete Specification Left, 27th Nov., 1888
Complete Specification Accepted, 31st Dec., 1888
I, ROBERT STONE, of 8 Talbot Court, in the City of London, Engineer, do hereby
declare the nature of my said invention to be as follows:-
The object of my invention is to manufacture paint in an improved manner.
In carrying out my invention, I make use of slate or slate refuse or waste slate.
In some cases I burn the slate in kilns, or otherwise; in other cases I use the same
without burning. In both cases I afterwards grind the material to a fine powder.
This powder is mixed with the usual oil, turpentine, and other suitable material to
form paint, for the usual purposes.
In some cases I also mix ground flint with the aforesaid materials, when a superior
hard surface is required.
In burning the aforesaid materials I sometimes use vitriol; paraffin, and other
liquids.
also in some cases mix tar with some of the aforesaid materials, and use the same
in order to produce a hard thick surface; laying it on in a hot or cold state.
GEO. DOWNING,
Agent for Applicant.

page_text: I ROBERT STONE of 8 Talbot Court, in the City of London, Engineer, do hereby
declare the nature of my said invention 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 my invention is to manufacture paint in such a manner and with such
materials, that its protective qualities and durability, as compared with ordinary paint
are greatly improved and increased.
"
In providing body" to the paint, I make use of slate or slate refuse, or waste
slate. I prepare this material, in some cases by burning the same in a kiln
previously to grinding; and in other cases I use the same in its natural state without
previously burning; but in both cases I grind the same to a fine powder previously
to mixing with other materials.
In some cases when a harder body is required, I add ground flint to the powdered
slate, and thoroughly mix the same, whereby I am enabled to produce a paint of
great solidity and hardness.
When burning the slate, I sometimes mix vitriol, paraffin, and other liquids with
the fuel in order to intensify the heat of the furnace.
The above mentioned materials, reduced to a fine powder, by grinding, are mixed
with oil, turpentine, white lead, dryers, and other ordinary materials, in order to
impart the necessary fluidity to the paint, so that it may be laid on with an ordinary
brush in the usual manner.
I sometimes find it advantageous to mix tar with all or some of the aforesaid
materials. Paint, so prepared," may be used in a warin state by heating the tar
separately previously to mixing, or may be mixed and laid on in a cold state.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
22
1. In the manufacture of paint the formation of "body" by means of pulverised
slate, substantially as hereinbefore described.
2. The manufacture of paint containing a mixture of pulverised slate, either in its
natural state or after burning, substantially as hereinbefore described.

page_text: 3. The manufacture of paint containing a mixture of pulverised slate and flint,
substantially as hereinbefore described.
4. The manufacture of paint containing a mixture of pulverised slate and tar, used
either in a hot or cold state, and either with or without an admixture of pulverised
flint, substantially as hereinbefore described.
5. The several combinations of materials together forming my invention of improve-
ments in the manufacture of paint substantially as hereinbefore described.