Improvements in the Production of Paint.
Year: 1896

page_text: Date of Application, 30th Jan., 1896
Complete Specification Left, 21st Oct., 1896-Accepted, 21st Nov., 1896
VISIONAL SPECIFI
TION.
Improvements in the Production of Paint.
1, CHRISTOPHER SULLIVAN, of Zoar Place, Neath, South Wales, Copperas
Refiner, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the production of paint, and is
intended to provide a means by which the waste sulphuric acid of tin works may
be utilised. A quantity of the acid is placed in a lead cistern furnished with a
steam coil. The acid is boiled by means of this pipe for about 20 hours after
which it is removed through a siphon into a cast iron or steel boiler. This boiler
is heated by a furnace and the material is boiled in it to a thick paste the fire being
then removed.
The thick portion or white copperas is removed by a shovel or other apparatus
and is left for about 2 hours to cool.
It is then broken up with a crusher or hammer into small pieces which are
placed in dishes or receptacles about 18 inches in length formed from fire clay or
other suitable material.
These dishes, carried on a cast iron stand, are placed in a furnace and left for
about 2 or 3 hours, the time varying according to the color required.
The dishes are placed in the furnace and removed by means of a carriage of any
suitable construction, the door of the furnace being level with the floor. The final
product is in the form of a powder and is ready for use when mixed with oil and
dryers, forming an oxide paint, which will not be liable to peel or blister.
This arrangement effects a great saving in expense and also prevents the waste
acid of tin works escaping.
Dated this 30th day of January 1896.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
I, CHRISTOPHER SULLIVAN of Zoar Place, Neath, South Wales, Copperas
Refiner, 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 :-
This invention relates to improvements in the production of paint, and is intended
to provide a means by which the waste sulphuric acid of tin works may be utilised.
A quantity of the acid is injected into a lead cistern furnished with a steam coil.
The acid is boiled by means of this pipe until a scale is formed on the surface of
the acid, which is then at about a strength of 60° in the hydrometer. After this
it is removed through a siphon into a cast iron or steel boiler. This boiler is
heated by a furnace and the material is boiled in it to a thick paste. A small
quantity of prussiate of potash may be mixed with the paste, giving it a deep blue
colour, or the paste may be used without any addition.

page_text: The fire is then drawn out and the paste is removed by a shovel or other
apparatus and is left for about two hours to cool. It is then broken up with a
crusher or hammer into small pieces which are placed in dishes or receptacles
about 18 inches in length formed from fire clay or other suitable material.
These dishes,. carried on a cast iron stand, are placed in a furnace and left for
about two or three hours, the time varying according to the colour required. The
dishes are placed in the furnace and removed by means of a carriage of any
suitable construction, the door of the furnace being level with the floor. The
pieces themselves may be placed in the stand and the dishes dispensed with, or
they may be thrown on the bottom of the furnace and drawn out when ready. The
longer they are left in the furnace the deeper is the colour produced. When the
colour is drawn out of the furnace it is ground in a mill preferably mixed with
water and a small quantity of fine scale of iron, or it may be ground without any
mixture. On removal from the mill it is placed in a drying oven and is then ready
for storage in casks. The final product is in the form of a powder and is ready for
use when mixed with oil and dryers forming an oxide paint which will not be liable
to peel or blister.
This arrangement effects a great saving in expenses and also prevents the waste
acid of tin works escaping.
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.-
(1.) Improvements in the production of paint consisting in the employment of
waste sulphuric acid from tin works, the acid being boiled to a thick paste in a
suitable apparatus, left to cool and hardened, and is then broken up and roasted in
a furnace being afterwards reduced to powder, substantially as described and for
the purposes specified.
(2.) Improvements in the production of paint consisting in the employment of
waste sulphuric acid from tin works boiled in a lead cistern, removed to a boiler
and heated until it takes the form of a paste, allowed to cool, and afterwards broken
into small pieces which are roasted in a furnace and then reduced to a powder,
substantially as described and for the purposes specified.
(3.) Improvements in the production of paint consisting in the employment of
waste sulphuric acid from tin works subjected to the process described in the above
.specification.
Dated this 20th day of October 1896.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.