A New or Improved Combination of Substances for the Manufacture of Varnish, Paint, Enamel, and other similar Articles.
Year: 1887

page_text: Date of Application, 13th Oct., 1887
Complete Specification Left, 13th July, 1888
Complete Specification Accepted, 17th Aug., 1888
A New or Improved Combination of Substances for the Manufacture
of Varnish, Paint, Enamel, and other similar Articles.
I ALFRED GEORGE WASS of 136 Lower Park Road Peckham in the county of
Surrey Engineer do hereby declare the nature of this invention to be as follows:-
In the refining of mineral oils a product commonly known as acid tar is evolved
and in the distillation of mineral oils and in the manufacture of gas therefrom a
product commonly known as tarry residue is evolved which products have hitherto
been usually considered waste substances. Now the object of this my invention is the
utilization of these waste products in combination with other substances in and for the
manufacture of varnish paint enamel and other similar articles.
I take the acid tar or the tarry residue so evolved and in any suitable vessel
preferably open I subject the same to the required heat for some purposes adding
thereto a due proportion of rosin. In some cases and when evolved from some oils
even the acid tar has not sufficient acid for my purposes and the tarry residue almost
invariably is in the same condition and in these cases I add thereto a proper proportion
of suitable acid preferably sulphuric or nitric acid. I then thin down the acid tar or
the tarry residue so treated with turpentine or benzoline or other suitable solvents
until the compound has attained the desired liquid or semiliquid state when it
can be allowed to cool down and is ready for use as a varnish or paint or enamel or
otherwise.
To give this compound the requisite body for stoving and other similar purposes I
can add thereto either during the time it is subjected to the heat or afterwards a
suitable proportion of white lead or other proper carbonates or oxides or sulphides.
This compound so made is black and if other colors are required the proper
pigment or other substance can be mixed therewith.
L 191L 1 of October 1887

page_text: NOW OF improved Combination of substances for the manufacture
of Varnish, Paint, Enamel, and other similar Articles.
I ALFRED GEORGE WASS of 136 Lower Park Road Peckham in the county of
Surrey Engineer do hereby declaro 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 :-
In the refining of mineral oils a product commonly known as acid tar is evolved and
in the distillation of mineral oils and in the manufacture of gas therefrom a product
commonly known as tarry residue is evolved which products have hitherto been
usually considered waste substances.
Now the object of this my invention is the utilization of these waste products in
combination with other substances in and for the manufacture of varnish paint enamel
and other similar articles.
To carry out this object and to perform this my invention I take the acid tar or the
tarry residue so evolved as aforesaid in any convenient quantity and in any suitable
vessel or apparatus preferably open I subject the same to such heat as is sufficient to
liquefy the whole mass and I maintain this heat for such a period of time as that when
it has been allowed to cool down after this treatment the acid tar or the tarry residue
shall be crisp or brittle or friable. This aforesaid period of time will vary in accordance
with the particular mineral oil from which the acid tar or the tarry residue has been
evolved as also with the process by which the same has been so evolved as also
with the condition in which the same is after such evolution. For example when
acid tar evolved from petroleum is being treated I maintain the same at or about
the boiling point for two hours or thereabouts with excellent results. I would however
mention that too much heat or more boiling than is absolutely necessary will do
little or no harm while if there is on the other hand a deficiency thereof or too
little heat or not enough boiling to render the acid tar or the tarry residue properly
crisp or brittle or friable as is desired the operation can easily be repeated until the
necessary condition has been attained. When the resultant varnish paint enamel or
other article is to be applied to a wooden or other vegetable surface or thing I pre-
ferably add to this boiling mass a proper proportion of rosin say ten per centum or
thereabouts. The acid tar or the tarry residue so treated as aforesaid is then dissolved
in turpentine in such proportions as to produce a thick pasty mass. In some cases
and when evolved from some oils even the acid tar has not or does not contain sufficient
acid to allow or cause the same to be so dissolved in the turpentine as is aforesaid
and the tarry residue almost invariably is in the same condition and whenever such is
the case I add such a quantity of a suitable acid preferably sulphuric or nitric acid as
will suffice so to allow or cause the same to be duly dissolved in the turpentine as
is desired. The acid tar or the tarry residue so treated as hereinbefore described
is then thinned down by adding thereto and thoroughly mixing therewith benzoline or

page_text: naphtha or any other of the usual and known solvents of mineral pitch until the
whole compound has attained the desired liquid or semiliquid condition and when it
has been allowed to cool down this compound is ready for use as a varnish or paint or
enamel or otherwise.
To give this compound the requisite body for stoving and other similar purposes I
can add thereto at any time either while hot or afterwards a suitable proportion of
white lead or other proper carbonates or oxides or sulphides.
This compound so made as herein before described is black and if other colors are
required the proper and desirable pigment or other substance can be mixed therewith
to produce the required color.
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 :-
The combination of substances for the manufacture of varnish paint enamel and
other similar articles substantially as and in the manner hereinbefore described and
Bet forth.