Improvements in or relating to Colour-washes.
Year: 1892

page_text: Date of Application, 24th May, 1892
Complete Specification Left, 23rd Mar., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Colour-washes.
I, WILLIAM HENRY BODIN, of The Acme Sanitary Engineering Works,
Wednesbury, Staffordshire, Consulting Sanitary Specialist, do hereby declare the
nature of this invention to be as follows:-
This invention consists in the hereindescribed improvements in or relating to
colour washes for coating walls, ceilings, paper hangings and other surfaces so as to
enable the colour washed wall ceiling or other surface to be washable with water
without removing or damaging the colour.
Several attempts have been made to make a washable distemper in bulk form,
that is to say, the washable distemper has been made up with the whole of the
material and in the specific colours and tints to be used. The particular object of
this invention is to make a handy vehicle (either in liquid or gelatine form or in a
powder) which the workman may incorporate with his ordinary colour-wash and
when applied to a wall ceiling or other surface properly prepared with size and alum
or size soap and alum or other mordant in the manner well known to practical
painters and decorators will render the colour-wash washable as stated above.
According to this invention I use in the vehicle any ingredient or ingredients
which when the vehicle and colour-wash have been mixed together and applied
to the prepared wall or other surface will at once attack the alum or other
particular mordant used on the wall or other surface and cause a precipitation to
take place which forms a compound insoluble in water and which when well dry
may be washed without removing or injuring the colour.
Several different ingredients may be used in the vehicle to be mixed with the
colour wash for the purpose stated above. I will enumerate a few of the mixtures
of ingredients which may be so used when the wall has been prepared or mordanted
with alum as alum is the best known and most conveniently used by the trade for
papered walls.
That is to say. The vehicle may consist of:-
1. Silicate of soda or silicate of potash which has to be added to ordinary colour
wash in the proportion of say 1 in 20 or until found sufficiently fast.
2. A preparation of sugar of lead, common washing soda (or caustic soda or póṭash)
and alum the proportions of which may be varied. I have found the following to
be the most suitable viz.: to 1 gallon of size when melted add 14 lbs. of alum and
about 12oz. of soda and then add about 14 lbs. of ground sugar of lead which has
previously been boiled in water. When caustic soda or potash is used only one
half the alum is required or the vehicle will do without any alum.
3. A mixture of phosphate of zinc, phosphate of soda and sulphate of iron in
about equal parts.
4. Caustic soda, potash, and sal-ammoniac, equal parts or varied.
5. Ammonia, sugar of lead and alum.
6. Resin and caustic soda or with an addition of a little alum.
7. Borate of manganese, sugar of lead and alum.
8. Borate of manganese and silicate of soda or potash.
9. Di-oxide of manganese and silicate of soda.
To any of the above mixtures a little size or glue may be mixed or this may be
dispensed with if there is sufficient size already in the colour wash. The vehicle
and colour wash may be used without preparing the wall or ceiling with alum
(although preparing the wall or ceiling with alum is preferred) and any of the other
ingredients mentioned may be first used on the wall or ceiling and the alum
afterwards in the colour wash or any of the above or similar ingredients may be

page_text: used or interchanged or anything that will combine and form an insoluble
compound.
Or I may use a vehicle that will readily mix with water colour and will not need
a mordant such as the following
I boil linseed oil, or preferably varnish, with sufficient silicate of soda or any
soda ley or soap to make it saponify to which size or glue may or may not be added
and used as a vehicle for mixing with the colour-wash, or,
Glue or size may be mixed with acetic acid and bichromate of potash, or,
Glue, acetic acid and soda.
Dated this 23rd day of Mov 1809
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Colour-washes.
I, WILLIAM HENRY BODIN, of The Acme Sanitary Engineering Works,
Wednesbury, Staffordshire, Consulting Sanitary Specialist, 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 consists in the hereindescribed improvements in or relating to
colour washes for coating walls, ceilings, paper hangings and other surfaces so as
to enable the colour washed wall ceiling or other surface to be washable with
water without removing or damaging the colour.
Several attempts have been made to make a washable distemper in bulk form,
that is to say, the washable distemper has been made up with the whole of the
material and in the specific colours and tints to be used. The particular object of
this invention is to make a handy vehicle (either in liquid or gelatine form or in a
powder) which the workman may incorporate with his ordinary colour-wash and
when applied to a wall ceiling or other surface properly prepared with size and
alum or size soap and alum or other mordant in the manner well known to practical
painters and decorators will render the colour-wash washable as stated above.
According to this invention I use in the vehicle the ingredients hereinafter
stated which when the vehicle and colour wash have been mixed together and
applied to the prepared wall or other surface will at once attack the alum or
other particular mordant used on the wall or other surface and cause a precipitation
to take place forming a compound insoluble in water and which when well dry
may be washed without removing or injuring the colour.
Several different ingredients may according to this invention be used in the
vehicle to be mixed with the colour wash for the purpose stated above. I will
enumerate the various mixtures of ingredients which I use when the wall has been
prepared or mordanted with alum as alum is the best known and most conveniently
used by the trade for preparing walls.
:
I have found the following mixture to be the most suitable for making the
vehicle viz. to 1 gallon of size when melted add 1 lbs. of alum and about 12 oz.
of common washing soda and then when these are dissolved add about 1 lbs. of
ground sugar of lead which has previously been boiled in about two ounces of
water. Or about oz. of caustic soda or caustic potash may be used with the
other ingredients instead of the common washing soda.
Or instead of the above I may make the vehicle of any of the following
ingredients mixed and dissolved in the melted size in about the proportious stated
below, that is to say, in one gallon of melted size :-
Borate of manmanace
11 น.

page_text: The quantity of the vehicle to be used in the colour-wash is the same as the
quantity of size usually employed therein that is to say the vehicle takes the
place of the size.
Instead of the vehicle being made up mixed with the size as stated above, the
size can be first mixed in the colour-wash in the usual way and anyone of the other-
said mixtures of ingredients (without the size) added afterwards in about the
same proportions relatively to the quantity of size in the colour wash as stated
above.
The said vehicle and colour wash may be used without first preparing or-
mordanting the wall or ceiling with alum, although thus preparing the wall or
ceiling is preferred; or instead of first mordanting the wall with alum and then
applying thereto the colour wash mixed with the vehicle as above described, I
may first apply to the wall any of the mixtures of ingredients above mentioned as.
being in the vehicle and then apply the alum afterwards in the colour wash.
When I make up the vehicle in powder form I grind up any of the various.
mixtures of ingredients but instead of size I use the same quantity of glue (ground
up) as there would be in the amount of size above stated.
Instead of making up the said various mixtures of ingredients for the workman
to mix in the colour wash as stated above I may make and sell any of the said
mixtures of ingredients ready mixed with colour.
It is to be understood that by the word "colour" in this Specification I include
"white" and "black."
The proportions of the various ingredients above stated are what I have found to
answer best in practice but it is to be understood that I do not limit myself to
the precise quantities given as these may be slightly varied without affecting the-
result.
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. In colour washes the use of the various mixtures of ingredients herein set.
forth for the purpose of making the colour washed surface washable.
2. The herein described improved method of making a colour washed wall or
other colour washed surface washable, consisting in first mordanting the wall or
other surface and then when dry applying colour wash containing any of the-
various mixtures of ingredients herein set forth.
3. The hereindescribed improved method of making a colour washed wall or
other colour washed surface washable consisting in first preparing the wall or
other surface with any of the various mixtures of ingredients herein set forth and

page_text: then when dry applying to the wall colour wash containing alum or other mordau
as herein set forth.
4. For use in colour washes to make them washable the manufacture and sale
of the various mixtures of ingredients herein before set forth either with or without
the size or glue.
5. For making washable colour washes the manufacture and sale of colours
mixed with the various mixtures of ingredients hereinbefore set forth either with
or without the size or glue..
Dated this 22nd day of March 1893
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.