AN IMPROVED COMPOSITION TO BE SUBSTITUTED FOR ORDINARY PAINTS
Year: 1866

page_text: LETTERS PATENT to William Hope and Henry Browning both of Drayton
Hall, West Drayton. in the County of Middlesex, for the Invention of
"AN IMPROVED COMPOSITION TO BE SUBSTITUTED FOR ORDINARY PAINTS."
Sealed the 27th March 1867, and dated the 3rd October 1866
PROVISIONAL SPECIFICATION left by the said William Hope and Henry
Browning at the Office of the Commissioners of Patents, with their
Petition, on the 3rd October 1866.
We. WILLIAM HOPE and HENRY BROWNING. both of Drayton Hall, West
Drayton, in the County of Middlesex, do hereby declare the nature of the
said Invention for "AN IMPROVED COMPOSITION TO BE SUBSTITUTED FOR ORDINARY
PAINTS," to be as follows:-
This Invention has for its object an improved composition to be substituted
for ordinary paints in all situations which are exposed to atmospheric influences,
and where light colours are not called for. It not only resists in a remarkable
degree the action of the atmosphere and of rain water. but also that of sea
water.
The composition is prepared with asphaltum (by preference that obtained
from the Trinidad Petroleum Company Limited when purified. but other
similar natural asphaltum may be employed) and drying oil, such as linseed,
hemp seed, or cotton seed, and in the proportions of 90 per cent. of the former
and 10 per cent. of the latter, though these proportions may be varied almost
indefinitely according to the degree of elasticity wished for, and the special

page_text: purpose for which the paint is required. The asphaltum is first melted
separately, and when partly cooled the oil is added after being warmed.
These two materials are then thoroughly, mixed and combined by any cheap
mechanical agency. Or the oil may be added before the asphaltum is melted,
though this is not recommended. Before being used the composition is thinned
down to any desired consistency with spirit of turpentine (or other similar
solvent may be employed). and this is most easily effected by aid of a little
heat. If desired, however, the composition may be applied when hot without
the intervention of turpentine. The colouring matter may be introduced either
as dry powder or may be previously combined with one of the materials of the
composition either by infusion. mechanical mixture, or otherwise. If the
composition is required for preserving ordinary wood or ironwork it may be
reduced to a consistency which will admit of its application by an ordinary
paint brush. If required for ships or other exposed situations a very much
greater stiffness both of composition and brush should be used.
The composition is useful for the insulation and protection of telegraphic
wires and cables, and also for preventing the galvanic action of metals. It
may also be substituted in nearly all cases for red lead, putty, and all other
kinds of stopping.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Hope and Henry Browning in the Great Seal
Patent Office on the 3rd April 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
HOPE and HENRY BROWNING, both of Drayton Hall, West Drayton, in the
County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Leiters
Patent, bearing date the Third day of October, in the year of our
Lord One thousand eight hundred and sixty-six, in the thirtieth year of
Her reign. did, for Herself. Her heirs and successors, give and grant unto
us, the said William Hope and Henry Browning, Her special licence
that we, the said William Hope and Henry Browning, our executors
administrators, and assigns, or such others as we, the said William Hope
and Henry Browning, our executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,

page_text: the Channel Islands, and Isle of Man. an Invention for "AN IMPROVED COM.
POSITION TO BE SUBSTITUTED FOR ORDINARY PAINTS," upon the condition (amongst
others) that we. the said William Hope and Henry Browning, our executors or
administrators, by an instrument in writing under our or their hands and
seals, or under the hand and seal of one of us or them. should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same 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 we, the said William Hope and Henry Browning,
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 an improved composition to be substituted
for ordinary paint in all situations which are exposed to atmospheric influences,
and where light colors are not called for. It not only resists in a remarkable
degree the action of the atmosphere and of rain water. but also that of sca
water.
The composition is prepared with asphaltum (by preference that obtained
from the Trinidad Petroleum Company Limited when purified, but other
similar natural asphaltum may be employed) and drying, oil, such as linseed,
hemp seed, or cotton seed, or it may be such oils as heavy pitch oil or petroleum
vil. The proportions may conveniently be 90 per cent. of asphaltum and
10 per cent. of the oil, though these proportions may be varied almost inde-
finitely according to the degree of elasticity wished for and the special purpose
for which the paint is required. The asphaltum is first melted separately, it
may be in an open vessel over a fire, and when partly cooled the oil is added
after being warmed; these two materials are then thoroughly mixed and com-
bined by any cheap mechanical agency, such as revolving beaters or agitators,
of the oil may be added before the asphaltum is melted. but this is not
recommended. Before being used the composition is thinned down to any
desired consistency with naptha or spirit of turpentine, or other similar solvent
may be employed, and this is most easily effected by aid of a little heat; if
desired, however, the composition may be applied when hot without the
intervention of turpentine. The coloring matter may be introduced either as
dry powder or may be previously combined with one of the materials of the
composition either by infusion, mechanical mixture, or otherwise; we prefer to
add it by grinding it with the oll or composition as is done in the case of
ordinary paint, and to mix it by means of revolving beaters, as before.

page_text: (..s.)
W. HOPE.
H. BROWNING. (L.S.)