Ix- PROVED MEANS FOR RENDERING WALLS AND OTHER EXPOSED SURFACES IMPERVIOUS TO THE ACTION OF WATER OR MOISTURE, AND TO PRESERVE THEM FROM ATMOSPHERIC AND OTHER DESTROYING INFLUENCES OR CAUSES
Year: 1869

page_text: LETTERS PATENT to Robert May Caffall and Daniel Miller, both of
Alton, in the County of Southampton, for the Invention of "Ix-
PROVED MEANS FOR RENDERING WALLS AND OTHER EXPOSED SURFACES
IMPERVIOUS TO THE ACTION OF WATER OR MOISTURE, AND TO PRESERVE THEM
FROM ATMOSPHERIC AND OTHER DESTROYING INFLUENCES OR CAUSES."
and Daniel Miller at the Office of the Commissioners of Patents,
with their Petition, on the 9th March 1869.
We, ROBERT MAY CAFFALL and DANIEL MILLER, both of Alton, in
the County of Southampton, do hereby declare the nature of the said
Invention for "IMPROVED MEANS FOR RENDERING WALLS AND OTHER EXPOSED
SURFACES IMPERVIOUS TO THE ACTION OF WATER OR MOISTURE, AND TO PRESERVE
THEM FROM ATMOSPHERIC AND OTHER DESTROYING INFLUENCES OR CAUSEF," to be
as follows:-

page_text: them from atmospheric or other destroying influences or causes by
covering the exposed surfaces with a coating of paraflin in a liquid
state.
We prefer to take paraflin in its solid state and subject it to the action
of heat by melting it in a metallic or other suitable vessel. When
thoroughly liquified we apply it by means of an ordinary brush, such
as is used by painters, to the wall or other surface desired to be protected.
Sometimes we previously warm the wall or other surface with what
is known as a "painter's stove" or "devil," and after the liquid paraffin
as above described has been applied we again use such stove or devil
to liquefy and force in any paraffin remaining visible on the exterior
of such wall or surface.
SPECIFICATION
in pursuance of the conditions of the Letters Patent,
filed by the said Robert May Caffall and Daniel Miller in the
» Great Seal Patent Office on the 9th September 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ROBERT
MAY CAFFALL and DANIEL MILLER, both of Alton, in the County of
Southampton, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of March, in the year of
our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Robert May Caffall and Daniel Miller, Her
special licence that we, the said Robert May Caffall and Daniel Miller,
our executors, administrators, and assigns, or such others as we, the
said Robert May Caffall and Daniel Miller, our executors, administrators,
and assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term therein expressed,
should and lawfully. might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVED MEANS FOR RENDERING
WALLS AND OTHER EXPOSED SURFACES IMPERVIOUS TO THE ACTION OF WATER OR
MOISTURE, AND TO PRESERVE THEM FROM ATMOSPHERIC AND OTHER DESTROYING
INFLUENCES OR CAUSES," upon the condition (amongst others) that we, the
said Robert May Caffall and Daniel Miller, or one of us, our executors or

page_text: administrators, by an instrument in writing under our, or one of our, or
their, or one of their hands and seals, 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 Robert May Caffall and Daniel
Miller, do hereby declare the nature of our 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:
The object of this Invention is to render walls and other exposed
surfaces impervious to the action of water or moisture, and to preserve
them from atmospheric and other destroying influences or causes,
by covering the exposed surfaces with a coating of paraffin in a liquid
state.
We prefer to take paraffin in its solid state and subject it to the
action of heat by melting it in a metallic or other suitable vessel.
When thoroughly liquefied we apply it by means of an ordinary brush,
such, as are used by painters, to the wall or other surface desired to
be protected. Sometimes we previously warm the wall or other surface
with what is known as a painter's stove or devil," and after the
liquid paraffin as above described has been applied we again use
such stove or devil "to liquify" and force in any paraffin remaining
visible on the exterior of such wall or surface.
"
"3
"
In order that our Invention may be more fully understood we append
the following detailed description thereof.
We take paraffin in its solid or crystallized state and subject it to the
action of heat so as to liquify and dissolve the same, using for this
purpose a vessel of cylindrical shape having a bottom of convex form,
underneath which is a second bottom with a lamp to contain spirit
or oil, which when lit suffices to heat the paraffin and entirely liquify
it. We then proceed as follows:-We heat the wall or other surface
to be waterproofed and preserved, and to effect this we prefer using
an instrument known as a "painter's stove" or devil," and which
we call a chest, made of metal, the front having iron bars thinly set
permitting heat generated therein to escape freely, the remainder of such
chest being made of stout sheet iron. The handle is made self-adjusting

page_text: so as to hang at different angles as required. Within this chest a
sufficient fire is made, using by preference charcoal for the purpose.
When sufficient heat has been generated we hold the chest in front of
the wall or other surface until such wall or surface is sufficiently hot
to absorb the liquefied paraffin, which we proceed immediately to apply
with an ordinary brush, such as is used by painters. We brush the
wall or other surface over with the liquified paraffin until the pores
of such wall or other surface will absorb no more. Should any of the
paraffin when cooled be apparent on the surface of such walls we again
apply heat by the same means as before described to liquefy and cause
the same to be absorbed.
And having now described the nature of our said Invention, and in
what manner the same is to be performed, we declare that we claim,
rendering walls and other exposed surfaces impervious to the action
of water or moisture and preserving them from atmospheric and other
destroying influences or causes, by covering the surfaces with a coating
or coatings of paraffin in a liquid state, as herein-before described.
In witness whereof, we, the said Robert May Caffall and Daniel
Miller, have hereunto set our hands and seals, this Eighth day
of September, in the year of our Lord One thousand eight hundred
and sixty-nine.
ROBERT MAY CAFFALL.
DANIEL MILLER.
(L.B.)
(L.S.)