IMPROVEMENTS IN WATERPROOFING, AND IN RECOVERING PRODUCTS EMPLOYED THEREIN
Year: 1862

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street,
in the City of London, Patent Agent, for the Invention of " IMPROVEMENTS
IN WATERPROOFING, AND IN RECOVERING PRODUCTS EMPLOYED THEREIN."―A
communication from abroad by Adolph Baldamus, of Charlottenburg,
Prussia.
Sealed the 17th April 1863, and dated the 21st October 1862.
PROVISIONAL SPECIFICATION left by the said Richard Archibald
Brooman at the Office of the Commissioners of Patents, with his
Petition, on the 21st October 1862.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN WATERPROOFING, AND IN RECOVERING PRODUCTS EMPLOYED
THEREIN," (communicated to me from abroad by Adolph Baldamus, of
Charlottenburg, Prussia,) to be as follows:-
This Invention consists in rendering materials more or less waterproof, and
in recovering the volatile solvents used in the operation in manner hereafter
described.
I dissolve caoutchouc, gutta percha, resins, or metallic soaps in bisulphide
of carbon, ether, or other like volatile solvents, and add or not sulphur. By
the term metallic soap I mean that material which is obtained by combining
with metal dissolved in acid with the fatty matter of soap in solution. I place
the solution of any one or more of the substances above named in a vessel

page_text: closed air-tight or nearly so, and after immersing the materials therein I draw
them through an air-tight channel into another vessel. I shut off communi-
cation between the two vessels, and apply to the second vessel heat, which I
prefer to be that derived from hot water, steam, or hot air, to evaporate the
bisulphite of carbon or other volatile solvent used. The vapour is received
in a pipe or coil, and is condensed by any of the ordinary methods of con-
densation. The solvent is gathered in its liquid state, and may be used over
and over again.
Instead of the second vessel being heated for the purpose of distilling off
the solvent, I sometimes recover the solvent by exhausting it from the second
vessel, and then condensing it.
The density of the solution of the waterproofing agents determines the
extent or degree of waterproofing to be imparted to the materials undergoing
the operation.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent
Office on the 21st April 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, Patent
Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of October, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Richard Archibald Brooman, Her special licence that I,
the said Richard Archibald Brooman, my executors, administrators, and
assigns, or such others as I, the said Richard Archibald Brooman, my
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 "IMPROVEMENTS IN
WATERPROOFING, AND IN RECOVERING PRODUCTS EMPLOYED THEREIN," (commu-
nicated to me from abroad by Adolph Baldamus, of Charlottenburg, Prussia,)
upon the condition (amongst others) that I, the said Richard Archibald
Brooman, my executors or administrators, by an instrument in writing under

page_text: my, 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 I, the said Richard Archibald Brooman, 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 consists in rendering materials more or less waterproof, and
in recovering the volatile solvents used in the operation in manner hereafter
described.
I dissolve caoutchouc, gutta percha, resins, or metallic soaps in bisulphide
of carbon, ether, or other like volatile solvent, and add or not sulphur. By
the term metallic soap I mean that material which is obtained by combining
metal dissolved in acid with the fatty matter of soap in solution. I place the
solution of any one or more of the substances above named in a vessel closed
air-tight or nearly so, and after immersing the materials therein I drs them
through an air-tight channel into another vessel. I shut off communication
between the two vessels, and apply to the second vessel heat, which I prefer
to be that derived from hot water, steam, or hot air, to evaporate the
bisulphide of carbon or other volatile solvent used. The vapour is received
in a pipe or coil, and is condensed by any of the ordinary methods of con-
densation. The solvent is gathered in its liquid state, and may be used over
and over again.
Instead of the second vessel being heated for the purpose of distilling off
the solvent, I sometimes recover the solvent by exhausting it from the second
vessel, and then condensing it.
The density of the solution of the waterproofing agents determines the
extent or degree of waterproofing to be imparted to the materials undergoing
the operation.
In witness whereof, I, the said Richard Archibald Brooman, have
hereunto set my hand and seal, this Twenty-first day of April, One
thousand eight hundred and sixty-three.
R. A. BROOMAN.
L.S.)