IMPROVEMENTS IN WATERPROOPING.
Year: 1872

page_text: LETTERS PATENT to Thomas James Denne and August Hentschel,
both of Phoenix Works, Cambridge Road, Mile End, Middlesex, for
the Invention of "IMPROVEMENTS IN WATERPROOPING.
"
PROVISIONAL SPECIFICATION left by the said Thomas James Denne
and August Hentschel at the Office of the Commissioners of Patents,
with their Petition, on the 10th August 1872.
We, THOMAS JAMES DENNE and AUGUST HENTSCHEL, both of
Phoenix Works, Cambridge Road, Mile End, Middlesex, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN WATER-
PROOFING," to be as follows:--
We take caseine or lactarine and dissolve it by the aid of ammonia in
water to about the consistency of treacle; to this we add varnish, or oil,
or fat, and boiled soap, and glycerine. This composition is to be mixed
well by continual stirring, and made hot. When it is partly cooled
down we add a small quantity of bichromate of potash in powder or
solution (preferably in solution), and apply this composition to the
material with a brush, or pass it through a trough filled with the com-
position, and then through rollers, or by similar known methods, and
allow it to dry. When dry it is through the action of light rendered
waterproof.

page_text: If it is required to make the material of any particular colour, the
colour can be added to the composition. If the colour requires grinding,
it is preferable to grind it in glycerine. No precise quantities of the
materials can be given as fixed, as different quantities will give the
required result. We prefer to use for this purpose, cascine made as
shown in our Patent, No. 2464, dated 13th September 1870.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas James Denne and August Hentschel in
the Great Scal Patent Office on the 10th February 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS 1
JAMES DENNE and AUGUST HENTSCHEL, both of Phoenix Works, Cam-
bridge Road, Mile End, Middlesex, send greeting.
2
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of August, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty- 1
sixth year of Her reign, did, for Herself, Her licirs and successors, give
and grant unto us, the said Thomas James Denne and August Hentschel,
Her special licence that we, the said Thomas James Denne and August
Hentschel, our executors, administrators, and assigns, or such others
as we, the said Thomas James Denne and August Hentschel, our
cxccutors, 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," upon the condition (amongst others) that we, the said
Thomas James Denne and August Hentschel, or one of us, our executors
or administrators, by an instrument in writing under our, or one of our,
or their, or one of their hands and scals, 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 immc-
diately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Thomas James Denne and August
Hentschel, do hereby declare the nature of our said Invention, and in a

page_text: 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 relates to the combination of ingredients for water-
proofing, and in which dissolved cascine and glycerine, or dissolved
lactarine and glycerine forms the base or body.
We take caseine or lactarine and dissolve it by the aid of ammonia in
water to about the consistency of treacle; to this we add varnish, or oil,
or fat, and boiled soap and glycerine. This composition is to be mixed
well by continual stirring, and made hot. When it is partly cooled down,
we add a small quantity of bichromate of potash, in powder or solution
(preferably in solution), and apply this composition to the material with
a brush, or we pass it through a trough filled with the composition, and
then through rollers, or by similar known methods, and allow it to dry.
When dry it is through the action of light rendered waterproof.
If it is required to make the material of any particular colour, the
colour can be added to the composition. If the colour requires grinding,
it is preferable to grind it in glycerine. No precise quantities of the
materials can be given as fixed, as different quantities will give the
required result.
T. J. DENNE.
(L.S.)
AUGUST HENTSCHEL. (L.S.)