A NOVEL BITUMINOUS COMPOSITION
Year: 1868

page_text: LETTERS PATENT to William Edward Gedge, of the Firm of John
Gedge and Son, of No. 11, Wellington Street, Strand, in the County
of Middlesex, Patent Agent, for the Invention of "A NOVEL
BITUMINOUS COMPOSITION."-A communication from abroad by Felicie
Labat and Joseph Meric, both of 37, Boulevard Bonne-Nouvelle,
Paris, France.
Sealed the 18th June 1869, and dated the 21st December 1868.
PROVISIONAL SPECIFICATION left by the said William Edward Gedge
at the Office of the Commissioners of Patents, with his Petition,
on the 21st December 1868.
I, WILLIAM EDWARD GEDGE, of the Firm of John Gedge and Son, of
No. 11, Wellington Street, Strand, in the County of Middlesex, Patent
Agent, do hereby declare the nature of the said Invention for "A NOVEL
BITUMINOUS COMPOSITION," a communication to me from abroad by Felicie

page_text: Labat and Joseph Meric, both of 37, Boulevard Bonne-Nouvelle, Paris,
France, to be as follows:-
The bitumen the subject of this Invention is composed of white
or liquid resin, otherwise galipot, of lampblack, and of sulphur and
red sand from the pit or mine combined in about the following
proportions:-
Labat and Joseph Meric, both of 37, Boulevard Bonne-Nouvelle, Paris,
France, to be as follows:-
The bitumen the subject of this Invention is composed of white
or liquid resin, otherwise galipot, of lampblack, and of sulphur and
red sand from the pit or mine combined in about the following
proportions :-
For every 100 lbs. weight of bitumen,—
Sulphur
-
37 lbs.
Galipot (or in case of necessity colophony)
Lampblack
Sand
-
25 lbs.
1
12 lbs.
1
25 lbs. 100 lbs.
For bitumen to be applied on wood the quantity of sand may be reduced
by about 5 lbs. weight, and it is preferable that the wood be rough, that
is to say, not planed.
In preparing this bitumen the sulphur must first be thoroughly melted 1
in a sheet-iron caldron or an earthenware pot, the galipot is then added,
and when this has almost entirely melted the lampblack is introduced,
and lastly the sand, and the whole is carefully mixed over a moderate
fire.
This bitumen may be used in the shape of bricks or be laid as a 2
coating upon any desired foundation. It is suitable for bottoms of
reservoirs, for pavements of streets or terraces, and other applications
too varied for enumeration.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Gedge in the Great Seal Patent
Office on the 18th June 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD GEDGE, of the Firm of John Gedge and Son, of No. 11,
Wellington Street, Strand, in the County of Middlesex, Patent Agent,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of December, in the
year of our Lord One thousand eight hundred and sixty-eight, in the

page_text: thirty-second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Edward Gedge, Her special
licence that I, the said William Edward Gedge, my executors, admini-
strators, and assigns, or such others as I, the said William Edward
Gedge, 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
"A NOVEL BITUMINOUS COMPOSITION," a communication to me from abroad by
Felicie Labat and Joseph Meric, both of 37, Boulevard Bonne-Nouvelle,
Paris, France, upon the condition (amongst others) that I, the said William
Edward Gedge, my executors or administrators, by an instrument in
writing under 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 William Edward Gedge, 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 :-
The bitumen the subject of this Invention is composed of white
or liquid resin, otherwise galipot, of lampblack, and of sulphur and
red sand from the pit or mine combined in about the following
proportions:-
For every 100 lbs. weight of bitumen,―
Sulphur
Galipot (or in case of necessity colophony)
Lampblack
Sand
37 lbs.
25 lbs.
12 lbs.
-
25 lbs. 100 lbs.
For bitumen to be applied on wood the quantity of sand may be reduced
by about 5 lbs. weight, and it is preferable that the wood be rough, that
is to say, not planed.
In preparing this bitumen the sulphur must first be thoroughly melted
in a sheet-iron caldron or an earthenware pot, the galipot is then added,
and when this has almost entirely melted the lampblack is introduced,

page_text: and, lastly, the sand, and the whole is carefully mixed over a moderate
fire.
This bitumen may be. used in the shape of bricks or be laid as a
coating upon any desired foundation. It is suitable for bottoms of
reservoirs, for pavements of streets or terraces, for roofing and other
applications too varied for enumeration.
In witness whereof, I the said William Edward Gedge, have here-
unto set my hand and seal, this Eighteenth day of June, in
the year of our Lord One thousand eight hundred and sixty-
nine.