IMPROVEMENTS IN THE MANUFACTURE OF BITUMINOUS ASPHALTIC PAVING OR COVERING FOR ROADS AND OTHER WAYS, AND IN THE MEANS OF STRENGTHENING THE SURFACES OF THE SAME TO FACILITATE TRAFFIC THEREON."
Year: 1871

page_text: LETTERS PATENT to Joseph Rogers, of St. John Street Road, and
Gustave de Meirelles Soares, of York Buildings, Adelphi, both in
the County of Middlesex, for the Invention of "IMPROVEMENTS IN
THE MANUFACTURE OF BITUMINOUS ASPHALTIC PAVING OR COVERING FOR ROADS
AND OTHER WAYS, AND IN THE MEANS OF STRENGTHENING THE SURFACES OF
THE SAME TO FACILITATE TRAFFIC THEREON."
"
PROVISIONAL SPECIFICATION left by the said Joseph Rogers and
Gustave de Meirelles Soares at the Office of the Commissioners of
Patents, with their Petition, on the 30th September 1871.
We, JOSEPH ROGERS, of St. John Street Road, and GUSTAVE DE
MEIRELLES SOARES, of York Buildings, Adelphi, both in the County of
Middlesex, do hereby declare the nature of the said Invention for
" IMPROVEMENTS IN THE MANUFACTURE OF BITUMINOUS ASPHALTIC PAVING OR

page_text: COVERING FOR ROADS AND OTHER WAYS, AND IN THE MEANS OF STRENGTHENING THE
SURFACES OF THE SAME TO FACILITATE TRAFFIC THEREON," to be as follows:-
This Invention relates to certain improvements in the manufacture of
a hydrocarbon asphaltic compound suitable for covering roads, carriage
ways, or footways, whereby a durable surface will be produced capable
of affording a good foothold for horses, and impervious to atmospheric
influences.
We propose in order to make the compound to first heat in a suitable
boiler or receptacle the oils known commercially as blue or green oils,
which are obtained from the preparation and manufacture of paraffine or
tar oils derived from either vegetable or mineral tar, or from other sub-
stances possessing the same properties. We then add to the oils caustic
lime, finely pulverized and well incorporated together, previous to the
addition of pitch.
When the above materials are well mixed together, we add sawdust
and gritt highly desiccated, or slag refuse of iron works, or both com-
bined, and thoroughly commingle the whole by means of agitators or
stirrers; and when the materials are thoroughly mixed we cause the
same to be poured into moulds to form slabs or blocks for further use, or
we lay compound in a liquid or heated state directly on the road or way
to be covered.
But in either case, assuming that the blocks or slabs are melted in a
cauldron on or near the roadway, we propose to spread or sift over the
surface waste iron borings, filings, or chippings, or the waste from
engineers' factories or furnaces; then by suitable pressure the metallic
substances become embedded in the surface of the compound, and tend
to solidify the same and to afford a good foothold for horses.
The admixture of sawdust (which should be desiccated) will serve to
bind the compound, and to render it more durable.
The proportions which we have found to answer are as follows :-
Either of the above oils, 50 parts; caustic lime, 20 parts; pitch,
200 parts; sawdust, 30 parts; iron slag or gritt (or combination of
both), 700 parts.
.
The pitch may be the refuse from the gas works, and from which the
spirit has been distilled and extracted.

page_text: These materials are to be boiled, agitated, poured out, and spread.
But the iron slag will be found preferable to gritt, or they may be used
in combination.
According to these proportions, the weight of the covering or paving
would be about 200 pounds per square yard of 2 inches in thickness.
Any of the foreign rock or natural asphaltes may be mixed and used
in combination with the foregoing materials.
The compound manufactured according to this Invention may be
applied to any road or way with or without the ordinary concrete
foundation.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Rogers and Gustave de Meirelles Soares
in the Great Seal Patent Office on the 30th March 1872.
I
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOSEPH
ROGERS, of St. John Street Road, and GUSTAVE DE MEIRELLES SOARES,
of York Buildings, Adelphi, both in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of September, in the
year of our Lord One thousand eight hundred and seventy-one, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Joseph Rogers and Gustave de Meirelles
Soares, Her special licence that we, the said Joseph Rogers and Gustave
de Meirelles Soares, our executors, administrators, and assigns, or such
others as we, the said Joseph Rogers and Gustave de Meirelles Soares,
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 "IMPROVEMENTS IN
THE MANUFACTURE OF BITUMINOUS ASPHALTIC PAVING OR COVERING FOR ROADS AND
OTHER WAYS, AND IN THE MEANS OF STRENGTHENING THE SURFACES OF THE SAME TO
FACILITATE TRAFFIC THEREON," upon the condition (amongst others) that
we, the said Joseph Rogers and Gustave de Meirelles Soares, our

page_text: 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 thei
date of the said Letters Patent.
NOW KNOW YE, that we, the said Joseph Rogers and Gustave de
Meirelles Soares, 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 :—―
Our Invention relates to certain improvements in the manufacture of
a hydrocarbon asphaltic compound suitable for covering roads, carriage
ways, or footways, whereby a durable surface will be produced capable
of affording a good foothold for horses, and yet being impervious to
atmospheric influences.
In order to make this compound we subject to heat in a suitable
boiler or receptacle the oils known (commercially) as blue or green oils,
which are obtained from the preparation and manufacture of paraffine or
tar oils derived from either vegetable or mineral tar, or from other
substances possessing the same properties. We then add to the oils
caustic lime, finely pulverized and well incorporated together, previous
to the addition of pitch.
When the above materials are well mixed together, we add sawdust,
chalk, and gritt highly desiccated, or slag refuse of iron works, or a
combination thereof, and thoroughly commingle the whole by means of
agitators or stirrers; and when the materials are thoroughly mixed, we
cause the same to be poured into moulds to form slabs or blocks for
further use, or we may lay the compound in a liquid or heated state
directly on the road or way to be covered.
But in either case, assuming that the blocks or slabs are melted in a
cauldron on or near the roadway, we spread or sift over the surface
waste iron borings, filings, or chippings, or the waste from engineers'
factories or furnaces, which I prefer to be in a heated state; then by
suitable pressure the metallic substances become embedded in the surface
of the compound, and tend to solidify the same and to afford a good
foothold for horses.

page_text: application thereto of waste iron borings, filings, or chippings, or waste
from engineers' factories or furnaces, and by subsequent pressure, all
substantially as and for the purposes herein specified.
In witness whereof, we, the said Joseph Rogers and Gustave de
Meirelles Soares, have hereunto set our hands and seals, this 5
Twenty-first day of March, in the year of our Lord One thousand
eight hundred and seventy-two.
Witness,
ALEX. PRINCE,
Office for Patents,
4, Trafalgar Square,
Charing Cross.
JOSEPH ROGERS. (L.B.)
G. DE M. SOARES. (L.S.)