A SUBSTITUTE FOR RED LEAD EITHER AS A CEMENT FOR JOINTS OR A COATING FOR PRESERVING METALS
Year: 1858

page_text: LETTERS PATENT to George Davies, of No. 1, Serle Street, Lincoln's Inn,
in the County of Middlesex, and No. 28, St. Enoch Square, in the City
of Glasgow, Civil Engineer and Patent Agent, for the Invention, of "A
SUBSTITUTE FOR RED LEAD EITHER AS A CEMENT FOR JOINTS OR A COATING FOR
PRESERVING METALS."-A communication from Messrs. Bouchard and
Clavel, of Paris, Bankers.
Sealed the 9th August 1858, and dated the 6th March 1858.
PROVISIONAL SPECIFICATION left by the said George Davies, at the
Office of the Commissioners of Patents, with his Petition, on the 6th
March 1858.
I, GEORGE DAVIES, of No. 1, Serle Street, Lincoln's Inn, in the County of
Middlesex, and No. 28, St. Enoch Square, in the City of Glasgow, Civil
Engineer and Patent Agent, do hereby declare the nature of the said Invention
for "A SUBSTITUTE FOR RED LEAD, EITHER AS A CEMENT FOR JOINTS OR A COATING
FOR PRESERVING METALS," (a communication from Messrs. Bouchard and Clavel,
of Paris, Bankers,) to be as follows:-
This Invention is based on the discovery and application of a certain earth
or. ochre to which the name of "Burgundy red " has been given. This red
ochre is very rich in silica and alumina, and is found on the estate of La
Gruerie, in the Commune of Fontenouille, Canton of Charney, Department of
Yonne, France; but as it is probable that ochre of the same or very similar
quality may be found in other parts, the Inventors wish to reserve to them-
selves the application of such earths or ochres in general to the preparation of
the substitute for red lead.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Davies in the Great Seal Patent Office on the
6th September 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
DAVIES, of No. 1, Serle Street, Lincoln's Inn, in the County of Middlesex,
and No. 28, St. Enoch Square, in the City of Glasgow, Civil Engineer and
Patent Agent, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of March, in the year of our Lord One
thousand eight hundred and fifty-eight, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said George Davies, Her special licence, that I, the said George

page_text: Davies, my executors, administrators, and assigns, or such others as I, the
said George Davies, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after 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 SUB-
STITUTE FOR RED LEAD, EITHER AS A CEMENT FOR JOINTS OR A COATING FOR
PRESERVING METALS," being a communication from Messrs. Bouchard and Clavel,
of Paris, Bankers, upon the condition (amongst others) that I, the said George
Davies, 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 George Davies do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and.by the following
statement in writing, that is to say:
This Invention is based on the discovery and application of a certain earth
or ochre to which the name of "Burgundy red" has been given. This red
ochre is very rich in silica and alumina, and is found on the estate of La
Gruerie, in the Commune of Fontenouille, Canton of Charny, Department
of Yonne, France; but as it is probable that ochre of the same or very
similar quality may be found in other parts, the Inventors wish to reserve to
themselves the applicatinn of such earths or ochres in general to the pre-
paration of the substitute for red lead.
The composition of this ochre (Burgundy red) is as follows:-

page_text: grease or oil, lime, and with fragments of unburnt earthenware, Roman
cement, or chalk in about the following proportions:-
Parts.
advantageously as a coating for preserving metal to prevent oxydation, by
simply diluting it with volatile oil.
A portion of the ochre may be replaced by clay, if clay can be found of a
suitable quality, that is to say, of a chemical composition allowing the pre-
servation in the final mixture of about the proportions above named.
Mastic thus prepared possesses a great advantage over red lead on account
of its economy; not only is it much inferior in price, but also one pound of
this cement is equal in. volume to four pounds of red lead.
It is to be understood that although the above proportions of the various
ingredients are those which have been found to yield the most beneficial
results, yet the Inventors do not wish to confine themselves to those precise.
proportions; but what they wish to claim as their Invention is,
Firstly, the application or use of Burgundy red or other analogous earth for.
the preparation of a mastic as a substitute for red lead.
Secondly, the general composition of the mastic, as above mentioned,
without being confined to the precise proportions given.
And, thirdly, the application of Burgundy red or other analogous earth as a
coating for preserving metal from oxydation.
In witness whereof, I, the said George Davies, have hereunto set my
hand and seal, this Sixth day of September, in the year of our Lord
One thousand eight hundred and fifty-eight.
GEORGE DAY
DAVID.
(L.)