IMPROVEMENTS IN THE PURIFICATION OF GAB
Year: 1874

page_text: LETTERS PATENT to the Reverend Granville Hamilton Forbes, of
Broughton Rectory, in the County of Northampton, Clerk in Holy
Orders, for the Invention of "IMPROVEMENTS IN THE PURIFICATION OF
GAB."
Scaled the 10th March 1874, and dated the 17th January 1874.
PROVISIONAL SPECIFICATION left by the said Granville Hamilton
Forbes at the Office of the Commissioners of Patents, with his
Petition, on the 17th January 1874.
I, the Reverend GRANVILLE HAMILTON FORBES, of Broughton
Rectory, in the County of Northampton, Clerk in Holy Orders, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
THE PURIFICATION OF GAS," to be as follows:
-
This Invention relates to a new method of utilizing the compound or
compounds for the manufacture of which Letters Patent Nos. 1816,
1832, and 3783, A.D. 1873, were granted to me.

page_text: My former Inventions related to a compound or compounds of the
foul lime of gas works or of soap and chemical works, and tar or pitch or
similar bituminous substance, and in some cases of chalk or limestone
also, for the purpose of manufacturing cements, plaster, and artificial
stone capable also of being used for an artificial fuel.
According to my present Invention I use the said compound or com-
pounds for fuel or for the manufacture of a material suitable for use in
purifying gas. I burn the compound and afterwards use the residue
with or without quicklime for purifying gas, instead of or in addition to
the lime ordinarily used for that purpose.
Sometimes instead of the compounds above referred to I use foul lime
or a mixture of foul lime and chalk. I burn this and make use of the
material derived from the combustion of it for purifying the gas with or
without the addition of quicklime.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Granville Hamilton Forbes in the Great Seal
Patent Office on the 16th July 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, the
Reverend GRANVILLE HAMILTON FORBES, of Broughton Rectory, in the
County of Northampton, Clerk in Holy Orders, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of January, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Granville Hamilton Forbes,
Her special licence, that I, the said Granville Hamilton Forbes, my
executors, administrators, and assigns, or such others as I, the said
Granville Hamilton Forbes, 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

page_text: Having thus described the nature of my Invention and the manner of
performing the same, I would have it understood that I claim,-
The improvements in the purification of gas, substantially as described.
In witness whereof, I, the said Granville Hamilton Forbes, have
hereunto set my hand and seal, this Fifteenth day of July, in
the year of our Lord One thousand eight hundred and seventy-
four.
Witness,
HENRY SHAW,
Schoolmaster,
Broughton,
GRANVILLE H. FORBES. (L.S.)
Northamptonshire.