AN IMPROVED REDUCING MACHINE FOR GRINDING AND PULVERISING METALLIC ORES AND ANY OTHER SUBSTANCES
Year: 1867

page_text: Sealed the 10th December 1867, and dated the 3rd July 1867.
PROVISIONAL SPECIFICATION left by the said Thomas Borlase at the
Office of the Commissioners of Patents, with his Petition, on the
3rd July 1867.
I, THOMAS BORLASE, of the Parish of Redruth, in the County of Cornwall,
Mine Carpenter, &c., do hereby declare the nature of the said Invention for
"AN IMPROVED REDUCING MACHINE FOR GRINDING AND PULVERISING METALLIC
ORES AND ANY OTHER SUBSTANCES":
In the first place the work enters the bell mouth of the cones with water
(the latter being conveyed to the feeder by a pipe or launder, as may be most
convenient, and the feeder supplying the water and also the mineral or other
substance used in such quantities as may be required), where it is torn up and
reduced to a proper size by ribs and groves cast in the mouth of the mill to
pass through or between the plain surfaces of the cones, which are constructed
of cast iron fitted closely together so as to bruise every grain, where it will be

page_text: kept by regulating the quantity of water that is left in with the work, and
confining the work by the adjusting ring at the outer edge of the mill, which
is perforated for the purpose, a sufficient time to be brought into a fit state to
pass over a separating machine or machines that may be required. The
regulating of the work will be by admitting water in greater or less quantities,
and by adjusting the perforated ring till the material is made very fine. It is
also capable of working China clay, for which it will be of great advantage;
also for lead mines, for making paint, and a variety of other purposes. The
Plan or Drawing hereto annexed explains fully the working of my machine.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Borlase in the Great Seal Patent Office on the 31st
December 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BORLASE, of the Parish of Redruth, in the County of Cornwall, Mine
Carpenter, &c., send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Third day of July, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirty-first year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said Thomas Borlase, Her special licence that I, the said Thomas Borlase, my
executors, administrators, and assigns, or such others as I, the said Thomas
Borlase, 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 "AN IMPROVED REDUCING
MACHINE FOR GRINDING AND PULVERISING METALLIC ORES AND ANY OTHER
SUBSTANCES," upon the condition (amongst others) that I, the said Thomas
Borlase, my executors or adminstrators, 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 Thomas Borlase, do hereby declare
the nature of my said Invention, and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the following
statement:
In the first place the work enters the bell mouth of the cones with water
(the latter being conveyed to the feeder by a pipe or launder, as may be most
convenient, and the feeder supplying the water and also the mineral or other
substance used in such quantities as may be required), where it is torn up
and reduced to a proper size by ribs and groves cast in the mouth of the mill
to pass through or between the plain surfaces of the cones, which are con-
structed of cast iron fitted closely together so as to bruise every grain, where
it will be kept by regulating the quantity of water that is left in with the
work, and confining the work by the adjusting ring at the outer edge of the
mill, which is perforated for the purpose, a sufficient time to be brought into
a fit state to pass over a separating machine or machines that may be
required. The regulating of the work will be by admitting water in greater
or less quantities, and by adjusting the perforated ring till the material is made
very fine. It is also capable of working China clay, for which it will be of
great advantage; also for lead mines, for making paint, and a variety of other
purposes. The Plan or Drawing hereto annexed explains fully the working of
my machine.
In witness whereof, I, the said Thomas Borlase, have hereunto set my
hand and seal, this Twenty-sixth day of December, in the year
of our Lord One thousand eight hundred and sixty-seven.
Sigued, sealed, and delivered by
the above-named Thomas Borlase,
in the presence of
JOHN L. PETER,
Solicitor,.
Redruth.
THOMAS BORLASE. (L.B.)