IMPROVEMENTS IN CLAY MILLS APPLICABLE ALSO TO THE REDUCTION OF OTHER SUBSTANCES
Year: 1874

page_text: LETTERS PATENT to Edwin Cook, of Loughborough, in the County
of Leicester, Ironfounder, James Bombroffe, of the same place,
Brickmaker, and Thomas Baker, of Syston, in the said County of
Leicester, Brickmaker, for the Invention of "IMPROVEMENTS IN CLAY
MILLS APPLICABLE ALSO TO THE REDUCTION OF OTHER SUBSTANCES."
Scaled the 30th October 1874, and dated the 11th May 1874.
PROVISIONAL SPECIFICATION left by the said Edwin Cook, James
Bombroffe, and Thomas Baker at the Office of the Commissioners
of Patents, with their Petition, on the 11th May 1874.
We, EDWIN COOK, of Loughborough, in the County of Leicester, Iron-
founder, JAMES BOMBROFFE, of the same place, Brickmaker, and
THOMAS BAKER, of Syston, in the said County of Leicester, Brick-
maker, do hereby declare the nature of the said Invention for “Improve-
MENTS IN CLAY MILLS, APPLICABLE ALSO TO THE REDUCTION OF OTHER SUBSTANCES,”
to be as follows:-
-
This Invention consists in adapting to the ordinary plain or cylindrical
rollers employed in pulverizing, grinding, or reducing clay or other

page_text: substance, any suitable number of iron, steel, or other metal ribs, fixed
on the rollers so as to take a spiral, screw, or Archimedian course, and
secured at each end by metal rings, or by screws, bolts, or their equi-
valents; or the rollers and ribs may be made in one casting; and we also
employ in conjunction with or independently of the ribs a number of
steel or iron studs or spikes fixed to or cast with the rollers, and project-
ing from the outer surface thereof between the ribs, the object of such
arrangement being to more completely pulverize, grind, and reduce the
material, and thereby produce a finer clay, with the advantage of using
up waste and an economy in steam, horse, or manual power.
One or more of these rollers are employed in a mill, and although
specially applicable to pulverizing clay they may be advantageously
employed for the reduction of other substances.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edwin Cook, James Bombroffe, and Thomas Baker
in the Great Seal Patent Office on the 4th November 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, EDWIN
Cook, of Loughborough, in the County of Leicester, Ironfounder, JAMES
BOMBROFFE, of the same place, Brickmaker, and THOMAS BAKER, of
Syston, in the said County of Leicester, Brickmaker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent,, bearing date the Eleventh day of May, 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 successors,
give and grant unto us, the said Edwin Cook, James Bombroffe, and
Thomas Baker, Her special licence that we, the said Edwin Cook,
James Bombroffe, and Thomas Baker, our executors, administrators, and
assigns, or such others as we, the said Edwin Cook, James Bombroffe, and
Thomas Baker, 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 In-
vention for "IMPROVEMENTS IN CLAY MILLS, APPLICABLE ALSO TO THE REDUCTION

page_text: OF OTHER SUBSTANCES," upon the condition (amongst others) that we, the
said Edwin Cook, James Bombroffe, and Thomas Baker, our executors or
administrators, by an instrument in writing under our, 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 we, the said Edwin Cooke, James Bombroffe,
and Thomas Baker, 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:—
This Invention consists in adapting to the ordinary plain or cylindrical
rollers employed in pulverizing, grinding, or reducing clay or other
substance, any suitable number of iron, steel, or other metal ribs fixed
on the rollers so as to take a spiral or Archimedean course, and secured
at each end by metal rings, screw bolts, or their equivalents, such rings
being level with the ribs, so that the scraper usually employed cleans all
at the same time'; or the rollers and ribs may be made in one casting
and a number of steel or iron studs or spikes are employed, fixed to, or
cast with the rollers, and projecting from the outer surface thereof
between the ribs, the object of such arrangement being to more com-
pletely disaggregate, pulverize, and reduce the material, and thus
produce a fine clay, with the advantage of using up waste, and with an
economy in steam, horse, or manual power.
One or more of these rollers are employed in a mill, and although
specially applicable to pulverizing clay they may be advantageously
employed for the reduction of other substances.
Fig. 1 of the accompanying Drawings represents a roller of the
description above mentioned, and to which the spiral iron or steel ribs a
are fixed, in this case by the employment of the metal rings b. These
rings are fixed on the ends of the cylinder or roller, and the ribs being
level therewith, and between each rib a number of studs or spikes of
metal are arranged and fixed in any convenient manner to the roller, the
object of this combination of Archimedean ribs and studs being the more
effectual reduction of the clay.

page_text: Although the Drawing represents the ribs as connected by metal rings
to the roller we do not confine ourselves to this method, as has been
previously stated; the ribs may be connected to the roller by screw bolts
or other efficient means, or they may be cast in one piece with the
roller.
-Having thus described our Invention, what we claim is, the combina-
tion with the ordinary cylindrical or plain rollers of the spiral ribs a
fixed to the rollers by the rings b, or by other suitable means, and in
conjunction with the metal studs or spikes arranged between each rib.
in the manner and for the purposes substantially as herein-before
described.
In witness whereof, we, the said Edwin Cook, James Bombroffe,
and Thomas Baker, have hereunto set our hands and seals,
this Second day of November, in the year of our Lord One
thousand eight hundred and seventy-four.
EDWIN COOK.
(L.S.)