IMPROVEMENTS IN MACHINERY OR APPARATUS POR CUTTING OR GETTING COAL, STONE, AND OTHER MINERALS
Year: 1872

page_text: LETTERS PATENT to John Gillott, of Barnsley, in the County of York,
and Peter Copley, of Barnsley, in the County of York, for the
Invention of IMPROVEMENTS IN MACHINERY OR APPARATUS POR CUTTING
OR GETTING COAL, STONE, AND OTHER MINERALS."
و,
Sealed the 20th October 1872, and dated the 2nd July 1872.--
PROVISIONAL SPECIFICATION left; by the said John Gillott and Peter,
Copley at the Office of the Commissioners of Patents, with their
Petition, on the 2nd July 1872.
We, JOHN GILLOTT, of Barnsley, in the County of York, and PETER
COPLEY, of Barnsley, in the County of York, do hereby declare the
nature of our said Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS
FOR CUTTING OR GETTING COAL, STONE, AND OTHER MINERALS," to be as
follows:-
This Invention relates to certain improvements in the machinery or
apparatus for cutting coal described in the Specification of Letters
Patent granted to us, and bearing date the Twenty-fifth of August

page_text: One thousand eight hundred and sixty-eight, Number 2643, and consists
of an improved mode of mounting the cutter wheel.
In carrying out our Invention we form a bevel flange projecting
inwards on the upper side of the cutter wheel, and we attach a corre-
sponding retaining strip to the under side of the overhanging carrying &
bracket in such a manner as to allow the said internal bevel flange on
the outter wheel to revolve in the space between the said strip and the
bracket, the wheel revolving freely on its centre, and being kept to the
cut by the combined action of the said flange and strip, whilst at the
same time the driving pinion is prevented from forcing itself out of
gear with the teeth in the cutter wheel, as the periphery of the said
wheel is prevented from springing by the said strip and flange.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Gillott and Peter Copley in the Great Seal
Patent Office on the 30th December 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
GILLOTT, of Barnsley, in the County of York, and PETER COPLEY, of
Barnsley, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of July, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said John Gillott and Peter Copley, Her special
license that we, the said John Gillott and Peter Copley, our executors,
administrators, and assigns, or such others as we, the said John Gillott
and Peter Copley, our executors, administrators, or 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 MACHINERY OR APPARATUS FOR CUTTING OR GETTING COAL,
STONE, AND OTHER MINERALS," upon the condition (amongst others) that we,
the said John Gillott and Peter Copley, our executors or administrators,
by an instrument in writing under our hands and seals, should particu-

page_text: larly 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 John Gillott and Peter Copley,
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, reference being had to the accom-
panying Drawings, and to the letters and figures marked thereon, that
is to say:
"
Our said Invention relates to certain improvements in the machinery
or apparatus for cutting coal described in the Specification of Letters
Patent granted to us, and bearing date the Twenty-fifth of August
One thousand eight hundred and sixty-eight, No. 2643, and consists of
an improved mode of mounting the cutter wheel in the said apparatus.
And in order that our said Invention may be fully understood we
shall now proceed more particularly to describe the same, and for that
purpose shall refer to the several Figures on the annexed Sheet of
Drawings, the same letters of reference indicating corresponding parts
in all the Figures.
Figure 1 of the annexed Sheet of Drawings represents a full sized
vertical section detached of a portion of the bracket which carries the
cutter wheel; Figure 2 is a similar section of a portion of the cutter
wheel also detached; and Figure 3 is a plan shewing a portion of the
carrying bracket or plate with a portion of the cutter wheel fitted
therein.
A. (Figure 2) is a bevel flange which is formed so as to project inwards
from the upper surface of the cutter wheel, B and C (Figure 1) is a
corresponding bevelled retaining strip made concentric with the cutter
wheel and secured by screws or otherwise on to the under side of the
overhanging carrying bracket or plate D (Figure 1). The bevelled
flange A on the cutter wheel revolves in the space a between the
retaining strip O and the bracket D, the said wheel working freely on
its centre E (Figure 3). The cutter wheel is thus kept up to its cut
by the combined action of the said flange and strip, whilst at the same
time the driving pinion which gears into the teeth 6 of the cutter wheel

page_text: is prevented from forcing itself out of gear with the teeth since the
periphery of the said wheel is prevented from springing by the pressure
of the said strip and flange.
Having now described and particularly ascertained the nature of our
said Invention, and the manner in which the same is or may be used or
carried into effect, we would observe in conclusion that what we consider
to be novel and original and therefore claim as the Invention secured to
us by the herein-before in part recited Letters Patent is, the combi-
nation with a horizontal cutting wheel employed in the cutting or
getting of coal, stone, and other minerals of an internal flange on the
wheel itself and a corresponding strip on the carrying bracket or plate,
substantially as and for the purpose herein-before described.
In witness whereof, we, the said John Gillott and Peter Copley,
have to this our Specification set our hands and seals, the
Twenty-seventh day of December One thousand eight hundred and
seventy-two.