AN IMPROVEMENT IN DRUMS OF ROTARY SCREENS
Year: 1875

page_text: LETTERS PATENT to Charles Cousins, of the City of Lincoln, Manager
to Penncy and Company, Limited, of the same Place, for the
Invention of "AN IMPROVEMENT IN DRUMS OF ROTARY SCREENS."
Sealed the 20th December 1875, and dated the 31st August 1875.
PROVISIONAL SPECIFICATION left by the said Charles Cousins at the
Office of the Commissioners of Patents, with his Petition, on the
31st August 1875.
I, CHARLES COUSINS, of the City of Lincoln, Manager to Penney and
5 Company, Limited, of the same Place, do hereby declare the nature of
the said Invention for "AN IMPROVEMENT IN DRUMS OF ROTARY SCREENS," to
be as follows:-
:
My Invention has for object the employment of wire of triangular or
equivalent shape, and I arrange the coils or layers thereof with the apex
or edge towards the central part of the drum.
The advantage of my Invention is, the grain is acted upon in a better
and more efficacious manner than by the employment of round sectional

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Cousins in the Great Seal Patent Office
on the 22nd February 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
COUSINS, of the City of Lincoln, Manager to Penney and Company,
Limited, of the same Place, send greeting. . .
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of August, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Charles Cousins, Her special license that
I, the said Charles Cousins, my executors, administrators, and assigns,
or such others as I, the said Charles Cousins, my executors, admini-
strators, 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 IMPROVEMENT IN DRUMS
OF ROTARY SCREENS," upon the condition (amongst others) that I, the
said Charles Cousins, 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
L'etters Patent.
NOW KNOW YE, that I, the said Charles Cousins, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the accompanying
Drawings, and to the letters and figures marked thereon, that is to say :-
My Invention has for object the employment of wire of triangular or

page_text: equivalent shape, and I arrange the coils or layers thereof with the apex
or edge towards the central part of the drum.
The advantages of my Invention is, the grain is acted upon in a better
and more efficacious manner than by the employment of round sectional
wire as heretofore used, the triangular or other equivalent shaped wire
being also kept cleaner and free from becoming clogged.
equivalent shape, and I arrange the coils or layers thereof with the apex
or edge towards the central part of the drum. '
.
The advantages of my Invention is, the grain is acted upon in a better
and more efficacious manner than by the employment of round sectional
wire as heretofore used, the triangular or other equivalent shaped wire
being also kept cleaner and free from becoming clogged.
I now proceed with reference to the accompanying Drawings to
exemplify a drum constructed according to my Invention.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a perspective view of portion of a drum of a rotary screen
constructed according to my Invention.
The triangular wire is seen in section at a, and it is arranged in coils
or layers with its apices 6 pointing towards the axis or central part of
the drum.
By the employment of wire of triangular shape the grain is acted
upon in a better and more efficacious manner, and the drum is kept
clean and free from becoming clogged, which is now common with the
round sectional wire in use.
Figure 2 is also a perspective view of portion of a drum of a rotary
screen, but in this modification I use wire of semicircular or half-round
shape, the same advantages being obtained as above mentioned in the
case of the triangular wire.
Figures 3 and 4 are detached views in sectional elevation of a portion
of a wire coil or layer showing on a larger scale the triangular and
semicircular or half-round portions thereof.
Iustead of using a brush to keep the meshes clear I prefer to use a
strip of leather, india-rubber, or other rigid material, and I mount such
material in a frame, which is placed against the drum in the same
manner as is the brush.
The coils, layers, meshes, or interstices of the drum are opened, closed,
and regulated by any ordinary means.
Having now described the nature of the said Invention, and in what
manner the same may be employed, I declare that I claim as my
improvement in drums of rotary screens, the employment of wire of

page_text: triangular or equivalent shape arranged in coils or-layers with with the
apices pointing towards the axis or centre of the drum; substantially
in the manner and for the purposes described.
In witness whereof, I, the said Charles Cousins, have hereunto
set my hand and seal, this Twenty-ninth day of January, in the 5
year of our Lord One thousand eight hundred and seventy:
six.
Witness,
ALBERT LEWIS,
33, Baggeholme Road,
Lincoln.
CHARLES COUSINS. (L.S.)