IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED IN GINNING COTTON
Year: 1873

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields
in the County of Middlesex, Gentleman, for the Invention of
"IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED IN GINNING
COTTON."-A communication from abroad by George Purvis, of the
City of Bombay.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, on
the 27th February 1873.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County,
of Middlesex, Gentleman, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED
IN GINNING COTTON," a communication to me from abroad by George
Purvis, of the City of Bombay, to be as follows:-
This Invention relates to a peculiar beater for cotton gins, and consists
of what the Inventor calls a "superficial cylindrical beater, which
is composed of an arrangement of two or more washers or discs fixed on
a spindle with pieces or strips of plates attached to them. These plates

page_text: are bent so as to form the part of a circle or segment. They are also
slotted in parallelograms, or diagonally, or right and left diagonally or
triangularly, and may also be slotted rectangularly. The plates are
fitted or fixed on the above-mentioned washers or discs with their slots
or openings running right and left, and are placed at a convenient 5
distance apart in different rows and in a straight or direct line, thus
forming the shape of a superficial cylinder. The said slotted plates are
about 40 inches long and will in some cases be made longer or shorter
in order to facilitate the manufacturing and usage of the same.
The above-named spindle is made of a square body, and is round at 1
both ends so as to attach pullies or drums to drive it with.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Henry Johnson in the Great Seal Patent
Office on the 21st August 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN 1
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of February, in the year of
our Lord One thousand cight hundred and seventy-three, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Henry Johnson, Her special licenso
that I, the said John Henry Johnson, my executors, administrators,
and assigns, or such others as I, the said John Henry Johnson,
my executors, administrators, or assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during tho
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 TO BE EMPLOYED IN GINNING COTTON," a communi- ;
cation to mo from abroad by George Purvis, of the City of Bombay,
upon the condition (amongst others) that I, the said John Henry
Johnson, my executors or administrators, by an instrument in writing
under my hand and scal, should particularly describe and ascertain

page_text: "
the nature or the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Scal
Patent Office within six calendar months next and immediately after the
dato of the said Letters Patent.
NOW KNOW YE, that I, the said John Henry Johnson, 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, reference being had to the accompanying
Drawings and to the letters and figures marked thereon, that is to
Bay:-
The said Invention relates to a peculiar beater for cotton gins, and
consists of what the Inventor calls a "superficial cylindrical beater,"
which is composed of an arrangement of two or more washers or 'discs
fixed on a spindle with picces or strips of plates attached to them.
These plates are bent so as to form the part of a circle or segment.
They are also slotted in parallelograms, or diagonally, or right and left
diagonally, or triangularly, and may also be slotted rectangularly. The
plates are fitted or fixed on the above-mentioned washers or discs with
their slots or openings running right and left, and are placed at a
convenient distance apart in different rows and in a straight or direct
line, thus forming the shape of a superficial cylinder. The said slotted
plates are about forty inches long and will in some cases bo mado longer
or shorter in order to facilitate the manufacturing and usage of the
same.
The above-named spindle is made of a square body, and is round at
both ends so as to attach pullics or drums to drive it with. All theso
parts can and will be made of wrought iron, cast iron, or any other
cheap metal suitable for the purposo.
Figuro 1 of the Drawings annexed represents a sido clevation of a
portion of my superficial cylindrical beater; Figure 2 is a cross section
of the same; and Figures 3 and 4 are details showing modified.forms of
plates detached.
a, a, are the discs; b, the spindle; c, c, tho bent or curved pieces or
strips of plates attached thereto at intervals round the discs; d, d, aro
the openings out in the said plates; e is one of the rounded ends of the
spindle for the reception of a driving pulley.

page_text: •
Having now described and particularly ascertained the nature of the
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider
to be novel and original and therefore claim as the Invention secured
to me by the herein-before in part recited Letters Patent is, the peculiar
construction of superficial cylindrical beater for cotton gins, as hercin-
before described and illustrated by the Drawings.
In witness whereof, I, the said John Henry Johnson, have to this
my Specification set my hand and scal, this Eighteenth day of
August, One thousand eight hundred and seventy-threo.