IMPROVEMENTS IN WASHING AND SCREENING ASHES, COAL, COKE, ROLL-SCALE, SCRAP IRON, &C., AND AN APPARATUS OR MACHINERY FOR FACILITATING THE OPERATION OF WASHING AND SCREENING THE SAME."
Year: 1879

page_text: LETTERS PATENT to Andrew Brown, of Stockton on Tees, Engineer, and
Henry Bennett, of Stockton on Tees, Iron Works Manager, both in the
County of Durham, for the Invention of "IMPROVEMENTS IN WASHING AND
SCREENING ASHES, COAL, COKE, ROLL-SCALE, SCRAP IRON, &C., AND AN
APPARATUS OR MACHINERY FOR FACILITATING THE OPERATION OF WASHING
AND SCREENING THE SAME."
PROVISIONAL SPECIFICATION left by the said Andrew Brown and Henry
Bennett at the Office of the Commissioners of Patents on the 7th March
1879.
ANDREW BROWN, of Stockton on Tees, Engineer, and HENRY BENNETT, of
Stockton on Tees, Iron Works Manager, both in the County of Durham.. "IM-
PROVEMENTS IN WASHING AND SCREENING ASHES, COAL, COKE, ROLL-SCALE, SCRAP
IRON, &C., AND AN APPARATUS OR MACHINERY FOR FACILITATING THE OPERATION
OF WASHING AND SCREENING THE SAME."
Our Invention consists, firstly, of improvements in washing ashes and other
material by passing them through a revolving screen, made circular at the ends and
square in the middle, or it may be made throughout either circular or square, and
about a portion of its length in the centre; we effect the washing by having the
tube or screen of a larger diameter than the ends, this larger part projecting into
a tank of water, and in order to pass the ashes or other material through, and to
raise them out of the larger diameter up into the smaller part of the tube, and to
deliver the said ashes or other material out at the end of the screen or tube, we
purpose using a worm or screw on the last end of the tube or screen; different
sized meshes may be placed so as to separate the small from the large if required,
Lastly, what we claim as our Invention is a tube or screen varying in diameter to
enable a portion of it to revolve in the water with the ashes or other material,
the same to be carried through the tube or screen by means of a worm or screw.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Andrew Brown and Henry Bennett in the Great Seal Patent Office
on the 4th September 1879.
"IM-
ANDREW BROWN, of Stockton on Tees, Engineer, and HENRY BENNETT, of
Stockton on Tees, Iron Works Manager, both in the County of Durham.
PROVEMENTS IN WASHING AND SCREENING ASHES, COAL, COKE, ROLL-SCALE, SCRAP
IRON, &C., AND AN APPARATUS OR MACHINERY FOR FACILITATING THE OPERATION
OF WASHING AND SCREENING THE SAME.'
"
Our said Invention consists of improvements in the construction of washing and
screening apparatus, and in the washing and screening of ashes, coal, coke, roll
scale, scrap iron, and such like substances by passing the same through the said
apparatus as hereinafter described.
The washing and screening apparatus is arranged horizontally by means of
suitable bearings and friction rollers so as to be capable of revolving freely, and
the ends thereof are, by preference, constructed of a cylindrical form, the remaining
portion being square, or the whole may be of a cylindrical or other suitable section.
That portion of the apparatus in which the washing of the material is effected is
made of greater diameter than the ends, and projects into a tank or other vessel
containing water. The interior of the apparatus is provided with a worm, or screw,
or spirally arranged 'division by means of which the material under treatment is
caused to travel from one end to the other. The exit end of the apparatus has in
some cases attached thereto a tube or screen composed of meshes varying in size,
whereby the large and small particles of the material being operated upon are
separated.
"We will now proceed to refer to the accompanying Drawings, from which the
nature of our said Invention will be more clearly understood. Fig. I. is a side
elevation of an apparatus constructed in accordance with this Invention, and
Figures II. and III. are respectively a longitudinal section and end elevation of
the same.
Similar letters of reference indicate like parts in the several Figures;
A is the feeding end of the apparatus; B is the enlarged portion, and C the
delivering end; D is the water tank; E is the worm, or screw, or spirally arranged
division; F is the driving wheel or pulley, and G are rollers on which the apparatus
revolves.
The action of the apparatus is as follows:-The necessary rotary motion is
transmitted to the apparatus by any suitable means through the medium of the
driving wheel or pulley F, the material to be treated is then fed to the end A,
which is covered with wire netting, so that as it is caused to advance by the action
of the worm or spirally arranged division E, it becomes thoroughly riddled before
entering the enlarged portion B. The latter consists to a great extent of straight
lattice wire, which permits of the escape of any dirt washed from the material in
its passage through the water contained in the tank; having passed through the
portion B of the apparatus, the material is conducted by the said worm or division
into the part shown at C, where it is either delivered in mass, or the particles of
different sizes are separated from each other by means of a screen composed of
meshes of different diameters as will be well understood. The size of the netting
or wire work is varied according to the nature of the material to be operated
upon.
Having thus described and ascertained the nature of the said Invention and the
manner in which it is to be performed, we would observe in conclusion that what
we consider novel and original, and therefore claim as constituting the Invention
secured to us by the said hereinbefore in part recited Letters Patent are,-
First. The construction of revolving washing and screening machines, in which
one portion thereof is of greater diameter than the remainder, substantially as and
for the purposes hereinbefore described and set forth.

page_text: Secondly: The combination and arrangement of niechanism for washing and
screening, substantially as and for the purposes hereinbefore described and set
forth:
And, Thirdly. The improvements in the method of washing and screening ashes,
coal, coke, roll scale, scrap iron, and such like substances by submitting them to
the action of the apparatus hereinbefore described.
In witness whereof, we, the said Andrew Brown and Henry Bennett, have
hereunto set our hands and seals, this First day of September, in the year
of our Lord One thousand eight hundred and seventy nine.
ANDREW BROWN. (L.S.)
HENRY BENNETT: (L.S.)