IMPROVEMENTS IN APPARATUS FOR THE SEPARATION OF IMPURITIES FROM CHINA CLAY, UMBER, OCHRE AND LIKE MATTERS
Year: 1883

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LETTERS PATENT to Alfred Singer Chinnock of St Austell Cornwall for an
Invention of "IMPROVEMENTS IN APPARATUS FOR THE SEPARATION OF
IMPURITIES FROM CHINA CLAY, UMBER, OCHRE AND LIKE MATTERS
"
PROVISIONAL SPECIFICATION left by the said Alfred Singer Chinnock at
the Office of the Commissioners of Patents on the 4th July 1883.
ALFRED SINGER CHINNOCK of St. Austell Cornwall
"IMPROVEMENTS IN
APPARATUS FOR THE SEPARATION OF IMPURITIES FROM CHINA CLAY, UMBER,
OCHRE AND LIKE MATTERS
"
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:
1
This invention has for its object improvements in apparatus for the separation of
impurities from china clay umber, ochre and like matters.
For this purpose I employ an endless sheet of fine wire gauze distended over
rollers. I usually employ three rollers, and the upper part of the endless sheet is.
distended horizontally between two of the rollers and the under part is deflected
downwards by the third roller. Between the upper and the under side of the
sheet a receiving trough is provided, and also a pipe supplied with water under
pressure and perforated so that water may issue from it against the gauze. The
china clay suspended in water and free from the grosser impurities, which are
casily got rid of by subsidence, is conducted on to the upper surface of the gauze
and it runs through with the water into the receiving trough whilst the impurities,
not being in so fine a state of division are left upon the gauze. As the gauzo
travels on the jets of water wash the impurities from the surface and leave it clean
to receive the stream when the gauze next comes round but instead of or in
addition to this mode of cleansing the wire cloth the lower roller inay be placed so
as to conduct the wire cloth through a running stream of clean water. By this
means I am able to separate shale weed and other impurities very completely from
china clay which on account of the low specific gravity of the shale and such other
impurities cannot be done by deposition. In order to impart slow movement to
the travelling surface of gauze I cause the stream of water carrying the material in
suspension to fall upon a small water wheel or motor so as to put the same into
movement and the axis of this wheel or notor I gear with the axis of one (or
more) of the rollers upon which the endless sheet of wire gauze is distended.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alfred Singer Chinnock in the Patent Office on the 4th January
1884.
ALFRED SINGER CHINNOCK of St Austell Cornwall "IMPROVEMENTS IN
APPARATUS FOR THE SEPARATION OF IMPURITIES FROM CHINA CLAY, UMBER,
OCHRE AND LIKE MATTERS
"
:
This Invention has for its object improvements in apparatus for the separation
of impurities from china, clay, umber, ochre and like matters.
For this purpose I employ an endless sheet of fine wire gauze distended over
rollers. I usually employ three rollers, and the upper part of the endless sheet is
distended horizontally between two of the rollers and the under part is deflected
downwards by the third roller-Between the upper and the under side of the
Sheet a receiving trough is provided and also a pipe. supplied with water under
pressure and perforated so that water may issue from it against the gauze-The
china clay suspended in water and free from the grosser impurities, which are
easily got rid of by subsidence, is conducted on to the upper surface of the gauze
and it runs through with the water into the receiving trough whilst the impurities
not being in so fine a state of division are left upon the gauze-As the gauze
travels on, the jets of water wash the impurities from the surface and leave it clean
to receive the stream when the gauze next comes round.but instead of or in
addition to this mode of cleansing the wire cloth the lower roller may be placed so
as to conduct the wire cloth through a running stream of clean water: By this
means I am able to separate shale weed and their impurities very completely from
china clay which on account of the low specific gravity of the shale and such other
impurities cannot be done by deposition. In order to impart slow movement to
the travelling surface of gauze I cause the stream of water carrying the material
in suspension to fall upon a small water wheel or, motor so as to put the same
into movement and the axis of this wheel or motor I gear with the axis of one (or
more) of the rollers upon which the endless sheet of wire gauze is distended. .
In order that my said invention may be most fully understood and readily
carried into effect, I will proceed to describe the drawings hereunto annexed. ;
Figure 1 is a plan.
DESCRIPTION OF THE DRAWINGS
one
of
Figure 2 is a longitudinal and vertical section of my improved apparatus..
A. A. is a frame which carries the axes of three rollers B. C. and D and
the axes is driven either by water power or in any other convenient manner.
E. E. is an endless sheet of wire gauze distended upon these rollers and which
travels around continuously by the motion imparted to it from the driven roller.
In practice I find it advisable to attach the edges of this sheet to pitch chains
which are carried by corresponding chain wheels mounted upon the rollers or their,
axes.
I form eyelet holes in the edges of the gauze sheet and lace it by means of these
eyes to corresponding eyes provided for the purpose upon the pitch chains.
F. is a trough which conveys the stream of water carrying the china clay to the.

page_text: to receptacles in which the clay is deposited and the water is drawn off in the
usual manner.
H is a pipe conveying water under a moderate pressure to act upon the inner
surface of the gauze Sheet E-The under side of this pipe is perforated and jets of
water issue from it against the surface of the gauze displacing the impurities which
the gauze has collected in its last passage beneath the trough F.
The roller D may be of sufficient weight to keep the endless chains and the wire
gauze distended-Its axis is capable of playing up and down in vertical slots in
the frame-If desired provision may be made for clamping the axis in position
within these slots. But little power will be required to impart to the gauze Ę the
slow motion which is necessary_This power may be obtained by causing the
stream flowing from the trough G. to act upon a small water wheel, the axis of
which is geared by bevelled pinions with the axis of either of the rollers B or C-
Or the stream of water issuing from the pipe H may be collected by a trough after
it has passed through the gauze E, and directed on to a small water wheel from
which the necessary power is derived, the axis of the wheel being geared with
either of the rollers B or C in any convenient manner.
Having thus described the nature of my said invention and the manner of
performing the same I would have it understood that I claim as my invention my
improved apparatus for the separation of impurities from china clay umber ochre
and like matters substantially as herein described
In witness whereof I the said Alfred Singer Chinnock have hereunto set my
hand and seal this third day of January in the year of our Lord One thousand
eight hundred and eighty four.
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