IMPROVEMENTS IN APPARATUS TO BE EMPLOYED. IN THE PREPARATION OF PULVERIZED CLAY USED IN THE MANUFACTURE OF TILES, BRICKS, POTTERY, AND OTHER ARTICLES OF EARTHENWARE OR CHINA
Year: 1870

page_text: LETTERS PATENT to Arthur Maw, of the Firm of Maw and Company,
of Benthall Works, Benthall, in the County of Salop, Manufacturer,
for the Invention of $6
IMPROVEMENTS IN APPARATUS TO BE EMPLOYED. IN
THE PREPARATION OF PULVERIZED CLAY USED IN THE MANUFACTURE OF TILES,
BRICKS, POTTERY, AND OTHER ARTICLES OF EARTHENWARE OR CHINA.”
Sealed the 4th October 1870, and dated the 15th July 1870.
PROVISIONAL SPECIFICATION left by the said Arthur Maw at the
Office of the Commissioners of Patents, with his Petition, on the
15th July 1870.
I, ARTHUR MAW, of the Firm of Maw and Company, of Benthall
Works, Benthall, in the County of Salop, Manufacturer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN APPARATUS
TO BE EMPLOYED IN THE PREPARATION OF PULVERIZED CLAY USED IN THE MANU-
FACTURE OF TILES, BRICKS, POTTERY, AND OTHER ARTICLES OF EARTHENWARE OR
CHINA," to be as follows, that is to say:-
This Invention consists of apparatus specially adapted to the purpose
of damping the dust or pulverized clay from which articles of the

page_text: descriptions above named are or may be produced by the process known
as the dust or Prosser's process.
The apparatus comprises a revolving drum or barrel fixed near the
grinding mill, into one end of which barrel the clay in the form of
fine dust enters. The barrel is provided internally with longitudinal
flanges running in a more or less spiral direction according to the
position of the barrel, by the action of which, in conjunction with the
rotatory motion of the barrel, the dust is delivered from one end of the
barrel to the other. The delivery end of the barrel is in communication
with a hydraulic pump or other suitable appliance, by which a jet
of water is delivered at high pressure in the form of fine spray
the interior of the barrel during its revolution, the result being that
the spray meets the dust whilst in agitation and becomes intimately and
almost impalpably mixed with it.
into
The apparatus used to produce the spray may consist of a tube formed
into a funnel or mouth at the discharge end, the other end of the tube
being connected to the hydraulic pump. The funnel or mouth is
tapped to receive a screwed plug capable of adjustment and provided
with grooves cut upon its screwed surface, through which grooves
the water is forced from the tube in the form of fine jets or sprays.
The dust then passes through openings in the delivery end of the barrel
so arranged as to produce an equal distribution of the dust, which
passes either directly or by means of an endless web or other suitable
contrivance into the sieve chamber, and by means of mill brushes
revolving within the sieve it is reduced to the proper condition
for use.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Arthur Maw in the Great Seal Patent Office on
the 12th January 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ARTHUR 30
MAW, of the Firm of Maw and Company, of Benthall Works, Benthall,
in the County of Salop, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of July, in the year
of our Lord One thousand eight hundred and seventy, in the thirty- 3

page_text: fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Arthur Maw, Her special licence that
I, the said Arthur Maw, my executors, administrators, and assigns, or
such others as I, the said Arthur Maw, my executors, administrators,
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 "IMPROVEMENTS IN APPARATUS TO BE EMPLOYED
IN THE PREPARATION OF PULVERISED CLAY USED IN THE MANUFACTURE OF TILES,
BRICKS, POTTERY, AND OTHER ARTICLES OF EARTHENWARE OR CHINA," upon the
condition (amongst others) that I, the said Arthur Maw, 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 Letters Patent.
NOW KNOW YE, that I, the said Arthur Maw, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, that is to say :-
This Invention consists of apparatus specially adapted to the
purpose
of damping the dust or pulverized clay from which articles of the
descriptions above named are or may be produced by the process known
as the "dust or "Prosser's" process.
"
The apparatus comprises a revolving drum or barrel fixed near the
grinding mill, into into one end of which barrel the clay in the form of
fine dust, enters from a hopper connected to the grinding mill and
to the receiving end of the barrel, which is suitably shaped for such
purpose. The barrel is provided internally with longitudinal flanges
or ribs running in a parallel or a more or less spiral direction according
to the position of the barrel, by the action of which, in conjunction with
the rotary motion of the barrel, the dust is delivered from one end
of the barrel to the other in the form of a continuous cataract. The
delivery, end of the barrel or drum is closed with the exception of a
small opening, through which a fine spray of water is thrown at high
pressure from a jet in communication with a hydraulic pump or other

page_text: suitable appliance. The spray of water meets the dust whilst in agitation,
and becomes intimately and almost impalpably mixed with it.
The apparatus used to produce the spray consists by preference of
a tube formed into a funnel or mouth at the discharge end, the other
end being connected to the hydraulic pump. The funnel or mouth
is tapped to receive a screwed plug which is capable of adjustment,
and is provided with grooves cut upon its screwed surface, through
which grooves the water is forced from the tubes and is discharged from
and around the annular impinging surfaces of the screwed plug and the
tube in the form of minute spray. The dust then passes through
openings or slots formed in the delivery end of the barrel or drum so
arranged as to produce an equal distribution of the dust, which passes
either directly or by means of an endless web or other suitable con-
trivance into the seive chamber, and by the action of mill brushes
revolving within the sieve chamber it is reduced to the proper condition
for use.
Having thus described the object and nature of my said Invention,
and in what manner the same is to be carried into effect, I claim, without
limiting myself to these exact details, the improvements in apparatus
to be employed in the preparation of pulverized clay used in the manu-
facture of tiles, bricks, pottery, and other articles of earthenware or
china, or any equivalents for such improvements, whereby the clay
reduced to dust and in a state of suspension and not in contact with the
surface of any object is met by water in the form of fine spray or vapour
and become intimately mixed therewith.
In witness whereof, I, the said Arthur Maw, have hereunto set
my hand and seal, this Seventh day of January, in the year of
our Lord One thousand eight hundred and seventy-one.