Improvements in the Manufacture of Ceramic Ware and Apparatus for that Purpose.
Year: 1890

page_text: Date of Application, 19th Apr., 1890
Complete Specification Left, 19th Feb., 1891-Accepted, 21st Mar., 1891
PROVISIONAL SPECIFICATION.
•
Improvements in the Manufacture of Ceramic Ware and Apparatus
for that Purpose.
I, HOWARD MATRAVERS ASHLEY, of Ferrybridge, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to the manufacture of plates, saucers, basins and other
articles of ceramic ware, which I effect in the following manner. I force out
through a die, as in a brick or tile making machine, a sheet of the plastic material
of which the articles are to be made.
I prefer to partially dry both surfaces of this sheet by directing on it from above
and below currents. of warm dry air, and to powder the surfaces with the dry
material in a finely pulverised condition. The sheet, thus partially dried and
powdered, may be passed between rolls or over guide rollers.
Out of this sheet I cut a piece, about the size of the article, by means of a punch
cutter which has a sharp annular edge and which lifts with it the piece of the sheet
cut out by it.
pressure into
Bringing this over a suitable mould I admit air or other fluid under
the interior of the punch cutter, and I thereby force the plastic material to take the
shape of the mould and to leave the cutter.
The mould containing the moulded piece can then be inverted so as to allow the
piece to drop on to a travelling apron, and, to facilitate its relief from the mould, air
or fluid under pressure may be admitted through small perforations in the bottom
of the mould.
Dated this 19th day of April 1890
ABEL & IMRAY,
Agents for the Applicant.
Improvements in the Manufacture of Ceramic Ware and Apparatus
for that Purpose.
I, HOWARD MATRAVERS ASHLEY, of Ferrybridge, in the County of York,
Engineer, do hereby declare the nature of this invention, and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention relates to the manufacture of plates, saucers, basins and other
articles of ceramic ware, which I effect in the following manner.
I force out through
a die, as in a brick or tile making machine, a sheet of the plastic material of which
the articles are to be made.
I prefer to partially dry both surfaces of this sheet
by directing on it from above and below currents of warm dry air, and to powder
the surfaces with the dry material in a finely pulverised condition. The sheet thus
partially dried and powdered may be passed between rolls or over guide rollers.
Out of this sheet I cut a piece about the size of the article by means of a punch
cutter which has a sharp annular edge and which lifts with it the piece of the sheet
cut out by it. Bringing this over a suitable mould I admit air or other fluid under
pressure into the interior of the punch cutter, and I thereby force the plastic
material to take the shape of the mould and to leave the cutter.
The mould con-
taining the moulded piece can then be inverted so as to allow the piece to drop on
to a travelling apron, and to facilitate its relief from the mould, air or fluid under
pressure may he admitted through small perforations in the bottom of the
mould.

page_text: Fig. 1 is a longitudinal section partly in elevation and Fig. 2 is a plan of
apparatus according to my invention for manufacture of ceramic ware in the
manner above set forth. From a receptacle AI force by any of the known means
such as are adopted in brick or tile machines a sheet B of the plastic ceramic
material of thickness regulated by the gate and setting screw C. This sheet rests
at each side on 'endless travelling bands D passing round and over rollers E E' E²
of which E is driven by any suitable motor.
As the sheet B passes along from E to E¹ it is subjected to a current of
warm air with dust blown in through apertures F and directed on its under
`side. Its upper side may also be partially dried by currents of warm air.
G is an annular knife attached to a piston in a cylinder G' to which air
under pressure is admitted and from which it is discharged by the action of a
slide or other valve. Centrally under this knife is a mould H perforated with
દી number of holes and having under it a casing into which air under
pressure can be supplied by a flexible pipe h. The piston rod of the cylinder (
has fixed on it a pair of bent arms K which when the piston descends press on
springs Land thereby push down the bands D allowing the sheet of plastic material
to rest for a time on a frame M. The knife G then descends cutting from the
sheet a circular or other shaped piece, which by means of air forced in from above
is pressed down out of the knife and into the mould H. The knife G then ascends
and a further length of the sheet B is carried forward to have a piece cut out of
it in like manner. While this fresh length is travelling forward, the mould H is
drawn down and inverted and the moulded article is blown out of it on to a travelling
band or other conveyor by which it is removed to be baked.
The lowering and inverting of the mould are effected in the following manner.
N and P are cranks worked by gearing from the shaft of the roller E. The con-
necting rods from these cranks move racks N1 P¹ but only during parts of each
revolution the connections of the crank rods to the racks being by slotted holes or
their equivalents, so that though the cranks revolve continuously, the racks move
to and fro intermittently with an interval of rest between each stroke and the
return stroke.
By means of these racks which gear with pinions on a shaft R by one of which a
cam S is turned so as to lower the mould H, (the stem H of which has a roller
resting on the cam) and by the other pinion the stem H is itself turned half round
so as to present the mould II in an inverted position.
While it remains for a time in that position the moulded article is blown out
of the mould by compressed air supplied through the pipe h.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I claim :-
1. The herein described method of moulding ceramic articles by causing a sheet
of plastic ceramic material to travel under an annular knife, to have cut from it
a disc or other desired shape, which is forced by compressed air into a mould with
perforated bottom and by then lowering and inverting the mould and blowing from
it the moulded article.
2. For moulding ceramic articles in the manner above referred to, apparatus
constructed and operating substantially as described with reference to the accom-
panying drawings.
11
1
11
1001
ABEL & IMRAY,
Agents for the Applicant.

page_text: Date of Application, 19th Apr., 1890
Complete Specification Left, 19th Feb., 1891-Accepted, 21st Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Ceramic Ware and Apparatus
for that Purpose.
I, HOWARD MATRAVERS ASHLEY, of Ferrybridge, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to the manufacture of plates, saucers, basins and other
articles of ceramic ware, which I effect in the following manner.
I force out
through a die, as in a brick or tile making machine, a sheet of the plastic material
of which the articles are to be made.
I prefer to partially dry both surfaces of this sheet by directing on it from above
and below currents of warm dry air, and to powder the surfaces with the dry
material in a finely pulverised condition. The sheet, thus partially dried and
powdered, may be passed between rolls or over guide rollers.
Out of this sheet I cut a piece, about the size of the article, by means of a punch
cutter which has a sharp annular edge and which lifts with it the piece of the sheet
cut out by it.
Bringing this over a suitable mould I admit air or other fluid under pressure into
the interior of the punch cutter, and I thereby force the plastic material to take the
shape of the mould and to leave the cutter.
The mould containing the moulded piece can then be inverted so as to allow the
piece to drop on to a travelling apron, and, to facilitate its relief from the mould, air
or fluid under pressure may be admitted through small perforations in the bottom
of the mould.
Dated this 10th dow of A 1000
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Ceramic Ware and Apparatus
for that Purpose.
I, HOWARD MATRAVERS ASHLEY, of Ferrybridge, in the County of York,
Engineer, do hereby declare the nature of this invention, and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention relates to the manufacture of plates, saucers, basins and other
articles of ceramic ware, which I effect in the following manner. I force out through
a die, as in a brick or tile making machine, a sheet of the plastic material of which
the articles are to be made.
I prefer to partially dry both surfaces of this sheet
by directing on it from above and below currents of warm dry air, and to powder
the surfaces with the dry material in a finely pulverised condition. The sheet thus
partially dried and powdered may be passed between rolls or over guide rollers.
Out of this sheet I cut a piece about the size of the article by means of a punch
cutter which has a sharp annular edge and which lifts with it the piece of the sheet.
cut out by it. Bringing this over a suitable mould I admit air or other fluid under
pressure into the interior of the punch cutter, and I thereby force the plastic
material to take the shape of the mould and to leave the cutter.
The mould con-
taining the moulded piece can then be inverted so as to allow the piece to drop on
to a travelling apron, and to facilitate its relief from the mould, air or fluid under
pressure may be admitted through small perforations in the bottom of the
mould.

page_text: t
Fig. 1 is a longitudinal section partly in elevation and Fig. 2 is a plan of
apparatus according to my invention for manufacture of ceramic ware in the
manner above set forth. From a receptacle A. I force by any of the known means
such as are adopted in brick or tile machines a sheet B of the plastic ceramic
material of thickness regulated by the gate and setting screw C. This sheet rests
at each side on endless travelling bands D passing round and over rollers E E¹ E2
of which E is driven by any suitable motor.
As the sheet B passes along from E to E¹ it is subjected to a current of
warm air with dust blown in through apertures F and directed on its under
side. Its upper side may also be partially dried by currents of warm air.
G is an annular knife attached to a piston in a cylinder G' to which air
under pressure is admitted and from which it is discharged by the action of a
slide or other valve. Centrally under this knife is a mould H perforated with
a number of holes and having under it a casing into which air under
pressure can be supplied by a flexible pipe h. The piston rod of the cylinder G¹
has fixed on it a pair of bent arms K which when the piston descends press on
springs Land thereby push down the bands D allowing the sheet of plastic material
to rest for a time on a frame M. The knife G then descends cutting from the
sheet a circular or other shaped piece, which by means of air forced in from above
is pressed down out of the knife and into the mould H. The knife G then ascends
and a further length of the sheet B is carried forward to have a piece cut out of
it in like manner. While this fresh length is travelling forward, the mould H is
drawn down and inverted and the moulded article is blown out of it on to a travelling
band or other conveyor by which it is removed to be baked.
The lowering and inverting of the mould are effected in the following manner.
N and P are cranks worked by gearing from the shaft of the roller E. The con-
necting rods from these cranks move racks N¹ P' but only during parts of each
revolution the connections of the crank rods to the racks being by slotted holes or
their equivalents, so that though the cranks revolve continuously, the racks move
to and fro intermittently with an interval of rest between each stroke and the
return stroke.
By means of these racks which gear with pinions on a shaft R by one of which a
cam S is turned so as to lower the mould H, (the stem H of which has a roller
resting on the cam) and by the other pinion the stem H' is itself turned half round
so as to present the mould H in an inverted position.
While it remains for a time in that position the moulded article is blown out
of the mould by compressed air supplied through the pipe h.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I claim :-
1. The herein described method of moulding ceramic articles by causing a sheet
of plastic ceramic material to travel under an annular knife, to have cut from it
a disc or other desired shape, which is forced by compressed air into a mould with
perforated bottom and by then lowering and inverting the mould and blowing from
it the moulded article.
2. For moulding ceramic articles in the manner above referred to, apparatus
constructed and operating substantially as described with reference to the accom-
panying drawings.
1
2001
ABEL & IMRAY,
Agents for the Applicant.