Improvements in Apparatus for the Manufacture of Ceramic and other Tiles.
Year: 1897

page_text: Date of Application, 26th Nov., 1897
Complete Specification Left, 26th Aug., 1898-Accepted, 29th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for the Manufacture of Ceramic
and other Tiles.
AMBROSE ROBERTS, EDWIN THOMAS BALL, WALTER HENRY BANGHAM, Engineers,
all of Wharf Street, Stoke-on-Trent, County of Stafford, do hereby declare the
nature of this invention to be as follows:-
This invention relates to apparatus for the manufacture of ceramic or other
tiles, by means of forming by an improved method, undercut recesses in the
under side of tiles.
The bottom die is made with suitable spaces or openings in which are placed
moveable slides and attachments which actuated by vertical taper wedges con-
nected to a loose plate underneath die, cause these slides to move outwards from
each other across the face of the lie, these slides are kept in position against
taper wedges by means of india rubber rings or suitable springs, when the tile
after being made is lifted out of the die box these slides close towards each other
and so release the tile.
. Sch
No 1207
AMBROSE ROBERTS.
EDWARD THOMAS BALL.
WALTER HENRY BANGHAM.
Improvements in Apparatus for the Manufacture of Ceramic
and other Tiles.
We. AMBROSE ROBERTS, of Wharf Street, Engineer, EDWIN THOMAS BALL,
of 604, Leek Road, Engineer, and WALTER HENRY BANGIAM, of 604, Leek Road,
Engineer, all in Stoke-on-Trent, in the County of Stafford, 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:-
-
This invention relates to apparatus as used for the manufacture of ceramic and
other tiles, and consists of an improved form of such apparatus by means of
which dovetailed or undercut recesses may be conveniently and quickly formed
in either of the faces of such tiles.
In order to enable this to be carried out either the bottom or the top die (pre-
ferably the former) is constructed with one or more suitable spaces or openings
in each of which two movable slides are placed, to the upper end of each of which

page_text: a plate or attachment is rigidly fixed in such manner as to move with the slides.
The plates or attachments project from the face of the die in such manner that
when the tile is being formed the plates or attachments are embedded in the
plastic substance from which the tile is to be formed.
The improvement can be applied to either the bottom or top die, the only
difference being that when applied to the latter, it is necessary to insert springs
between the loose plate and the die, and to limit the movement of these two by
stops or the like.
In the accompanying drawings our invention is illustrated as applied to the
bottom die of a press. which is the system we preferably employ. In these:-
Fig. 1 is a longitudinal vertical section of a die plate with two openings.
Fig. 2 is a transverse vertical section of same.
Fig. 3 is a plan.
Figs. 4, 5, 6, 7 and 8 are detailed views.
The die plate is indicated by the letter and the spaces or openings in the
same by the letter a these openings are tapered, the underside opening on that
nearer the loose plate being larger than that formed in the upper or working
face of the die. The openings are so shaped near the under side of the die-plate
as to form guides in which the flanges el of the slides e are free to slide against
the action of helical or other springs f. Formed integrally with or rigidly
attached to the upper ends of each of these slides is a plate or attachment which
projects above the upper or working face of the die plate a, and as before stated
is embedded in the plastic substance during manufacture.
The die-plate is attached to the bed plates of the press used by means of a
lifting rod which forms a guide for the loose plate to which are fixed wedges c
which enter the openings a between the two slides e the inclined outer faces
of each wedge engaging with a corresponding oppositely inclined face of the
slides e in such manner that when the wedges (with the loose plate b) are
moved upwards the slides e, Hanges el and attachments are forced outwards
against the action of the springs thus forming a dovetailed undercut impression
or recess in the plastic tile.
The operation is as follows:-
i
The parts being in the position shewn in Fig. 1 the die-plate a is supported by the
action of the springs f forcing the inclined surfaces of the slides e against
the wedge faces. The plastic material being now placed in position upon the
die plate, as soon as the upper die plate is forced down upon this the tile is
formed and simultaneously by the descent of the die-plate a, the wedges thrusts
the slides and attachments outwards. When the pressure is removed the die-
plate rises and the slides e and attachments slide together thus freeing these
dovetailed or inclined ends from the plastic tile, leaving an undercut recess cor-
responding to the shape of the outer euds of the attachments. The plastic tile
can then be lifted freely from the die-plate, leaving the apparatus ready for a
second operation.
We do not confine ourselves to the exact details shewn, but employ devices suit-
able to different circumstances always subject to the principle of our invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. The improved apparatus for the manufacture of ceramic and other tiles in
which slides are automatically moved in such manner that undercut recesses can
be produced in one or both sides of the tiles substantially as described and
shewn.
2. In die-plates for manufacturing ceramic and other tiles, the combination of
a die-plate having a recess or recesses controlled by springs and slides having
plates or attachments and a loose plate having wedges all constructed and operat
ing substantially as described and shewn.

page_text: 3. In die plates for manufacturing ceramic and other tiles the combination of
the die-plate a having recesses a', the slides e having attachments 3, the springs f
the loose plate b and the wedges c substantially as described and shewn."
4. In die plates for manufacturing ceramic and other tiles the combination of
the die-plate a having recesses a¹ the slides e having attachments e, the springs f
the loose plates 6 the wedges c and the lifting bolts & substantially as described
and shewn.
5. The improved apparatus for the manufacture of ceramic and other tiles con-
structed and operating, substantially as described and shewn.
1 1800
537
D
WILLIAM J. MUNDEN,
Agent for the Applicant, 75, Chancery Lane, W.C.
WILLIAM J. MUNDEN,
Agent for the Applicant, 75, Chancery Lane, W.C.