Year: 1896

page_text: men
We, REGINALD FEWSON AYRE, and CRAVEN,. DUNNILL & Co., LIMITED
all of the Jackfield' Encaustic Tile and Ceramic Mosaic Works,, Jackfield, in the
County of Salop, Manufacturers, do hereby declare the nature of this invention
to be as follows:-
This invention relates to the manufacture of tiles and: similar articles of the
kind provided at the back with undercut recesses for rendering the fixing secure,
and: comprises a novel.arrangement of the parts of the die for forming these undercut
recesses.
According to. our invention: the parts of the die: which form these undercut
recesses are formed upon the ends of loose strips or pieces adapted to. be inserted.
into, slots, formed in the die proper from the edge or the underside in: such. a
manner that the pattern ends project above the face of the: die: to the proper
extent.
In practice the rear ends of the loose pieces lie flush with the back of the die
plate and are formed with ribs or flanges which will prevent them from slipping too
far through the die plate. The slots into which the loose. pieces are inserted may
be vertical or inclined and the pattern ends are: all arranged in the: same direction
so that the moulded tile can be lifted from the die plate without.injury.
In manufacturing tiles with our die, the said die with the loose pieces therein is
preferably placed on the movable bottom plate of an ordinary tile press so that the
die forms with the box around it the: usual mould. The mould is then filled with
dust or plastic material and the tile made in the ordinary way; the press is now
lifted to raise the tile out of the box and the moulded. tile is removed from the die
in the direction of the projections without injuring the undercut recesses.
loose pieces when the slots into which they are inserted are. in the edge of the die
are kept in position by the bottom plate of the press and the sides of the die. box.
The plate and loose pieces may if desired be attached in any suitable way to the
top die or plunger.,
The
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
Improvements in the Manufacture of Tiles and similar. Articles.
We, REGINALD FEWSON AYRE, and CRAVEN, DUNNILL & Co., LIMITED,
all of the Jackfield Encaustic Tile & Ceramic Mosaic Works,. Jackfield, in the
County of Salop, Manufacturers, do hereby declare the nature. of: this invention
and in what manner the same is to be performed, to be particularly described aud
ascertained in and by the following statement :-
This invention relates to the manufacture of tiles and similar articles of the kind.

page_text: provided at the back with undercut recesses for rendering the fixing secure,
and comprises an arrangement of the parts of the die for forming these undercut
recesses.
-
.
According to our invention the parts of the die which mould these undercut
recesses are formed upon the ends of loose strips or pieces adapted to be inserted
into slots formed in the die proper from the edge or the underside in such a
manner that the pattern ends project above the face of the die to the proper
extent.
In practice the rear or lower ends of the loose pieces lie flush with the back of
the die plate and are formed with ribs or flanges which will prevent them from
slipping too far through the die plate. The slots into which the loose pieces are
inserted may be vertical or inclined and the pattern ends are all arranged in the
same direction so that the moulded tile can be lifted from the die plate without
injury.
To enable our invention to be fully understood we will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is a plan view of a die constructed according to our invention::
Figure 2 is a section on the line 2-2 Figure 1 but shewing the die supported
upon the movable bottom plate of a tile-press.
Figures 3 and 4 are respectively a face view and an edge view of one of the loose
pieces detached.
a is the body or plate portion of the die which, as shewn in the drawing, is plain,
but it may be fluted or channelled or otherwise suitably formed..
b, b are the loose pieces which are inserted into slots formed in the body portion a
the upper ends of the said loose pieces projecting in an inclined direction above the
face of the body portion a to an extent corresponding to the depth of the recesses
to be formed in the back of the tile. These pieces b, b have their lower ends
arranged to lie flush with the back of the body portion of the die.
d, d are ribs which are formed at the lower ends of the said loose pieces and serve
to limit the extent to which the upper ends of the pieces b project above the
surface of the body part a.
As shewn in the drawing the slots for receiving the loose pieces b, b are formed
both at the edge and in the body of the die; it is to be understood, however, that
the said slots may all be formed either in the body or at the edge of the die.
Although we have shewn four of the loose pieces, we may arrange any other
desirable number in connection with the die.
In manufacturing tiles with our die, the said die with the loose pieces therein is
preferably placed on the movable bottom plate c of the ordinary tile press so that
the die forms with the box around it the usual mould. The mould is then filled
with dust or plastic material and the tile made in the ordinary way. The press is
now lifted to raise the tile out of the box and the moulded tile is removed from the
die in the direction of the projections without injuring the undercut recesses.
The
loose pieces inserted in the slots in the edge of the die are kept in position laterally
by the sides of the die box.
The plate and loose pieces may if desired be attached in any suitable way to the
movable bottom c.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improvement in the manufacture of tiles and similar articles provided at
the back with undercut recesses, consisting in pressing or moulding them upon a
die having projecting pieces upon its surface for forming the said undercut
recesses in the tile the said projections being forined upon loose pieces of metal
inserted into slots formed in the die plate, substantially as described.

page_text: 2. Dies constructed substantially as herein before described for use in the manu--
facture of tiles and similar articles of the kind indicated.
Dated this 5th day of April 1897.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants..