Improvements in the Construction of Facing Tiles and the like, and in Apparatus for the Manufacture of same.
Year: 1896

page_text: Date of Application, 29th Feb., 1896
Complete Specification Left, 2nd Apr., 1896-Accepted, 2nd May, 1896
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Facing Tiles and the like, and
in Apparatus for the Manufacture of same.
We, JAMES HOLROYD, Ceramist, and ROBERT BOND, Potter, both of
Burmantofts, Leeds, in the County of York, do hereby declare the nature of this.
invention, to be as follows:-
Our invention refers to tiles employed for facing walls, ceilings, and the like,.
and the object of our invention is to construct the said tiles in such a manner that
the cement employed for fixing the tiles in position may have a good and firm.
hold on the backs of the said tiles, thus effectually preventing them falling or
coming away after they have been set in position.
According to our invention, we employ a die or mould having a number of
projectious on same, the inner and outer edges of which forin circles or portions of
circles, having a common centre on the surface of the die. The above projections
are wedge shaped, the sloping surfaces all sloping in one direction round the centre,
and the front edges on the said projections are formed with an undercut, which
latter may be extended to the inner and outer edges if desired.
The tile is formed under pressure on the said die or mould, the powder or
material forming the tile filling in the undercut edges of the projections; and when
the required pressure has been given and the mould is opened, the said tile may be
removed from the die by twisting it about its centre, which action withdraws the
projections from the undercuts and releases the tile.
Dated this 29th day of February 1896.
BREWER & SON,
London and Leeds, Agents for the Applicants.
Improvements in the Construction of Faoing Tiles and the like, and
in Apparatus for the Manufacture of same.
We, JAMES HOLROYD, Ceramist, and ROBERT BOND, Potter, both of
Burmantofts, Leeds, in the County of York, 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 :-
Our invention refers to tiles employed for facing walls, ceilings and the like, and
the object of our invention is to construct the said tiles in such a manner that the
cement employed for fixing the tiles in position may have a firm hold on the backs
of the said tiles, thus effectually preventing them falling or coming away after they
have been set in position.
In order that our invention may be clearly understood, we will proceed to.
describe same with reference to the accompanying drawing in which similar letters
refer to like parts in all the figures.
Fig. 1 is a sectional elevation of a press shewing the upper and lower dies in.
position when pressing a tile constructed according to this invention, and
Fig. 2 is a plan of the lower die.

page_text: Fig. 3 is a plan of the tile removed from the press, and
Figs. 4, 5, 6 and 7 are detail views.
According to our invention, we employ a die or mould A having a number of
projections formed on the surface of same, the inner and outer edges B' and B'
of the Enid projections being concentric and having a common centre on the surface of
the die. The projections B are wedge shaped, the slanting surfaces all sloping in
one direction round the centre, and the front edges C of the said projections B are
formed with an undercut, as seen in full at Fig. 1 and in dotted lines at Fig. 2.
The projections B are made slightly narrower at the front than at the back, as will
be seen by reference to Fig. 2.
The tile is formed under pressure on the die A, the powder or material forming
the tile filling in the undercut edges of the projections; and when the required
pressure has been given and the die is raised clear of the mould, the tile may
be removed from the die by twisting it about its centre, which action withdraws
the projections from the undercuts, and relenses the tile.
The undercuts formed in the tile are shewn in section at Fig. 4, and the sides of
the recess formed by the projection B are shewn to bo vertien (see Fig. 5). We
can however make the sides of the recess of an undercut form hy undercutting the
sides of the projections B, and Fig. 7 shews this form of recess in cross section,
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be perfarmed, we declare that what
we claim is :-
1. In the manufacture of facing tiles and the like, the employment of a die having
a number of underent projections on same, all radiating from a common centre,
substantially as set forth.
2. The die A. having radiating undercut projections 1 on the surface of same,
substantially as and for the purposes set forth.
3. The undercut projections B having their inner and outer edges and B
concentric, the said projections B being slightly narrower at the front than ut the
back, all constructed in such a manner that the tile may be readily removed on giving
same a slight rotary twist, substantially as set forth.
4. The tile having underent recesses in same, substantially as described with
reference to Figs. 3, 4, 5, 6, and 7 of the necompanying drawing.
Dated this 2nd day of April 1896.
BREWER & SON,
London and Leeds, Agents for the Applicants.