IMPROVEMENTS IN THE MANUFACTURE OF · ORNAMENTAL TILES ADAPTED PARTICULARLY TO FORM PARTS OF STOVES. BUT WHICH ARE ALSO APPLICABLE TO OTHER USES."
Year: 1881

page_text: LETTERS PATENT to Godfrey Jobson, of Derby, in the County of Derby, Stove
Manufacturer, for an Invention of "IMPROVEMENTS IN THE MANUFACTURE OF
· ORNAMENTAL TILES ADAPTED PARTICULARLY TO FORM PARTS OF STOVES.
BUT WHICH ARE ALSO APPLICABLE TO OTHER USES."
PROVISIONAL SPECIFICATION left by the said Godfrey Jobson at the Office
of the Commissioners of Patents on the 6th September 1881.
GODFREY JOBSON, of Derby, in the County of Derby, Stove Manufacturer.
" IMPROVEMENTS IN THE MANUFACTURE OF ORNAMENTAL TILES ADAPTED.
PARTICULARLY TO FORM PARTS OF STOVES, BUT WHICH ARE ALSO APPLICABLE
TO OTHER USES."
Ornamental tiles used as parts of stoves have heretofore been produced with flat
or level surfaces, or surfaces but slightly departing from the flat or the level, and
the object of my Invention is to obtain ornamental tiles of the character referred
to of a considerably curved surface or with the surface thereof composed of two or
more curves, and so that whilst they incline inwards towards the centre of the
stove or otherwise, or for other purpose, they may incline in either direction and be
composed of one or more deep curves as well; also as to the curve or form of any
particular part of the stove or part to which the tiles are to be applied.
In carrying out my improvements I employ what is called the dry clay process,
in which form is given to the powdered clay by the extent of compression given to
it, and the moulds are formed not only with their surfaces to the curved forms
desired to be given them but also to the desired inclination of such curves, and so
that in the formation of the respective tiles the respective edges may incline in the
directions desired to produce a correct fitting together when in their places of a
series of such tiles.
The sides of the tiles may be at various angles according to the relative position
they are to bear to each other.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Godfrey Jobson in the Great Seal Patent Office on the 4th March
1882.
GODFREY JOBSON, of Derby, in the County of Derby, Stove Manufacturer.
"IMPROVEMENTS IN THE MANUFACTURE OF ORNAMENTAL TILES ADAPTED
PARTICULARLY TO FORM PARTS OF STOVES, BUT WHICH ARE ALSO APPLICABLE
TO OTHER USES."
Ornamental tiles used as parts of stoves have heretofore been produced with flat
or level surfaces, or surfaces but slightly departing from the flat or the level, and
the object of my Invention is to obtain ornamental tiles of the character referred
to of a considerably curved surface or with the surface thereof composed of two or
more curves, and so that whilst they incline inwards towards the centre of the
stove or otherwise, or for other purpose, they may incline in either direction and be
composed of one or more deep curves as well; also as to the curve or form of any
particular part of the stove or part to which the tiles are to be applied.
In carrying out my improvements I employ what is called the dry clay process,
in which form is given to the powdered clay by the extent of compression given to
it, and the moulds are formed not only with their surfaces to the curved forms
desired to be given them but also to the desired inclination of such curves, and so
that in the formation of the respective tiles the respective edges may incline in the
directions desired to produce a correct fitting together when in their places of a
series of such tiles.
The sides of the tiles may be at various angles according to the relative position
they are to bear to each other.
But that the Invention inay be more fully understood, I will by the aid of the
accompanying Drawings proceed to describe more in detail means employed by me
in carrying the same into effect.
In the Drawing I have shewn several different forms of tile, and three different
methods of making one shape.
Figures 1 and 3 are sections on line A, B, of Figure 2, and they represent
different sections of tile made in the same way. Figures 4 and 6 are tiles of a
similar section to that indicated by Figure 1, but they are each made in a different
way, the sinall pieces or "segments" a and b in Figure 4 being loose, whilst they
are fast to the upper and lower dies in Figure 6. Figures 7 and 8 represent dies
for making quadrant shaped tiles of same section as Figures 1, 4, and 6, four of
them put together would produce a basin like form or structure. Figures 4 and 6
are sections on the line C, D, Figure 5; and Figure 7 is a section on the line E, F,
Figure 8.
I will now describe the mode of operating them when pressing tiles. Each, with
the exception of Figure 4, is composed of three pieces, the "upper die" 1, the lower
die 2, and the box or frame 3.
The upper die 1 may be attached to the slide of an ordinary tile press in the
usual way by means of the hollow screw shewn; the box 3 with the lower die 2
inside it is then adjusted exactly under the upper die 1, so that the upper die 1
may be free to work in and out of the box 3, and the lower die 2 is free also, but
it is capable of being moved vertically by the lower ram of the press in the usual
way to "deliver" the tiles when formed by the pressure. The box 3 is clamped by
screws to the bed of the tile press as is usual.

page_text: The upper die 1 having been lifted clear of the box by raising the slide of the
screw press, and the lower die 2 being on its seat, as shewn in Figure 1, the
space c between the top of the box and the lower die is filled with powdered clay;
the upper die is then brought down upon the clay until it is compressed to about
half its original thickness; it then forms a tile c, c, which is delivered from the
die by raising the upper die 1 and raising the lower ram of the press, and with
it of course the lower die 2 with the tilo upon it clear of the box 3. The
operation is then repeated as often as desired, and the tiles are then fired in the
usual way.
In Figure 4, before the box is filled with dry clay powdered, the small piece or
segment a is put into its place on the lower die, the clay is then filled in and the
piece b is pressed into its place until its upper surface is level with the box top;
the upper die 1 is then brought down and presses it home and forms the edge of
the tile radial with the curve.
The pieces a, b, are as long as the box is wide.
Having thus described my Invention and means which I adopt in carrying the
same into effect, I would have it understood that I do not confine myself to the
precise details shewn and described, as these may be varied without departing from
the peculiar character of my Invention, but what I claim is the manufacture of
ornamental tiles adapted particularly to form parts of stoves, but which are also
applicable to other uses, so that whilst such tiles may have considerably curved
surfaces their edges may fit accurately together and to their places, substantially as
described.
In witness whereof, I, the said Godfrey Jobson, have hereunto set my hand
and seal, this Second day of March, One thousand eight hundred and
eighty two
GODFREY JOBSON. (L.S.)