Improvements in Tiles, Faience Ware and other Fictile Ware Required to be Cemented to Plane or other Surfaces.
Year: 1890

page_text: Date of Application, 22nd Dec., 1890
Complete Specification Left, 22nd Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Tiles, Faience Ware and other Fictile Ware
Required to be Cemented to Plane or other Surfaces.
I, GEORGE SWIFT of 45 The Temple, Dale Street, in the City of Liverpool,
Tile Dealer & Mosaic Worker, do hereby declare the nature of this invention to
be as follows:-
In tiles, faience ware, chimney pots and numerous other articles made of fictile
materials which have to be cemented to flat or other surfaces, great difficulty has
been experienced in making them hold perfectly. Terra cotta, for instance, and other
sigus fixed against walls by means of Portland cement have fallen off causing fatal
accidents. This is owing to the fact that the only means of dovetailing them at
present are simply moulding ridges or roughened surfaces on the article or moulding
the article in a dovetailed base & then withdrawing it therefrom by pressing to
one side.
In withdrawing them from the dovetailed slides, a large number of the
articles are usually spoiled through fracture or bending.
Now my invention is designed to form a much better and more complete dovetail,
and with no chance of spoiling the article. It consists in using small truncated
cones or any other flat patterns formed of wood or other combustible material
or even of metals which will easily fuse and run out, arranged so as to have a dove-
tail in one or both dimensions, that is both in the length and in the breadth of the
article. These are placed in the mould first with their smaller sides downwards,
the material is then run into the mould and pressed solid.
Dated this 20th day of December 1890.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Tiles, Faience Ware and other Fictile Ware
Required to be Cemented to Plane or other Surfaces.
I, GEORGE SWIFT of 45, The Temple, Dale Street in the City of Liverpool,
Tile Dealer and Mosaic Worker, 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:-
In tiles, faience ware, chimney pots and numerous other articles made of fictile
materials which have to be cemented to flat or other surfaces, great difficulty has
been experienced in making them hold perfectly; terra cotta, for instance, and
other signs fixed against walls by means of Portland cement have fallen off, causing
fatal accidents. This is owing to the fact that the only means of dovetailing them
at present are simply moulding ridges or roughened surfaces on the article, or
moulding the article in a dovetailed base and then withdrawing it therefrom by press-
ing to one side. In withdrawing them from the dovetailed slides, a large number
of the articles are usually spoiled through fracture or bending.
Now my invention is designed to form a much better and more complete dovetail,
and with no chance of spoiling the article. It consists in using small truncated
cones or any other flat patterns formed of wood or other combustible material or
even of metals which will easily fuse and run out, arranged so as to have a dovetail
in one or both dimensions, that is both in the length and in the breadth of the
article. These are placed in the box or die first with their smaller sides downwards,
the dust is then thrown in and pressed solid.

page_text: In practice, I have found the best material to make the dovetail strips of is equal
measures of sawdust and plaster of paris mixed together with sufficient water to
make a thin mud. This is run into moulds of requisite size and allowed to harden.
The strips are preferably for ordinary wall tiles about 1 of an inch thick and the
bevel about 45 degrees. On burning, the strips contract and fall out like sand or
friable soil.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
Forming dovetail grooves or broad shallow indentations with dovetail edges in
ware such as described, during its manufacture, by placing in the boxes, dies or
moulds dovetail cores (easily destroyed in the burning, or otherwise afterwards.
removable), inserting the dust or other material and pressing and burning in the
ordinary manner.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.