AN IMPROVEMENT IN THE MANUFACTURE OF PORCELAIN, CHINA, AND ALL KINDS OF POTTERY WARE, BRICKS, TILES, AND OTHER MOULDED ARTICLES
Year: 1876

page_text: LETTERS PATENT to Henry Vatcher, of the Island of Jersey, for the Invention
of "AN IMPROVEMENT IN THE MANUFACTURE OF PORCELAIN, CHINA, AND ALL
KINDS OF POTTERY WARE, BRICKS, TILES, AND OTHER MOULDED ARTICLES."
PROVISIONAL SPECIFICATION left by the said Henry Vatcher at the Office of
the Commissioners of Patents on the 28th April 1876.
HENRY VATCHER, of the Island of Jersey. "AN IMPROVEMENT IN THE MANU-
FACTURE OF PORCELAIN, CHINA, AND ALL KINDS OF POTTERY WARE, BRICKS, TILES,
AND OTHER MOULDED ARTICLES."
My Invention relates to the manufacture of porcelain, china, stoneware, parian,
terra-cotta, encaustic and other tiles, busts and architectural mouldings, bricks,
and all kinds of pottery ware, and consists in the employment, in combination with
the clays of which the porcelain, china, or other ware is usually made, of sand of a
kind not hitherto used for the purpose. This sand is of a yellowish color and is
found in the Island of Jersey.
By my Invention the china and ware will be enabled to stand a greater amount
of heat in the oven, to be fired harder, thereby causing less loss in waste and
defects, together with a general improvement in the quality of the china and ware
produced.
The sand must first be ground to an impalpable powder, or milk slop, as it is
termed, and it is then mixed with the various ingredients from which the articles
are usually made, the proportion of the sand relatively to the other ingredients
used being small, but the proportion depends entirely upon the heat the
manufacturer desires to obtain. The more that is added the higher may be the
heat attained, and the purer will be the china and ware.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Vatcher in the Great Seal Patent Office on the 25th October
1876.
HENRY VATCHER, of the Island of Jersey. "AN IMPROVEMENT IN THE MANU-
FACTURE OF PORCELAIN, CHINA, AND ALL KINDS OF POTTERY WARE, BRICKS, TILES,
AND OTHER MOULDED ARTICLES."
My Invention relates to the manufacture of porcelain, china, stoneware, parian, terra-
cotta, encaustic and other tiles, busts and architectural mouldings, bricks, and all kinds
of pottery ware, and the Invention consists in the employment, in combination with
the clays usually employed in making the porcelain, china, or ware, of a particular
kind of sand not heretofore used for any similar purpose. This sand is of a yellowish
color, and is found in the Islands of Jersey, Guernsey, Alderney, and Serk, both on the
seashore and also dug out inland in said Islands.
By the introduction of this sand as an ingredient the china and ware will
be rendered capable of standing a higher degree of heat in the oven, and may
therefore be fired harder, the resulting advantages being less loss by waste and
defects, together with a general improvement in the quality of the china and ware
produced.
The sand must first be ground in water or otherwise to an impalpable powder, or
milk slop as it is termed, which is then mixed with the ordinary materials of which
the articles are usually made. The proportion of the sand relatively to the other
ingredient or ingredients used would generally be about 1/3rd, but may be either
more or less. I do not therefore limit myself to any particular proportion, as this
depends entirely upon the degree of heat to which the manufacturer desires
to subject the goods. The greater the proportion of sand the higher may be
the heat at which the goods are fired, and the purer will be the china and
ware.
Having described the nature of the said Invention and the manner of performing
the same, I declare that what I claim as the Invention to be protected by the
herein-before in part recited Letters Patent is the application and employment in
the manufacture of porcelain, china, stoneware, parian, terra-cotta, encaustic and
other tiles, busts and architectural mouldings, bricks, and all kinds of pottery
ware of the particular kind of sand herein specified as and for the purpose set
forth.
In witness whereof, I, the said Henry Vatcher, have hereunto set iny hand and
seal, this Sixteenth day of October, in the year of our Lord One thousand
icht hundrad and cavouteois
Witness,
THOS. HUGHES,
of Burslem,
Earthenware Manufacturer.
HENRY VATCHER. (L.S.)