A NEW COMBINATION OF LIINERAL SUBSTANCES FOR THE PRODUCTION OF ARTIFICIAL STONE
Year: 1857

page_text: application for Letters Patent was not given within the time prescribed by
the Act.)
PROVISIONAL SPECIFICATION left by Francis Puls at the Office of
the Commissioners of Patents, with his Petition, on the 12th December
1857.
I; FRANCIS PULS, of Haverstock Hill, in the County of Middlesex, Chemist,
do hereby declare the nature of the said Invention for "A NEW COMBINATION OF
LIINERAL SUBSTANCES FOR THE PRODUCTION OF ARTIFICIAL STONE," to be as follows
(that is to say):-
My Invention, which has reference to the production of artificial stone to be
employed in the manufacture of grindstones, whetstones, oilstones, hones, or
the like, as also of lithographic stones and stones for ornamental purposes, and
as a substitute for meerschaum, consists in the combination for the above
purposes of powdered emery, flint glass, ruby, diamond, melted alumina,
oxide of iron, or similar hard mineral substances, with proportionate quantities
of line, barites, plaster of Paris, or chalk, and silicate of potash or soda, or
potash and soda powdered in solution, or in a semi-fluid state, for the pro-
duction of stone for lithographic or ornamental purposes. I combine lime or
chalk powder with silicate of potash or soda, or otherwise, as aforesaid, to
which colouring matter may be added as required; and for meerschaum I
TISH
MUSE

page_text: mix carbonate of magnesia or oxide of magnesia, or a mixture of both, with
silicate of potash, soda, or otherwise, as above, to which may be added small
proportions of slacked lime, chalk, or clay; either of the above compositions
may be pressed into moulds, either warm or cold, to give it the required shape
and render it close and compact.

page_text: the Act.)
PROVISIONAL SPECIFICATION left by Francis Puls at the Office of
the Commissioners of Patents, with his Petition, on the 12th December
1857.
I, FRANCIS PULS, of Haverstock Hill, in the County of Middlesex, Chemist,
do hereby declare the nature of the said Invention for "A NEW COMBINATION OF
MINERAL SUBSTANCES FOR THE PRODUCTION OF ARTIFICIAL STONE," to be as follows
(that is to say):
My Invention, which has reference to the production of artificial stone to be
employed in the manufacture of grindstones, whetstones, oilstones, hones, or
the like, as also of lithographic stones and stones for ornamental purposes, and
as a substitute for meerschaum, consists in the combination for the above
purposes of powdered emery, flint glass, ruby, diamond, melted alumina,
oxide of iron, or similar hard mineral substances, with proportionate quantities
of lime, barites, plaster of Paris, or chalk, and silicate of potash or soda, or
potash and soda powdered in solution, or in a semi-fluid state, for the pro-
duction of stone for lithographic or ornamental purposes. I combine lime or
chalk powder with silicate of potash or soda, or otherwise, as aforesaid, to
which colouring matter may be added as required; aud for meerschaum I
TISH
ESE

page_text: mix carbonate of magnesia or oxide of magnesia, or a mixture of both, with
silicate of potash, soda, or otherwise, as above, to which may be added small
proportions of slacked lime, chalk, or clay; either of the above compositions
may be pressed into moulds, cither warm or cold, to give it the required shape
and render it close and compact.