Year: 1888

page_text: We WILLIAM EDWARD CONSTABLE and JOSEPH JOSEPH both of 40 King Williamı
Street in the City of London, trading as W. E. Constable & Co., Stone Merchants do
hereby declare the nature of this invention to be as follows:-
--
The ingredients used in the manufacture of artificial stone according to our
invention are Limestone rock, preferably that found in the County of Derbyshire,
Portland cement, Sulphuric acid, and water.
In carrying our invention into effect we reduce the Limestone rock to pieces
of say about of an inch in size which may be accomplished in any suitable stone
breaking machine, or in any other convenient manner. The stone so prepared is
mixed with Portland cement in or about the proportions of three and a half parts of
stone to one part of cement, sufficient water being added to render the mass workable.
This is accomplished by mixing in suitable troughs or vats and when the stone and
cement are sufficiently incorporated and soaked in the aforesaid troughs or vats the
mixture is placed in moulds preferably made of wood lined with oiled steel and of any
required shape according to the purpose for which the artificial stone is intended to be
used, where it is allowed to set or harden.
When the blocks are hard enough they are removed from the moulds and placed in
troughs, vats, or vessels containing a solution of water and sulphuric acid the pro-
portions of which may vary, but we have found ninety nine parts of water to one
part of sulphuric acid to answer the purposes of our invention well.
The artificial stone prepared as above described should be ready for use in the
manufactures in about one month after removal from the sulphuric acid and water
bath.
We do not limit color to the nuasion meanatio

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of Artificial Stone.
We, WILLIAM EDWARD CONSTABLE, and JOSEPH JOSEPH, both of 40 King William
Street, in the City of London, trading as W. E. Constable & Co., Stone Merchants,
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 :-
The ingredients used in the manufacture of artificial stone according to our
invention are Limestone rock, preferably that found in the County of Derbyshire,
Portland cement, Sulphuric acid and water.
In carrying our invention into effect we reduce the Limestone rock to pieces of say
about of an inch in size which may be accomplished in any suitable stone breaking
machine, or in any other convenient manner. The stone so prepared is mixed with
Portland cement in or about the proportions of three and a half parts of stone to one
part of cement, sufficient water being added to render the mass workable. This
mixing may be conveniently accomplished in suitable troughs or vats and when the
stone and cement are sufficiently incorporated and soaked the mixture is placed in
moulds preferably made of wood lined with oiled steel and of any required shape
according to the purpose for which the artificial stone is intended to be used, where
it is allowed to set or harden.
When the blocks are hard enough they are removed from the moulds and placed in
troughs, vats or vessels, containing a solution of water and sulphuric acid, the pro-
portions of which may vary, but we have found ninetynine parts of water to one part
of sulphuric acid to answer the purposes of our invention well, and these blocks may
be immersed in the solution for about 21 days.
The artificial stone prepared as above described would under ordinary circumstances
be ready for use in about one month after removal from the sulphuric acid and water
bath. We do not limit ourselves to the precise proportions before named.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that we are
aware that blocks of artificial stone have been formerly treated by immersion in a
solution of sulphuric acid and we make no claim for such immersion, except when
the blocks are made in the manner herein specified, but what we claim is :-
An artificial stone composed of Derbyshire limestone rock, Portland cement, and
water, in or about the proportions named, and subsequently treated with sulphuric
acid and water, all substantially in the manner hereinbefore described together with
any mere modification or modifications thereof.
Dated this Sixth day of April 1888.

page_text: Date of Application, 22nd Feb., 1888
Complete Specification Left, 26th Oct., 1888
Complete Specification Accepted, 7th Dec., 1888
We WILLIAM EDWARD CONSTABLE and JOSEPH JOSEPH both of 40 King William:
Street in the City of London, trading as. W. E. Constable & Co., Stone Merchants do
hereby declare the nature of this invention to be as follows:-
The ingredients used in the manufacture of artificial stone according to our
invention are Limestone rock, preferably that found in the County of Derbyshire,
Portland cement, Sulphuric acid, and water.
In carrying our invention into effect we reduce the Limestone rock to pieces
of say about of an inch in size which may be accomplished in any suitable stone
breaking machine, or in any other convenient manner. The stone so prepared is
mixed with Portland cement in or about the proportions of three and a half parts of
stone to one part of cement, sufficient water being added to render the mass workable
This is accomplished by mixing in suitable troughs or vats and when the stone and
cement are sufficiently incorporated and soaked in the aforesaid troughs or vats the
mixture is placed in moulds preferably unade of wood lined with oiled steel and of any
required shape according to the purpose for which the artificial stone is intended to be
used, where it is allowed to set or harden.
When the blocks are hard enough they are removed from the moulds and placed in
troughs, vats, or vessels containing a solution of water and sulphuric acid the pro-
portions of which may vary, but we have found ninety nine parts of water to one
part of sulphuric acid to answer the purposes of our invention well.
The artificial stone prepared as above described should be ready for use in the
manufactures in about one month after removal from the sulphuric acid and water
bath.
We do not limit ourselves to the precise proportions before named:

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of Artificial Stone.
We, WILLIAM EDWARD CONSTABLE, and JOSEPH JOSEPH, both of 40 King William
Street, in the City of London, trading as W. E. Constable & Co., Stone Merchants,
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 :-
The ingredients used in the manufacture of artificial stone according to our
invention are Limestone rock, preferably that found in the County of Derbyshire,
Portland cement, Sulphuric acid and water.
In carrying our invention into effect we reduce the Limestone rock to pieces of say
about of an inch in size which may be accomplished in any suitable stone breaking
machine, or in any other convenient manner. The stone so prepared is mixed with
Portland cement in or about the proportions of three and a half parts of stone to one
part of cement, sufficient water being added to render the mass workable. This
mixing may be conveniently accomplished in suitable troughs or vats and when the
stone and cement are sufficiently incorporated and soaked the mixture is placed in
moulds preferably made of wood lined with oiled steel and of any required shape
according to the purpose for which the artificial stone is intended to be used, where
it is allowed to set or harden.
When the blocks are hard enough they are removed from the moulds and placed in
troughs, vats or vessels, containing a solution of water and sulphuric acid, the pro-
portions of which may vary, but we have found ninetynine parts of water to one part
of sulphuric acid to answer the purposes of our invention well, and these blocks may
be immersed in the solution for about 21 days.
The artificial stone prepared as above described would under ordinary circumstances
be ready for use in about one month after removal from the sulphuric acid and water
bath. We do not limit ourselves to the precise proportions before named.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
An artificial stone composed of Derbyshire limestone rock, Portland cement, and
water, in or about the proportions named, and subsequently treated with sulphuric
acid and water, all substantially in the manner herein before described together with
any mere modification or modifications thereof.
Dated this Sixth day of April 1888