Improvements in or appertaining to the Manufacture of Figures, Ornaments, Shaped Blocks, and Artificial Building Stones and the like of Various Colours.
Year: 1890

page_text: Date of Application, 2nd Aug., 1890
Complete Specification Left, 4th May, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in or appertaining to the Manufacture of Figures,
Ornaments, Shaped Blocks, and Artificial Building Stones and the
like of Various Colours.
A communication from abroad by KRUTINA and MÖHLE, of Malstatt, near
Saarbrucken, Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E. of the Agency for Foreign
Patent Solicitors, & Lord Street, Liverpool and 6 Bank Street, Manchester, both
in the County of Lancaster, and 323 High Holborn in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention to be as follows:-
The use of cement for the production of artificial building stones and shaped
blocks is well known and has been long used in practice. The stones are made in
the following manner: Cement, with or without the addition of sand and coloured
minerals, is stirred up with much water poured into lime or gypsum moulds and then
allowed to solidify therein. The stones made in this manner have however the
drawback of not possessing great solidity and by reason of speedy cracking become
unsightly and liable to perish. These drawbacks are removed by the following
process.
Blast furnace slag of the special kind obtained in the manufacture of foundry pig
iron is granulated by being run off into water, then finely pulverized and thoroughly
mixed with cement, with or without the addition of soda in the proportion of 1 part
cement, 1 to this soda to 1 to 8 parts pulverized slag. This mixture is moistened
with only as much water, as to be just damp enough to work and is then rammed
firmly into iron, wood, or gypsum moulds.
The moulds can be removed immediately after the ramming in, but it is better to
do this only after the lapse of from one to five hours.
If
A product is then obtained much resembling natural sandstone but far cheaper
and far more durable, which also can be worked far better than natural stone.
it be desired to obtain coloured sandstone, the requisite coloured minerals are added
to the mixture of slag powder and cement. For rough work and also for the inside
of the shaped blocks gravel or small pieces of slag can also be added to the
mixture.
Only the slag produced in the manufacture of foundry pig iron and this even
only when in the finest pulverized condition is suitable for the required purpose.
Other slags, or such as are not perfectly finely ground must not be employed.
Dated this 1st day of August 1890..
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or appertaining to the Manufacture of Figures,
Ornaments, Shaped Blocks, and Artificial Building Stones and the
like of Various Colours.
A. communication from abroad by KRUTINA and MÖHLE, of Malstatt, near
Saarbrucken, Empire of Germany.
I WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool and 6 Bank Street, Manchester, both
in the County of Lancaster, & 323 High Holborn in the County of Middlesex,
Civil Engineer do hereby declare the nature of this invention and in what manner
L
Price Ail.]

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
The use of cement for the production of artificial building stones and shaped
blocks is well known and has long been used in practice.
The stones are made in the following manner :-
Cement, with or without the addition of sand and coloured minerals, is stirred up
with much water, poured into lime or gypsum moulds and then allowed to solidify
therein. The stones made in this manner have however the drawback of not
possessing great solidity, and, by reason of speedy cracking, become unsightly and
liable to perish. These drawbacks are removed by the following process:
Blast furnace slag of the special kind obtained in the manufacture of foundry pig
iron is granulated by being run off into water, then finely pulverised and thoroughly
mixed with cement, with or without the addition of soda in the proportion of 1 part
cement, to part soda to 1 to 8 parts pulverised slag. This mixture is
moistened with only as much water, as to be just damp enough to work and is then
rammed firmly into iron, wood, or gypsum moulds.
The moulds can be removed immediately after the ramming in, but it is better
to do this only after the lapse of from one to five hours.
A product is then obtained much resembling natural sandstone but far cheaper
and far more durable, which also can be worked far better than natural stone. If
it be desired to obtainfcoloured sandstone, the requisite coloured minerals are added
to the mixture of slag powder and cement. For rough work and also for the inside
of the shaped blocks, gravel or small pieces of slag can also be added to the
mixture.
Only the slag produced in the manufacture of foundry pig iron, and this even
only when in the finest pulverised condition, is suitable for the required purpose.
Other slags, or such as are not perfectly finely ground must not be employed.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
1. The improved material for the purposes hereinbefore described, and which
consists of a mixture of blast furnace slag (such as produced in the manufacture of
foundry pig iron) in a very finely pulverised condition, with cement and with or
without the addition of soda dissolved in water, substantially as hereinbefore
described.
2. The manufacture of figures, ornaments, shaped blocks and artificial building
stones and the like from the material described in Claim 1, by ramming the same
into moulds in a suitably moist condition.
1001
WM. P. THOMPSON & Co.,
Agents for the Applicant.