IMPROVEMENTS IN SMELTING
Year: 1884

page_text: I ROBERT STONE, of 101 Leadenhall Street, in the City of London, Engineer, do
hereby declare the nature of my said Invention for "IMPROVEMENTS IN SMELTING,"
to be as follows:→
Whereas in the ordinary process of smelting, the furnace is fed with coal, lime-
stone, and ore, in certain proportions.
Now the object of my invention is to dispense with the coal, and to use chalk,
lime or lime stone, as herein after described, and thereby to obtain a very high
quality of pure refined metal, which can be run into moulds or castings direct
from the furnace, and thereby also to save the expense of puddling or rolling mills
in many forins of manufacture. I saturate the chalk, lime, or lime stone, in
petroleum spirit, petroleum, or other inflammable oil, and afterwards in vitriol or
oil of vitriol. I also, in some cases, grind the chalk, lime, or lime stone and ore
together or separately by means of the grinding apparatus and mills described in
my Specifications No" 2070 0 21711 41831 240 153 and 14928%, or by means
of a screw press or mill, and afterwards mix therewith the inflammable oils
and vitriol or oil of vitriol together or separately. I then add a proper proportion
of tar to cause the materials to adhere together, and enable them to receive the
shape of and to be formed in moulds by the moulding machine mentioned in my
said former Specification N° 153, whereby the same are formed into blocks or
brickets.
By these arrangements I obtain a very intense heat in the furnace, to which
I also apply the blast of hot or cold air which is forced under and through the
heated mass of material by means of a blowing apparatus, applied at a suitable
pressure.

page_text: I ROBERT STONE, of 101 Leadenhall Street, in the City of London, Engineer, do
hereby declare the nature of my Invention for "IMPROVEMENTS IN SMELTING" and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
Whereas in the ordinary process of smelting, the furnace is fed with coal, lime-
stone, and ore, in certain proportions.
Now the object of my invention is to dispenso with the coal, and to use chalk,
lime or lime stone, as herein after described, and thereby to obtain a very high
quality of pure refined metal, which can be run into moulds or castings direct from
the furnace, and thereby also to save the expense of puddling or rolling mills in
many forms of manufacture.
I saturate the chalk, lime, or lime stone, in petroleum spirit, petroleum, or other
inflammable oil, and afterwards in vitriol or oil of vitriol. I sometimes mix all
such materials together and in some instances I dispense with the vitriol. I also
in some cases, grind the chalk, lime, or lime stone and ore together or separately
by means of the grinding apparatus and mills described in my Specification
No. 153, or by means of a screw press or mill, and afterwards mix therewith the
inflammable oils and vitriol, or oil of vitriol together or separately. I then add a
proper proportion of tar to cause the materials to adhere together and enable them
to receive the shape of and to be formed in moulds by the moulding machine
mentioned in my said former Specification, No. 153, whereby the same are formed
into blocks or brickets.
By these arrangements I obtain a very intense heat in the furnace, to which
I also apply the blast of hot or cold air which is forced under and through the
heated mass of material by means of a blowing apparatus, applied at a suitable
pressure.
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
1. The method of smelting by means of chalk or lime mixed with inflammable
oils, or liquids, and with or without the addition of vitriol, substantially as herein
before described.
ail: su