Year: 1885

page_text: I, FREDERICK SIEMENS, of No 12 Queen Anne's Gate, Westminster in the
County of Middlesex, Engineer, do hereby declare the nature of my invention to be
as follows:-
My invention relates to a method of lining furnaces or repairing their linings,
which I effect as follows. Having heated the furnace till the interior surface of
the brick work, or other material of which it is constructed, has become softened by
its partial fusion, I, by means of a steam or air injector, introduced through
suitable doors or holes in the sides or roof, direct a blast of pulverulent material,
such as sand, against the softened face of the structure to which the powder
adheres. When the layer of lining thus applied, becomes softened in its turn, an
additional quantity of the pulverulent material may be directed over it so as to
thicken the layer; and thus, by continued heating and application of the blast, the
lining may be more or less thickened as may be desired. In this manner, the
whole interior of the furnace may be lined, or patches of lining that have given
way may be made good or thickened. The pulverulent material employed varies
according to the nature of the lining required. Generally, where very high heats
are employed, a sand, as purely silicious as possible, is to be preferred. Basic
materials, such as lime or magnesia, alone or in conjunction with other substances,
may be used for lining furnace beds in the manner described; for the sides and
roof, the material should be such as will have its surface so far fused or softened
by heat that a fresh layer of the material will adhere to it.

page_text: I, FREDERICK SIEMENS, of N° 12 Queen Anne's Gate, Westminster, in the
County of Middlesex, Engineer, 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:-
My invention relates to a method of lining furnaces or replacing their linings.
which I effect as follows.
Having heated the furnace till the interior surface of the brickwork or other
material of which it is constructed has become softened by its partial fusion, I, by.
means of a steam or air injector, introduced through suitable doors or holes in the
sides or roof, direct a blast of pulverulent material, such as sand, against the
softened face of the structure to which the powder adheres. When the layer of
lining thus applied becomes softened in its turn, an additional quantity of the
pulverulent material may be directed over it so as to thicken the layer; and thus,
by continued heating and application of the blast, the lining may be more or less
thickened as may be desired. In this manner the whole interior of the furnace
may be lined, or patches of lining that have given way may be made good or
thickened. The pulverulent material employed varies according to the nature of
the lining required. Generally where very high heats are employed, a sand as
purely silicious as possible is to be preferred. Basic materials, such as lime or
magnesia, alone or in conjunction with other substances, may be used for lining
furnace beds in the manner described; for the sides and roof, the material should
be such as will leave its surface so far fused or softened by heat that a fresh layer
of the material will adhere to it.
The accompanying drawing is a section of a furnace illustrating the application
of my method of lining it or repairing the lining. A is an injector supplied with
a powerful current of air from a pump, fan or other blowing apparatus, or of
superheated steam, and fed from a hopper B with pulverulent material such as is
above mentioned, so that a stream C of the material is directed on any part of
the roof or sides, or it might be on the bed.
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
The herein described method of lining a furnace by directing on its heated
interior surface a blast of suitable pulverulent material.
ABEL & IMRAY,
Agents for the Applicant.