IMPROVEMENTS IN FURNACES AND OTHER STRUCTURES AND PLANT INTENDED TO RESIST INTENSE HEAT to be as follows
Year: 1884

page_text: I, HENRY DAVIS POCHIN of Barn Elms Barnes in the County of Surrey
Manufacturing Chemist do hereby declare the nature of said invention for
"IMPROVEMENTS IN FURNACES AND OTHER STRUCTURES AND PLANT INTENDED TO
RESIST INTENSE HEAT to be as follows:-
"J
According to my invention I line furnaces or other structures or plant intended
to resist intense heat with a lining of chromato of iron (chrome ore).
One method of effecting this is as follows:-Lumps of chromate of iron (chrome
ore) are dressed so that the sides will fit each other fairly well and placed in situ
and then the interstices are filled up with some suitable binding material such as
fire clay, tar, or pitch. Or without dressing the lumps of chromate of iron (chrome
ore) I form a bed or backing of fire-clay, tar, pitch, or such like material and stud
it as completely as possible in the inner, or exposed side or surface with masses of
chrome ore so that as far as possible the chrome ore forms the lining and is the
material submitted to the action of the great heat.
W. LLOYD WISE,
Per F. J. Brougham,
Applicant's Agent.

page_text: I, HENRY DAVIS POCHIN, of Barn Elms, Barnes, in the County of Surrey,
Manufacturing Chemist, do hereby declare the nature of my invention for
"IMPROVEMENTS IN FURNACES AND OTHER STRUCTURES AND PLANT INTENDED TO
RESIST INTENSE HEAT and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:-
"
According to my invention I line furnaces or other structures or plant intended
to resist intense heat with a lining of chromate of iron (chrome iron ore).
One method of effecting this is as follows:-Lumps of chromate of iron (chrome
iron ore) are dressed so that the sides will fit each other fairly well and are placed
in situ and then the interstices are filled up with some suitable binding material
such as fire clay, tar, or pitch. Or without dressing the lumps of chromate of iron
-(chrome iron ore) I form a bed or backing of fire clay, tar, pitch, or such like
material and stud it as completely as possible in the inner, or exposed side or
surface with masses of chrome ore so that as far as possible the chrome ore forms
the lining and is the material submitted to the action of the great heat. And in
order that my invention may be fully understood I append 4 sheets of illustrative
drawings wherein Fig 1 shews in vertical section in the line A, B of Fig 2 the
method of lining an ordinary Siemen's steel melting furnace according to my
invention and Fig 2 is a sectional plan of the same in the line C, D of Fig 1,
Figs 3 and 4 are transverse sections in the line E. F of Fig 1. and in the line G. H
of Fig 2 respectively. A¹. A¹. are dressed lumps or blocks of chromate of iron
(chrome iron ore) the sides of which are made to fit each other fairly well to form
a highly resistent lining as already mentioned.
The interstices between the blocks are filled up with suitable binding material
such as tar or pitch with calcined magnesian limestone, or, when the presence of
silica is not very objectionable, as in the case of a Siemen's furnace, fire-clay may
be used for the purpose.
B¹ is the bed of the furnace. It is made of fine sand
deposited on the brick bed C¹ as is now usually done or the bed may be lined or
covered with chromate of iron in dressed masses, applied as is shown on other parts
of the furnace.
In Figs 5 and 6 which are respectively a vertical section and a plan or top view,
partly in horizontal section, of an ordinary Bessemer steel ladle, A' is the lining
formed of dressed blocks of chromate of iron (chrome iron ore) according to
my invention. The same kind of lining may with advantage be used for the
bottom B¹.
The living of furnaces vessels and passages according to my invention may
consist of two main portions an inner and an outer one, the inner portion of the
lining being of chromate of iron (chrome iron ore) in either of the forms herein-
above mentioned, whilst the outer portion of the lining may be formed of fire
brick or ganister.
By the just described formation of compound lining, an economy is obtained in
the use of the more expensive and denser material.
It is to be noted that in the specification of former Letters Patent granted to me
under date the 29th day of November 1883 N° 5568 I have described and claimed
the use of chromate of iron (chrome ore) as a lining in converters used in the
manufacture of Bessemer metal and that therefore I do not claim that application
of the chromate of iron (chrome iron ore) as forming a part of my present
invention.

page_text: 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:
In furnaces, vessels, (other than Bessemer converters) and passages intended to
bear intense heat, the use of chromate of iron (chrome iron ore) substantially in
the manner described to form a highly resistent lining as above set forth.
DOLL
1004
HENRY D. POCHIN,
W. Lloyd Wise,
46, Lincoln's Inn Fields,
Applicant's Agent.