Improvements in the Construction or Encasing of Brick Kilns and other Kilns.
Year: 1894

page_text: Date of Application, 5th Apr., 1894
Complete Specification Left, 5th Jan., 1895-Accepted, 9th Feb., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Construction or Encasing of Brick Kilns and
other Kilns.
I JAMES RAILTON Junior of 2 Great George Street, and 138 Palace Chambers
Westminster, London, Civil Engineer do hereby declare the nature of this invention
to be as follows:-
My invention consists in certain improvements in the construction or encasing of
brick kilns and other kilns used in the manufacture of any class of clay goods
or pottery ware or in lime burning or calcining purposes in general.
These improvements consist in encasing the kilns with metal sheets or plates with
the object of providing a chamber which shall at all times have absolute freedom
from any interstices or porosity otherwise arising from contraction and expansion
during working.
The invention thereby increases the efficiency and the economical working of a
kiln as compared with those now employed having the brickwork or masonry of the
structure exposed, and also affords means whereby the brickwork or masonry may
be materially reduced, as well as facilitating the work of repairing the perishable
parts when required.
To attain the above advantages I construct an iron casing preferably of
wrought iron plates of suitable thickness such plates being formed to take the
external shape of the kiln employed either up to the level of the springing of the
dome or covering the dome as well.
For example, in the case of circular built kilns, parallel plates are bent for
building the casing to the springing of the dome, the dome being formed with
segmental plates pressed or hammered to the required shape, bolts or rivets,
preferably the latter, being used for connecting the seams, overlaps or flanges.
Suitable openings are provided for the furnaces whether above or below, also
for sight or test holes and for the wicket of the kiln, and where the kilns are
otherwise fired, proper openings are to be provided accordingly.
While I prefer to arrange the casing to cover the brickwork completely, from
the floor line upwards, still where circumstances require a modified arrangement,
such as in cases where the brickwork or masonry forming the walls of a kiln
consists of more than one thickness and consequently externally stepped, the casing
may be arranged to cover a portion of such kiln, and where preferred the dome
only may be so encased, or the dome or roof and any convenient distance downwards
of the vertical walls may be encased, without necessarily continuing the casing to
the ground.
The material I prefer to employ is wrought iron in the form of plates but cast
iron may be used instead or the kiln may be encased with a combination of both
wrought and cast iron.
Dated this 5th dor of A nril 1804
R. HADDAN,
Agent to Applicant.

page_text: Improvements in the Construction or Encasing of Brick Kilns and
other Kilns.
I JAMES RAILTON, of 2 Great George Street and 138 Palace Chambers,
Westminster, London, Civil 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 consists in certain improvements in the construction or encasing of
brick kilos and other kilns used in the manufacture of any class of clay goods or
pottery ware or for lime burning or calcining purposes in general.
These improvements consist in encasing the kilns with metal sheets or plates
with the object of providing a chamber which shall at all times have absolute
freedom from any interstices or porosity otherwise arising from contraction and
expansion during working.
The invention thereby increases the efficiency and the economical working of a
kiln as compared with those now employed having the brickwork or masonry of the
structure exposed, and also affords means whereby in building the kiln the amount
of the brickwork or masonry may be materially reduced and facilitates the work of
repairing the perishable parts when required.
To attain the above advantages, I construct an iron casing preferably of wrought
iron plates of suitable thickness such plates being formed to take the external shape
of the kiln employed, either up to the level of the springing of the dome or covering
the dome as well.
For example, in the case of circular built kilns, parallel plates are bent for
building the casing to the springing of the done, the dome being formed with
segmental plates pressed or hammered to the required shape, bolts or rivets,
preferably the latter, being used for connecting the seams, overlaps or flanges.
Suitable openings are provided for the furnaces whether above or below, also
for sight or test holes and for the wicket of the kiln, and where the kilns are
otherwise fired, proper openings are to be provided accordingly.
While I prefer to arrange the casing to cover the brickwork completely from the
floor line upwards, still where circumstances require, a modified arrangement, such
as in cases where the brickwork or masonry forming the walls of a kiln consists of
more than one thickness and consequently externally stepped, the casing may be
arranged to cover a portion of such kiln, and where preferred the dome only may
be so encased, or the dome or roof and any convenient distance downwards of the
vertical walls may be encased without necessarily continuing the casing to
the ground.
The material I prefer to employ is wrought iron in the form of plates but cast
iron may be used instead or the kilu may be encased with a combination of both
wrought and cast iron.
The annexed drawing illustrates casings for three kilns partly in elevation and
partly in section.
Fig. 1 shows a casing adapted to a kiln where the fire enters at the crown.
Fig. 2 shows a casing for a kiln with side furnaces at the ground level with down
draught and closed dome.
Fig. 3 shows a casing with side furnaces at the ground level, up draught and
chimney which latter is also encased and may be provided with a damper for
regulating the draught.
A represents the casing. B the brickwork of the kiln, the latter being shown in
dotted lines. The lower part of the brickwork marked C in Figs. 2 and 3 may be
encased also if desired. The door or wicket of the kiln and any other openings

page_text: may, where desirable, be provided with hinged or sliding doors in connection with
and to complete the encasement of the kiln.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The construction of brick kilns and other pottery and similar kilns with a metal
encasement for the brickwork or masonry thereof, substantially as herein
set forth.
Dated thin 5th Ja
1005
ww
R. HADDAN,
Of the Firm of Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agent to Applicant.