Year: 1888

page_text: Date of Application, 12th Mar., 1888
Specification Accepted, 5th Oct., 1888
I ALEXANDER LESLIE of 52 Lime Street in the City of London, Merchant, 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:-
This invention relates more particularly to small cupolas or furnaces for melting
metal, in which some difficulty is experienced in properly relining and otherwise
repairing the cupola, and the invention consists in a novel mode of constructing such
cupolas or furnaces whereby these difficulties are overcome.
To this end the cupola is formed in two separate parts so arranged that they may be
shifted the one clear of the other.
In the accompanying drawing,
Fig. 1 Sheet I is an elevation, partly in section, of a cupola or furnace constructed
according to this invention, and
Fig. 2 is an elevation, partly in section, taken at right angles to Fig. 1.
Figs. 3 and 4 Sheet II show slight modifications in the manner of connecting the
two parts together.
The cupola or furnace consists of two separate parts A A'; the lower part A is
constructed in the usual manner with drop or rake out bottom, tap hole, and blast
tuyere, and is set up on a suitable foundation.
The upper part A is also constructed in the usual manner, but is carried by a
carriage B, which runs on a pair of rails C C supported on columns D D¹.
These rails rest in chairs CC carried by the columns D D', and their outer ends
are connected together by bolts, which also pass through the chairs, thus forming a
rectangular framework. The chairs Care fixed to the columns D, but the chairs C²
are provided on their under side with screws 03³, which take into nuts Cresting on
the top of the columns D'.

page_text: These screws are termed lifting screws, and by turning the nuts, the front end of
the framework CC is raised. The effect of this is to raise the upper part A¹ away
from the lower part A, so that it can be shifted to one side for the purpose of repairs
or relining the cupola or furnace.
It will be evident also that the upper part may be the fixed portion, the lower part
being moveable; or the upper part may be hinged or centred in such a manner that
it can be separated from the lower part for examination, repairs, and lining up to suit
the quantity of the metal to be run.
In Fig. 3, Sheet H, a mode of hingeing the upper part of the cupola to the lower
part is shown; thus the upper portion A of the cupola is hinged at A2 to the bottom
portion A. Tackle, or any suitable appliance, is used to pull over, and thus separate
the upper from the lower portion.
Fig. 4 is another slight modification. In this case, the upper portion of the cupola
is carried upon trunnions A³ working in bearings A carried upon girders E or other
suitable support. The cupola is divided at an angle as shown at F, so that when the
upper portion is pulled over by tackle or other suitable appliance, the upper part will
bo separated from the lower portion in such a manner as to give plenty of room for
repairing.
By this novel construction of cupola or furnace, the lining of the parts can be
properly repaired without the least difficulty, to suit the work in hand, thereby
effecting economy in fuel, and prolonging the period during which the furnace can
be worked, without relining, in other words, prolonging the life of the lining. The
joint between the two parts will be made by Tuting in the well known manner.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what I claim is :-
1. Constructing cupolas or furnaces in two parts, which are capable of being
separated, as and for the purpose set forth.
2. The means substantially as described for raising and laterally shifting the upper
part of a cupola or furnace, as and for the purpose set forth.
3. A cupola or furnace and its accessories, constructed and arranged substantially
as herein shewn and described.
4. A cupola or furnace made in two parts, hinged or otherwise jointed together, as
and for the purpose set forth.
Dated this 10th day of March 1888.
NEWTON & SON,
Agents for the Applicant.