Improvements in Kilns, such Kilns being Applicable for Bending Glass, Firing Stained Glass, Tiles, Pottery Ware, and for other Purposes.
Year: 1886

page_text: Improvements in Kilns, such Kilns being Applicable for Bending
Glass, Firing Stained Glass, Tiles, Pottery Ware, and for
other Purposes.
I GEORGE LAZENBY of Leeds Bridge, Leeds in the County of York, Plumber do
hereby declare the nature of this invention to be as follows:-
The object of my invention is to construct a kiln in such a manner that the
interior thereof is always free from products of combustion arising from the gas
flame I employ for imparting the required heat to the same, and this I have found
in practice necessary when the kiln is used for the purpose of bending glass, firing
stained glass, tiles and pottery ware.
The kiln is provided with a wrought iron inner case having an outer shell of
brick work. A space is provided between the vertical sides and roof of the wrought
iron case and the outer shell, such space being employed as a combustion or heating
chamber. Gas is supplied within this chamber through atmospheric burners, or
burners in combination with a mechanical blast.
On the gas being lighted a high temperature is produced in the combustion
chamber, whereby the wrought iron inner case is brought to a sufficient heat to
produce the desired effect upon the material placed within it to be operated upon.
The products of combustion are carried away through ordinary flues from the
combustion or heating chamber without coming in contact with the glass or other
material being operated upon, consequently the bad effects of contact with the
products of combustion are prevented.

page_text: In the upper part of the brickwork or outer shell b, g, h and i are the vertical
flues which conduct the products of combustion from the combustion chamber c
into the main flue j, afterwards passing from such main flue ; in the ordinary
manner.
The vertical flues g, h and i are provided with dampers to regulate the
draught.
On the gas being lighted a high temperature is produced in the combustion
chamber c whereby the wrought iron inner case a is brought to a sufficient heat to
produce the desired effect upon the material placed within it.
The carriage on which the material is placed is shewn in the drawings at 7 and
is of ordinary construction.
The door is shewn at m in the drawings covering the entire front of the opening
into and under the inner iron case a.
This door m is hinged at the side in the usual way and may be secured in
position when closed by any ordinary means, but when the lower part n of the
interior is used for annealing or tempering purposes after the firing or bending
operation, two doors may be used, one covering the front of the iron case in
which the bending and firing takes place, and the other the lower part n where
the annealing or tempering process takes place, so that one may be opened
independently of the other.
When the above described construction of kiln and annealing chamber is
employed, panes of glass may be taken out and others put in continuously
without the kiln being allowed to cool.
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 general arrangement and application of the wrought iron inner case a in
combination with the arrangement of combustion chamber c and outer shell b,
and the means employed for imparting the required heat for bending glass, firing
stained glass, tiles, pottery ware and for other purposes, substantially as herein
set forth.