Improvements in Annular Kilns fór Burning Bricks and the like.
Year: 1899

page_text: Date of Application, 1st Mar., 1899-Accepted, 1st Apr., 1899
COMPLETE SPECIFICATION.
Improvements in Annular Kilns fór Burning Bricks and the like.
We, IGNATZ BAUMANN and MICHAEL BAUMANN, both of 27, Ludwigsstrasse,
Altriss, (Pfalz) Germany, Brick Manufacturers, do hereby declare the nature
of this invention and in what manner the same is to be performed to be particu-
larly described and ascertained in and by the following statement: —
Our said invention relates to improvements in annular kilns for burning bricks
tiles and similar articles and has for its object to enable wider kilns to be used
than is commonly the case while obviating the irregularity of action which has
hitherto attended the use of wide kilns, and at the same time conducing to
greater economy in the consumption of fuel.
If in a wide annular kiln the flues are arranged at one side in the central wall
or in the external walls the bricks are always unevenly burnt. It has been
proposed to arrange the flues opposite to each other connected to a common main
Hue but this arrangement has not been found to answer since only two oppositely
placed flues can be regulated together.
In such constructions as described it is not possible to properly direct the
course of the flame in the annular kiln for the purpose of leading it as may be
required against the outer or the middle wall. Further the middle of the kiln
receives too little heat if the width is increased beyond a certain limit.
For the purpose of greater production and in order to better utilise the heat
it is desirable to construct kilns with wide chambers which present in every
respect great advantages.
According to our said invention we enable this increased breadth of chamber
to be obtained (without the drawbacks which have hitherto attended wide
chambers) by the use of a new arrangement and disposal of the flues as shown
in the drawing accompanying this specification in which Fig. 1 is a transverse
section and Fig. 2 is a sectional plan of part of an annular kiln.
Besides the branch flues which are disposed in the central wall and which
communicate with the common main flue 6 leading into the main draught of
the chimney we provide also in the outer walls separate branch flues c. These
latter are however not directly connected to the branch flues a of the middle
wall nor are they placed opposite to them but are connected to a separate main
flue also opening into the main draught of the chimney. Each of the branch
flues a and c of the middle and outer walls is provided with a damper or the
like means for its separate control.
By this arrangement it is possible to make the chambers of the kiln much
wider than has hitherto been practicable and thus to burn greater quantities with
increased economy in the consumption of fuel. Owing to the branch flues a
and being set alternately with each other and each one being under control
the heat may be distributed and regulated as desired and thus absolute uni-
formity in the burnt product is obtainable.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that
what we claim is:-
An annular kiln having a central wall provided with a main flue and branch
flues a and an outer wall provided with a main flue having branch flues c
arranged in such a manner as not to come opposite to the branch flues a of the
central wall each of the branch flues having its own means of control for the
purpose of more uniformly and effectively utilising the heat when wide chambers
are used substantially as set forth and shown.
1000
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicants.