An Improved Process for the Preparation of a Material for Filling up Holes in Building Operations.
Year: 1891

page_text: COMPLETE SPECIFICATION.
An Improved Process for the Preparation of a Material for Filling up
Holes in Building Operations.
A communication to me from abroad by JOHANN CHRISTIAN WINKLER, of
Plauen, in the Empire of Germany, Master Mason.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex, 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 and accompanying drawing, that is to say :—
To fill up the holes occurring in the course of house building, various materials
such as coal, clinkers, or cinders, factory or slag or dross, gravel and sand have
been heretofore employed, but they do not thoroughly fulfil their object inasmuch
as they give rise to the formation in the buildings of a fungoid growth which
destroys everything in the course of time and even poisons the air. Now the
present invention has for its object the prevention of such an occurrence and refers
accordingly to a novel method of burning clay or mud in a circular oven whereby a
mass or material is produced which is particularly suitable for filling up these gaps
or holes.
In the accompanying drawing,
Figures 1 and 2 are respectively a front view and cross section of a circular oven
or brick kiln specially arranged for the desired purpose.
Figure 3 is a cross section of the channel or chamber formed in the kiln or
oven.
The clay loam or mud which has to be prepared to form a filling material for gaps
or holes is first pressed through a wire sieve or fabric arranged in a brick press,
then dried and burned, or the material may be dug out, pounded and sifted and then
dried and burnt.
The dried mass is subsequently placed in the circular oven being thrown in
successive portions into the incandescent chimney A. It should be subjected for at
least 6 hours to a white heat before being withdrawn from the door B below.
Fresh material should not be introduced at the top whilst the burnt stuff is with-
drawn at the bottom, but each channel or chamber should be successively filled,
closed, heated, and emptied.
The heating or burning of the mass can only take place in that part of the oven
where the fire is most intense, and hence the heating of the mass will proceed as
the fire increases in intensity.
The
The incandescent chimnies are built up when the unburnt bricks are being laid
in the oven.
As shewn in Figure 3 these chimnies or flues consist of a strong iron
sheet C bent up at its edges to receive an arch D built of dried stones.
position of these chimnies or flues is inclined in such a manner that after treatment
the material can be easily withdrawn while in order to facilitate the introduction of
the material the vertical part A thereof is furnished with a hopper F the opening
or mouth of the hopper being afterwards closed by means of a cap luted with
sand. The material withdrawn after treatment from the oven is stored in dry
enclosures and can be used forthwith for filling purposes by the building trade.
Having now particularly described and ascertained the nature of the said inven-
tion, and the manner in which the same is to be performed, I declare that what I
claim is:
For the production of filling material, the construction of incandescent chimnies

page_text: or flues in circular ovens into which sifted dried clay, loam, or mud is supplied at
the top, and subjected to a white heat and subsequently withdrawn at the bottom
from the inclined flue, ready for use, substantially as described and shewn.
Dated this 13th day of February 1891.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.