Blocks or Bricks for Hot-blast and similar Apparatus.
Year: 1896

page_text: Date of Application, 17th Apr., 1896-Accepted, 6th June, 1896
COMPLETE SPECIFICATION.
Blocks or Bricks for Hot-blast and similar Apparatus.
I, CARL ADOLF BRACKELSBERG of Steele in the Empire of Germany, 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:-
The object of the present invention is a Twyer-stone for hot-blast and similar
apparatuses, which owing to its shape will give solidity in joining together the
channels as they are used in hot-blast ovens.
In the accompanying drawings,
Fig. 1 represents a perspective view of a stone and the manner of joining on an.
enlarged scale;
Fig. 2 shews the top-view of a Cowper-hot blast apparatus the left half of which
is constructed with my improved stone, whereas the right half of the drawing shews
the stone hitherto used;
Fig. 3 represents a section taken on the line A-B through Fig. 2.
In the existing Cowper-apparatus the channels consist of six-sided stones. Pipe
stands upon pipe as is shewn in the right hand half of Fig. 2 and no binding is
provided. The new fundamental shape of the stones, used in the stone hot-blast
oven (Cowper-apparatus) is triangular, having the necessary boring for the several
channels. In order to provide a good union so that the perpendicular joints of two
layers may not meet one another, the corners (o, p, 2) are made to correspond with
the channels, and thus the shape of the stones, as shewn in Fig. 1 is obtained with
round channels.
By setting the stones (abcdef) in position as shewn in the left half of Fig. 2.
the channel (g) is constituted, as well as parts of the channels (h, i) and so on. In the
next layer, the stones are so arranged, that the channel (g) is formed out of a single
stone, which covers the corners or angles of the stones (a b c d e f).
The angles of this stone will then constitute parts of the channels (b df). The
following layer will be put down in the same way, so that the channel (g) will
likewise be formed by a single stone, the corners of which form also parts of the
channels (a, c, e); the next course is similar to the first. In this way a close union
or connexion is formed, as shewn in Fig. 3 by the thick line (m, n).
Besides this triangular foundation form, as shewu in the accompanying drawing,
a close union is also obtained by giving a quadrangular shape to the stones and
breaking off the angles corresponding to the channel to be formed so that squares
are to be cut out.
Instead of the round boring as represented in the drawing the channels may be
made of any other desired formn.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
A Twyer-stone for hot-blast and similar apparatuses, distinguished by the fact

page_text: that the angles formed to correspond with the boring will lap over the adjoining
stones with the turning of the stones on its longitudinal axis and form continuations
of the boring of the said adjoining stones.
Dad: 101
Ր
11000
L. DUVINAGE,
Agent for Applicant.