Improvements in Moulding Boxes for the Manufacture of Tubular Articles.
Year: 1898

page_text: [Communicated from abroad by FERDINAND COHN and GEORG HEINRICH BENDIX
BRUNCKHORST, both of No. 45, Neuerwall, Hamburg, in the Empire of
Germany, Merchants.]
Improvements in Moulding Boxes for the Manufacture of Tubular
Articles.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in moulding boxes for the manufacture
of building materials of tubular form from a pulpy mass capable of hardening,
such for example as chimney pots.
Such an object may have its upper and lower bearing surfaces formed with
grooves running round them, such grooves being in communication by means
of casting channels formed in the wall of the pipe or chimney pot. The tubular
parts are placed one upon another in a dry condition and a thin liquid mass is
poured into the casting channels, fills the grooves and rapidly sets. In order
to still more securely unite the tubular parts one with another, iron rods may be
inserted in the casting channels which lie vertically one under the other.
Building materials of this kind may be manufactured by means of our novel
moulding box not only of square but of any desired cross-section, the outer shape
of the moulding box varying accordingly. In the present case the moulding box
will be described as an octagonal cube for the formation of a chimney-pot of
square cross-section.
Upon a bottom plate are fixed by means of hinges the side flaps which when
raised form with the bottom plate a box open at the top; the side pieces may be
fastened one to the other by means of latches and hooks.
Upon the inner faces of two opposite side flaps are arranged circular bands or
strips corresponding to the grooves which are to be formed in the bearing ends of
the tubular part. Each of these side flaps is likewise provided with a central
aperture corresponding in shape to that of the tubular passage to be formed in the
object moulded. Finally, in each of the side flaps provided with these apertures
are formed two holes.
After the side flaps have been set up against each other and against the bottom
plate and fastened one to the other, a rod is passed through each opposite pair of
holes and a core through the two central openings. This core is previously built
up of separate plates which by means of pegs and overlapping parts are (in the
present case) made to form a hollow prismatic rod. This hollow rod is then
inserted through the two openings, after which the plates of which it is built up
are firmly pressed against the sides of the central openings by means of one or
more wedges of suitable cross-section which are introduced between such plates,
TD 277

page_text: in such a manner that the hollow prismatic rod forms a casting core within the
box.
The pulpy, liquid mass, of which the object for building purposes which it is
desired to form is to consist, is now poured into the box, and until this has been
effected the upper rod is not inserted through the openings so as not to interrupt
the pouring in of the liquid mass. When the mass has penetrated the box and
has collected somewhat over the core, the upper rod is passed through the upper
holes the box filled to the brim and the upper surface of the mass smoothed off.
After the mass has set the wedge or wedges are removed from the core, this latter is
withdrawn from the central openings and the rods from the holes; the flaps are then
turned down and the finished article removed from the box in order to undergo
a special drying operation before use. The box can then be again fitted together
in the manner above described and a fresh object formed.
Dated this 17th
1000
Improvements in Moulding Boxes for the Manufacture of Tubular
Articles.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, 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:
-
This invention relates to improvements in moulding boxes for the manufacture
of hollow blocks and similar building material such for example as chimney pots,
conduit sections, and the like, from a pulpy mass capable of hardening.
In order that the invention may be more clearly understood I have shown the
same in the accompanying drawing, in which:
Figure 1 is a longitudinal section of the improved moulding box shown in its
working condition when filled with the material constituting the building block
or structure;
Figure 2 is a cross section thereof.
Figure 3 is a side elevation of the same.
Figure 4 illustrates the moulding box unfolded, all the parts being arranged
in a plane;
Figure 5 is a sectional elevation of a hollow building structure formed with the
aid of our improved moulding box,
Figure 6 is a top view of the same, and
Figures 7 and 8 are detailed views of a core employed with our moulding box.
Similar letters denote similar parts throughout the several views of the drawing.
A hollow building structure such as represented by Figure 5 and 6 and serving
as chimney pot may have its upper and lower bearing surfaces formed with
grooves a running round them, such grooves being in communication by means
of casting channels 6 formed in the wall of the hollow building structure or
chimney pot shown. The hollow or tubular parts are placed, as usual, one upon
another in a dry condition and a thin liquid mass or mortar is poured into the
casting channels, fills the grooves a and rapidly sets. In order to still more
securely unite the tubular parts one with another, iron rods may be inserted in the
casting channels 6 which lie vertically one under the other.

page_text: Building materials of this kind may be manufactured by means of our novel
moulding box not only of square but of any desired cross-section, the outer shape
of the moulding box varying accordingly. In the present case the moulding box
will be described exemplarily as an octagonal cube for the formation of a chimney-
pot of square cross-section.
Upon a bottom plate care fixed by means of hinges c¹ the side flaps d which
when raised form with the bottom plate a box open at the top Figures 1 and 2;
the side pieces d may be fastened one to the other by means of latches and
hooks da.
Upon the inner faces of two opposite side flaps are arranged circular bands or
strips e corresponding to the grooves which are to be formed in the bearing ends of
the tubular part. Each of these side flaps is likewise provided with a central
aperture corresponding in shape to that of the tubular passage to be formed in
the object moulded. Finally, in each of the side flaps provided with these aper-
tures are formed two holes g.
After the side flaps of the moulding box have been set up against each other and
against the bottom plate and fastened one to the other, a rod g¹ is passed through
each opposite pair of holes 9 and a core through the two central openings,
Figures 1-3. This core is previously built up of several plates which by
means of pegs and overlapping parts are (in the present case) made to form
a hollow prismatic rod or core, Figures 7 and 8. This hollow core or rod is then
inserted through the two openings ff of the flaps d, after which the plates h of which
it is built up are firmly pressed against the sides of the central openings by means
of one or more wedges i of suitable cross-section which are introduced between
such plates, in such a manner that the hollow prismatic rod forms a casting core
within the box.
The pulpy, liquid mass, of which the object for building purposes which it is
desired to form is to consist, is now poured into the box, and until this has been
effected the upper rod g¹ is not inserted through the openings g g so as not to
interrupt the pouring in of the pulpy mass. When the mass has penetrated the
box and has collected somewhat over the core, the upper rod g' is passed through
the upper holes g g, the box filled to the brim and the upper surface of the mass
smoothed off. After the mass has set the wedge or wedges are removed from the
core, this latter is withdrawn from the central openings f f of the flaps d and the
rods g g from the holes gg: the flaps are then turned down and the finished
article removed from the box in order to undergo a special drying operation before
use. The box can then be again fitted together in the manner above described and
a fresh object formed.
From the foregoing it will be understood that we do not restrict ourselves to
the particular form or structure of building blocks or articles to be moulded by
means of the described moulding box, since these may vary not only in the outer
shape but also with regard to the configuration and number of channels or aper-
tures provided, without departing from the gist of my invention.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, as communicated to me by my
foreign correspondents, I declare that what I claim is:
1. A moulding box for the manufacture of hollow or tubular building articles
consisting of a bottom plate and side flaps hinged thereto, in combination with a
contractible core or cores designed to be received and supported by two opposite
side flaps, the latter being therefore provided with suitable apertures for the re-
moval of the core while the moulded article is still in the box, substantially as set
forth.
2. In combination with the herein described moulding box suitably shaped
strips or hands on the inner face of the side flaps provided with the aperture for
the reception of the core and with holes for the passage of moulding rods, sub-
stantially as and for the purpose set forth.

page_text: 3. In combination with the herein described moulding box having two opposite
side walls provided with suitable apertures, a contractible core composed of
separate plates engaging one another and one or more wedges to be introduced
between such plates, substantially as and for the purpose set forth.
Doted th: 17h day of Octahan 1802
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.