IMPROVEMENTS IN MOULDING AND IN APPARATUS THEREFOR
Year: 1879

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for the Invention of "IMPROVEMENTS IN MOULDING AND
IN APPARATUS THEREFOR." A communication from abroad by Jacob Jäger,
of Elberfeld, in the Empire of Germany.
PROVISIONAL SPECIFICATION filed by the said Herbert John Haddan at.
the Office of the Commissioners of Patents on the 25th February 1879.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVEMENTS
IN MOULDING AND IN APPARATUS THEREFOR." A communication from abroad by
Jacob Jäger, of Elberfeld, in the Empire of Germany."
The Invention relates more particularly to the manner of moulding axle-boxes of
railway-carriages, and consists in making the cores by means of machinery in the
following manner :-The shape of the core is moulded into a box consisting of a
single piece and having one or more bottoms laid in. Upon this box a form chest
is screwed to which the said bottoms are subsequently secured by means of bolts;
and, finally, both boxes are rammed full with moulding sand. If now the upper
box is removed from the lower one the false bottoms of the latter go with the former
and take the moulding sand with them, after which it is only necessary to take
away the false bottoms to have the core finished. If the axle-box is provided with
a horizontal partition this manner of producing the core applies only to that part
which lies before the partition, while for the remainder a special core is made
having an iron cross rammed into it consisting of several iron bars, of which the
middle one serves for fixing this core to the main core.
j

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Herbert John Haddan in the Great Seal Patent Office on the 16th
August 1879.
"
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. IMPROVE
MENTS IN MOULDING AND IN APPARATUS THEREFOR. A communication from
abroad by Jacob Jäger, of Elberfeld, in the Empire of Germany.
The Invention relates more particularly to the manner of moulding axle-boxes of
railway-carriages, and consists in making the cores by means of special apparatus or
machinery in the following manner:-The shape of the core is moulded into a box
consisting of a single piece and having one or more bottoms laid in. Upon this box
a form cliest is screwed, to which the said bottoms are subsequently secured by
means of bolts; and finally, both boxes are rammed full with moulding sand. If
now the upper box is removed from the lower one the false bottoins of the latter go
with the former and take the moulding-sand with them, after which it is only
necessary to take away the false bottoms to have the core finished. If the axle box
is provided with a horizontal partition this manner of producing the core applies
only to that part which lies before the partition, while for the remainder a special
core is made having an iron cross or frame stamped into it, consisting of several iron
bars, of which one (the middle one) or more serve for fixing this core to the main
core. In the accompanying Drawings Figures 1 and 2 are elevations, and Figure 3a
plan of an apparatus embodying the Invention; Figures 4, 5, 6, and 7, detail views;
C is the box into which the core is moulded, and which is provided with a bottom a.
C is supported by two bearings B of the moulding machine, in which it can be
turned by means of the handwheel D. Upon the box C is bolted a form chest I,
and the falso bottom (or bottoms) a connected with the upper part of the said form
chest by means of thin rods b with pins or cottars. Subsequently the form chest I
and the mould in the box C are rammed full with sand, the box C is turned round
BO as to have the moulding box at the bottom, and the table of the moulding
machine is screwed up, after which the bolts attaching the form chest I to the box C
are loosened. In lowering the table the core with the bottoms or partitions & go
with it, so as to be drawn out of the mould or box C; the bottoms a are then
removed, after which the core is ready on the form chest. Figures 6 and 7 show a
cross, to be used if the axle-box is provided with a horizontal partition. The
central bar serves to attach the core to the form chest I by means of a pin or cottar,
so as to avoid the application of the usual core-nails or supports.
CLAIMS.
1. The mode of producing the cores of axle-boxes for railway carriages (or of
other castings) stamped ready on the form chest (I) by drawing out the moulding-
sand from the core box (C) by means of false bottoms or partitions (a) and machinery,
substantially as described and illustrated. 2. The devices for making the cores of
axle-boxes, substantially as described and illustrated. 3. The attachment of the
special core upon the main core by means of a cross, substantially as illustrated in
Figures 6 and 7