Year: 1888

page_text: I, JOSEF KLEINPETER of the town of Leabersdorf in the Austrian Empire, Factory
Director, do hereby declare the nature of my said invention and in what manner.
the same is to be performed to be particularly described and ascertained in and by the
following statement :-
My invention relates to the method of connecting chilled castings and steel or
chilled casting and ingot iron in general for manufacturing castings with only an
excessively hard surface as requisite for railroad constructions, for instance, for
crossings, frogs and the like, but more especially for the manufacture of armour plates
so-called, compound armour plates.
The connection between the two metals is effected either direct during the operation
of casting or by employing partitions of sheet metal or net or trellis work between the
kinds of metal employed.
When partitions of perforated or plain sheet metal are used for subdividing the
mould, the same can be of such form or be provided with such devices that the said
partition acts direct for connecting the two or more metals or serves to support the
connecting devices.
According to a modification of my improved process simple partitions can be used
or be entirely omitted so that a kind of direct welding of the metals takes place.
In order to carry my invention into effect the partition w is placed in the mould in
suitable position (Fig. 1) and the molten metals poured into the so formed spaces H
and F. If the metals are of nearly equal consistency the same can simultaneously he
poured into the mould, but, however, in such proportion that the metals notwith-
standing the difference in size of the spaces in the mould will be kept on the same
level and rise simultaneously.
Figure 1 is a top view of the mould in which a partition w is employed, said
.

page_text: partition being folded in dovetail form d d in order to securely connect the
metals H and F.
•
Cis the chill mould for producing the chilled layer h of the chilled casting H; the
space. F is either filled out with steel or ingot iron. According to the quality of the
ingot iron and the carbon contained in the same the product can be correctly
denominated "Chilled casting-steel-compound or "chilled casting-ingot iron-
compound " and I wish both compounds to be understood under the name of
Kleinpeter-Compound."
"
The grapplings d of the partition need not necessarily be of dovetail form
although I consider this as most appropriate, but the said partition we can, as aforesaid,
be used for carrying grappling devices, various forms of which are represented in
Figure 2.
a is a bent ring carried by the partition w, is a dovetailed bolt, an upset bolt,
e a split bolt, a clamp, an undercut disc, two such discs, all secured to the
partition wall .
In order to secure a perfectly successful casting it is indispensable that the
partition wand the parts used in conjunction therewith be rendered as clear as
possible from oxide by scouring or coating the same with a layer of metal not
subject to oxidation, preferably in galvanic manner. Castings with curved surfaces
(for instance, armoured cupolas) are made in precisely the same manner. For
large castings made according to my improved process, partition walls made of
several pieces connected together by rivetting or in other suitable manner can be,
employed, (Fig. 4).
Care must, however, be taken that the space F is not charged before the space H
has been partially filled. For very large castings it is preferable to make the same
in parts and to connect these said parts together substantially as represented in
Figure 5.
As previously mentioned the partition can be employed without grapplings,
which arrangement is of advantage in such case where the metals gear with each
other, for instance, with certain forms of armour plates. On the other hand it is
sometimes important that the partition w is not employed which is the case when
the various kinds of metal are not poured into the mould at one and the same time or
the application of the partition is not practicable or would make the cost of manufacture
too high. In such cases the layer of chilled metal H is first cast (Fig. 6) and when
the same is half congealed the other metal F poured in above the same so that a kind
of welding ensues between the metals.
If castings with curved surface are to be made on my system I employ a closed chill
mould made of two or more pieces (Fig. 7) the upper part 0 of which is rapidly
removed as soon as the metal for the chilled casting is poured in and as rapidly
replaced by another part O' which contains the space for the other metal which
is now poured in.
The layer of chilled metal becomes very much harder and the connection between
the two metals is not less secure than the castings made with flat surfaces.
By employing the aforedescribed process hardly any consideration need be taken of
the varying coefficients of expansion of the metals used and the casting is effected
with a readiness and certainty hitherto unknown.
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 :-
:―
Kleinpeter compound castings, id est, chilled casting-steel or chilled casting-ingot-
iron-compound.
1. Manufactured by almost simultaneously pouring the various kinds of molten
metal into a mould subdivided by partitions w substantially as and for the purpose set
forth in the foregoing specification and shown in the accompanying drawings.
2. Manufactured by pouring the metal for the layer of chilled casting into the
mould without the partition and subsequently pouring in the other kinds of metal

page_text: above the glowing layer of chilled casting, substantially as and for the purpose set
forth in the foregoing specification and shown in the accompanying drawings.
3. The use and construction of the partitions w with or without grappling devices
substantially as and for the purpose set forth in the foregoing specification and shown
in the accompanying drawings.
4. In manufacturing chilled castings as described in claim 2 the use of closed chill
moulds made of two or more parts, substantially as described in the foregoing speci-
cation and shown in the accompanying drawings.