Improvements in and relating to Moulds for Casting Electrodes.
Year: 1898

page_text: Date of Application, 12th July, 1898
Complete Specification Loft 12th Anr 1800 Accented 10th huhu 1000
PROVISIONAL SPECIFICATION.
Improvements in and relating to Moulds for Casting Electrodes.
I, EDUARD FRANKE, trading as Maschinenfabrik E. Franke, of Schiffbauerdamm
33, Berlin, in the Empire of Germany, Manufacturer, do hereby declare the nature
of this invention to be as follows:-
This invention relates to an apparatus for casting the gratings of accumulators
or the like which have a solid core provided with thin plates, discs or ribs.
In the drawings Figure 1 is an elevation showing a machine with a casting
mould inserted therein, the left part of the machine being shewn in elevation
whilst the right hand part is shewn in section.
Figure 2 is a rear side view of the machine.
Figure 3 is a section shewing the arrangement of the laminae or plates with
the connecting pieces, and Figure 4 is an elevation of the same arrangement.
Figure 5 shews a moveable laminae or plate.
Figure 6 shews a small casting mould.
Figure 7 is a cross section, and Figure 8 is a portion of the longitudinal section,
Figure 9 shews the plates of which the casting mould is composed and
Figure 10 is a longitudinal and side elevation shewing a piece of electrode
which has been cast in the machine.
Upon the framing a of the machine there are arranged as shown in Figure 1,
the two parts b and c of the machine or mould, of which the part b is fixed, whilst
the mould part e is moveable. The movement is effected by means of a tooth-rack
bar d and toothed wheel c which are operated by means of the crank handle f.
Into the halves of the mould b and c there are let the frames g into which the
plates h and which constitute the mould are inserted. The plates i and h have
the outlines or contours of the casting to be produced.
Figure 4 shows a plate suitable for producing a zig-zag shaped core plate.
The straight surface of the plate h forms the straight outlines or contours of
the ribs. The plates h are fixed at their lower end or foot k; they are provided
with elongated or longitudinal slots n of double width so that they can be slipped
over the transverse fillets o and are yet capable of executing an up and down
vertical movement.
The plates are fixed in the frames and are connected together by means of
the longitudinal bars 2. As required by the form of the grating to be cast, the
said plates are provided with an upwardly directed wing or rib p¹ on their rear
side and one, or more screws. These engage through the plates m and are fixed
in the framing r. For this purpose there serve attachment pipes s which project
through the plate m and serve as a support for the nuts. The plates i are fixed.
To the plate m there are attached moveable joints which embrace the eccen-
trics of the shafts w. Upon the shafts are mounted the toothed wheels
which gear with the pinion that is adapted to be rotated by means of the
crank handle y. By rotating the eccentrics, the plate m can be drawn back or
pushed forward.
-

page_text: For the purpose of casting the plates are set in such a manner that the plates
are drawn back as far as possible and are situated with their straight surface below
the zig-zag shaped upper edge of the stationary plates.
The hand mould shewn in Figures 6 to 10 serves for producing the plate portion
shewn in Figure 10. The plates B are fixed in the frame C whilst the plates A
are fixed in the frame D that is closed at its rear. The handles E are situated on
the rear walls of the last mentioned frame. The frames D D are connected with
the frames C C situated between them, by means of through bolts and spiral
springs F. On the side fillets of the frames D there are arranged moveable
fillets G which are guided in slots and which are provided with conical recesses H.
In these recesses are situated the pins which are provided on the frames C, C.
When the lead has been poured in the mould and has become hard, the mould
is raised from its table plate K and is knocked with the projecting fillets G against
any resisting object. In this way the fillets G are forced upward, and move in
consequence of the inclined recesses H the frame that is situated in front of them
so that the projecting plates or laminac effect the lifting of the casting from out
of the mould.
In Figure 6 there is provided on the table plate K a lever L on which the
bar M is pivotally mounted. This bar is situated in the centre inside of the mould
and serves to produce the hollow or cavity of the middle piece when such perfora-
tion is desired. In a similar manner by means of the described arrangement of
the laminae, any described shapes of electrode plates with solid core may be
produced.
Improvements in and relating to Moulds for Casting Electrodes.
I, EDUARD FRANKE, trading as Maschinenfabrik E. Franke, of Schiffbauerdamm
33, Berlin, in the Empire of Germany, Manufacturer, 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 an apparatus for casting the gratings of accumulators
or the like which have a solid core provided with thin plates, discs or ribs.
Referring to the drawings filed with the Provisional Specification and also the
additional sheet filed with the Complete Specification Figure 1 is an elevation
showing a machine with a casting mould inserted therein, the left part of the
machine being shown in elevation while the right hand part is shown in section.
Figure 2 is a rear side view of the machine.
Figure 3 is a section showing the arrangement of the laminae or plates with
the connecting pieces, and Figure 4 is an elevation of the same arrangement.
Figure 4 is a perspective view corresponding to Figures 3 and 4.
Figure 5 shows a moveable lamina or plate.
Figure 6 shows a small casting mould.
Figure 7 is a cross section, and Figure 8 is a portion of the longitudinal section.
Figure 9 shows the plates of which the casting mould is composed and
Figure 10 is a longitudinal and side elevation showing a piece of electrode which
has been cast in the machine.
Upon the framing a of the machine there are arranged as shown in Figure 1,
the two parts b and c of the machine or mould, of which the part b is fixed, whilst

page_text: the mould part c is moveable. The movement is effected by means of a tooth rack
bar d and toothed wheel e which are operated by means of the crank handle f.
Into the halves of the mould b and c there are let the frames g into which the
plates h and i which constitute the mould are inserted.
The plates and have the outlines or contours of the casting to be produced.
Figure 5 shows a plate suitable for producing a zig-zag shaped core plate.
The straight surface of the plate forms the straight outlines or contours of
the ribs. The plates are fixed at their lower end or foot ; they are provided
with elongated or longitudinal slots n of double width so that they can be slipped
over the transverse fillets and are yet capable of executing an up and down
vertical movement (see Figures 23 and 4).
The plates are fixed in the frames and are connected together by means of
the longitudinal bars p. They have the zig-zag shaped outline of the ribs of
the core.
As required by the form of the grating to be cast, the said bars pare
provided with an upwardly directed wing or rib and one or more screws -
These engage through the plates m and are fixed in the framing r. For this
purpose there serve attachment pipes s which project through the plate m and
serve as a support for the nuts of the bolts which thereby secure the bars
to the rigid plate m. The plates are fixed. To the plate m there are attached
moveable joints which embrace the eccentrics of the shafts w. Upon
the shafts are mounted the toothed wheels zz which gear with the pinion a that
is adapted to be rotated by means of the crank handle y. By rotating the eccen-
tries, the plate m can be drawn back or pushed forward.
i
For the purpose of casting the plates are set in such a manner that the plates h
are drawn back as far as possible and are situated with their straight surface below
the zig-zag shaped upper edge of the stationary plates.
The hand mould shown in Figures 6 to 10 serves for producing the plate
portion shown in Figure 10. The plates B are fixed in the frame whilst the
plates A are fixed in the frame 1 that is closed at its rear. The handles E are
situated on the rear walls of the last mentioned frame. The frames D D are
connected with the frames C C situated between them, by means of through bolts
and spiral springs F. On the side fillets of the frames 1) there are arranged
moveable fillets G which are guided in slots and which are provided with conical
recesses H. In these recesses are situated the pius J which are provided on the
frames C, C.
When the lead has been poured in the mould and has become hard, the mould
is raised from its table plate K and is knocked with the projecting fillets & against
any resisting object. In this way the fillets & are forced upward, and move in
consequence of the inclined recesses H the frame that is situated in front of them
so that the projecting plates or laminae effect the lifting of the casting from out
of the mould.
In Figure there is provided on the table plate K a layer L on which the
bar M is pivotally mounted. This bar is situated in the centre inside of the mould
and serves to produce the hollow or cavity of the middle piece when such perfora-
tion is desired. In a similar manner by means of the described arrangement of
the laminae, any described shapes of electrode plates with solid core may be
produced.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. A casting mould for making electrodes (which electrodes have a solid core
studded with thin ribs, discs or the like) characterised by the fact that the casting
mould is composed or put together of thin metal plates whose upper edges
correspond with the contours or outlines of the electrodes.
2. In the casting mould specified in Claim 1, the arrangement of the laminae
or metal plates in such a manner that one part is inserted or set in a moveable

page_text: frame m whilst the other part is set in a fixed or stationary frame so that the
former part can be pushed to and fro together with the frame m substantially as
described.
3. In the casting mould specified in Claim 1, the fixing of the laminae in such
a manner that the laminae are strung upon longitudinal bars o, are caught by
the longitudinal fillets p, and are fixed by means of their bolts q, substantially
as described.
4. In the casting mould specified in Claim 1, an apparatus for moving the
frame m, consisting of the tooth wheels, the shaft w upon which the eccentric v
are mounted, which are connected with the moveable joints of the frame m,
whilst the pinion effects the driving movement thereof, substantially as described.
5. In combination with the casting mould specified in Claim 1, the laminae h
characterised by the fact that longitudinal slots of double width are provided
therein, through which the longitudinal bars o pass, which serve also as a guide
for the laminae in their movements substantially as described.
.
6. A form of construction of the casting mould specified in Claim 1, in which
the movement of the frames of laminae is produced by means of longitudinal
bars G, by forcing the pins H out of the recesses, substantially as described.
Dated this 14th day of April 1999.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.