Improvements in or connected with Moulds for Use in the Manufacture of Secondary Battery Plates or Supports.
Year: 1896

page_text: Date of Application, 27th Feb. 18.96
Complete Specification Lelt, 18th Apr., 1896-Accepted 23rd May, 1896
Improvements in or connected with Moulds for Use in the
Manufacture of Secondary Battery Plates or Supports.
1, FRANK KING of 4 Great Winchester Street, in the City of London, Engineer,
do hereby declare the nature of my invention to be as follows:-
My invention relates to moulds for use in the manufacture of secondary battery
plates or supports and consists in an arrangement whereby the making of the said
plates or supports is more effectively and readily performed. It is very diffult
to remove the casting from the mould without damaging or twisting the casting
especially when the form which the plate or support of a secondary battery is
desired to take is such that the moull is of a complicated and deeply cut section,
and my invention has for its object to enable the cast plate or support to be readily
removed from the said mould.
I construct a mould in two parts, meeting at what is intended to be the centre of
the grid plate or support. It is found in practice that while it is easy to separate the
two parts of the mould the casting remains fast in one half. I therefore according
to my invention mount a plate in any suitable position with reference to the
plane of the mould, and in this plate I fix a number of pins which pass through the
body of one or both of the parts of the mould, so that when the molten metal is
poured into the mould it fills the spaces in the mould and also runs round and takes
the shape of the pins which are attached to the aforesaid plate.
I sometimes use two plates carrying pins, one on each side of the mould, and I
can thus operate from either or both sides.
When the casting is cooled, the two parts of the mould are separated, and it will
be found that when only one plate with pins is used, the casting adheres to that
part of the mould adjacent to that plate. The plate with pins is mounted on a
slide or its equivalent so that the pins may be withdrawn from the recesses in the
mould which are provided for their accomodation. The movement which it is
necessary to give to the plate or plates carrying the pins may be accomplished in
any desired manner, for example, by means of a screw toggle or cam. The screw
is turned, and the plate with its pins partially withdrawn from the casting and the
part of the mould. A turu is then given to the screw in the opposite direction,
which has the effect of forcing the casting forward or outwards from the recesses
in the mould, and the screw may then be again reversed, drawing the pins right
out of the casting, which is then readily removable from the mould.
Dated this 27th day of February 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.

page_text: Improvements in or connected with Moulds for Use in the
Manufacture of Secondary Battery Plates or Supports.
FRANK KING of 4 Great Winchester Street in the City of London, Engineer,
do hereby declare the nature of this invention and in wint manner the same is to
he performed to be particularly described and ascertained in and by the following
statement:-
My invention relates to moulds for use in the inanufacture of secondary battery
plates or supports and consists in an arrangement whereby the making of the said
plates or supports is more effectively and readily performed. It has hitherto been
found very difficult to remove the casting from the mould without damaging or
twisting the easting, especially when the form which the plate or support of a
secondary battery is desired to take is such, that the mould is of a complicated and
deeply ent section and my invention has for its object to enable the cast plate or
support to he readily removed from the said mould.
It is found in practice when grid plates or supports are moulded in two part
moulds that while it is easy to separate the two parts of the mould, the casting
remains fast in one part. I therefore according to my invention mount a plate in
any suitable position with reference to the plane of the mould and to this plate !
fix a number of pins or rods which pass through holes of corresponding size and
shape in the body of one or both of the parts of the mould, so that when the molten
metal is poured into the mould, it fills the spaces in the mould and also runs round
nud takes the shape of the pins which are attached to the aforesaid plate.
1 sometimes nse two plates carrying pins or rods one on each side of the mould,
and I can thus operate from either or both sides.
When the casting is cooled, the two parts of the mould are separated, and it
will be found that when only one plate with pins is used, the casting adheres to
that part of the mould adjacent to that plate. The plate with pins is mounted on
a slide or its equivalent so that the pins may be withdrawn from the holes or
recesses in the mould. The movement which it is necessary to give to the plate or
plates carrying the pins may be accomplised in any desired manner for example by
means of screws, toggles, or cams. The screw is turned so as to draw back the
plate with its pins the latter being withdrawn from the casting into the stationary
part of the mould. A turn is then given to the screw in the opposite direction
which has the efleet of-forcing the casting forward or outwards from the recesses
in the mould the holes moulded in the casting by the pins being somewhat contracted
by the cooling of casting so that the resistance to pins re-entering the holes will be
such as to cause the casting to be forced out from the mould. The screw may
then be again reversed, while the casting is held so that the pins will be drawn out
of the casting which is thus readily removed from the mould.
Figure 1 of the accompanying drawings is a transverse vertical ecction of a
moulding apparatus constructed according to my invention shewing the back of the
movable part of the mould in elevation.
Figure 2 is a longitudinal sectional elevation and Figure 3 a plan of the
apparatus.
Figure 4 is an inside face view of the stationary part of the mould.
X is a strong metal frame supported on legs U to which frame is bulted brackets B
and to the latter of which the stationary part II of the mould is connected. To
the face of the stationary part 1 of the mould is secured a distance piece R the
internal shape of which corresponds to three sides of the perimeter of the plate to
be cast the fourth side being open to form a gate O through which the casting
metal is introduced. The part 1 of the mould is perforated with a number of
holes for the reception of pins or rods P carried in a plate F the said rods being

page_text: provided with nuts on heads E against which bears a plate D connected to the
plate F by screws L so as to retain the rods in position in the plate F.
The plates D and F are capable of sliding on guide rods G which connect the
part II of the mould to the bracket B, which bracket carries an internally screwed
bush or nut A in which works a screw C provided with a hand wheel Y for turning the
said screw. The inner end of the screw C has an enlargement c which engages in
a notched recess d formed on the back of the plate D so that by turning the screw
in the screwed sleeve A the plates D and F together with the pins or rods P' will
be moved inwards or outwards according to the direction in which the screw is
turned. The movable part S of the mould is provided with holes or recesses a
coinciding with the holes in the stationary part of the mould into which
holes & the pins or rods P enter when the mould is closed and the plates D and F
are moved forward. When the parts are in this position molten metal is poured
into the mould through the gate O the metal running round the pins or rods and
filling up the space between the two parts of the mould after which the movable
part of the mould is moved backwards by means of the screw T working in a nut t
carried by the frame X the inner end of which screw has an enlarged head t' which
engages in a notched recess t formed in a block attached to or formed on the back
of the part S of the mould. The said part S is supported on arms or brackets M
along which it slides in its backward and forward movements and when in its
extreme backward position it assumes the inclined position indicated by dotted lines
in Figure 2 thereby providing ample space to permit of the removal of the casting
from the mould.
When the movable part S is moved into this position the casting is still retained
in the stationary part 1 of the mould although the pins or rode P may have been
withdrawn therefrom and in order to expel the casting the pins or rods after having
been withdrawn are again moved forward by turning the screw C in the reverse
direction and as the casting in the meantime will have somewhat contracted in
cooling the friction of the pins or rods P entering the holes formed in the casting
is sufficient to force the said casting from the mould which casting can then be
removed and the mould be closed ready for the next moulding operation.
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:-
1st. In two part moulds used in the manufacture of secondary battery plates or
supports, holes or perforations in one part of the mould and pins or rods passing
into the space between the two parts of the mould so that when molten metal is
poured into the mould it fills the space in the said mould and around the pins or
rods, in combination with means for inserting, and withdrawing the pins or rods
from the space in the mould substantially as herein before described.
2nd. In two part moulds used in the manufacture of secondary battery plates or
supports pins or reds passing through holes in one part of the mould into corre-
sponding holes or recesses in the other part so that when molten metal is poured into
the mould it fills the space in the mould and surrounds the pins or rods, the said
pins or rods serving also to remove the casting from the mould, substantially as
herein before described.
3rd. The combination and arrangement of parts constituting the mould for
casting battery plates or supports and for removing the castings from the mould
substantially as hereinbefore described and illustrated by the accompanying
drawings.
Dased this 19th dox of Auril 1896
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.