Improvements in Apparatus for Casting Pigs or Ingots.
Year: 1898

page_text: Date of Application (in United Kingdom), 6th Sept., 1898
Complete Specification Left, 26th May, 1899-Accepted, 22nd July, 1899
Improvements in Apparatus for Casting Pigs or Ingots.
I, RODERICK W. DAVIES, of Park Avenue, in the City of Warren, Ohio,
United States of America, Mechanical Engineer, do hereby declare the nature of
this invention to be as follows:
1
This invention embraces certain new and useful improvements in machines for
casting molten metal.
In the accompanying drawing one form of the invention is shown.
Fig. 1 is a plan view with some of the parts omitted. Figure 2 is a cross
sectional view on line 2-2; Figure 1. Figure 3 is an enlarged view of one of
the moulds. Figure 4 is a cross sectional view on plane 4-4, Figure 3.
Figure 5 is a similar view, showing a slight modification. Figure 6 is a view
of a second modification. Figure 7 is an enlarged detail view, showing one of
the shields or deflectors.
Referring to the drawings, A designates a circular carrier in the form of a
wheel. This is composed of I-beams a radiating from a hub a' and united
near and at their outer ends by inner and outer concentric rings a², a³. The
hub a is supported by a shaft a extended perpendicularly from a base
plate having a boxing a to accommodate said shaft. From the beams of
the carrier depend a series of hangers 6 which support the journals of wheels
or rollers which travel on a circularly-arranged rail 2 mounted on a suitable
foundation 63 Any desired means may be employed for gradually revolving the
carrier. I have indicated at W, Figure 1, a motor for rotating gear-wheel
(Figure 2) which meshes with teeth on the under side of the outer ring a³.
B designates a series of circularly-arranged moulds. Each mould is approxi-
mately rectangular shape, and is composed of a body b formed with opposite
chambers or cavities of substantially concave form, in cross-section, said
chambers extending the full length of each mould. I also form each side 66
of each mould with concave chambers similar to the chambers 5. These moulds
are mounted on carrier A, side by side. From the ends of each mould projects
a stud (or a continuous shaft may be used) said studs fitting in bearings 78
on rings 3, a³. From the outer stud of each mould project opposite lateral
arms C. As the carrier is revolved, after the upturned chambers of some of
the moulds have been supplied with molten metal, the downwardly-projecting
arm C will make contact with a stationary post D located outside of, but close
to, the line of travel of the circumferential ring a³. As the lower arm of a
mould thus makes contact with said post, the mould is given a partial or quarter
turn, the weight of the pig serving to aid in turning the mould to a like extent,
[Price S7

page_text: thus emptying the pig from the mould and causing the previously-downwardly-
faced chamber or cavity to face upward.
What has been said applies when but two diametrically opposed chambers or
cavities of a mould are employed. But when, as is preferred, each of the four
independent chambers or cavities of each mould are to successively receive the
molten metal, it is essential that, in dumping the pig therefrom, each mould
should make but a quarter turn. Hence, as shown in Figure 5, four arms d
are projected laterally from the outer stud of each mould, instead of but two
arms, as before described. Each mould is held as against accidental turning by
a spring-arm " fast at one end on the outer ring a³. The free end of each spring-
arm bears downwardly on the flattened portion of a boss d on the outer end of
each mould.
When each mould is provided with but two dumping arms, its boss has
but two flattened portions, with rounded ends. (See Figure 3.) But when
each mould is to be given but a quarter turn in dumping the pig therefrom,
and four arms are employed, each boss is formed with four flattened portions
in the form of a square. (See Figure 5). In lieu of providing the several moulds
with dumping-arms, a gear-wheel f may be made fast on the outer stud of each
mould, so as to engage with rack-teeth f¹ on the upper end of the dumping-
post. (See Figure 6). In this form the extent to which each mould is to be
turned, that is, whether it is to be given a quarter turn or half turn, depends
upon the number of rack-teeth f¹.
The molten metal is simultaneously supplied to a plurality of moulds, being
emptied therein from spouts 2 leading from ladles which are supplied with
molten metal direct from a furnace Z, by a runner having branches ³. Each
spout opens directly above the line of travel of deflectors E (some of which
are shown in Figure 1,) extended longitudinally inward over the moulds and
serving to prevent the molten metal from falling between the latter. These
deflectors consist of inverted V-bars supported at their outer ends by posts or
uprights e positioned on the circular carrier.
4
In practice, the molten metal will be deposited in the moulds as they pass
beneath the spouts of the ladles, the carrier being revolved at a rate of about
ten feet to the minute. But this speed may be varied. The pouring of the
metal is continuous until the supply is exhausted; and the rotation of the mould-
carrier is likewise continuous. As the filled moulds travel toward the point of
discharge (the carrier being moved in the direction of the arrow e) they may be
sprayed with water to aid in cooling the metal so that a solid pig will be deli-
vered at the point of discharge. As each mould reaches the latter point its
depending arm will contact with the post 1), resulting in the turning of the
mould and the dumping of the pig therefrom. When but two arms are pro-
vided for each mould, the latter is completely inverted, by the contact of an
arm with the post, aided by the weight of the pig, causing its previously lowered
side to be face upward to receive the molten metal when the mould again comes
beneath the discharge-spout of the ladles. But when it is desired to successively
use the four chambers or cavities of each mould as receivers for the molten metal, 4
the same will be given but a quarter turn and the pig will fall therefrom by its
own weight. Thus it will be seen that the metal received in the several moulds
in a molten state is discharged solidified in pigs. The undersides of the several
moulds, after the upper side has been filled, may, while the carrier is being
revolved, be sprayed with a mixture of fire-clay and lime-water, or any other 5
suitable fluid to prevent the metal from adhering thereto.
Dated this 6th dov
1000

page_text: Improvements in Apparatus for Casting Pigs or Ingots.
I, RODERICK W. DAVIES, of Park Avenue, in the City of Warren, Ohio,
United States of America, Mechanical Engineer, 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 embraces certain new and useful improvements in machines for
casting molten metal.
In the drawings left with my Provisional Specification one form of the inven-
tion is shown."
Figure 1 is a plan view with some of the parts omitted.
Figure 2 is a cross sectional view on line 2-2, Figure 1.
Figure 3 is an enlarged view of one of the moulds.
Figure 4 is a cross sectional view on plane 4-4, Figure 3.
Figure
is a similar view, showing a slight modification.
Figure 6 is a view of a second modification.
Figure is an enlarged detail view, showing one of the shields or deflectors.
Referring to the drawings, A designates a circular carrier in the form of a
wheel. This is composed of m S a radiating from a hub a' and united
near and at their outer ends by inner and outer concentric rings a², a. The
hub is supported by a shaft a extended perpendicularly from a base
plate having a boxing to accommodate said shaft. From the beams of
the carrier depend a series of hangers which support the journals of wheels
or rollers 6 which travel on a circularly-arranged rail be mounted on a suitable
foundation 63. Any desired means may be employed for gradually revolving the
carrier. I have indicated at W, Figure 1, a motor for rotating gear-wheele
(Figure 2) which meshes with teeth on the under side of the outer ring a³.
B designates a series of circularly-arranged moulds. Each mould is approxi-
mately rectangular shape, and is composed of a body formed with opposite
chambers or cavities of substantially concave form in cross section, said
chambers extending the full length of each mould. I also form each side 66
of each mould with concave chambers similar to the chambers 6. These moulds
are mounted on carrier A, side by side. From the ends of each mould projects
a stud (or a continuous shaft may be used) said studs fitting in bearings 78
on rings a, a3. From the outer stud of each mould project opposite lateral
arms C. As the carrier is revolved, after the upturned chambers of some of
the moulds have been supplied with molten metal, the downwardly-projecting
arm C will make contact with a stationary post D located outside of, but close
to, the line of travel of the circumferential ring a³. As the lower arm of a
mould thus makes contact with said post, the mould is given a partial or quarter
turn, the weight of the pig serving to aid in turning the mould to a like extent,
thus emptying the pig from the mould and causing the previously-downwardly-
faced chamber or cavity to face upward.
What has been said applies when but two diametrically opposed chambers or
cavities of a mould are employed. But when, as is preferred, each of the four
independent chambers or cavities of each mould are to successively receive the
molten metal, it is essential that, in dumping the pig therefrom, each mould
should make but quarter turn. Hence, as shown in Figure 5, four arms d
are projected laterally from the outer stud of each mould, instead of but two
arms, as before described. Each mould is held as against accidental turning by
spring-arm fast at one end on the outer ring a³. The free end of each spring-

page_text: arm bears downwardly on the flattened portion of a boss d on the outer end of
each mould. .
When each mould is provided with but two dumping arms, its boss d has
but two flattened portions, with rounded ends. (See Figure 3.) But when
each mould is to be given but a quarter turn in dumping the pig therefrom,
and four arms are employed, each boss d is formed with four flattened portions
in the form of a square. (See Figure 5). In lieu of providing the several moulds
with dumping-arms, a gear-wheelf may be made fast on the outer stud of each
mould, so as to engage with rack-teeth f¹ on the upper end of the dumping
post. (See Figure 6). In this form the extent to which each mould is to be
turned, that is, whether it is to be given a quarter turn or half turn, depends
upon the number of rack-teeth f¹.
The molten metal is simultaneously supplied to a plurality of moulds, being
emptied therein from spouts & leading from ladles which are supplied with
molten metal direct from a furnace Z, by a runner d having branches d. Each
spout opens directly above the line of travel of deflectors E (some of which
are shown in Figure 1,) extended longitudinally inward over the moulds and
serving to prevent the molten metal from falling between the latter. These
deflectors consist of inverted V-bars supported at their outer ends by posts or
uprights e positioned on the circular carrier.
In practice, the molten metal will be deposited in the moulds as they pass
beneath the spouts of the ladles, the carrier being revolved at a rate of about
ten feet to the minute. But this speed may be varied. The pouring of the
metal is continuous until the supply is exhausted; and the rotation of the mould-
carrier is likewise continuous. As the filled moulds travel toward the point of
discharge (the carrier being moved in the direction of the arrow v) they may be
sprayed with water to aid in cooling the metal so that a solid pig will be deli-
vered at the point of discharge. As each mould reaches the latter point its
depending arm will contact with the post D, resulting the turning of the
mould and the dumping of the pig therefrom. When but two arms are pro-
vided for each mould, the latter is completely inverted, by the contact of an
arm with the post, aided by the weight of the pig, causing its previously lowered
side to be face upward to receive the molten metal when the mould again comes
beneath the discharge-spout of the ladles. But when it is desired to successively
use the four chambers or cavities of each mould as receivers for the molten metal,
the same will be given but a quarter turn and the pig will fall therefrom by its
own weight. Thus it will be seen that the metal received in the several moulds
in a molten state is discharged solidified in pigs. The undersides of the several
moulds, after the upper side has been filled, may, while the carrier is being
revolved, be spraved with a mixture of fire-clay and lime-water, or any other
suitable fluid to prevent the metal from adhering thereto.
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
-
1. A casting apparatus comprising a circular wheel-like revolving carrier, a
series of moulds pivotally mounted at their ends upon the said carrier and provided
with at least two mould cavities, and a stationary post adjacent to said carrier.
two or more projections on each of the said moulds which strike the said post and
thereby rotate the mould to upset one of its mould cavities and simultaneously
bring another into upright position, substantially as set forth.
2. A casting apparatus comprising a circular wheel-like revolving carrier. a
series of moulds pivotally mounted at their ends upon the said carrier and provided
with at least two mould cavities, and a stationary post adjacent to said carrier, two
or more projections on each of the said moulds which strike the said post and
thereby rotate the mould to upset one of its mould cavities and simultaneously
bring another into upright position, and means which tend to keep each mould

page_text: in its upright position until it is rotated by the said post, substantially as set
forth.
3. A casting apparatus comprising a circular revolving carrier, a series of
circularly-arranged moulds pivotally mounted at their ends on said carrier, each
of said moulds having a plurality of chambers or cavities extending longitudinally
thereof and also having at one end a boss provided with opposite flattened por-
tions, a series of spring-arms secured on said carrier and bearing each on one of
the flattened portions of said bosses, oppositely-extended arms carried by each
mould and located outside of said carrier, and a stationary post, also outside of said
carrier, with which each of said arms is designed to successively engage, substan-
tially as set forth.
4. The combination with a circular revolving carrier having inner and outer
rings, of a series of moulds pivotally mounted between said rings, each of said
moulds having its top, bottom and sides formed to receive molten metal, springs
on said carrier bearing on said moulds, a post outside of said carrier, and a
plurality of arms carried by each mould to engage said post in succession as each
mould passes and thereby rotate another mould-cavity into position, substantially
as set forth.
5. The combination with the circular revolving carrier, and a series of circularly-
arranged moulds mounted on said carrier adjacent to the circumference thereof,
of a series of deflectors consisting of horizontally-disposed bars extended longi-
tudinally above the said moulds, supports for said bars mounted on said carrier,
and supply-spouts opening above sail bars, substantially as set forth.
6. The combination with the circular revolving carrier having at and near its
circumference, outer and inner rings, a series of circularly-arranged moulds having
studs projecting from their inner and outer ends loosely mounted on said rings,
the outer stud of each mould being provided with oppositely-extended arms, each
of said moulds having a plurality of chambers or cavities, and a boss on its outer
end formed with flattened portions, spring-arms secured on said outer ring and
bearing at their free ends on said bosses, and a post outside of said outer ring
with which each of said arms is designed to successively engage, substantially as
set forth.
01 Tay
3.
For the Applicant,
J. G. LORRAIN, M.I.Mech. E. M.,I.E.E.,
Norfolk House, Norfolk Street, London, W.C.,
Chartered Patent Agent.