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Патент USA US2126536

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Aug. 9, 1938.
.
c. c. cox ET AL"
2,126,536
MOLD COOLING DEVICE FOR LINE CASTING MACHINES
Filed Oct. 7, 1936
2 Sheets-Sheet 1
III IlIl‘IlII IIII IIII III!
(' 1-132
(I INVENTOR5.
. (oz and
e149
ATTORNEY?'.
Aug. 9, 1938.
c. c. cox ET AL
2,126,536
MOLD COOLING DEVICE FOR LINE CASTING, MACHINES
Filed ‘Oct. 7, 1936
2 Sheets-Sheet 2
\
INVENTORJ,
Cal-£1 C Cox arm!
BY
Patented Aug. 9, 1938
2,126,536
UNiTED STATES PATENT OFFICE.
2,126,536
MQLD COOLING DEVICE FOR LINE CAST
ING MACHINES‘
Cyril C. Cox and Earl L. Purdy, Indianapolis, Ind.
Application October 7, 193d, Serial No. 104,472
3 Claims. (Cl. 199-56)
The present invention relates to improvements
in line casting machines and has particular ref
erence to machines of the type usually referred
to in commercial art as the Linotype machine
(It ‘or the Intertype machine, although the inven
tion is applicable to other types of machines hav
ing substantially the same characteristics.
In machines of this character there is usually
provided a mold disc provided with one or more
‘1 mold cavities therein which extend from the face
of the disc to the rear of the disc.
In addition to this mold disc there is provided
what is known as a vise, in the commercial art,
which is hinged at its lower end and, during
"91 normal operation is held by suitable hand screws
at its upper end in direct proximity to the face
of the mold disc. This Vise carries the matrices
against which the metal is forced for the pur
pose of making the type and also carries trim
20 ming knives, which are arranged on either side
of an ejector opening in the vise and through
which opening the cast slug is adapted to be
ejected after the cast has been made.
The mold disc during the molding operation is
adapted to be placed in communication with the
metal pot in which the molten metal is adapted
to be contained to receive from the metal pot a
proper supply of molten metal for casting a slug.
One of the difficulties heretofore experienced
130 ilin casting Linotype or Intertype slugs and the
like is that due to the rapid operation of, the
machine the mold in the mold disc becomes so
heated, from frequent injections thereinto of the
hot metal during the cast, that the metal when
set as soon as the molten metal is delivered to
the mold cavity.
As a result of the maintenance of the mold
cavity and its surrounding walls in a cooled con
dition, not only is it possible to obtain a more
solid slug but it is possible to obtain the slug
without varying the temperature of the metal in
the metal pot or mouth piece. The mold disc
as a rule has one or more mold cavities therein
of different sizes so that different size slugs may 10..
be cast. Obviously, without means for cooling
the molds, it would be necessary to change the
temperature of the metal in the pot or mouth
piece when changing from large to small or from
small to large slugs, as the case may be, to com
pensate for the variation in the heat of the mold. '
The difficulty is, not that the metal in the pot
really gets too hot but that the mold becomes so '
heated by the repeated casting of hot metal in
the same mold, that, due to the increasing heat
of the mold itself, the metal will not be cooled
quickly enough to cause the slug to be properly
cast. By maintaining, through the medium of
the present invention, the temperature of the
mold cavity comparatively low, no adjustment
need be made in the temperature of the metal
pot or the metal contained therein.
For the purpose of disclosing the invention,
certain embodiments thereof have been illus
trated in the accompanying drawings. In said
drawings,
Fig. 1 is a front elevation of a mold disc used
on the Intertype machine;
Fig. 2 is a face view of the vise, looking at the
same as it is let down on its bottom hinges from 35
"" “forced into the mold is not properly cooled. As
the mold disc;
a result, when the metal does not take a quick
Fig. 3 is a partial face view of the mold disc
set, due to the suction effect of the plunger in
showing the position of the air delivering tube;
the metal pot, there is a tendency for the metal
Fig. 4 is a diagrammatical view of a layout for
in the mold to be drawn back into the metal pot.
supplying compressed air to the air tube;
40 ‘This of course results in a skeleton slug instead
Fig. 5 is an elevation of a modi?cation of the
of a solid slug. Furthermore, where the metal
invention
wherein the air delivery means is em—
is not quickly and properly cooled the resultant 1
bodied in a trimming knife of the type adapted
slug is porous and soft and is apt to become dam
__aged when the slug is ejected from the mold for use in connection with a Linotype machine;
and
cavity by the operation of the ejector blades.
and be crushed under the tremendous pressure
exerted on the face of the slug during the stereo
typing process and under the impression rollers
of the press.
.
It is one of the objects of our invention to pro
vide means for properly, adequately, and quickly
cooling the mold cavity of the mold disc and
maintaining the same in a properly cooled con
dition so that the slug will quickly and properly
Fig. 6 is a similar view in connection with a
trimming knife adapted for use in connection
with an Intertype machine.
In the structure illustrated, the mold disc I is
of the usual and standard construction now em
bodied in the commercial Intertype machine.
This disc is provided with a series of openings in
which the molds 2, 3, 4, and 5 are shown. As
will be noted, these mold cavities are of different
size for different size slugs and the disc is adapted 55
2
2,126,536
to be rotated to present any selected mold to its
casting position and ejecting position.
In the
structure illustrated the mold cavity 3 is in its
casting position and the mold cavity 2 is in its
ejecting position; the disc having been rotated be
tween the casting position and the ejecting posi
tion approximately three-quarters of a turn.
Mounted on the vise l’ is a pair of trimming
knives 8 and 9 which are usually in front of the
10 ejector opening of the Vise. When the parts are
assembled in operative position these trimming
knives 8 and 9 are immediately opposite the mold
cavity when the same is in its ejector position so
that the slug may be forced out of the mold cav
16 ity by means of the ejector blades between the
knives and through the ejector opening in the
vise. During the passage between the knives the
sides of the slug are properly trimmed. Due to
the fact that these knives are adapted to coop
20 erate with mold cavities of different widths, one
of the knives, preferably the knife 9, is made lat
erally movable by the operator through suitable
lnstrumentalities.
In order to properly cool the mold cavity, and
25 incidentally, the slug as it is being ejected there
from, we mount in a position adjacent the ejector
position of 'the mold cavity an air delivery tube
| I. In order to accurately position this tube rel
atively to the mold cavity, the tube is provided
30 with a pair of mounting lugs l2 which are
adapted to be secured, by means of bolts or ma
chine screws I 3 directly to the face of the ad_
justable knife 9. Thus the cooling tube is auto
matically positioned for all sizes of slugs. This
35 air tube is provided with a series of openings l4
and so formed in the tube as to direct the air
against the body of the mold and into and
through the mold cavity or cell. ' As a result, air
under compression is forced into the cavity to
40 quickly chill or cool the cavity after the ejection
of the slug. Furthermore, ‘during the ejection of
the slug air is delivered against the slug and the
surrounding parts of the mold.
We have discovered, as a result of rather ex
tensive experiments, that this air should be, to ac
complish satisfactory results, clean, free from
moisture, and free from oil. It should be per
fectly dry and of course free from dust to pre
vent the accumulation of dust, moisture, or oil
50 in the mold cavity which, of course, would pre
vent a perfect formation of a slug and would also
transmit oil and moisture to the more delicate
mechanism of the machine which of necessity
must be kept from these elements at all times.
55 To this end, we provide means for ?ltering the
air before it is delivered to the tube.
In actual practice, in addition to the tube,
which is mounted as above described, we also
mount on the machine, adjacent the operator, an
60 air-controlling valve l5 which is connected by a
suitable ?exible conduit IS with the air delivery
tube II. This ?exible tube permits the sta
tionary mounting of the control valve l5 and at
the same time so connects the valve with the tube
65 as to permit relative movement between the tube
and the valve, thereby permitting the opening
and closing of the vise without disturbing the
parts. The valve I5 is connected by a conduit IT
with an air ?lter I 8 preferably mounted on some
stationary part of the machine itself, although
this is not essential, while being desirable. This
?lter I8 is connected by a conduit l 9 with a mas
ter ?lter 20 which may be mounted in some part
of the building and from which various branches
may be taken for the purpose of delivering com
pressed air to a number of machines located in
the building. The master ?lter 20, of course, is
suitably connected with a supply of compressed
air which may be in the form of an electrically 10
driven compressor or any other desired source.
By the provision of the control valve IS the
proper quantity or ?ow of air to meet varying
conditions in the machine may be controlled by
the operator without changing his position.
15
If desired, instead of mounting a separate tube
on the adjustable knife, as illustrated in Fig. 2,
provision may be made whereby air is supplied
through the knife itself. To this end a knife, as
illustrated in Fig, 5, may be provided, which is 20
provided with a longitudinally extending open
ing communicating with air delivering openings
21 corresponding to the openings l4 in the tube
ll. These openings are so directed as to deliver
the air to the mold cavity in the same manner as 25
they are delivered by the separate tube, as illus
tratedin Fig. 2. The knife may be connected by
a conduit 22 and suitable coupling 23 with the
air supply conduit 16. The speci?c structure of
knife illustrated in Fig. 5 is adapted for the Lino 30
type machine. In Fig. 6 we have illustrated a
knife 24 likewise having openings 25 therein sim
ilar to the openings l4 and 2|. This knife is of
the type used on the Intertype machine. In all
instances, however, it will be noted that the air 35
supply is delivered directly into the mold cavity
so that it will reach the innermost recesses there
of and the air supply means is mounted to move
with the adjustable knife so that the same rela
tive position of the air supply will be maintained 40
irrespective of the difference in size of the mold
cavities positioned for use.
We claim as our invention:
1. In a line casting machine, the combination
with a mold disc having a mold cavity therein, a 45
vise associated with said disc and trimmer knives
mounted on said vise, one of which is movable,
of means carried by said movable knife for de
livering air into said mold cavity.
2. In a line casting machine, the combination 50
with a mold disc having a mold cavity therein, a
vise associated with.v said mold disc, trimmer
knives mounted on said vise, one of which is ad
justable, and an air-delivery conduit carried by
said adjustable knife having a plurality of air 55
delivery openings directed toward said mold cav
ity and adapted to deliver air into said cavity.
3. In a line casting machine, the combination
with a mold disc having a mold cavity, a vise as
sociated with said disc, and trimmer knives 60
mounted on said vise, one of which is adjustable,
said adjustable knife having a conduit formed
therein and extending longitudinally thereof and
having a plurality of discharge nozzle openings
extending from said cavity to the face of said 65
knife and directed toward said mold cavity.
CYRIL C. COX.
EARL L. PURDY.
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