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Патент USA US3069010

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Dec- 18, 1962
Filed Sept. 23, 1959
United States Patent 0 -"' Ice.
Patented Dec. 18, 1962
Other objects and advantages will be apparent from the
William B. Abbott, Baldwin, and Herbert Klepper, Brook
lyn, N.Y., assignors to Mergenthaler Linotype Com
pany, a corporation of New York
Filed Sept. 23, 1959, Ser. No. 841,855
1 Claim. (Cl. 199-56)
following description.
In the drawings:
FIGURE 1 is a front elevational view of a mold disk
having the present invention incorporated therewith; and
FIGURE '2 is a vertical cross-sectional view taken on
line 2—2 of FIGURE 1.
Referring to the drawings, a rotatable mold disk 10‘ is
This invention relates to line casting machines of the
shown provided with four mold pockets 11, although the
general organization, represented in US. Letters Patent to 10 invention is, of course, applicable to disks having a larger
O. Mergenthaler, No. 43 6,532, wherein a type bar or slug is
or smaller number of pockets. In practice, slug casting
cast in a slotted mold against a composed line of matrices
molds are inserted in each of these pockets, although in
and then forced out of the mold and into a galley by an
the drawings, only one pocket is shown occupied by a
ejector which advances against the rear edge thereof. As
mold. Each mold consists of an upper or cap portion 12,
is well known, the mold is removably mounted on a ro 15 a lower or body portion 13, and two intermediate end
tatable disk which, during each machine cycle of opera
pieces or liners 14. The mold disk is formed on its outer
tion, is ?rst rotated through 90° to carry the mold from
the ejecting to the casting position and then through 270°
to carry the mold from the casting position back to the
ejecting position. Ordinarily, the disk is equipped with
periphery, radially outward of the mold pockets, with a
gear teeth rim portion 15 by which it is rotated. Radial
ly inward of the mold pockets 11, the mold disk presents
a hub portion 16, mounted to rotate on a ?xed journal stud
four molds, any one of which may be selected for use
20 secured to the customary mold slide 17.
by a manual rotary adjustment of the casting Wheel.
A continuous channel 24 is cut into the face of the
In order to avoid overheating of the mold in use, it is‘
mold disk 10, the channel beginning at the hub portion
customary to provide the disk with a liquid cooling sys
16, following a path about the disk face, and terminating
tem. Such arrangements proposed in the past have, for 25 at the hub portion right next to the channel’s point of
one reason or another, proven unsatisfactory. For exam
origin. The path traced out by the groove de?nes gener
ple, in US. Patents No. 977,280 and 1,075,024, the pas
ally two concentric circles, the inner one of which has a
ageway through which the cooling ?uid ?ows is disposed
radius smaller than the shortest radial distance between
adjacent the rim of the mold disk. In this position, the
the center of the mold disk and the inner edges of the
?uid does not cool the mold body e?iciently because of its 30 mold pockets 11, while the outer circle has a radius greater
distance from the mold body, nor does it cool the mold cap
properly since the mold cap is, as is well known, mounted
within a mold pocket which is larger than the mold, hence
an air space exists between the mold cap and the disk,
which space serves to insulate the heated cap from the
cooling ?uid. In Patent No. 1,596,943, the disadvan
tages of the above two patents are overcome by providing
cooling ?uid passageways in the mold cap and mold body
themselves. Although such an arrangement leads to
more ef?cient cooling, its use is impractical since each
time a mold is replaced the coolant passageways are inter
than the longest radial distance from the mold disk center -
to the outer edge of the mold pockets. A long unbroken
cooling tube 25, through which the mold cooling ?uid
?ows, is deformed to exactly the same shape as the chan
nel 24 so that it ?ts properly into the channel. When
placed in the channel 24, one end 26 of the tube 25 coin
cides with the beginning point of the channel, and the
other end 27 coincides with the terminating point thereof.‘
The channel has a depth at least equal to or greater than
the diameter of the tube 25 so that the tube may be com
pletely embedded in the web of the mold disk. When the
tube has been positioned in the channel, the latter is ?lled
with a metallic ?ller, such as for example, solder in order
to permanently ?x the ?uid passageway with respect to
45 the disk, to provide a heat ?ow path, and to make the
face of the mold disk ?ush once again.
The two ends 26 and 27 of the cooling tube 25 com
municate through a pair of bores 28 and 29, respectively,
_ 3,020,999) wherein the coolant passageways pass through
located in the hub 16, with two annular areas formed by
a pair of ?lling pieces, one disposed between the mold 50 a pair of peripheral grooves ‘30 and 31 in the ?xed stud
cap and the disk, and the other disposed between the mold
20. Three additional narrower peripheral grooves 32 are
body and the disk. However, while this arrangement
formed in the stud 20, one between the grooves 30 and
otters suf?cient cooling of the mold, and permits the cool
31 and the other two outwardly of the grooves 30 and 31
ant passageways to remain uninterrupted even when
on either side thereof. Each of the grooves 32 accommo
changing molds, a serious de?ciency has presented itself. 55 dates a gasket 33 which insures a ?uid tight rotary seal
Speci?cally, since the height of the mold cap has been de
between the stud 20 and the hub 16. The grooves 30 and
creased in order to make room for the ?lling piece be
31 are provided with the ports 36 and 37 respectively, the
tween it and the disk, the “thinned-out" mold cap loses
port 36 opening into a passageway 34, formed in the stud
some of its rigidity causing it to yield under the high pres
20 longitudinally thereof, and the port 37 opening into
sure which develops within the mold during casting. This
a passageway‘ 35, formed in the stud parallel to the pas
rupted necessitating the shutting o? of the cooling ?uid
supply and the opening of numerous sealing points. Such
interruption is further undesirable due to the leakage of
cooling ?uid from the dissassembled passageway. All
these problems were apparently solved by the British Pat
ents 725,035, and 720,937 (corresponding to copending
US. application Serial No. 358,390, now US. Patent No.
naturally results in the production of an imperfect slug. ‘
The present invention is intended to eliminate all of
the above objections andptoward that end coolant pas
sageways are provided in the mold disk adjacent the mold
cap and the mold body, and the mold cap is so mounted 65
on the mold disk that a relatively large heat transfer area
is provided therebetween. In this way, efficient cooling
of the mold is insured. Furthermore, the cooling ?uid
passageways are not interrupted when a mold is removed
sageway 34.
The passageway 34 communicates with a
coolant inlet pipe 40 and the passageway 35 communicates
with a coolant outlet pipe 41. In practice, the cooling
?uid, be it water or oil, is supplied to the inlet pipe 40,
?ows through the passageway 34 into the annular area
formed by the groove 30, from there through the bore 28
in the hub 16, and thence into the tube 25, wherein it
picks up the heat of the molds. The ?uid leaves the tube
‘25 via the bore 29‘ in the hub 16, ?ows into the annular
from the disk, or when mold liners are changed, and the 70 area formed by the groove 31, and thence through the
passageway 35 into the outlet pipe 41. Since the ends of
casting pressure.
the bores 28 and 29 communicate constantly with the
mold cap is su?iciently rigid to resist deformation by the
peripheral grooves 30 and 31, the coolant continues to
when mold liners are changed. Secondly, since the ?ange
?ow even when the mold disk 10 is rotated.
portion of the mold cap is located near the cooling tube
and a relatively large heat transfer contact area exists
The mold itself, which is mounted for removal in a
facewise direction from the mold disk 10, comprises a
conventional mold body 13, fastened to the web of the
mold disk by four screws 42, a pair of mold liners 14, and
the mold cap 12. The mold cap 12 comprises a base
portion 12b and an upwardly projecting ?ange 1241. The
base portion 12b is short enough to be accommodated
by the mold pocket 11, but on the other hand is made as 10
tall as possible, in order to afford a rigid mold cap con
between the ?ange and the face of the cooled mold disk,
proper cooling of the mold is insured. Thirdly, the
height of the mold cap base together with the additional
material of the mold cap ?ange, make the mold cap rigid
enough to maintain its shape against the high casting
The invention has been shown and described in pre
ferred form only and by way of example, but many varia
tions and modi?cations may be made therein and in its
mode of application which will still be comprised within
mold pocket. The ?ange 12a, which is integral with the'
its spirit. It is understood, therefore, that the invention
base portion 12b, is disposed in front of and in contact 15 is not limited to any speci?c form or embodiment, except
insofar as such limitations are speci?ed in the appended
with the mold disk face and extends radially away from
the mold disk center. The ?ange is tall enough to reach
What is claimed is:
beyond the upper edge of the mold pocket, i.e. the edge
struction, and as such the mold cap base, together with
the mold body and mold liners, substantially ?lls the
most remote from the mold disk center, to a point ad
In or for a typographical line casting machine, means
jacent the rim 15, and the ?ange therefore overlays the 20 for cooling the mold thereof comprising a rotatably
mounted disk having a pocket for receiving the mold,
portion of the mold disk face between the mold pocket
said pocket having an arcuate wall adjacent the periphery
and the rim. Since a portion of the cooling tube 25 is
of the disk, a water conduit embedded in the face of said
embedded in this portion of the mold disk close to the
disk adjacent the said pocket, means including a station
face thereof, the mold cap‘ ?ange is brought very close
to the coolant ?owing through the cooling tube, thus 25 ary stud upon which said disk is mounted for providing
a water passage to said conduit, and a mold having a
o?’ering excellent cooling of the mold cap. Cooling of
body that is ?anged to permit attachment of the mold
the mold cap is further aided by the arcuate shape of
body to the face of said disk and a cap that is ?anged
the top surfacev of the ?ange 12a which conforms to the
to permit attachment of the mold cap to the face of said
curvature of the mold disk rim 15. This shape provides
the‘ optimum heat transfer contact surface between the 30 disk, said cap having a base portion that projects into the
pocket formed in the mold disk and is arcuately shaped
mold disk face and the mold cap ?ange. Furthermore,
to conform to the arcuate wall of said pocket, the ar
a ?ange of this shape contains the maximum amount of
rangement being such that the ?anged portions of both
material for a ?ange of its height and thickness which
the body and the cap overlay the water conduit embedded
does not extend over the gear tooth rim 15, hence the
?ange substantially increases the rigidity of the mold cap. 35 in the face of said disk.
The mold cap 12 is fastened to the web of the mold
disk by the screws 43 which pass through the elongated
slots‘ 44 in the ?ange 12a and are threaded facewise into
the mold disk. The slots 44 permit the cap to be adjusted
radially of the mold disk toward and away from the 4.0
mold body 13 as the point size of the slug to be cast is
References Cited in the ?le of this patent
Wich _______________ __ May 1, 1900
Degener ____________ __ Nov. 29, 1910
Degener _____________ __ Oct. 7, 1913
The cooling. system and mold cap construction of the
Kennedy _______ _;_____ Oct. 26, 1915
present invention therefore, have several advantages.
Petersen ____________ __ Aug. 24, 1926
Firstly, since the coolant carrying tube is embedded in 45
the mold disk, the system need not be interrupted when
a mold in the pocket of the mold disk is replaced or
Great Britain ________ __ Mar. 2,
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