Year: 1897

page_text: Date of Application, 23rd Mar., 1897-Accepted, 5th June, 1897
I, ALEXANDER, SWEENEY CAPEHART, of Bismarck, North Dakota, United
States of America, Journalist, 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 type-setting and line casting machines wherein lines
of movable female type, or lines of impressed matrices, are presented to one side.
of a mold and molten metal from a casting-pot is introduced at the opposite side,.
for casting type-high printing bars.
The objects of this invention are to provide novel means for supplying and
heating the casting-pot; to avoid unduly heating surrounding parts of the machine,
and to provide novel means for supplying molten metal to the casting pots of a
group of line casting machines.
In the accompanying drawings, Figure 1, is a side elevation partly sectional,
Figure 2, is a diagram plan, and, Figure 3, is a side view partly sectional of a.
modification.
1, indicates a casting-pot, 2 a mold, and 3 one of several matrix-bars assembled
in line at the side of the mold opposite the side presented to the casting-pot. The
casting-pot, which is arranged in communication with the mold, is preferably
composed of a cylindrical casing containing a plunger 4, and is constructed with a
throat 5 having a delivery mouth 6 of a length co-extensive with the length of the
mold-cell in which the type-high printing bar is cast.
The cylindrical casing has near its lower end a lateral inlet orifice 7, in com-
munication with a metallic pipe 8, leading to a melting pot 9, heated by the flame
from a gas burner 10, or otherwise. The melting pot is at a distance from the
type-setting and line casting machine, and preferably at a higher level than the
casting-pot 1 so that the molten metal may flow by gravity through the pipe 8 to
the casting-pot 1.
The pipe 8 is electrically heated by properly coiling on it a wire conductor 12,
connected with a dynamo or other source of electric energy. The casting-pot is
also heated by an electric conductor 13, coiled around it. The electric conductor
for heating the pot may be a part of, or it may be independent of the electric
conductor for heating the pipe. The electrical appliances for heating the pipe and
the casting-pot, may be of any construction and arrangement suitable for maintaining
the metal in the pipe and the pot in a molten condition, and avoiding the use of a
flame from a gas or other burner in the line casting machine.
The plunger 4, serves to open and close communication between the pot and the
pipe through the orifice 7. When the plunger descends, the communication
between the pot and the pipe is closed, and the metal in the pot is displaced and
forced through the throat 5 and delivery mouth 6, into the mold-cell where the
printing bar is cast. When the plunger ascends, the metal in the delivery mouth
and throat is drawn towards the casting-pot, and the communication between the
pot and the pipe is established for supplying the pot with additional metal. The
melting-pot 9 may communicate by several electrically heated pipes with the casting-
oots of several line casting machines, as shewn in Figure 2.
The casting-pot 9 and the whole, or a part of the pipe 8 are jacketed as at 14,
with non-conducting material, to prevent undue radiation of heat.
In Figure 1 the cylinder of the casting-pot 1 is arranged within an outer cylinder
>
1

page_text: around which the electric conductor 13 is wound, and the whole is enclosed in a
casing 15 of known form.
In Figure 3 is shewn the preferred form of casting-pot, having the electric
heating coil 13 placed directly upon the cylinder in which the plunger 4 operates
and extends along the throat 5 up to the delivery mouth 6. The casting-pot,
Figure 3, may be jacketed with any suitable insulating material.
The delivery of the molten metal to a casting-pot having a force-pump, or its
equivalent, and a delivery mouth constructed to co-operate with a mold designed to
cast a printing bar, or a solid line of relief characters, is important, as the casting-
pot is thus constantly supplied and possesses the characteristics which are essential
for the practicable production in a type-setting and line casting machine of
comparatively long printing bars each having at one edge a line of relief types
representing a line of composed matter for printing purposes.
I prefer to heat the casting-pot solely by electrical means, such as described and
shewn, but the pot may be heated partly by electrical means and partly by the
flame from a burner. In such case the throat and mouth of the pot should be
heated electrically.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of a mold, a casting-pot co-operating with the mold, a
melting-pot at a distance from the casting-pot, a conduit leading from the melting-
pot to the casting-pot, and a plunger arranged in the casting-pot for forcing the
metal into the mold substantially as described.
2. The combination with the mold of a type-line casting machine, of a casting-
pot having an electric heating device applied to its throat which delivers the molten
metal into the mold, a melting-pot distant from the casting-pot, and a conduit
leading from the melting-pot to the casting-pot, substantially as and for the
purposes described.
3. The combination with the mold of a type-line casting machine, constructed to
cast a printing bar bearing a line of relief characters, of an electrically heated
casting-pot having a delivery mouth at one side of the mold, means for displacing
the metal in the pot and forcing it into the mold, a melting-pot distant from the
casting-pot, and an electrically heated conduit leading from the melting-pot to the
casting-pot.
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