Improvements in Type Moulding Machines.
Year: 1894

page_text: Date of Application, 9th Mar., 1894-Accepted, 9th Mar., 1895
COMPLETE SPECIFICATION.
Improvements in Type Moulding Machines.
1, FREDERICK WICKS, of No. Cheyne Gardens, Chelsea, in the County of
London, Newspaper Proprietor, 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 :-
In my Specification No. 12784 of 1884 1 described a machine for casting types, in
moulds arranged radially in a horizontal wheel with matrix pistons caused to slide
to and fro therein. At a certain point in the revolution of the wheel, the successive
moulds having their matrix pistons then retracted received jets of molten metal, and
after the type, thus moulded, were carried round in the wheel for some distance they
were extruded by the advance of the matrix pistons and received in grooves of a
travelling chain. My present invention consists in improvements in this machine
by which it is rendered more durable and efficient, and to modifications whereby its
operations required for casting a finished type are simplified as I shall describe
referring to the accompanying drawings.
Fig. 1 is a vertical section, and Fig. 2 is a plan of the moulding wheel..
a is the mould. bits stationary cover which I now make hollow so that it is
cooled by water circulating through it, from an inlet 61 to an outlet ² (Figure 2).
c is the matrix piston, the rear end of which I provide with an adjusting screw f
abutting, when the piston is retracted against the stationary cam g the depth of the
mould a being thus accurately adjusted to form a type of proper height, e is the
guide ring for the matrix pistons. Under the moulds and pistons there is a large
cavity d through which water circulates for cooling. The water is caused to flow
up through a passage bored up the stationary shaft and out to a circular groove ¹
sunk in the shaft, from which groove it passes by a hole or several holes 2 into d.
From the water returns by a hole i bored in the revolving sleeve to a groove i
formed in the stationary base, and thence away to a suitable outlet. By means of
a screw the mould cover b is pressed down to close contact with the face of the
mould wheel. On the under face of the cover there is a projecting bead 6³
which forms the nick in the cast type. The upper surface of the wheel has a
circular groove corresponding with the bead 13. When several nicks are required
in the type there are several beads 3 on and corresponding grooves in the upper
face of the wheel. The stationary shield o' which admits the nozzle o has a
projecting bead a¹ to form the notch or groove in the heel of the type, and the
wheel has a corresponding groove in its periphery; through the bead a¹ is bored
the hole by which the molten metal is injected from the nozzle o into the type
mould a. Around this hole there is a space w for circulation of cooling water.
7 are the cogs or teeth on the wheel for engaging with the chain u which carries
away the extruded types. The surplus metal ejected from the nozzle o finds its
way through the space m in the shield to a duct m¹ extending down into the molten
metal in the melting pot t, sealing the interior of the shield against access of air
which otherwise would oxidise the metal. For more effectually preventing
oxidation the space m may be kept charged with a gas that does not oxidise.
Various positions of the matrix pistons as the moulding wheel revolves are
indicated in Fig. 2. At c' the piston has in front of it more than the depth for a
type, at ² it is being advanced by the cam 9 acting on the adjusting screw f;
at it is in the position to form the mould of the right depth. At the part of the

page_text: circumference where the types are extruded and received in the chain u there is a
cover l.
Fig. 3 is a plan, Fig. 4 a side elevation of the chain n.
Fig. 5 being an end view of one of the links.
As shewn in side view in Fig. 6 and in plan Fig. 7 on each side of the chain
in the straight part of its course I provide a thick flexible and elastic band v of
rectangular section which is pressed by guides v against the ends of the types
projecting beyond the grooves of the chain. The bands e travel in a plane inclined
to the plane of the chain and as they hold the types between them they gradually
raise the types out of the grooves of the chain and deliver them onto a pair of
inclined prongs one on each side of the chain whence they are pushed under a
roller von to a galley v.
Instead of employing the matrix pistons for extruding the types, the covers of
the moulds with their beads for forming the nicks of the types may be arranged to
operate for this purpose as shown in Figs. 8 and 9 which are part sections or planes
at right angles to each other of the outer portion of the moull wheel. The chaces
for moulds are deepened so as to accommodate not only the depth of type a and of
matrix (which in this case is stationary) but also a bead 63 projecting down from
covers which are caused to slide radially by upwardly projecting ears engaged
in a cam f2; as 4 moves outwards to the position 66 the bead 63 which moulds the
uick in the type serves to push the type out.
C
Having thus particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I would have it understood
that I make no general claim to type founding apparatus of the kind described in
my Specification No. 12784 of 1884 but what I claim is:-
1. In an apparatus of the kind herein above referred to the employment of
cavities and conduits for circulation of water to cool the heated parts, substantially
as described.
2. In an apparatus of the kind herein above referred to the sealing of the cavity
in the shield against access of air by providing for the metal returning to the pot,
a channel dipping into the molten metal, substantially as described.
3. In an apparatus of the kind herein above referred to, the employment of a
bead in the mould cover and groove in the upper face of the mould wheel or several
of such beads for the formation of a nick or nicks in the type, substantially as
described.
4. In an apparatus of the kind herein above referred to the employment of a
bead projecting from the shield and groove in the periphery of the mould wheel for
the formation of the notch in the foot of the type, substantially as described.
5. In an apparatus of the kind herein above referred to, the employment in
combination with the chain carrying the moulded types of a pair of inclined
travelling bands, inclined prongs and roller, substantially as and for the purpose
set forth.
6. In an apparatus of the kind herein above referred to, the modified arrangement
for extruding the types from the moulds without moving the matrix pistons, by
providing each mould with a longitudinally sliding cover having a projecting bead
or several beads actuated by a suitable cam or equivalent mechanism, substantially
as described.
Dated this 0th day of March 1001