Improvements in Rotary Type Casting Apparatus
Year: 1899

page_text: Date of Application, 23rd Feb,, 1899
I, FREDERICK WICKS, of Halfway Lodge, Esher, in the County of Surrey, News-
paper Proprietor, do hereby declare the nature of this invention to be as follows:
My invention consists in certain improvements in rotary type casting apparatus
of the kind described in my previous Specification No. 1462 of 1881, No. 12784
of 1884, No. 4986 of 1894, and No. 17469 of 1897.
In the plungers of the pumps for injecting the molten metal into the moulds
I make cavities which act as air vessels preventing shock when the plungers
make their down strokes. In the passage from the pump cylinders to the nozzle
I provide disc valves each having at its circumference obliquely cut notches
through which the metal flows causing the disc to rotate, and I place these disc
valves in chambers eccentric to the chambers which they cover. Near the nozzle
I provide a relief valve consisting of a plunger loaded to a predetermined pressure
and having through it a passage, which, when the plunger is raised a certain
distance by the pressure of the molten metal below it, allows escape of metal by
a lateral port directed obliquely downwards.
Instead of forming the nicks in the sides of the types by beads projecting down
from the mould cover as described in prior specifications, I make the mould cover
with a flat under surface and I form these nicks by revolving cutters acting on
the types as they are held for a time partly protruded from their moulds by a
stationary cam which has parts of its periphery concentric with the mould wheel.
The notch at the end of the type may also be cut in the same way.
Dated this 23rd day of February 1899
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Rotary Type Casting Apparatus.
I, FREDERICK WICKS, of Halfway Lodge, Esher, in the County of Surrey, News-
paper 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:-
My invention consists in certain improvements in rotary type casting apparatus
of the kind described in my previous Specification No. 1462 of 1881, No. 12784
of 1884, No. 4986 of 1894 and No. 17469 of 1897, as I shall describe referring to
the accompanying drawings."

page_text: Fig. 1 is a vertical section of one of the pumps for injecting the molten metal
into the moulds.
Figs. 2 and 3 are respectively a front and side view drawn to an enlarged scale
of one of the pump valves,
Fig. 4 is a plan and Fig. 5 is a sectional plan on the line A. A of Fig. 6 which i
is an end view.
Figs. 7 and 8 are sections partly in elevation on the lines B B and C C of Fig.
respectively. These Figures 4 to 8. inclusive illustrate apparatus according to
my invention for making the tail notches and the side nicks of the moulded types,
a is the pump plunger in which I make a cavity b to act as an air vessel pre- 1
venting shock when the plunger make its down stroke. In the passage from the
pot into the pump cylinder and from the cylinder to the nozzle, I provide disc
valves c and d each having in its circumference obliquely cut notches through
which the metal flows, causing the disc to rotate, and on the face of each valve
I make a slightly projecting circular rib which seats against the side of the
valve chamber, this rib being somewhat eccentric, so that as the valve rotates, it
does not always seat on the same place. Near the nozzle I provide a relief valve
consisting of a plunger loaded to a predetermined pressure by a weight on a
lever f. It is bored up from the end. and has a cross bore forming a passage g,
which, when the plunger is raised a certain distance by the pressure of the molten:
metal below it, allows escape of metal by a lateral port.h directed obliquely down.
wards."
Instead of forming the nicks in the sides of the types by beads projecting-down
from the mould cover as described in my prior patent, I make the mould cover
with a flat under surface, and-I-form-these-nicks by revolving cutters acting on
the types as they are held for a time partly protruded from their moulds by-a-
stationary cam which has parts of its periphery concentric with the mould wheel.
The notch at the end of the type is also cut in the same way.
i is a fixed cam which acts on the matrix plungers j, so as to cause each type
as it is carried round by the mould wheel to protrude a little and holds it so pro-
truded, while a revolving cutter k cuts the notch in the end of the type. The
type is then farther protruded by the cam i and held in position while the nick
in its side is cut by a revolving cutter 1, or when more than one is required, the
cutter is made with more than one cutting edge. In order to move and hold the
types the cam is made with parts 1 and 3 eccentric to the axis of the mould wheel
and with parts 2 and 4 concentric therewith; these parts facing the type while
it is acted on by the cutters. The bearings of the cutters are made adjustable
so that the depth of cut can be accurately regulated. The cutters are driven by
a band driven from the gear which causes the mould wheel to revolve this band
passes partly round and drives two pulleys, the one m on the axis of the cutter 7,
and the other n on the axes of a spindle 2 which by bevil gear 7 drives the
cutter k.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is:
1. In the pump for injecting molten metal into type moulds a bore hole formed
in the plunger for the purpose specified.
2. For the pump for injecting molten metal into type moulds a valve consisting
of a disc with oblique notches cut in its circumference and with an eccentric
rib on its face, substantially as and for the purpose set forth.
3. In combination with a pump for injecting molten metal into type moulds
a relief valve consisting of a loaded plunger having a longitudinal and cross bore
and located in a cylindrical bore having a downwardly sloped transverse outlet,
substantially as described.
4. In a rotary type casting machine the combination of a stationary cam
adapted to cause protrusion of the types as they are carried round by the mould
wheel, a revolving cutter adapted to cut the notch in the end of the type, and

page_text: one or more revolving cutters for cutting nicks in the side of the type, with
means of driving these cutters from the driving gear of the mould wheel, sub-
stantially as described.
Toted thin 21 dan of Nama 1000