IMPROVEMENTS IN MACHINERY FOR CASTING, PRESSING, AND CONDENSING METAL
Year: 1874

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, Doctor of Laws, for the
Invention of "IMPROVEMENTS IN MACHINERY FOR CASTING, PRESSING,
AND CONDENSING METAL."-A communication from abroad by John
Blake Tarr, of Fairhaven, Massachusetts, United States of
America.
Sealed the 9th February 1875, and dated the 9th December 1874.
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 9th December 1874, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
HASELTINE, of the "International Patent Office," Southampton Build-
ings, London, Doctor of Laws, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS
IN MACHINERY FOR CASTING, PRESSING, AND CONDENSING METAL," and have
petitioned Her Majesty to grant unto me, my executors, adminis-

page_text: J
trators, and assigns, Her Royal Letters Patent for the same, and have
made solemn Declaration that it has been communicated to me from
abroad by John Blake Tarr, of Fairhaven, Massachusetts, United States
of America.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and seal,
fully describes and ascertains the nature of the said Invention, and in
what manner the same is to be performed, in and by the following
statement, reference being had to the accompanying Drawing forming
a part of this Specification:--
The nature of this Invention consists mainly in the employment in
combination with a follower, which presses with upward strokes of a
reservoir for containing a surplus amount of metal after the filling of
the mould or moulds, so that during the act of pressing and condensing
the metal in the moulds there will be a certainty of having an equal
quantity of metal in all the moulds, and the castings will be homo-
geneous.
The said Invention also consists in a funnel-shaped sprue or filling
tube in combination with a surplus metal reservoir, and with passages or
runners leading from this reservoir to the moulds, said sprue or tube
being provided with a cut-off bar, and being so arranged with relation to
the moulds that when the sprue is filled it will indicate that the moulds
are all filled.
The said Invention finally consists in novel means for confining the
covers on the tops of the mould boxes, and at the same time firmly
holding these boxes down upon their bed during the pressing and
condensing process, as will be fully understood by referring to the
accompanying Drawing, which I will now proceed to describe.

page_text: Figure 4 is a section through Figure 1 on the horizontal plane indi-
cated by the dotted line z, z, showing the packing for the piston.
cated by the dotted line %, z, showing the packing for the piston.
Figure 5 is a perspective view of one half of one of the runner
bricks.
Figure 6 shows the lower end of one of the bails and one of the hooks
for holding down the bails.
Figure 7 is a side view of the pouring sprue tube.
Figures 8 and 9 show the rods and holding down bars for confining
the mould box caps in their places.
In this Drawing I have represented upon the press bed A a number of
mould boxes which are designed for casting ingots; but I wish it under-
stood that I do not limit myself to the casting of ingots, nor to the
number of mould boxes used.
The bed A on which the mould boxes B are applied; is firmly secured
upon a circular head D, and constructed with a central opening through
it leading down into a reservoir E of cylindrical form. Radiating from
the centre of the bed A are a number of recesses made in this bed, which
recesses are filled with centrally divided blocks J composed of some
suitable refractory substance, and having passages e through them
leading into the bottoms of the mould boxes. The blocks J can be
removed at any time, and replaced by other blocks.
C designates a sprue or pouring tube, which is diametrically divided;
the two parts of which it is formed are secured together by means of bolts
passed through ears f, f, shewn in Figures 3 and 7. This sprue tube C
is constructed with a flanged base C¹, and is secured upon the bed A in
the centre thereof by means of posts and keys, or in any other suitable
manner. The sprue tube C is readily.detachable from the bed A, and
when it is detached it can be divided, and any adhering metal removed
from it. In practice, the sprue tube O will be higher than the mould
boxes B, and it will have an opening through one side of it to receive a
cut-off bar N for a purpose herein-after explained.
The upper flanged end of the cylinder which forms the reservoir E
should fit loosely through the head D for allowing free expansion and
contraction, and inside of this reservoir E works a follower or pressing

page_text: head F, which is surrounded by a collar composed of expansible scg-
ments c acted on by springs 8. These segments c constitute a packing
for the follower F, and prevent the leaking of metal out of the bottom
of the reservoir E while filling the press and condensing the metal in the
mould boxes.
The follower F is guided by a circular head H against which the seg-
ments c rest, and to this follower F a piston rod F' is rigidly secured; this
rod passes through a stuffing box b'in the upper head of the cylinder G,
and is secured to a piston G' working therein, as shown in Figure 3.
The cylinder G and the two heads D, H, are secured together in a
substantial manner by means of tie rods L, which will resist the strain
on the press during the pressing and condensing operation. The pressing
is performed by means of a hydrostatic pump, which is not shown in the
Drawing, and with which the cylinder G communicates by means of
pipes a, a.
P, P, designate bails having screws p, p, tapped through their upper
ends, and hooks t, t, formed on their lower ends; and r, r, designate
under beveled hooks, which are firmly secured to the bed A in the
proper position (with respect to the press boxes when they are in their
places on said bed) for receiving the hooks t on the bails P when these
bails are adjusted over the mould boxes, as shewn in Figure 1. The
set screws p are used for firmly confining down the covers B¹ and
holding the boxes B securely upon the bed A over their respective
runners e.
The follower F is depressed to the position shown in Figure 3, and
the melted metal is poured into the sprue tube C, first filling the
reservoir E, then rising through the runners e, and simultaneously filling
the several mould boxes B. The pouring is continued until the metal
completely fills the sprue tube C, and as this tube is higher than the mould
boxes it is known with certainty that the mould boxes are all filled with
the metal. The cut-off bar N is then forced into the sprue tube C, and
the pressure is applied beneath the piston G¹ which moves up the
follower in the reservoir E, and condenses the metal in all of the moulds
at the same time.
It will be seen from the above description that I always have a
surplus amount of metal in the reservoir E after the operation of

page_text: pressing, which insures the proper filling of the mould boxes, and the
making of solid castings. The "button" or surplus metal left in the
reservoir E, as well as the metal left in the runners e, can be used
without recasting it, as it will be condensed like the metal in the mould
boxes.
Instead of using the bails and hooks above described for holding
down the mould boxes, I prefer to employ, in case a great many
moulds are to be filled at one time, the device represented in Figures 8
and 9. This device consists of holding down bars Q having half eyes w
formed on their ends in combination with rods X rising perpendicularly
from the plate A, and having screw threads formed on their upper ends
with shoulders below the threaded portions for affording bearings for the
ends of the said rests. The bars Q are applied over the caps B₁ of the
mould boxes, and are held down in their places on the shoulders of the
rods X by means of washers and keys o¹. After thus securing the
bars Q wedges y are driven in between them and the mould box caps B.
C³, C³, designate rectangular plates which partly cover the recesses in
the bed plate A for receiving the runner bricks J, and which are held down
in their places by under cut shoulders 2, 2, formed respectively on the
flange C¹, and the lower ends of the mould boxes, as shewn in Figure 3.
By means of the removable plate C³ the bricks J can be taken out of
their recesses when the sprue tube C and the mould boxes are taken off
the bed plate A.
Having thus fully described the said Invention, as communicated to
me by my foreign correspondent, and the manner of performing the
same, I wish it understood that I claim,-
First. In combination with a follower which operates with an upward
pressure the surplus reservoir E communicating with the bottom of a
mould box or mould boxes, as above described.
Second. The pouring sprue tube C arranged over the reservoir E and
follower F in combination with a runner or runners leading into a
mould box or mould boxes at the bottom thereof, substantially as
described.
Third. The bails P hooked and provided with set screws p in com-
bination with the hooks and mould boxes B having removable
covers B', as above described.

page_text: Fourth. The plates C* combined with the runner bricks J and the
shouldered mould boxes B and shouldered flange C³, in the manner and
for the purposes described.
In witness whereof, I, the said George Haseltine, have hereunto set
my hand and seal, this Ninth day of December, in the year of 5
our Lord One thousand eight hundred and seventy-four.
for the purposes described.
In witness whereof, I, the said George Haseltine, have hereunto set
my hand and seal, this Ninth day of December, in the year of 5
our Lord One thousand eight hundred and seventy-four.
Witness,
JA'. EDWARDS,
8, Southampton Buildings,
London.
GEORGE HASELTINE. (L.S.)