IMPROVED MACHINERY FOR FORMING MOULDS FOR CASTING
Year: 1855

page_text: 66, Chancery Lane, in the County of Middlesex, Mechanical Draughts-
man, for the Invention of "IMPROVED MACHINERY FOR FORMING MOULDS
FOR CASTING."-A communication.
Sealed the 4th September 1855, and dated the 20th March 1855.
PROVISIONAL SPECIFICATION left by the said Alfred Vincent Newton
at the Office of the Commissioners of Patents, with his Petition, on the
20th March 1855.
I, ALFRED VINCENT NEWTON, of the Office for Patents, 66; Chancery Lane,
in the County of Middlesex,. Mechanical Draughtsman, do hereby declare the
nature of the said Invention for "IMPROVED MACHINERY FOR FORMING MOULDS
FOR CASTING "to be as follows:-
The object of this Invention is to facilitate the preparation of sand moulds
for casting pipes and other articles. For this purpose the mould box for re-
ceiving the sand is fitted with a hollow piston, which is worked by means of cams,.
and carries the pattern to be moulded. The pattern is fitted to the piston.by an
arrangement of parallel levers, so that it may receive an independent motion,.
and retire from the sand before the pressure is entirely removed therefrom.)
When moulding pipes, for example, the pattern is suitably shaped to form a
half-round impress in the sand when in its raised position. Hinged to the ends:

page_text: of the mould box are caps, which are thrown over the ends of the box for the
purpose of holding sand when the pipes are required to be cast with bell and
faucet ends. These are thrown back after the sand has been wedged in under
them, and a flask is then placed over the mould box and secured thereto. The
piston carrying the pattern is then caused to rise and press the sand upwards
into the flask, thereby forming a half mould, the compression of which at the
edge or "parting" will be such as to ensure a good casting from the mould.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Alfred Vincent Newton in the Great Seal Patent Office
on the 20th September 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
VINCENT NEWTON, of the Office for Patents, 66, Chancery Lane, in the County
of Middlesex, Mechanical Draughtsman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of March, in the year of our Lord
One thousand eight hundred and fifty-five, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Alfred Vincent Newton, Her special license that I, the said Alfred
Vincent Newton, my executors, administrators, and assigns, or such others
as I, the said Alfred Vincent Newton, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVED MACHINERY FOR FORMING MOULDS FOR CASTING," being
a communication from abroad, upon the condition (amongst others) that I,
the said Alfred Vincent Newton, by an instrument in writing under my hand
and seal, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Alfred Vincent Newton, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawing hereunto annexed,
and to the letters and figures marked thereon (that is to say):

page_text: This Invention.consists in a novel arrangement of mechanism for forming
sand moulds. The sand being placed in a chamber or piston box is moved
therein by a pattern and piston plate surrounding the said pattern, and the sand
is thereby caused to protrude from the piston box and enter a half flask, by
which means the sand at the parting is more compressed than at the central
portion of the half mould, while on the face of the mould it is sufficiently so to
ensure good castings, and preserve an equal thickness of the metal.
In the accompanying Drawing, Fig. 1 is a partial front elevation of the
machine; Fig. 2, a longitudinal section of the same; Fig. 3 is a cross section
through the line A, B, of Fig. 2; and Fig. 4 is a strike board.
A, A, is the framing; B is a fly wheel; and D is the main spur wheel on the
main shaft 0; E, E, are jointed excentric rods for carrying a rectangular
frame G, which I term a piston; F, the main brace of the framing (connecting
A, A,) through which the excentric rods work; A' is the piston box, per-
manently fastened to the top of the stand A, A, by strong iron plates; H is the
half flask, in which the mould is formed; and T', T', are handles on the ends of
the flask for lifting the same; M, M, are caps, secured by hinges to the ends
of the piston box, so as to allow them to be thrown over the ends of the piston
box for holding sand when forming the bell and faucet ends of the pipes; O is
the main shaft; and a, a, are the excentrics; 1 is a screw or snail cani, the side
of which acting upon the lever K effects the depression of the pattern from the
mould, the sand being in the mean while retained by the rectangular piston
G, G; d is a cord passing over a pulley e, to which is attached a weight s,
which is to keep the lever K in contact with the screw cam I; 1 and 2 are
keys for securing the half flask to the frame of the machine while the moulding
operation is proceeding. There is a pawle which drops into the teeth of the
spur wheel D to prevent its turning in a wrong direction. In Fig. 1 the caps
M, M, are shewn as turned over to receive the sand, and in Fig. 2 they are
shown as thrown back and out of use. P, P, are trip rods or bearers, pivoted
at a, a, supporting the pattern T. These trip rods are connected together by
a rod S, which is jointed to the lever K, and receives an endway motion from
that lever, which motion by tripping up the rods P, P, causes the depression
of the pattern T from the sand mould. U is the gate for pouring the metal
into the mould.
The mode of operating the machine is as follows:-The caps M, M, having
been turned into the position shewn in Fig. 1, and the piston G with the
pattern T lowered in the piston box, sand is then thrown into the box, it being
cast well under the caps M, M, and ridged up with the strike, Fig. 4. The
surplus sand is next removed, and the caps are thrown back into the position

page_text: shewn at Fig. 2. The half flask.H is now secured by the keys 1 and 2 to the
piston box, and motion having been given to the main shaft O, the excentrics
a, a, will act, upon the rods E, E,.and cause the piston G and the pattern T to
rise and force up the sand contained in the box, and compress it in the half
flask. The continued rotation of the shaft O will cause the screw cam I to
release the weighted lever K, and the rods P, P, will then be tripped up by
the action of the sliding rod S, S. The pattern T will then by its own weight
drop below the top of the piston G, G, with a slight endway motion in con-
nection with the vertical one, without chipping or otherwise injuring the edge
of the sand mould. The flask is then released. by the withdrawal of the keys
.1and 2,and lifted, off the mould; by the handles T', T. It will be observed
that only one-half the numbers of half flasks will require a sprue or. grate U.
This improved machinery enables me to give the desirable firmness. of the sand
on the face and sparting of the mould, while. the central portion thereof preserves
the permeable characteristics, well understood as requisite in good founding.
Having now set forth the nature of the Invention of "improved machinery
for forming moulds for casting," as communicated to me by my foreign cor-
respondent, and explained the manner of carrying the same into effect, I wish
it to be understood, that under the above in part recited Letters Patent I claim,
the arrangement of the pattern and piston frame surrounding the pattern
within a chamber or piston box in. relation to the half; flask, operated in the
manner substantially as described, by which I am enabled to protrude the sand
into the half flask. from the said piston box or chamber and around the pattern,
and thus effect a compression of the sand at the parting instead of at the central
portion of the mould (as has heretofore been done) for the purpose of producing
more perfect castings.
In witness whereof, I, the said Alfred Vincent Newton, have hereunto
set my hand and seal, the Twentieth day of September, in the year
of our Lord One thousand eight hundred and fifty-five.
Witness,
J. W. MOFFATT,
66, Chancery Lane.
A. V. NEWTON. (L.S.)