Improvements in Apparatus for Making Moulds for Casting.
Year: 1892

page_text: Date of Application, 16th Sept., 1892
Complete Specification Left, 13th June, 1893-Accepted, 22nd July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Making Moulds for Casting.
We, STEPHEN ALLEY, and JOHN ALEXANDER MACLELLAN, of Sentinel
Works, Polmadie, in the County of Renfrew, North Britain, Engineers, do hereby
declare the nature of this invention to be as follows, that is to say :-
Our said invention has for its object to improve the construction of apparatus for
making castings of large size and having certain peculiarities such as inclined flanges
and the like, our improved apparatus being advantageously applicable for moulding
flanged segmental plates for subways or tunnels.
In carrying out our invention we provide a box upon which is temporarily
secured the flask in which a half mould is to be formed, this box having at one
side or end of it two or more brackets hinged to fixed standards, in a manner to
allow of the box and flask being turned completely over for the purpose of depositing
the flask with the mould in it upon a truck or carriage. The turning over is
effected by means of hoisting apparatus a chain from which is connected to a
swivelling shackle at the side or end of the box furthest from the hinges.
For the flask in which the flanges of a segmental plate are to be moulded, the
box is fitted with sliders adapted to the inclinations of the flanges, and having fixed
to them patterns for the flanges, which patterns can be changed for moulding
flanges of different sizes or forms. The sliders are arranged in guides within the
box and are movable out and in by means of rack-and-pinion or other suitable gearing
workable by means of external handwheels.
In the case of very large sizes the sand is to be filled in and rammed by hand;
but for smaller sizes any suitable known mechanical ramming apparatus may be
used.
When the flask has been rammed it and the box are turned over together, before
withdrawing the flange patterns, which prevents the turning-over operation from
disturbing the mould; and when the flask has been deposited on the truck or
carriage, the flange patterns are withdrawn and then the box is disconnected from
the flask and is turned over back again.
The flask is connected to the box by shackles which are jointed to rods passing
through lugs on the box and which are adjusted by means of easily handled disk
nuts on the ends of the rods, whilst springs are applied between the lugs and shoulders
on the rods to keep the rods from dropping when the shackles are disconnected
from the studs of the flask.
Dated this Fifteenth day of September 1891.
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Making Moulds for Casting.
We, STEPHEN ALLEY, and JOHN ALEXANDER MACLELLAN, of Sentinel
Works, Polmadie, in the County of Renfrew, North Britain, Engineers, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say :-
Our said invention has for its object to improve the construction of apparatus for
making castings of large size and having certain peculiarities such as inclined
flanges and the like, our improved apparatus being advantageously applicable for
moulding flanged segmental plates for subways or tunnels.

page_text: In carrying out our invention we provide a box upon which is temporarily
secured the flask in which a half mould is to be formed, this box having at one side
or end of it two or more brackets hinged to fixed standards, in a manner to allow of
the box and flask being turned completely over for the purpose of depositing the flask
with the mould in it upon a truck or carriage. The turning over is effected by
means of hoisting apparatus a chain from which is connected to a swivelling shackle
at the side or end of the box furthest from the hinges.
For the flask in which the flanges of a segmental plate are to be moulded, the
box is fitted with sliders adapted to the inclinations of the flanges and having fixed
to them patterns for the flanges, which patterns can be changed for moulding flanges
of different sizes or forms. The sliders are arranged in guides within the box and
are movable out and in by means of rack-and-pinion or other suitable gearing
workable by means of external handwheels.
In the case of large sizes for which the apparatus is specially designed the sand
is to be filled in and rammed by hand.
When the flask has been rammed it and the box are turned over together, before
withdrawing the flange patterns, which prevents the turning-over operation from
disturbing the mould; and when the flask has been deposited on the truck or
carriage, the flange patterns are withdrawn and then the box is disconnected from
the flask and is turned over back again.
The flask is connected to the box by shackles which are jointed to rods passing
through lugs on the box and which are adjusted by means of easily handled disk
nuts on the ends of the rods, whilst springs are applied between the lugs and
shoulders on the rods to keep the rods from dropping when the shackles are dis-
connected from the studs of the flask.
Apparatus embodying our improvements is delineated on the accompanying
four sheets of explanatory drawings of which Figure, 1, is a side, Figure, 2, an end
elevation and Figures, 3, and, 4, transverse vertical sections as at right angles to
each other. In these drawings the same reference letters and numerals are used to
mark the same or like parts wherever they are repeated..
The flask, A, in which a half mould is to be formed is temporarily secured to a
castiron box, B, of a rectangular form. On one side of the box, B, there are formed
brackets, C, hinged to fixed standards, D, in a manner to allow of the box and the
flask, A, being turned completely over this being effected when desired by hoisting
apparatus, (not shown) a chain from which is connected to a swivelling shackle, E,
attached to the opposite side of the box from the brackets.
The flask, A, is connected to the box, B, by shackles, F, which engage with
studs, F1, fixed in bosses, F 2, in the ends of the box. The shackles, F, are jointed
to rods, G, passing through lugs, G 1, on the box, and the rods are adjustable by
means of disk nuts, G 2, screwed on their ends. Springs, H, are applied between
the shoulders, H 1, of the rods, G, and the outer part of a wooden bed piece, J, fixed
on the top of the box, B, through which the rods pass before going through the
lugs, G 1, so as to keep the rods from dropping when the shackles, F, are
disconnected from the studs, F 1, of the flask.
For the flask, A, in which the flanges and inner side of a segmental plate are to be
moulded there are fitted at the sides and ends of the box, B, sliders, K, L, M, N,
adapted to the inclinations of the flanges to be moulded and to which the flange
patterns are fixed. As the several sliders, K, L, M, N, act similarly and are acted
on by similar gearing it will suffice to particularly describe one of them. The
slider, K, for one of the ends of the box, B, is arranged in guides, K 1, and moves
out or in, when an external hand wheel, K 2, is turned. This handwheel, K 2, is
keyed on to a shaft, K 3, carried by an internal bearing, K 4, and an external
bearing, K 5, and on the shaft a worm, K 6, is fixed.
The worm, K 6, gears with a worm wheel, K 7, carried by a shaft, K 8, working
in internal bearings, K. 9, formed on the end of the box, B; and on this shaft, K 8,
two pinions, P, P1, are keyed gearing respectively with racks, P 2, P 3, fixed to
the slider, K. When the handwheel, K 2, is turned the pinions cause the slider to

page_text: worm,
move out or in. In a similar way the slider, L, is moved when the external
handwheel, L 1, is turned. When the external handwheels, M 1, M 2, are turned
the slider, M, for one of the sides of the box, B, is moved out or in by means of the
M 3, the worm-wheel, M 4, and pinions, M5, M6, which pinions act on the
In a similar way
racks, M 7, M 8, fixed to the slider and cause it to move.
the slider, N, is moved out or in when the external handwheels, N 1, N 2, are turned.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
Improved apparatus for making hand-rammed moulds for castings, comprising a
box hinged to fixed standards and to which can be attached the flask for a half
mould the said box being fitted with sliders actuated by gearing workable by hand-
wheels and being arranged so that it and its contents can be turned over with the
flask having the half mould formed in it in order that parts of the pattern may
be withdrawn after instead of before the turning over, substantially as hereinbefore
described.
This Twelfth day of June 1893.
EDMUND HUNT,
Applicants' Agent.