AN IMPROVED APPARATUS FOR MOULDING THE MOULDS OF WHEELS, PULLEYS, AND CIRCULAR AND SEGMENTAL WORKS IN GREEN SAND WITHOUT PATTERNS
Year: 1866

page_text: 'PROVISIONAL SPECIFICATION left by Jacob Goodfellow at the Office of
the Commissioners of Patents, with his Petition, on the 19th December
1866.
I, JACOB GOODFELLOW, of Blackburn, in the County of Lancaster, Engineer,
do hereby declare the nature of the said Invention for "AN IMPROVED
APPARATUS FOR MOULDING THE MOULDS OF WHEELS, PULLEYS, AND CIRCULAR AND
SEGMENTAL WORKS IN GREEN SAND WITHOUT PATTERNS," to be as follows:-
The first part of this Invention relates to the moulding boxes, and consists
in forming in each half box a conical or taper hole, and employing the holes
in both halves of the box as bearings for the post or frame which carries the
ordinary strickle used for strickling in green sand, the moulds for the rims
and outer surfaces of the wheels or other articles, which arrangement enables
the post to find its centre and have a firm bearing without loss of time, and
when the moulds are completed and the half boxes are to be put together, I
place in the hole of the lower half box a conical plug at the lower end of a
rod, carrying at the top a loose cone, and place between the cones a spiral
spring, so that when the hole of the upper half box is placed on the upper
cone the two parts of the box will be firmly held central with each other, and
the ordinary pins or holders at the corners of the boxes are dispensed with.
The second part of this Invention consists in an improved universal core
box for making green sand cores for parts of toothed wheels, pulleys, and
circular and segmental castings of various sizes without requiring the ordinary

page_text: core boxes for each article. I employ a circular or segmental plate of wood
or metal placed in a horizontal position, and having a true surface for
forming the bottom of the core box, and bore in this plate a number of holes,
in either of which is placed a stud carrying a centre block having flanges
near the top and bottom, in which flanges there are circular slots to which
-are-jointed the sides of the core box, the slots being for the purpose of regu-
lating the positions of the sides according to the required thickness of the
arms, and on the bottom plate and against the sides I place pieces or strickles
of wood or metal corresponding in shape with the required flanges, mouldings,
and boss of the wheel or article, and at the top of the centre block there is a
central pin on which is placed an ordinary strickle for strickling the outer
curve of the core. The different holes in the horizontal plate are to adapt
the core box for different diameters of wheels and curved articles, and the
sides are moveable for enabling them to be placed and held at any angle
according to the numbers of arms in the wheels or angle of the required core;
thus when the stud of the centre block is in one hole, and the sides adjusted
for six arms, and the strickle pieces properly placed, the green sand is put into
the box and rammed up, and then the sides are loosened and the core removed,
and so on for six cores, but when a smaller wheel is required with four arms
the centre block is shifted to another hole and the sides adjusted for four arms,
and so on for large and small wheels having any numbers of arms, and as the
cores for the wheels and curved articles are made of green sand and the
ordinary core boxes dispensed with there is great economy of labour and
material.