Manufacture of the same.
Year: 1887

page_text: .
Manufacture of the same.
I, ARTHUR BRAMHAM PERKINS, of "The Forge," Thornton Road, Bradford, in the
county of York, Ironmaster, 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:-
This invention relates to improvements in that class of belt pulleys or drums in
which the boss and spokes are formed of cast iron, and the rim of wrought iron; and
to an improved method of manufacturing such pulleys.
To carry out my invention I cut off lengths or rectangular portions of iron plate
which are afterwards to form the palms or flanges at the ends of the spokes of the
pulley or drum.
Each of these plates is drilled or punched with suitable holes to receive the end of
the spoke also with rivet holes in which the rivets are placed which secure the rim to
the palms or flanges of the spokes. After being drilled or punched as described the
palms or flanges are bent to the required curve to fit inside the flange of the pulley or
drum.
The model for the spokes is placed in position in the sand in a moulding-box, and one
of the drilled or punched palnis or plates (each of which forms a segment of a circle)
is placed in the sand opposite each spoke so that the centre hole in the segmental plate
comes opposite the end of the spoke. These centre holes in the palms or flanges are
deeply countersunk on the outer side. The model is withdrawn and the metal being
poured into the mould flows through the centre holes in the palms or flanges and filling
up the countersinking of the holes thereby unites the palms or flanges firmly to the
spokes to the pulley or drum.
When the palms or flanges are thus united to the spokes, their outer surface is trued
up by grinding or otherwise, and the rim is placed in position and riveted to them in
the ordinary manner.
In order to enable my invention to be fully understood I will proceed to describe
the same with reference to the accompanying drawings in which figure 1 represents a
moulding-box in which the model of the spokes and boss is placed in position, and the

page_text: palms or flanges at the end of the spokes, in the manner herein before described;
figure 2 represents the complete pulley in which the rim is riveted upon the outside of
the palms or flanges.
The moulding box is represented at A and the spokes of the model and of the pulley
or drum at B, the palms or flanges at C, and the cast iron rivet or connection by
means of which the spokes are connected or fixed to the palms or flanges, in the manner
described, at E. The outer wrought iron rim is represented at D and is attached to
the palms or flanges on the ends of the spokes by rivetting in the usual manner.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
1. The method of attaching or fixing the palms or flanges to the ends of the spokes
of pulleys or drums by running molten metal into a hole or holes formed in such palms
or flanges at the time of casting the spokes and boss in the manner described.
2. The improved pulley or drum consisting of the spokes B, combined with the
palms or flanges C, rivetted to the rim D, all substantially as described and represented
in the accompanying drawings.