IMPROVEMENTS IN SPLIT OR SOLID GROOVED RIMMED WROUGHT IRON OR STEEL DRUMS FOR ROUND OR SQUARE ROPE BELTING FOR DRIVING PURPOSES as follows
Year: 1884

page_text: "
I Arthur Bramham PERKINS, of The Forge, Bradford, in the County of York,
Ironmaster and Engineer do hereby declare the nature of the said Invention for
IMPROVEMENTS IN SPLIT OR SOLID GROOVED RIMMED WROUGHT IRON OR STEEL
DRUMS FOR ROUND OR SQUARE ROPE BELTING FOR DRIVING PURPOSES
as follows:-
"
to be
My Invention relates to forming the rims of grooved drums for rope driving
purposes either of wrought iron or steel.
For this purpose sheets of wrought iron or steel are first rolled with the
necessary number of grooves or bent from flat sheets by means of corrugated
rollers, and the wrought iron or steel corrugated rims are secured on single spokes
if narrow rimined drums are employed, or if broad rims are employed, two or more
sets of spokes are fitted to them.
"
The spokes are by preference made of wrought iron or steel or of wrought iron
or steel tubes.
The spokes are rivetted to the top side of the corrugations.
The rims are joined together by rivetting or bolting the joint or by covering
plates fixed across the joint.

page_text: "
I ARTHUR BRAMHAM PERKINS, of The Forge, Bradford, in the County of York,
Ironmaster and Engineer do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SPLIT OR SOLID GROOVED RIMMED WROUGHT IRON OR STEEL
DRUMS FOR ROUND OR SQUARE ROPE BELTING FOR DRIVING PURPOSES " and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
My Invention relates to forming the rims of grooved drums for rope driving
- purposes either of wrought iron or steel in the manner hereinafter described. For
this purpose sheets of wrought iron or steel are first rolled with the necessary
number of grooves, or bent from flat sheets by means of corrugated rollers and the
wrought iron or steel corrugated rims are secured on single spokes if narrow
rimmed drums are employed, or if broad rims are employed two or more sets of
spokes are fitted to them.
The spokes are by preference made of wrought iron or steel or of wrought iron
or steel tubes, or of wrought iron or steel plates. The spokes are rivetted to the
top sides of the corrugations or to a web or flange at the inside of the rim.
The rims are joined together by rivetting or bolting the joints or by covering
plates fixed across the joints.
In order to enable my improvements to be fully understood I will proceed to
describe the same by reference to the accompanying Drawing in which Figure 1,
is an elevation in section of a pulley constructed to drive one round or square rope
according to my Invention. Figure 2, shows an elevation in section of a pulley
for driving one rope and having the plates which I may use instead of spokes
rivetted to the outer edge of the grooved rim. Figure 3, shows an elevation in
section of a multiple grooved pulley the rim of which is formed of sheet or plate
metal that is to say wrought iron or steel and containing four grooves for driving
four ropes. Figure 4, shows an elevation in section of a multiple grooved pulley
or drum of a modified construction in which each rope is carried or driven in
a separate grooved rim. Figure 5, shows a side elevation of one half of a single
or multiple grooved pulley constructed with spokes according to my Invention.
Figure 6, shows a side elevation of one fourth of a single or multiple grooved
pulley constructed with plates to take the place of spokes and rivetted to the inner
flange or web of the rim in the manner shown in Figure 1. Figure 7, shows a side
elevation of oue fourth of a single or multiple grooved pulley similar to that
shown in section at Figure 2.
In Figures 1, and 6, A, is the grooved iron or steel rim rolled with a flange or
web at B, to which the spokes or iron plates are rivetted at C. The plates which
I sometimes use in this construction of pulley instead of spokes are rivetted to
the boss of the pulley at D. The metal of which these plates are constructed may
be rolled taper so as to be thicker near the centre of the pulley and become
gradually thinner as they approach the rim or outer diameter, or they may be
ordinary parallel plates.
•
The plates are rivetted to covering plates or battens which hold the radial edges
of the plates firmly together, as shown in dotted lines in Figures 6, and 7. E, E,
show the rope which is being driven in section. G, is the shaft of the pulley,
L, L, are holes cut in the plates to allow of holding the rivets inside.
In Figures 2, and 7, the grooved rim A, of the pulley is rivetted at B, on its
outer sides to the plates which I may use instead of spokes. These plates may be
tapered as hereinbefore described when referring to Figure 1, and are rivetted

page_text: in & similar manner to covering plates or battens which serve to hold them together.
The boss of the pulley is cast with a hollow space at F, to facilitate the insertion
of the rivets. In the multiple grooved pulley or drum shewn in Figure 3, the
rim A, of the pulley is formed out of plates or sheets of wrought iron or steel
which are passed through grooved rollers to obtain the required corrugations and
are then passed through a set of bending rollers to give the necessary sweep or
curve to form the rim of the pulley; a sufficient number of these corrugated plates
or sheets are joined together at their ends by bolting, rivetting or welding in order
to produce the required circumference. J, J, represent a single row of spokes
securely fixed into the boss of the pulley or drum and joined to the rim of the
pulley or drum by rivetting or by means of nuts at H. The outer edge of the rim
is rivetted at B, to plates as herein before described when referring to Figure 2.
Although in the pulley shewn in Figure 3, I have shewn the pulley constructed
with four grooves for driving four ropes it will be obvious that a greater or less
number than four may be employed without departing from the principle of my
Invention. In the multiple grooved pulley shewn in Figure 4, each groove is
formed of a separate rolled bar or long narrow sheet of iron or steel. These
grooved bars or sheets are bent to the required curve and then rivetted together
at A, A, side by side as many as may be necessary to form the pulley. Five
grooves with five ropes are shown in the Drawing but any greater or less number
may be used and fixed together in the manner described. The rim of the pulley or
drum thus constructed is secured to the spokes or plates herein before described by
rivets at B, as described by reference to Figure 1.
In Figure 5, which shows a side elevation of one half of a single or multiple
pulley; A, is the rim of the pulley; H, H, the spokes and D, the boss.
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
Firstly. The construction of single or multiple grooved rope driving pulleys or
drums of sheets or plates of wrought iron or steel corrugated and bent to the
required form and attached to spokes or plates substantially in the manner described
and represented in the accompanying Drawing.
Secondly. Constructing the rims of multiple grooved rope driving pulleys or
drums by bolting or rivetting together side by side any required number of grooved
rims of wrought iron or steel substantially in the manner and for the purpose
described and illustrated in the accompanying Drawing.
day of July 180%.
ARTHUR BRAMHAM PERKINS.
Turner & Baker,
Agents for the Applicant.