IMPROVEMENTS IN PULLIES AND DRUMS
Year: 1884

page_text: We HENRY SIMON of St Peters Square Manchester in the County of Lancaster
and ARTHUR BRAMHAM PERKINS of The Forge, Bradford in the County of York
Ironmaster do hereby declare the nature of our Invention for "IMPROVEMENTS IN
PULLIES AND DRUMS " to be as follows:-
Our improvements relate to the manufacture of multiple curved rimmed wrought
iron or steel pullies, and consist in forming the rims of split or solid pullies with
two or more curves or convexities on the surface, so that two or more belts can be
run from the same pulley or drum without cutting or chafing the edges of the belts
whereby we dispense with the present method of employing pullies made with cast
iron rims, which are provided in the centre with a vertical flange for preventing
the belts from being chafed or cut.
The wrought iron or steel rims of split pullies are joined by means of wrought
iron or steel plates securely fastened by rivets or bolts and the usual spokes and
bosses are employed.
The improved pullies or drums are especially applicable for driving mules
employed in cotton and woollen manufactures and for driving roller mills.
Dated this 20th day of Janua

page_text: We, HENRY SIMON, of St Peters Square, Manchester, in the County of Lancaster,
and ARTHUR BRAMHAM PERKINS, of The Forge, Bradford, in the County of York,
Ironmaster, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN PULLIES AND DRUMS" and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
Our improvements relate to the manufacture of multiple curved rimmed
wrought iron or steel pulleys or drums and consist in forming the rims of split or
solid pulleys or drums with two or more curves or convexities on the surface so
that two or more belts can be run from the same pulley or drum without cutting
or chafing the edges of the belts, whereby we dispense with the present method of
employing pullies made with cast iron rims which are provided in the centre with
a vertical flange or partition for preventing the belts from being chafed or cut.
The wrought iron or steel rims of split pullies or drums are joined by means of
wrought iron or steel plates securely fastened by rivets or bolts and the usual
spokes and bosses are employed. The pullies or drums constructed upon our
improved principle are especially applicable for driving mules employed in cotton
and woollen manufactures and for driving roller mills.
In order that our Invention may be fully understood we will proceed to describe
the same by reference to the accompanying Drawing in which Figure 1, shows a
sectional elevation of a drum or pulley constructed according to our Invention with
two convexities on the rim for running two belts, one belt to each convexity.
Figure 2, is a side elevation of the pulley or drum shewn in Figure 1. Similar
letters in both Figures represent similar parts.
In the pulley or drum shewn in the Drawing the highest points of the convexities
of the rim are at AA and as a belt in running always has a tendency to work
itself onto the highest level of a curved rimmed drum it necessarily follows that
the two belts will have a tendency to work themselves up towards the centres A
and A respectively thus keeping apart the two edges of the belts and leaving clear
the flat space on the rim of the drum at. B, between the two convexities and to
which flat portion of the rim the spokes C, are rivetted or bolted.
Although we have shewn a pulley or drum with only two convexities we do not
confine ourselves to the use of two belts only as we can run any number of belts
that may be required by adding more convexities as more belts are used in which
case we leave a similar flat space to that shewn in Figure 1, at B, on the rim
between each convexity. D, is the boss into which the spokes of the pulley or
drum are fastened and E, is the shaft.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is:
Firstly. The construction of pulleys or drums for carrying two or more bolts
upon one rim without a separating flange or partition between each belt, each belt
being kept in position by the convexity upon which it runs, substantially as
described and represented in the accompanying Drawing.

page_text: Secondly. Constructing pulleys or drums to run two or more belts at the same
time and with only one set of spokes and one boss thereby saving weight and
expense, in manner substantially as described and represented in the accompanying
Drawing.