Improvements in and connected with Pulleys.
Year: 1895

page_text: Date of Application, 2nd Apr., 1895-Accepted. 4th May, 1895
COMPLETE SPECIFICATION.
Improvements in and connected with Pulleys.
A communication from abroad by EDWARD WALLER STONEY, of the Madras
Railway, Madras, India, Civil Engineer.
I, FRANCIS GOULD MORONY STONEY, of the Waterside Iron Works, Ipswich,
in the County of Suffolk, Engineer, 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, that is to say :-
This invention comprises an improved construction of pulley and parts for
carrying the same, a pulley made with the improvements being noiseless and self-
lubricating and advantageously applicable for guiding punkah-working ropes and
for other like purposes.
On an accompanying sheet of explanatory drawings, Figure, 1, is an elevation,
and Figure, 2, is a sectional elevation as at right angles to Figure; 1.
The pulley is made with a grooved rim, A, for the rope, and this rim is
connected by arms, B, to an elongated boss, C, which is fitted to rotate upon a pin
or axle, D, fixed by one end in a bracket, E. Between the rim, A, and boss, C,
the pulley has formed on its sides conical flanges, F, which enclose an internal
space designed to contain lubricating oil. The conical flange, F, at one side of the
pulley has its central opening closed by an enlargement, G, formed on the boss in
which the pin or axle, D, is fixed to the bracket, E; and similarly the conical
flange, F, at the other side of the pulley has its central opening closed by an
enlargement, H, on a boss, J, fixed on the outer end of the pin or axle, D. The
conical flanges, F, do not fit so closely to the enlargements, G, H, as to cause any
friction. The outer boss, J, which can be adjusted upon the pin or axle, D, so as
to make up for wear on the ends of the pulley boss, C, is formed with a curved
arm K, which acts as a guide or guard for the rope, and which can be fixed in any
position on the pin or axle, D. The bracket, E, which carries the pulley may be
fixed down upon or up to a horizontal surface or to a vertical or inclined surface.
A suitable quantity of oil being introduced, through a screw-plug opening
or otherwise into the interval space enclosed by the conical flanges, F, tends
to descend to the lower part of the space, but is continually carried round by
the rotation of the pulley and finds its way to the bearing surfaces of the pulley
boss, C, and pin or axle, D, one or more holes being made in the boss if required.
With the conical form of the flanges, F, as shown in Figure, 2, the centrifugal
force due to the rotation makes the oil flow away from the lateral openings of
small diameter to the parts of the internal space of larger diameter; and in
consequence of this action there is no tendency to leakage and waste of oil.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
The improved construction of pulley and parts connected therewith sub-
stantially as herein before described and as shown in the accompanying drawings.
Dated this First day of April 1895.
EDMUND HUNT,
Applicant's Agent.