Improvements in the Lubrication of Pulleys, Wheels, Axles, and Journal Bearings.
Year: 1894

page_text: Date of Application, 29th Oct., 1894
Complete Specification Left, 22nd July, 1895-Accepted, 24th Aug., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Lubrication of Pulleys, Wheels, Axles, and
Journal Bearings.
I, WILLIAM HENRY CRANSTONE, of The Phoenix Foundry and Engineering
Works, Hemel Hempstead, in the County of Hertford, Engineer, do hereby declare
the nature of my said invention to be as follows:-
This invention has for its object the more effectual lubrication of pulleys, wheels,
and the like rotating on a shaft, axle, or fixed stud; also applicable to axle boxes,
pedestals, and other journal bearings, and analogous appliances.
The invention, as applied to what is generally known as a gin or cargo pulley,
consists in forming an internal recess or annular groove in the boss or hub of the
pulley. The boss or hub is also bored to receive a bush or liner, having an
internal bore to receive the shaft or spindle on which the pulley has to rotate.
A slot is formed in this bush of the same width as and in line with the annular
groove in the hub. Radially in this slot and extending to the outer circumference
of the annular groove, is placed a tongue, the outer end being cut to an angle on
each side. From these angles small holes are formed, leading to the base of the
tongue, and thereby communicating with the shaft or spindle.
The annular groove is for the purpose of forming a reservoir for the reception
of solidified oil, grease, or other lubricant, which is inserted by means of an opening
fitted with a screw-plug.
The mode of operation is such that, in case the spindle becomes dry from lack
of lubrication, the pulley will begin to revolve on the bush, by which means thé
lubricant will be forced through the tongue on to the spindle, the effect of which
will be that the bush will resume its rotation with the pulley, and all further
admission of lubricant will be stopped until a renewed supply is required.
Dated 20th October 1901
COMPLETE SPECIFICATION.
Improvements in the Lubrication of Pulleys, Wheels, Axles, and
Journal Bearings.
I, WILLIAM HENRY CRANSTONE, of The Phoenix Foundry and Engineering
Works, Hemel Hempstead, in the County of Hertford, Engineer, do hereby
declare the nature of my said 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 has for its object the more effectual lubrication of pulloys, wheels,
and the like, rotating on a shaft, axle, or fixed stud; also applicable to axle boxes,
pedestals, and other journal bearings, and analogous appliances.
The invention, as applied to what is generally known as a gin or cargo pulley,
consists in forming an internal recess or annular groove in the boss or hub of the
CD1

page_text: pulley. The boss or hub is also bored to receive a bush or liner, having an internal
A slot is
bore to receive the shaft or spindle on which the pulley has to rotate.
formed in this bush of the same width as and in line with the annular groove in the
hub. Radially in this slot, and extending to the outer circumference of the
annular groove, is placed a tongue, the outer end being cut to an angle on each side.
From these angles small holes are formed, leading to the base of the tongue, and
thereby communicating with the shaft or spindle.
The annular groove is for the purpose of forming a reservoir for the reception of
solidified oil, grease, or other lubricant, which is inserted by means of an opening
fitted with a screw-plug.
The mode of operation is such that, in case the spindle becomes dry from lack of
lubrication, the pulley will begin to revolve on the bush, by which means the
lubricant will be forced through the tongue on to the spindle, the effect of which
will be that the bush will resume its rotation with the pulley, and all further
admission of lubricant will be stopped until a renewed supply is required.
And in order that my said invention may be particularly described and
ascertained, reference is hereby made to the accompanying drawings, in which
similar figures of reference indicate corresponding parts.
Fig. 1 is a transverse section, showing the application of my invention to a
gin pulley.
Fig. 2 is a sectional elevation of a belt pulley.
Fig. 3 is an elevation and Fig. 4 a section, showing the application of my
invention to a shaft bearing.
Referring to Figs. 1 and 2: 5 is the boss of the pulley. 6 is the annular groove
formed in the boss for containing the lubricant. 7 is the bush or liner. The brass
bush is made a working fit on the spindle or pin, so that they may revolve
separately or together, as required. 8 is a tongue, which is fitted in a slot cut in
the brass bush, the base of the tongue being in contact with the spindle. The
outer end of the tongue is cut to an angle of 45 degrees or thereabouts on each side,
and a small hole 9 is drilled on each side, leading from the angular faces to the
base of the tongue.
While the contact surfaces of the bush 7 and the spindle are properly lubricated,
the boss 5 and the liner 7 revolve together, carrying round the tongue 8 and the
annular supply of lubricant in the groove 6.
But in case of a lack of lubricant
between the bush and the spindle, the bush will be retarded and the pulley will
revolve on the bush. The lubricant is thereby pressed against one side of the tongue
with sufficient pressure to drive some of the lubricant through one of the holes 9,
whereby it gains access to the spindle, and thus automatically causes the bush to
revolve upon the spindle.
In applying my invention to wooden split pulleys, I fit an outer cast iron bush,
and form the groove or recess therein, the wood pulley being secured to the iron
bush in the usual manner. A brass liner is fitted to the cast iron bush, as above
described.
11 is a
Referring to Figs. 3 and 4: 10 is an axle revolving in brasses 7. The annular
groove 6 is formed in the carriage and keep, as shown.
screw plug
opening for the insertion of the lubricant. In case of a lack of lubricant between
the brasses and the axle 10, the brasses are carried round, and the tongue,
revolving with the brasses, causes the lubricant to pass through the passage 9 to
the axle, in a similar manner to that above described iu relation to pulleys.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improvements in the lubrication of pulleys, wheels, axles, and journal
bearings, substantially as and for the purposes herein before described and illustrated
by the drawings.
2. In a self-lubricating bearing, the combination of an annular chamber

page_text: surrounding the brass or other brush; a perforated tongue standing in a slot
made through the bush and extending across the chamber containing the lubricant ;
severally arranged so that the brass or bush may remain stationary or be retarded
when the lubrication of the spindle is deficient, substantially as and for the purposes
herein before described and illustrated by Figs. 1 and 2 of the drawings.
3. In a self-lubricating bearing, the combination of an annular chamber
surrounding the brasses or other bush; a perforated tongue standing in a slot
made through the brass and extending across the chamber containing the
lubricant; severally arranged so that the brass or brasses may be carried round
with the shaft when the lubrication of the latter is deficient, substantially as and
for the purposes herein before described and illustrated by the drawings.
GEO.
DOWNING,
8 Quality Court, London, W.C., Agent.