Improvements in Lubricating Apparatus for Pulley Journals, Shafts, and the like.
Year: 1888

page_text: Date of Application, 29th Nov., 1888
Complete Specification Left, 27th Apr., 1889-Accepted, 22nd June, 1889
PROVISIONAL SPECIFICATION.
Improvements in Lubricating Apparatus for Pulley Journals, Shafts,
and the like.
I, JOHN DURIE, of Dunloe Villa, Tranent, in the County of Haddington, North
Britain, Coalmaster, do hereby declare the nature of this Invention to be as follows,
that is to say :-
.
My said Invention has for its object, by means of improved apparatus to economise
labor and lubricants, and to ensure prolonged efficiency, in the lubrication of the
journals of pulleys, rotating shafts, and the like. A simple modification of my
improved apparatus is advantageously applicable to the pulleys used in underground
haulage, and to other pulleys in situations in which they are liable to be clogged with
dust.
、
In carrying out my Invention the bearing block for each journal of a pulley is
provided with a cavity or reservoir below the journal to hold oil or other fluid
lubricant, and a disk is fixed on the journal so as to have its lower part in the
lubricant. The sides of the cavity or reservoir are continued above the top of the
disk and a cover is by preference provided to completely close in the space. The
cavity or reservoir may be made at the middle of the bearing or at one end, or there
The rotation of the
may be a cavity or reservoir at each end of the bearing.
journal causes the disc to become coated with the lubricant which runs from the
parts of the disk which successively become uppermost, down to and between the
bearing surfaces, and this action may be facilitated by shaping the disk with an
inclined or curved surface on one or each side. If the velocity is so great as by
centrifugal force to make the lubricant flow outwards on the disk-then if the
rotation is intermittent the lubricant will flow from the disk in between the bearing
surfaces during the intervals of rest. Or one or more passages or grooves of a
spiral or curved form may be formed on the side of the disk nearest the journal
when the disk is at one end of the journal, or on both sides when the disk is in
a space at the middle of the journal. If the pulley always rotates in one direction
a spiral groove or passage with its outer part in advance in the direction of
rotation will take up the lubricant and lead it towards the centre, that is towards
the journal. If the pulley rotates sometimes in one direction and sometimes in the
other it may have reversely disposed spiral grooves or passages or equivalent
depressions formed in it, to act in either direction.
The bearing block may be provided with a cup or cups to receive lubricant
dripping from the ends of the bearing surfaces away from the reservoir, and one
or more passages or pipes may be provided to lead the lubricant from the cup or cups
back to the reservoir, a filtering medium being, by preference, interposed to purity
the returning lubricant.
COMPLETE SPECIFICATION.
Improvements in Lubricating Apparatus for Pulley Journals, Shafts,
and the like.
I, JOHN DURIE, of Dunloe Villa, Tranent, in the County of Haddington, North
Britain, Coalmaster, 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:
My said Invention has for its object, by means of improved apparatus, to economise

page_text: labor and lubricants, to diminish wear, and to ensure prolonged efficiency, in the
lubrication of the journals of. pulleys, rotating shafts, and the like. A simple
modification of my improved apparatus is advantageously applicable to the pulleys
used in underground haulage, and to other pulleys in situations in which they are
liable to be clogged with dust.
I hereunto append a sheet of explanatory drawings on which are delineated
examples of my improved apparatus. Figs. 1, 2, and 3, are a plan, longitudinal
vertical section, and end elevation of one modification; and a second modification is
shown in vertical section and end elevation in figures, 4, and 5, Figures, 6, 7, and 8,
are enlarged sectional views showing variations in details; and figure, 9, is an
enlarged vertical section of a modification in which provision is made for circulating
the lubricant. In these drawings the same reference letters are used to mark the
same or like parts wherever they are repeated.
In carrying out my Invention according to the modification shown in figures, 1, 2,
and 3, the bearing block, A, for each journal, B, of the pulley, C, is provided with a
cavity or reservoir, D, below the outer part of the journal, to hold oil or other fluid
lubricant; and a disk, E, is fixed on each journal, B, so as to have its lower part in
the lubricant. The sides of the cavity or reservoir, D, are continued above the top of
the disk, E, and a cover, F, is provided to completely close in the space, this cover, F.
being made in one piece with the bearing cap, G, or part which forms the upper half
of the bearing. In the example shown in figures, 1, 2, and 3, the two bearing
blocks, A, are cast in one piece with a sole, H, the arrangement being of a kind
suitable for the bottom of a mine roadway.
The modification shown in figures, 4, and 5, is suitable for being fixed to the roof of
a mine roadway, for guiding a hauling rope or chain; and the bearing blocks, A,
are cast upon the lower end of brackets, J, which are cast in the same piece with a
top plate, K, which is fixed to a roof beam or other support. The lubricating details
of this example might be made exactly like those of the example shown in figures, 1, 2,
and 3, hereinbefore described; they are however shown as made according to a
modification which is also applicable for pulleys to be fixed in various positions. The
cavity or reservoir, D, is made at the middle of the bearing instead of at the outer
end as in the first example; and if found desirable in any case there may be formed a
cavity or reservoir, D, for lubricant at each end of each bearing.
In this improved lubricating apparatus the rotation of the journal, D, causes the
disk, E, to become coated with the lubricant which runs from the parts of the disk
which successively become uppermost, down to and in between the bearing surfaces;
and this action may be facilitated by shaping the disk with an inclined surface on one
side as shown in figure, 6, or on each side when the disk is in the middle of a bearing
as shown in figure, 4.
If the velocity is so great as by centrifugal force to make the lubricant flow
outwards on the disk, E, then if the rotation is intermittent the lubricant will flow
from the disc in between the bearing surfaces during the intervals of rest. Or one or
more passages or grooves, L, of a spiral or curved form may be formed on the disk, E,
as shown in figure, 7, on the side nearest the journal when the disk is at one end of
the journal, or on both sides when the disk is in a space at the middle of the journal,
as shown in figure, 4. If the pulley always rotates in one direction a spiral groove or
passage, L, with its outer part in advance in the direction of rotation will take up the
lubricant and lead it towards the centre, that is, towards the journal. If the pulley
rotates sometimes in one direction and sometimes in the other it may have reversely
disposed grooves or passages, M or equivalent depressions formed in it as shown in
figure, 8, to act in either direction.
The bearing block, A, may as shown in figure, 9, be provided with a cup, N, to
receive lubricant dripping from the end of the bearing surfaces away from the
reservoir, D, and a passage, P, may be provided to lead the lubricant from the cup, N,
back to the reservoir, D, a filtering medium, Q, being by preference interposed to
purify the returning lubricant. The filtering medium, Q, may be placed in an
enlargement of the passage, P, to which access is got by a plugged side hole.

page_text: 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
1 claim is :-
1. The improved lubricating apparatus for pulley journals, shafts, and the like, and
comprising one or more cavities or reservoirs for lubricant for each journal one or
more disks on each journal and dipping into the lubricant, and with or without a
cover enclosing the said parts substantially as hereinbefore described.
2. In lubricating apparatus for pulley journals, shafts, and the like, of the kind
herein before described, providing a cup, passage and filtering medium to catch, purify,
and return the lubricant substantially as hereinbefore described with reference to
figure, 9, of the accompanying drawings.
Dated this Twenty-sixth day of April 1889.
EDMUND HUNT,
Applicant's Agent.