A New and Improved Self-lubricating Sheave, with either Solid, Ball Bearing, or Roller Bearing Bush.
Year: 1896

page_text: Date of Application, 3rd Sept., 1895
Complete Specification Left, 22nd Dec., 1896-Accepted, 6th Feb., 1897
PROVISIONAL SPECIFICATION.
A New and Improved Self-lubricating Sheave, with either Solid,
Ball Bearing, or Roller Bearing Bush.
We AARON SWINBURN No. 2 Bath Street Grimsby, Blockmaker, and WILLIAM
SWINBURN, No. 274 Cleethorpes Road Grimsby, Wood Turner, do hereby declare
the nature of this invention to be as follows:-
To secure perfect efficiency in our new and improved self lubricating sheave and
bush for the use of ships pulley blocks, gins, derrick wheels, and wheels of all
descriptions, we propose to make the sheave of steel, iron, brass or of any other
suitable metal.
The sheave on the outside to be made straight, and internally to be made hollow,
thus forming an internal reservoir for containing the oil for self lubrication, and
preventing the sheave and bush from corroding or rusting and causing them to
always work freely.
The outlet of oil from the internal reservoir, in the sheave, to the bush, pin, or
bearing, to be supplied by means of a circular ring of leather, or any other
suitable material. The circular ring to be inserted in a groove in the centre of
the inner circle of the sheave thus connecting-and conveying the oil from-the
entombed reservoir to the bush, or bearings of whatever kind.
The bush or bearing of sheave to be made of steel, iron, brass, or any other
suitable metal, and of any suitable size to admit of either a round, square or
otherwise shaped pin or shaft.
The said pin or shaft to be made fast in the bush, which remains stationary,
causing the sheave to revolve by means of solid, ball, or roller bearings, round the
bush, thus causing a greater circle of bearing than would be possible upon a small
shaft or pin only.
The outer circle of bush to be left flat to admit of small rollers or other bearings.
In the event of ball bearings being used, the bush to be split into two halves to
enable the balls to be inserted in a centre groove or cone, between the outer edge
of bush and inner circle of sheave. On each side of sheave a thin circular plate
to be inserted, covering over the bush to prevent the inlet of water or dirt.
Dated this 2nd day of September 1896.
AARON SWINBURN.
W. SWINBURN.
A New and Improved Self-lubricating Sheave, with either Solid,
Ball Bearing, or Roller Bearing Bush.
We AARON SWINBURN of 2 Bath Street, and WILLIAM SWINBURN of
274 Cleethorpe Road, both in Grimsby, in the County of Liccoln, Blockmaker
and Wood Turner respectively, 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:-
Our invention relates to a new or improved self lubricating sheave for the use of

page_text: ships, pulley-blocks, gins, derrick, or crane chain wheels, and all other purposes
of a like or analogous nature.
For the purposes of our invention we provide a compound bush of any suitable
metal or combination of metals, the said bush having a central bore or aperture
for the reception of a rectangular or polygonal spindle, a suitable race or races
being provided upon the periphery, or between the sections of the said bush, or
both, for the reception of a row or rows of balls or rollers, which form bearings
between the said compound bush, and the outer or active portion of the sheave,
suitable reservoirs or chambers being provided within the said compound bush or
the sheave for containing oil or other lubricant, suitable connections being provided
communicating with the said reservoirs and the before mentioned balls or rollers,
by the means of which the said balls or rollers may be automatically continuously
lubricated, without waste of lubricant, and by these means friction between one
wearing part and another is reduced to a minimum, which is the object and purpose
of our invention.
We have found in practice, that a very wide range of mechanical means is open
to us by which the principle of our invention may be carried into effect, but in
the accompanying two sheets of drawings we have contented ourselves by showing
three distinct methods only which we fully believe will suffice to make the
principle of our invention perfectly clear, but we wish it understood that we do
not confine ourselves to the means shewn, but may employ any reasonable
modification of these or any desired combination of the same, withont departing
from the principle involved.
Fig. 1 Sheet 1 is a side elevation of our improved sheave according to one
method of construction, the right hand half of which shows one portion of the bush
removed, or the portion in section.
Fig. 2 Sheet 2 is a central vertical section of Fig. 1.
Fig. 3 Sheet 2 is a sectional elevation of our improved sheave according to a
second method of construction.
Fig. 4 Sheet 1 is a central vertical section of Fig. 3.
Fig. 5 Sheet 1 is a view similar to Fig. 1 but relating to a third method of
carrying our invention into effect.
Fig. 6 Sheet 2 is a central vertical section of Fig. 5.
Similar letters of reference are used to indicate the same or like parts.
Referring to Figs. 1 and 2. According to this method of construction, we cast
or otherwise produce of any suitable metal or alloy of metals, a circular compound
bush composed of preferably two similar portions A and B, in which suitable
apertures or recesses C are formed, which may be equally divided between A and B
as shewn in Fig. 2, or wholly in one or the other as may be desired. The two
portions A and B are so formed at their axial centres as to collectively provided
a rectangular or polygonal opening D, for the reception of a like shaped stationary
spindle. A portion of the outer periphery of both A and B is removed so that
they collectively form a groove E while a portion of the inner face of both is
removed to form an annular space between them which we cause to be occupied by
a leather or other absorbant ring F, retained in position when A and B are
connected by screws a as shewn at the left of Fig. 1.
In this arrangement the outer or wearing surface of the sheave is composed of
a ring of hard wood G, preferably lignum vitæ rendered concave upon its outer
surface, this being retained between two metallic rings H H' so formed, that when
placed together and connected by any number of screws or bolts such as 6 (which
may also engage with G,) the inner periphery of HH' provides an annular
rectangular groove E, which we cause to be occupied by any number of steel or
other rollers J which provide bearings by means of which H H and G may freely
revolve around the compound bush A B.
Before connecting A and B together the chambers C would be charged with the
lubricant to be used, and this percolating through the absorbant ring F, would

page_text: automatically lubricate the rollers J, and one charge of this would last for many
mouths.
In Figs. 3 and 4 we illustrate another or alternate method of carrying our
invention into effect. In this arrangement the two halves A, B, of the bush are
preferably dissimilar in cross section, as shewn at Fig. 4, and are so arranged as
to be connected together by screws or boits c, first passing through the section A
(Fig. 4) and engaging with holes c¹ in B (Fig. 3) the outer peripheries of A and B
being so formed as to collectively provide a semi-circular groove d (Fig 3).
According to this method the outer or wearing surface of the sheave is composed
of two metallic rings K and K' connected together by bolts or screws e, which
may first pass through holes in K and engage with holes in lugs upon the
portion K (Fig. 3) or vice versa. The rings K K are so formed internally as to
provide chambers or lubricant reservoirs C, and upon their inner periphery
a semicircular groove d' (Fig. 3), and at suitable intervals in Kor K, or both,
channels or passages 9 are provided communicating with C and d', which may be
open or filled with leather or other absorbant strips as desired.
The approximately circular groove formed by the grooves d and d¹ we cause
to be occupied by a row of steel or other balls L, which provide bearings by means
of which K and K₁ may freely revolve around the compound bush A. B. The
chamber C having been charged with the lubricant in use this would percolate
through the channels g or the absorbant material therein and so automatically
lubricate the balls L.
In Figs. 5 and 6 we illustrate a third manner of arranging our invention.
According to this method the two halves A and B of the bush have a preferably
uneven or irregular junction (Fig. 6) and so constructed as to provide a chamber
or lubricant reservoir C, and arranged to be connected by any number of bolts or
screws passing through A and engaging with holes in lugs on B (Fig. 5) or
vice versa, or both, the outer peripheries of A and B being so formed as to
collectively provide a broad groove k. According to this arrangement the wearing
surface M of the sheave is entire and provided internally with an annular chamber
or oil reservoir C¹, the inner periphery of M being connected by any number of
screws or bolts m to a pair of metallic rings N and N', the screws or bolts m also
serving to keep these in close contact with each other. The inner peripheries of
the two rings N and N₁ are each provided with a semicircular groove, and between
these and the groove k formed in A and B, we place two rows of steel or other
balls L and L, which provide bearings for the rings N N', so that these and M,
to which they are firmly connected, may freely revolve around A and B. The
chambers C and C are for containing a lubricant, and passages may be provided
between either or both of these and the ball races R, as suggested by p in Fig. 6
and s in Fig. 5, either or both of which may be filled by a strip of leather or the
like or left open as desired.
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 :-
1st. In an improved sheave the use and application of a bush arranged to receive,
and be mounted upon a stationary square, polygonal, or other shaped spindle, the
metallic, wood, or other active wearing surface of the sheave being arranged to
rotate around the said bush, suitable ball, roller, or other bearings being interposed
between the said bush and sheave with means for automatically lubricating the
same, substantially as and for the purposes herein described and illustrated.
2nd. In an improved sheave, the combination of a pair of plates such as A B, so
constructed as to provide, when bolted or screwed together, a compound bush
having a spindle aperture D, lubricant reservoirs C, and groove E, and carrying
between them a leather or other absorbant ring F, communicating with C and E.
A sheave wearing surface such as G made of lignum vite or other hard wood, and

page_text: held between plates such as HH', connected by screws or bolts such as b, the said
plates being constructed to collectively provide a groove E¹, which, in combination
with the groove E, in the said bush form a race for any number of rollers such as J,
the whole connected and operating substantially as herein described and shewn by
Figs. 1 and 2 of the appended drawings.
3rd. In an improved sheave the combination of a pair of plates such as K and K¹
connected by bolts or screws e, and so constructed as to form lubricant reservoirs C,
communicating by passages g with a groove d¹ the said sheave being arranged to
rotate around a stationery bush composed of plates such as AB held together
by screws such as c the said bush being constructed to provide a spindle aperture D,
and groove d, the latter in combination with the groove d¹, forming a race for
steel or other balls L, acting as bearings by means of which the said sheave may
rotate upon the said bush, substantially as herein described and shewn by Figs. 3
and 4 of the appended drawings.
4th. In an improved sheave, the combination of a pair of metallic rings such
as N and N¹ connected together and to the metallic active or wearing surface M of
the sheave, by the means of screws or bolts such as m, the said portion M being
:so constructed as to provide internally lubricant reservoir C', and in combination
with the said rings N and N¹ to rotate around a stationery bush composed of a
pair of plates such as A B, held together by screws such as h the said bush being
constructed to provide a spindle aperture D, and lubricant reservoirs C, and in
combination with the rings N and N¹ races for two rows of steel or other balls L,
automatically lubricated by the means of channels s and p communicating with the
reservoirs C or C or both substantially as herein described and shewn by Figs. 5
and 6 of the appended drawings.
Dated this 22nd day of December 1806
GEO. THOS. HYDE,
1 Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.