Improvements in Means for Lubricating the Bearings of Sheaves of Pulley Blocks, Loose Pulleys, or Wheels which Revolve unon Stationary Axles. OF OF ,SEYS, OR WHEELS WHICH REVOLVE UPONARY A
Year: 1884

page_text: Improvements in Means for Lubricating the Bearings of Sheaves
of Pulley Blocks, Loose Pulleys, or Wheels which Revolve
unon Stationary Axles.
I, JAMES BOND, of Longridge near Preston in the County of Lancaster, Iron and
Brass Founder, do hereby declare the nature of said Invention for "1MPROVEMENTS
IN MEANS FOR LUBRICATING THE BEARINGS OF SHEAVES OF PULLEY BLOCKS,
LOOSE PULLEYS, OR WHEELS WHICH REVOLVE UPON STATIONARY AXLES" to be as
follows:-
This Invention consists in providing means for lubricating the bearings of sheaves
of pulley blocks, loose pulleys, or wheels which revolve upon stationary axles
whereby the rubbing surfaces may be lubricated automatically in such manner that
when once supplied with lubricant, no further attention will be required for a long
period; my improvements being more particularly advantageous in cases where the
bearings, such for instance as of the sheaves of ship's pulley blocks, are subject to
variations of climate and are morcover difficult of access for the renewal of
lubricant.
According to my Invention the boss or central portion of the sheave, pulley, or
wheel is formed with a series of triangularly shaped cavities or recesses radiating
from the axle which enclose lubricant of a semi-liquid consistency preferably the
preparation known as "solidified oil." The apexes of the. triangularly shaped
cavities or recesses are open to the axle forming a series of narrow openings or slots
parallel to its axis and allowing of a slight contact of the lubricant with the axle.
Ono or both sides of the boss may be provided with an annular movable ring let
in so as to be flush with the side of the boss and so as to form or close in tho sides
of the cavities. When only one side is provided with a movable ring, the
corresponding part at the opposite side of the boss, or oven both sides if thought
desirable, may be cast with and form part of the boss itself.
14

page_text: COMPLETE SPECIFICATION.
I, JAMES BOND, of Longridge, near Preston, in the County of Lancaster, Iron and
Brass Founder, do hereby declare the nature of my Invention for "IMPROVEMENTS
IN MEANS FOR LUBRICATING THE BEARINGS OF SHEAVES OF PULLEY BLOCKS,
LOOSE PULLEYS, OR WHEELS WHICH REVOLVE UPON STATIONARY AXLES" and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This Invention consists in providing means for lubricating the bearings of sheaves
of pulley blocks, loose pulleys, or wheels which revolve upon stationary axles
whereby the rubbing surfaces may be lubricated automatically in such manner that
when once supplied with lubricant no further attention will be required for a long
period; my improvements being more particularly advantageous in casos where the
bearings, such for instance as of the sheaves of ship's pulley blocks, are subject
to variations of climate and are moreover difficult of access for the renowal of
lubricant.
According to my Invention the boss or central portion of the sheave, pulley, or
wheel is formed with a series of triangularly shaped cavities or recesses, radiating
from the axle, which enclose lubricant of a semi-liquid consistency, preferably the
preparation known as "solidified oil," The apexes of the triangularly shaped
cavities or rocesses are open to the axle forming a series of narrow openings or slots
parallel to its axis and allowing of a slight contact of the lubricant with the axle.
One or both sides of the boss may be provided with an annular movable ring let in
so as to be flush with the side of the boss and so as to form or close in the sides of
the cavities. When only one side is provided with a movable ring the corresponding
part at the opposite side of the boss, or even both sides if thought desirable, may be
cast with and form part of the boss itself.
In the accompanying Drawings Fig. 1 is a sectional side view and Figs. 2 and 3-
cross sections of a sheave illustrating the nature of my improvements for lubricating
bearings as above described. a is the boss or central portion, b. b. the triangularly
shaped cavities or recesses radiating from the axle c. d is an annular movable
ring let-in to a recess so as to fit tightly therein and to be flush with the side of
the boss a. Fig. 2 shows the arrangement when only one side is provided with an
annular movable ring d, the opposite side being cast with and forming a part of the
boss itself; and Fig. 3 shews the arrangement when both sides of the boss are
provided with the annular movable rings d. d.
Although I preferably make the cavities or recesses for containing the lubricant
of triangular form as shewn in the Drawings it will be evident that the particular
shape of the cavities may be varied without departing from the nature of my
Invention so long as the arrangement permits of the semi-liquid lubricant finding
its way to the axle through narrow openings.
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 :-
Constructing the bosses or central portion of sheaves of pulley blocks, looso
pulleys, or wheels which revolve upon stationary axies with cavities or recesses
communicating with the surface of the axle through narrow openings substantially
as described and shewn in the Drawings for the purpose specified.
DL1