Improvements in Bearings for Shafts, particularly applicable to Wood-working Machinery.
Year: 1896

page_text: Date of Application, 30th Mar., 1896
Complete Specification Left, 28th Dec., 1896-Accepted, 6th F b., 1897
PROVISIONAL SPECIFICATION.
Improvements in Bearings for Shafts, particularly applicable to
Wood-working Machinery.
1 JOSEPH BRADBURY of Brook Iron Works Charles Street Manchester in the
County of Lancaster Engineer do hereby declare the nature of this invention to be
as follows:-
The object of this invention is the construction of a bearing for shafts which
shall require the minimum amount of attention, is not effected by dirt and which
shall be efficiently lubricated without waste of lubricant.
In carrying out my invention I construct the body portion of the bearing for
shafts with a cavity or receiver designed to contain the oil or other lubricant and
in the upper side of such cavity or receiver and immediately underneath the
bottom step of the bearing I form an elongated slot which elongated slot I prefer
to fill with cotton wool or other filtering material. Through the bottom step and
immediately over the elongated slot I form a small hole and in this small hole
I introduce a length of wick depending from such hole through the cotton wool
and into the cavity or receiver. At both sides of the small hole I further provide
a channel extending to within a short distance of each end of the bottom step.
At any convenient point in the side of the body of the bearing I provide a
passage communicating with the cavity or receiver and this passage I prefer to
close with a crew stopper. The top step and the cap of the bearing are formed
without the usual oil passage.
It will now be seen that if the cavity or receiver be filled with lubricant through
the side passage that upon the shaft being revolved in the bearing it will draw its
supply of lubricant by means of the wick through the filtering material which
will ensure no grit getting to the bearing and further that as there is no hole
through the cap and top step the bearing cannot become fouled. It will be
obvious that the greater the speed of the shaft the greater will be the quantity of
lubricant supplied and that no matter at what rate the shaft may run it will
always be supplied with sufficient lubricant and no more. And it will be apparent
that shafts running in this bearing will be revolved with the minimum of power
consequent upon the entire absence of dirt or grit.
A bole fitted with a screw plug is provided in the bottom of the cavity or
receiver for the purpose of cleaning such cavity or receiver.
Dated this 27th day of March 1896.
JOSEPH BRADBURY.
COMPLETE SPECIFICATION.
Improvements in Bearings for Shafts, particularly applicable to
Wood-working Machinery.
I JOSEPH BRADBURY of Brook Iron Works Charles Street Manchester in the
County of Lancaster 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 :-
The object of this invention is the construction of a bearing for shafts which
D

page_text: shall require the minimum amount of attention is not effected by dirt and which
shall be efficiently lubricated without waste of lubricant.
And in order that my invention may be more readily understood and carried
into effect I have hereunto annexed a sheet of drawings which I will now proceed
to explain with the assistance of the figs. and letters of reference marked
thereon.
Fig. 1 is a sectional elevation and Fig. 2 a plan view with the cap removed of
my improved bearing in which A is the body portion of the bearing formed with
a cavity or receiver B designed to contain the oil or other lubricant and in the
upper side of such cavity or receiver B I form an elongated slot C which elongated
slot C I prefer to fill with cotton wool or other filtering material. Through the
bottom step D and over the elongated slot CI form a small hole E and in this
hole E I introduce a length of wick F depending from such hole E through the
cotton wool and into the cavity or receiver B. At both sides of the sinall hole E
on the upper side of the bottom step DI form a channel G extending to within a
short distance of each end of the bottom step D. At any convenient point in the
side of the body A of the bearing I provide a passage H communicating with the
cavity or receiver B and this passage I prefer to close with a screw stopper I.
The top step and the cap of the bearing are formed without the usual oil passage.
The hole K provided with the plug L is designed for the purpose of cleaning the
cavity or receiver B. It will now be seen that if the cavity or receiver B be filled
with lubricant through the side passage H that upon the shaft being revolved in
the bearing it will draw its supply of lubricant by means of the wick F through
the filtering material which will ensure no grit getting to the bearing and further
that as there is no hole through the cap and top step the bearing cannot become
fouled. It will be obvious that the greater the speed of the shaft the greater will
be the quantity of lubricant supplied and that no matter at what rate the shaft
may run it will always be supplied with sufficient lubricant and no more and it will
be apparent that shafts running in this bearing will be revolved with the minimum
of power consequent upon the entire absence of dirt or grit.
Having thus particularly described and ascertained the nature of my said
invention together with the best method for carrying the same into effect I declare
that what I claim is
The combination and arrangement forming a bearing for shafts substantially as
hereinbefore described and illustrated on the accompanying drawing.
Dated this 24th day of December 1896.
J. BRADBURY.