Improvements in Spindles for Centrifugal and other Machines, and in the Means for Supporting the same.
Year: 1890

page_text: Date of Application, 22nd Apr., 1890
Complete Specification Left, 24th Dec., 1890-Accepted, 21st Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Spindles for Centrifugal and other Machines, and
in the Means for Supporting the same.
I, JESSE SELLARS 30 Dairy House Road Litchurch Derby Patternmaker do
hereby declare the nature of this invention to be as follows:-
In the employment of spindles for centrifugal and other machines I suspend the
rotary spindle from the upper part of the hollow neck which, oscillates by means
of a ball and socket joint at the bottom.
The advantages being in greater simplicity of construction and working.
I form my spindle solid instead of using a hollow spindle and fixed internal
spindle. At the upper and lower ends of a hollow neck made of cast iron or other
suitable material I fit internal bushes of gun metal or other material.. I shape the
lower part of the said hollow neck so as to form the ball of a ball and socket joint
the socket being formed on the bottom of a deep and suitable bracket, the hollow
neck being free to oscillate at the ball and socket joint and is supported by means
of a flange about midway between the two bushes which rests on an india-rubber
ring carried by a chamber at or near the top of the supporting bracket.
In the hollow neck I insert my solid spindle projecting through at both ends
and free to revolve in the aforesaid bushes, the upper end of this spindle I support
by a nut or collar secured by any suitable means and resting on the top of a
number of loose washers, the top deep washer may be fixed to spindle. A double
oil reservoir surrounds these washers the inner one being for the purpose of
lubricating them and the spindle and may be a portion of the hollow neck carried
upward. The upper bush has its end diminished in thickness and carried upward
inside of top deep washer and just leaving a clearance between it and said washer.
The lower part of this bush is fixed to the hollow neck by means of a set screw
and I may utilize this set screw for lubricating purposes by means of a hole
through it and oil being supplied thereto from the outer compartment of the
double oil reservoir above mentioned, the said outer compartment for this reason
joins the hollow neck below the set screw, a suitable oil gauge is provided for
these compartments, the outer one being arranged to overflow into the inner one
the gauge shews when the oil has got below this point.
In the loose washers I provide one or more slots across the upper surface for the
reception of oil, in connection with each of these slots I provide a hole perforating
through and widening out on the underside of the washer for lubricating purposes.
Dated this 21st day of April 1890.
JESSE SELLARS,
Applicant.
.
COMPLETE SPECIFICATION.
Improvements in Spindles for Centrifugal and other Machines, and
in the Means for Supporting the same.
I, JESSE SELLARS, of Derby, in the County of Derby, do hereby declare the
nature of my 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 relates to improvements in spindles for centrifugal and other
machines and in the means for supporting the same.
In carrying out my invention I employ a hollow neck made of cast iron or other
suitable material and advantageously bushed with brass at its ends. In this hollow
[Price Sd.]

page_text: neck is inserted a spindle which is free to revolve and is supported at its upper end
by a washer secured by a nut or other suitable means, the said washer which rests
upon a number of loose washers for absorbing or reducing friction being of greater
depth than the other washers and secured to the spindle by means of a key or set-
screw. This arrangement allows of the spindle being withdrawn without disturbing
the machine or the framing which supports the machine.
The upper portion of the hollow neck is made so as to form an oil reservoir and
may be made in two compartments, the outer compartment being arranged so that
the oil can enter into the bearings of the hollow neck, this being effected by means
of a hollow set-screw, which also secures the upper bush, which is prolonged and
carried up through the centre of the washers to a height above the level of the
inner oil chamber, thus preventing the lubricant in which the washers revolve from
entering the hollow neck, a screw-plug is provided at the bottom of the inner
compartment by which the oil can be drained out when necessary.
The lower portion of the hollow neck is made spherical so as to form a ball, as
in a ball and socket joint, and this spherical part rests in a deep bracket or
may be fitted in a loose ring or bearing formed in halves which is fitted in the
bracket.
The hollow neck is also provided with a flange about midway in its length by
which is is supported on an india-rubber ring resting in a chamber at or near the
top of the deep supporting bracket. The hollow neck may be made in two pieces
and be joined by flanges, a recess being provided at one side of the flange in which
there is a pin which will prevent the neck from revolving.
By this arrangement the hollow neck and spindle are free to oscillate at the ball
and socket joint, and at the same time they are supported by the flanges resting
upon the india-rubber ring which practically prevents any vibration when the
spindle is revolving.
A pulley through the medium of which a rotary motion is given to the spindle
is fixed onto the same below the hollow neck.
The loose washers have one or more slots provided across one of their surfaces
for the reception of oil for lubricating the same.
In order to enable my invention to be fully understood I will proceed to describe
how it may be carried into practice by reference to the accompanying drawing,
in which:
Figure 1 is a sectional elevation of a spindle for a centrifugal machine and means
for supporting the same constructed according to my invention; and,
Figure 2 is a half sectional plan, drawn to an enlarged scale, through the loose
washers.
A and A¹ are the upper and lower portions of my hollow neck which, as shewn,
is formed in two parts adapted to be connected by the flanges B, B¹ and bolts and
which are fitted with the upper bush C and the lower bush C¹ respectively. D is
the spindle inserted in the hollow neck and supported at the top by the deep
washer E connected to the spindle by a key or set-screw and secured by the nut F,
and G, G are the loose washers upon which the washer E rests.
H is the compartment in the upper portion of the hollow neck and forming the
reservoir for the oil for lubricating the washers, the oil being prevented from
entering the bearings in the hollow neck by a prolongation J of the bush C which
may advantageously be a piece of tube screwed into the same and which extends
above the level of the oil in the said compartment H. K is the plug-screwed into
the compartment H by which the oil can-be-drained off when necessary. L is the
spherical part-at-the-lower end of the hollow neck fitting in the loose ring M made
in halves, and inserted in the deep bracket N. or this bracket itself may be made of
a suitable shape to suit the spherical part of the hollow neck. The deep bracket N
has a chamber formed at the top of the same in which is inserted the india-rubber
ring O supporting the flange B₁ and so taking the weight of the whole apparatus.
Qis the pin fixed in the bracket N and serving to prevent the hollow neck from
revolving.

page_text: P is the annular space between the compartment H and the outer portion of the
hollow neck, which space is used as a reservoir for oil for lubricating the spindle
which revolves in the bushes C and C¹; R is the screw with holes serving as an
oil channel and also acting as a set-screw to prevent the bush C from revolving.
By withdrawing the screw the oil reservoir P may be drained.
S is a hinged cover and T is the pulley fixed to the spindle D by which the
latter is caused to revolve.
U, U (Figure 2) are the webs which keep the washers G in position, and W, W
are the slots or grooves across the surfaces of the washers, which grooves serve for
the reception of oil.
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. A spindle for a centrifugal or other machine supported, by means of a nut and
washer, in such a manner that by removing the said nut and washer the said spindle
can be removed without disturbing the machine or the framing which supports the
machine, substantially as described.
"
2. The combination with a spindle for a centrifugal or other machine of means
for lubricating the same, substantially as described.
3. A spindle for a centrifugal or other machine supported in a hollow neck in the
manner substantially as described.
4. A spindle for a centrifugal or other machine mounted in a neck which is free
to oscillate by means of a ball and socket joint, substantially as described.
5. The combination with a spindle for a centrifugal or other machine of a number
of loose washers for reducing friction, the said washers being provided with slots in
their surfaces for the reception of the lubricating oil, substantially as hereinbefore
described.
means for
6. The improved spindle for a centrifugal machine and the
supporting the same hereinbefore described and illustrated in the accompanying
drawing.
1
VI Dettmoci foOJU.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.