Improvements in Centrifugal Machines.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Centrifugal Machines.
We, JOHN LAIDLAW, of the Firm of Watson, Laidlaw & Coy., of 98, Dundas
Street, South, in the County of the City of Glasgow, North Britain, Engineers, and
JAMES WRIGHT MACFARLANE, Manager of the said firm, do hereby declare the
nature of this invention to be as follows:
-
This invention relates to improvements in the lubrication of the internal
spindle bearings of Weston suspended centrifugal machines, such as are described
in Application No. 17544 of 1899. In bearings of this class the revolving washers
carry the oil round with them and owing to centrifugal force the oil is caused
to flow out from between the rubbing surfaces through the lubrication grooves
or oil channels which are cut in their surfaces. The outside revolving spindle
carries the oil round with it and owing to centrifugal force the oil is kept away
from the centre. The rubbing surfaces, therefore, once the oil escapes, are left
dry and as a result they are apt to seize. The object of this invention is to
prevent this seizing by proper lubrication.
In carrying out our invention we cut grooves in the bottom nut which does not
revolve in such a manner as to cause the revolving oil to be forced in to the centre
and rise up among the washers and lubricate them.
Instead of cutting grooves- in the stationary nut we sometimes cut similar
grooves in the bottom washer, which, being fastened to the bottom nut, does not
revolve. We may also attach vanes to the stationary inner spindle to stop the oil
revolving along with the outer spindle and cause it to flow through suitable
channels to the inside of the revolving washers.
Dated this 6th day of October 1899
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow,
Applicants' Patent Agents.
improvements in centrirugal Machines.
We, JOHN LAIDLAW, of the Firm of Watson, Laidlaw and Company, of
98, Dundas Street, South, in the County of the City of Glasgow, North Britain,
Engineer, and JAMES WRIGHT MACFARLANE, Manager of the said firm, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following state-
ment:-
Our invention relates to the lubrication of the internal spindle bearings of

page_text: Weston suspended centrifugal machines, such as are described in our prior
Patent No. 17544 A.]). 1899. In bearings of this class the revolving washers carry
the oil round with them and owing to centrifugal force the oil is caused to flow
out from between the rubbing surfaces through the lubrication grooves or oil
channels, which are cut in their surfaces. The outside revolving spindle carries
the oil round with it and, owing to centrifugal force, the oil is kept away from
the centre. The rubbing surfaces, therefore, once the oil escapes, are left dry
and as a result they are liable to seize. The object of this invention is to prevent
this seizing by proper lubrication.
In order that our invention may be properly understood and readily carried
into effect we have hereunto appended one sheet of drawings, of which,
Figure 1 is a plan of the nut, and Figure 2 is a section on line,
Figure 3 is a plan of the upper side of the bottom washer, and Figure 4 is a
section on line y, y.
Fig. 5 is a section corresponding to Fig. 2 but at an opposite plane of an
alternative arrangement.
In carrying out our invention we cut grooves a in the bottom nut, which does
not revolve, in such a manner as to cause the revolving oil to be forced in to the
centre and rise up among the washers and lubricate them.
Instead of cutting grooves in the stationary nut, we sometimes cut similar
grooves b in the bottom washer, which, being fastened to the bottom nut, does
not revolve. Referring to Fig. 5, we may attach vanes c to the nut of the
stationary inner spindle to stop the oil revolving along with the outer spindle
and cause it to flow through suitable channels d to the inside of the revolving
washers.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is―
The improvements in the lubrication of the internal spindle bearings of Weston
suspended centrifugal machines, substantially as described and illustrated on the
accompanying sheet of drawings.
11
T
1000
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow,
Applicants' Patent Agents.