Improved Self Lubricating Corve Wheels and Axles.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improved Self Lubricating Corve Wheels and Axles.
I, THOMAS ROWBOTHAM Commercial Traveller residing at 87 Shaw Heath
Stockport in the County of Chester, 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 :-
My invention relates to the construction of Wheels & Axles for Colliery Trams
or Corves, or other similar Waggons, and consists of a certain arrangement and con-
struction of the Wheel & Axle, whereby a supply of oil is constantly carried to the
bearing when the Wheel is working, while the working parts are protected from dirt,
and waste of oil prevented.
It must be understood that these Wheels work loose on the Axles.
Fig. 1 is an elevation of an improved Wheel for outside bearings-shewn in section,
with oil cap secured to the wheel, and the axle in position.
Fig. 2 ditto for outside bearings.
Fig. 3 is a cross section of oil cap for outside bearings, as seen from outside.
Fig. 4 is an elevation of an improved wheel casting, as seen in front of wheel with
oil cap off.
Fig. 5 is a cross section of oil cap for inside bearings with swivel in centre for
admitting oil as seen from outside.
A are the oil spaces in the wheel which may be more or less in number according to
the size of the wheel. B are the midfeathers between the boss and outer rim which
carry the oil to the bearings. C is the axle. D is the tube for admitting oil when
bearings are outside, so placed as to prevent the oil running out again, and covered
with swivel slide to keep out dirt.
I may here observe that I sometimes use a screw for admitting oil in place of the
tube.
E is the slide arrangement for admitting oil in the centre of the cap for inside
bearings.
It will be seen that when a supply of oil is resting in the bottom oil spaces in the
wheel, that the midfeathers will conduct it round to the bearings when the wheel
revolves. The small gutters cut in the boss will also assist in conducting the oil.
The caps will prevent loss of oil and keep out dirt-the one shewn in Figs.
2 & 5 being specially designed to admit oil quickly and yet to retain it when the
wheel revolves; as the oil will flow past the hole in the centre when the oil is admitted
-into the bottom spaces in the wheel.
I wish to be understood that in reference to the annexed drawings- I do not confine
myself to precise details, or relative proportions which may be altered without inter-
fering with the principles of the invention.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed I declare that what I
claim is.
(1) The special construction of wheel casting herein described, and shewn in
drawings annexed, particularly the oil spaces A and midfeathers B or their equivalent.
(2) And particularly the construction and use of the oil caps shewn in drawings or
their equivalent (particularly the arrangement E for oiling in the centre, and the
method of securing the caps to the wheels outside the oil spaces) by which in con-
junction with my special wheel casting, I (1) prevent waste of oil (2) obtain constant
lubrication (3) and protect the bearings from dirt.
Dated this 20th day of June 1889.