Improvements in Wheels for Rolling Stock.
Year: 1888

page_text: Date of Application, 27th Oct., 1888
Complete Specification Left, 29th July, 1889-Accepted, 31st Aug.. 1889
PROVISIONAL SPECIFICATION.
Improvements in Wheels for Rolling Stock.
I, JOHN CHARLES WILSON, of 24 Lincoln's Inn Fields, London, in the County
of Middlesex, Mechanical and Consulting Engineer, do hereby declare the nature of
my said invention to be as follows:-
This Invention relates to the fastening of tyres upon wheels used in connection
with the rolling stock of railways; and its object is to thoroughly secure the said
tyres upon the said wheels without the intervention of loose rings, and so as to
maintain the full width of the wheel's rim.
The modes of fastening hitherto adopted have consisted, generally, of the
following: (1) The tyre is clipped on the outside to the rim of the wheel, and is
fastened on the inside by means of screws passing through the rim of the wheel into
the tyre. (2) The tyre is clipped on the outside to the rim of the wheel, and is also
clipped on the inside by means of a loose ring, which is either wedged in its place
or bolted to the rim. (3) Tho tyro is clipped on both sides to the rim of the wheel
by means of loose rings, which are bolted to the rim of the wheel. The first mode has
the defect of having no thorough fastening of the tyre all round on the inside (so as
to retain the tyre in its place when it is broken into several pieces), but only at the
points where the screws enter; the second and third modes have the grave defects of
employing loose rings, bolts, and wedges, which are not always reliable, and which
further necessarily reduce the width of the wheel's rim and thereby its strength and
its bearing surface or foundation for the tyre. This latter defect is of very great
importance, as the tyre is shrunk hot on the rim and, manifestly, the greater the
bearing surface on the rim the better is the hold of the shrunk tyre upon it; and,
furthermore, the incessant blows on the flange of the tyre (when the engine is
running) necessitate its proper bearing on the rim, to the full extent of its width on
the flange side, in order that the blows may be received by the full resistance of
the rim.
:
My Invention, which is designed to overcome all these defects, consists of the
following clip the tyre to the rim of the wheel on the outside in the usual way;
I clip the tyre to the rim on the inside by projecting the rim into the tyre, at the
part where it is thickest, viz., just opposite the flange of the tyre. This projection of
the rim, in the case of new wheels, is forged or cast solid with the rim; in the case
of altering existing wheels, it is shrunk on the rim and fastened to it with screws, or
it may be screwed on to it.
By these means I fasten the tyre securely to the rim all
round both outside and inside without the intervention of loose rings, &c., and the full
width of the wheels' rim is retained.
Ontahan 071 1000
COMPLETE SPECIFICATION.
Improvements in Wheels for Rolling Stock.
1, JOHN CHARLES WILSON, of 24 Lincoln's Inn Fields, London, in the County
of Middlesex, Mechanical and Consulting Engineer, do hereby declare the nature
of my said 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 fastening of tyres upon wheels which are used for the
rolling stock of Railways or Tramways, and it has for its object to thoroughly secure
the said tyres upon the said wheels without the intervention of separate rings held in
their places by means of bolts, wedges, or screws, and at the same time to maintain
the full width of the wheels' rims,

page_text: The modes of fastening hitherto adopted, have consisted, generally, of the
following (1) The tyre is clipped to the outside of the rim of the wheel, and is
fastened on the inside by means of screws passing through the rim of the wheel into
the tyre. (2) The tyre is clipped to the outside of the rim of the wheel, and is also
clipped to the inside by means of a separate ring, held in its place by either bolts,
wedges, or screws. (3) The tyre is clipped to both sides of the rim of the wheel by
means of separate rings, which are bolted to the rim of the wheel. The first mode
has the defect of having no thorough fastening all around the inside of the rim of the
wheel, but only at the points where the screws enter; the second and third modes
have the grave defects of employing separate rings held in their places by means of
bolts, wedges, or screws, which are not always reliable, and which, further, necessarily
reduce the width of the wheels' rim, and thereby its strength and bearing surface or
foundation for the tyre. This latter defect is of very great importance, as the tyre is
heated and shrunk on to the rim, and manifestly the greater its bearing surface on
the rim the better will be its hold upon it. But, furthermore, the blows which are
constantly being imparted to the flange of the tyre whilst the engine is working
necessitate its having the longest possible bearing on the rim, in order that the flange
may be sufficiently supported and the blows met by the full resistance of the rim.
My Invention, which overcomes these defects, consists of the following:-I clip the
tyre to the rim of the wheel on its outside in the usual way; I also clip the tyre to
the rim of the wheel on its inside by projecting the rim into the tyre at the part
where it is thickest, namely, opposite the flange of the tyre. This projection of the
rim is forged or cast solid with the rim. The tyre is made to fit into the clips, and is
heated and shrunk on to them in the usual way. It need not necessarily be heated,
however; for it can be bored out slightly tapered, with the wheel's riin turned to
the same, and it can then be pressed on by hydraulic pressure, in the same way as the
wheels themselves are pressed on to their axles. Lastly, I have a projecting piece on
the inside of the tyre, which warmed and then hammered and swaged over the rim
of the wheel, and in this manner the tyre is effectually prevented slipping off the
wheel sideways.
DESCRIPTION OF THE DRAWING.
The drawing hereunto annexed fully represents my Invention. A is the clip on
the outside of the wheels' rim, B is the projection of the wheel's rim into the tyre,
Cis the clip on the inside of the wheel's rim, and D is the projecting piece on the
tyre which is hammered and swayed over the wheel's rim.
Having now described and illustrated my Invention and stated in what manner
the same is to be performed, I claim,―
The construction of wheels for rolling stock whereby the tyres are fastened on by
means of two solid clips, one on the inside and another on the outside, both being
parts of the wheels' rim, with the full width of the rim maintained, combined with a
projecting piece on the inside of the tyre hammered and swayed over the rim to
prevent the tyre slipping off the wheel sideways, substantially as herein described
and illustrated.
In witness whereof, I the said John Charles Wilson, have hereunto set my hand
and seal this Twenty seventh day of July in the year of our Lord One
JOHN C. WILSON.