Improvements in Wheels.
Year: 1890

page_text: Date of Application, 9th Aug., 1890
Complete Specification Left, 29th Sept., 1890-Accepted, 1st Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Wheels.
JAMES GASCOYNE 451 Wandsworth Road S.W. Engine Grinder do hereby declare
the nature of this invention to be as follows:-
By turning waves on the lip of a wheel, also turning a cone on the other side with
wheel and tyre to match thus causing the wheel to stop from turning round in
the tyre.
Dated this 9th day of August 1890.
JAMES GASCOYNE.
COMPLETE SPECIFICATION.
Improvements in Wheels.
JAMES GASCOYNE 451 Wandsworth Road Clapham London S.W. Engine Grinder
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:-
This invention has for its object to provide means for more effectually securing the
tyres of wheels of locomotives and other railway rolling stock to the wheel rims so as
to prevent the tyre from flying asunder should it become fractured, and also to prevent
the wheel rim from slipping round in the tyre as is frequently the case where the
tyre is secured to the rim by bolts, which in the course of time become sheared through,
and consists essentially in turning a series of waves on a lip on the outer edge of
the wheel rim which lie or fit in a corresponding series of waves in an undercut
groove turned in the inner side of a projecting ring on the tyre, the rim and
tyre being secured together by means of an angled lip or cone on the inside
of the tyre or by a locking ring forced into a groove in the tyre and clipping the
wheel rim.
In the accompanying two sheets of drawings,
Fig. 1 is a vertical section of an engine wheel with the tyre secured to the wheel
rim according to this invention.
Fig. 2 is a side elevation of a tyre and Fig. 3 is a cross-section of the same showing
in dotted lines the waved groove, and
Fig. 4 is an end elevation of a wheel rim showing the waved lip for fitting into the
corresponding groove in the tyre.
and
Figs. 5 and 6 aro enlarged sections of the rim and tyre with angled lip fastening
Figs. 7 and 8 are enlarged sections of a rim and tyre secured together by a locking
ring driven into a groove in the tyre.
In one arrangement of a wheel and tyre constructed according to this invention, as
shown on Figs. 1 to 6, the wheel rim is formed with a lip a on its outer edge having
a series of waves (four in the drawings) which lip fits into an undercut groove b
having a corresponding series of waves. The inner sides of the rim and tyre have
corresponding cones c formed on them so that when the tyre is heated and the wheel
rim dropped into its place, the tyre on cooling contracts on the rim, and the cone on
the tyre effectually secures the lip a in the groove and prevents the rim being
withdrawn laterally, thus preventing any possibility of the rim turning in the tyre.
The tyre may be formed with a lip d either straight or slightly coned, it being forced
up to the cone on the rim by hydraulic pressure, hammering, or other means.
heating the tyre most on its flanged side the lip a falls into the groove before the
cones c close on one another.
By

page_text: In the modified arrangement shown in Figs. 7 and 8, a groove e is cut in the
tyre into which a dovetailed ring f is forced whilst hot, and after the tyre is
shrunk on the rim, the lip being then forced tightly against it to firmly secure it
in place.
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 1
claim is
Y
1. Forming a lip on the outer edge of the rim of a wheel and a corresponding
groove in the tyre each with a series of corresponding waves, substantially as described
and for the purpose specified.
20. Forming corresponding cones on the inner sides of the wheel rim and
tyre for securing the tyre to the wheel rim in a lateral direction substantially as
described.
.
4°. The arrangement and construction of and means for securing tyres to wheel
rims substantially as described with reference to the drawings.
Dated this 29th day of September 1890.
WHEATLEY & MACKENZIE,
40, Chancery Lane, W.C., Agents.