Improvements in and relating to the Manufacture of Tyres for Wheels.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to the Manufacture of Tyres for
Wheels.
We FREDERICK RICHARD BARTON PHILLIPS, Cab Proprietor, and TOM
BRICKLAND, Cab Proprietor, both of Royal Mail Yard, Gough Street, Gray's Inn
Road, in the County of Middlesex 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 :-
Our invention relates to an improved form of wheel tyre of that class which
consists of a metallic ring carrying a band of india rubber or other elastic or
yielding material and the object we have in view is to produce a more efficient tyre
than at present in use.
For this purpose we provide dies or rolls of such construction that when a rod,
or a ring (which may be either welded or weldless) of convenient sectional area is
passed between them it assumes the form of a flanged ring of peculiar construction
whose flanges are turned over inward for the purpose hereinafter described.
We moreover so arrange that the said flanged ring shall have formed on the
base of it's section two inclined planes for the purpose also hereinafter described.
We may sometimes vary the number of rolling or forming operations, but we
prefer to use two..
In order that our invention may be clearly understood and readily carried into
effect we have illustrated it by the accompanying drawings in which
Figs. 1 and shew the particular forms of dies or rolls which we prefer to use in
the first and second operations respectively.
Fig. 3 is a cross section of the finished tyre with the elastic band fitted.
Figs. 4 and 5 are a front and end view respectively, on a reduced scale, of the
first operation forming rolls with the roller device by means of which we are
enabled to bend a rod of metal to the required circular shape for welding as it
passes through the forming rolls. The bending may be done at either the first or
second operations however, or in any other convenient manner, and the ends may
be welded together at any time during the process of manufacture.
We will describe our invention as applied to the manufacture of a wheel tyre
from a rod of iron or steel which is bent to the required circular shape in the
first rolling operation; then welded, before passing through the second rolling
operation, after which the elastic band is fitted; reference being had to the
accompanying drawings in which similar letters and figures apply to similar parts
throughout.
Provided that it is of sufficient sectional area the rod or ring may be of any
convenient form before rolling.
On passing between the rolls B C in the first operation the rod A is formed to
the section shewn in Figs. 1 and 4, the base being thickest in the centre 6 from
which point on either side an inclined plane e extends to the flanges.
The object of these inclined planes is to wedge or spread out the elastic band D
sideways against the flanges of the metallic ring A, when pressure is brought to
bear upon it as would be the case in actual use on the wheel of a vehicle, and we
thereby greatly reduce the chance of an elastic band becoming detached in con-
sequence of rough usage or on sustaining a side wrench or other sudden strain.
By preference we make the flanges slightly tapering as shewn in the drawings so as
to render it more easy to turn them over in the second operation.
In the rear of the forming rolls B C we arrange rollers or guides d d d in such a
manner that the rod A is caused to pass under them and become bent to the
required circular shape, see Figs. 4 and 5.

page_text: We do not confine ourselves to any particular number of bending rollers or
guides, and may so arrange that they shall be capable of adjustment so as to suit
various sizes of tyre rings. The ends. of the bent rod are now welded in any
convenient manner so as to form a complete ring.
The ring is now passed between the rolls B, C, in the second operation (see
Fig. 2) which turn the flanges c cover inward, and it is made to assume the
section A, shewn in Figs. 2 and 3.
The metallic portion of the tyre is now completed, and the band of india rubber
or other elastic material D is next pressed or in any convenient manner inserted
between the flanges c c and is firmly clenched in position as shewn in Fig. 3.
The inside or base of the elastic band is provided with a groove a so as to allow
of the wedging or spreading action of the inclined planes to be as fully utilized as
possible. We may, however, sometimes use an elastic band without the groove a
as the inclined planes e e will always have a tendency to spread it out, whether
grooved or solid.
Moreover, although we prefer to turn over the flanges cc of the metallic ring A,
to the amount shewn on the drawings it is obvious that we may turn them over, if
necessary, either more or less; neither do we confine ourselves to any particular
method in producing a tyre of the form shewn in the accompanying drawings.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The manufacture and use of a double flanged metallic ring the flanges of
which are turned over inward, and having inclined planes formed on the base of it's
section, substantially as and for the purpose specified.
2. The manufacture and use of a band of india rubber or other elastic or yielding
material having a groove formed on it's inner circumference, substantially as and
for the purpose specified.
3. The manufacture and use of a wheel tyre consisting of a metallic flanged ring
having inclined planes formed on the base of it's section, and having a band of
india rubber or other elastic or yielding material, with or without the wedging
groove, secured between it's flanges substantially as herein described.
Dated this 24th day of December 1892.
FREDERICK RICHARD BARTON PHILLIPS.
ת.זrומעת mdir
FREDERICK RICHARD BARTON PHILLIPS.
TOM BRICKLAND.