Improvements in Wheel Rims.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Wheel Rims.
I, JOHN TOWNSEND TRENCH of Kenmare, County Kerry, Ireland, Land Agent,
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in wheel rims for carrying pneumatic
tyres, and it consists in the application to existing rims of hoops, bands or their
equivalents of such a shape as will alter the cross section of the said rims to adapt
them to receive tyres other than those they were intended to carry.
These hoops, bands or their equivalents may be made in one or more lengths
adapted to be fixed together and to the wheel rim in any suitable manner, and
they may be provided on their outer faces with studs, spikes or ridges of any
suitable shape for the object of preventing the cover from creeping on the wheel
rim, more especially if the tyre is ridden when deflated.
The hoop, band or its equivalent may be either flat, concave or of an inverted
V-shape in cross section or a combination thereof according to the type of tyre
the modified rim is intended to carry.
By my invention many of the wheel rims now in use for tyres of the "Clincher,"
"Palmer," "Dunlop," and other types may be readily and conveniently altered
to adapt them to carry tyres of the tubeless or other type.
7071
Nanamhon 1906
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
I, JOHN TOWNSEND TRENCH of Kenmare, County Kerry, Ireland, Land Agent,
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 relates to improvements in wheel rims for carrying pneumatic
tyres, and it consists in the application to existing rims of a band or its equivalent
of such a shape as will alter the cross section of the grooves of such rims to adapt
them to receive tyres other than those they were constructed to carry.
In the accompanying drawing which illustrates-by way of example-some
forms of my invention:-

page_text: Figure 1 is a view in transverse section of a wheel rim X fitted with a band
Figure 2 is a broken view of one form of band.
Figures 3 and 4 are views in transverse section and plan respectively of another
form of band.
Figure 5 is a broken view in plan of a further form of band, and Figures 6
and are views in plan and side elevation respectively showing a convenient
method of connecting the two ends of the band.
Throughout the views similar parts are marked with like letters of reference.
The band A or its equivalent is preferably made out of one strip but it may be
made in two or more strips if found more convenient. The band is made of the
requisite length and width to fit the rim on which it is intended to be mounted,
and its ends are connected or coupled together in any convenient manner, such
as that illustrated by Figures 6 and 7 in which a tongue or fang a¹ is formed on
or fixed to one end of the band and is adapted to be passed through one of a series
of holes or slots a3 in the other end of the band and then turned or flattened down.
To keep the edges or margins of tyres or tyre covers of the divided type at their re-
spective sides of the rim when one or other of the said edges or margins is dismounted
the side of the band intended to form the outer face of the bottom of the groove
of the rim is provided either with a ridge such as a as shown by Figures and 2
or with a series of stud projections a as shown by Figures 3, 4, 6 and 7. These
projections are preferably of conical form as they can be conveniently formed by
stamping them up out of the strip of which the band is made, but obviously they
may be formed in any other convenient manner. Although the ridge or projec-
tions are shown in the accompanying drawing arranged in one line, it or they
may be arranged in two lines if necessary.
Instead of making the band of the required width throughout its entire length
it may be made up of a narrow strip such as A¹ and cross strips such as A as shown
by Figure 5, in which case the heads of the rivets used to fix the pieces together
may form the stud projections a.
The band's may be made of any suitable metal such as tin, aluminium or gun
metal.
Although the band or its equivalent is shown flat in cross section, it may be
made concave or of an inverted V shape, or of any other section according to the
type of tyre the modified rim is intended to carry.
By my invention many of the wheel rims now in use for tyres of the "Clincher,"
"Palmer," "Dunlop," and other types may be readily and conveniently altered to
adapt them to carry tyres of the "Trench" or other tubeless type.
I am aware that it has been proposed to form projections on the faces of the
grooves of wheel rims, or on bands placed therein, to engage with pneumatic tyres
to prevent "creeping" and I do not therefore claim such projections broadly,
but having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The improvements in or relating to wheel rims for carrying pneumatic tyres,
as herein specified and illustrated by the accompanying drawing.
2. A band for varying the transverse section of the grooves of wheel rims for
carrying pneumatic tyres, constructed arranged and adapted to operate, as set
forth..
3. A band for varying the transverse section of the grooves of wheel rims for
carrying pneumatic tyres, having one or more longitudinally arranged ridges or
series of projections, as and for the purpose set forth.
4. A band for wheel rims adapted to carry pneumatic tyres consisting of a
narrow band and cross plates arranged at spaced intervals as herein described
with reference to Figure 5.
5. A band for wheel rims adapted to carry pneumatic tyres consisting of a

page_text: strip A of suitable metal or other material having one or more longitudinally
arranged ridges or series of projections such as a and having also a tongue or fang
such as a' at one end and a series of holes or slots such as a2 at the other end, as
set forth.
6. The combination with a wheel rim adapted to carry a pneumatic tyre, of a
band such as A having one or more circumferentially arranged ridges or series of
projections such as a, as and for the purpose set forth.
Dated: L 1.
1005
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and l'atent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.