Improvements in Means for attaching Pneumatic Tyres to Wheels.
Year: 1897

page_text: Date of Application, 16th Mar., 1897
Complete Specification Left, 16th Dec., 1897-Accepted, 5th Mar., 1898
PROVISIONAL SPECIFICATION.
Improvements in Means for attaching Pneumatic Tyres to Wheels. .
We, THOMAS DUNN, of 83, Tierney Road, Brixton Hill, in the County of London,
Member of the Stock Exchange, and THE SELF-FIXING PNEUMATIC VEHICLE AND
CYCLE TYRES SYNDICATE, LIMITED, of 28, King Street, Cheapside, in the City
of London, do hereby declare the nature of this invention to be as follows:-
In the Specification of Letters Patent, No. 14953 of 1894, granted to Charles
Woolley, there is described inter alia for attaching pneumatic tyres to the plain
or approximately plain peripheries of the wheels of ordinary road vehicles, a separate
or independent band of angle pieces adapted to fit around and engage with a wheel
rim and to receive and hold a pneumatic tyre, the said band of angle pieces con-
sisting of two sets of plates alternately arranged and flexibly connected together,
each of the said plates being bent or angled at both ends, in opposite directions
one end being adapted to engage with the pneumatic tyre and the other with one
side or edge of the wheel. The band of angle pieces was in one form covered or
enclosed in a suitable casing of flexible material such as canvas to freely allow of
slight lateral movement between the angle pieces so that their action in gripping
the wheel should not be impaired. In order that the band should present continu-
ous smooth ridges at the sides the gaps or spaces between the bent ends of adjacent
angle pieces on each side of both the inner and outer channels in the band were
filled with strips of material such as india rubber or by suitably formed sheet
metal connecting pieces adapted to clip on to the bent ends of the angle pieces.
The use of these filling pieces although effective for the purpose intended rendered
the construction of the band complicated and expensive and the covering of the
band with any flexible material as was necessary by the construction to produce
continuous smooth ridges was further objectionable as such material was neces
sarily very liable to be damaged.
Now the present invention has for object to so construct an automatic tyre
attaching band of the kind mentioned as to obviate the necessity of enclosing it
in a flexible casing and of having to use filling pieces of the kinds mentioned to
ensure practically continuous smooth edges to the flanges of the band.
For this purpose in a band of the kind referred to according to this invention each.
plate or angle piece, is deeply notched at its opposite transverse edges or sides and
the plates or angle pieces are so placed together that the recesses of the neighbour-
ing ones fit together in such a manner that the ends of each alternate pair extend
over one end and under the other end of the intermediate plate or angle piece and
meet together at its centre thereby forming a band having inner and outer channels
the sides or flanges of which present practically smooth and continuous surfaces.
The notches may advantageously be of rectangular shape and extend to about one
quarter of the peripheral length of the plate or angle piece.
The plates or angle pieces arranged as described may be connected together in
any suitable way as by connecting them to one or more strips or tapes of metal
or other suitable material in such a way as to permit of the two sets of angle pieces
moving laterally in opposite directions to a small extent.

page_text: The band may be made in one length, its ends being suitably conected together,
as for example by means of the air valve of the tyre. It may however if desired,
be made in two or more lengths suitably connected together. It may also if desired,
be enclosed in a flexible casing, although ordinarily this will no longer be
necessary.
Improvements in Means for attaching Pneumatic Tyres to Wheels.
We, THOMAS DUNN, of 83, Tierney Road, Brixton Hill, in the County of London,
Member of the Stock Exchange, and THE SELF-FIXING PNEUMATIC VEHICLE AND
CYCLE TYRES SYNDICATE, LIMITED, formerly of 28, King Street, Cheapside, but now
of 94, Hatton Garden, in the City of London, 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:
-
In the Specification of Letters Patent No. 14953 of 1894 granted to Charles
Woolley, there is described inter alia for attaching pneumatic tyres to the plain
or approximately plain peripheries of the wheels of ordinary road vehicles, a separate
or independent band of angle pieces adapted to fit around and engage with a wheel
rim and to receive and hold a pneumatic tyre, the said band of angle pieces con-
sisting of two sets of plates alternately arranged and flexibly connected together,
and each of the said plates being bent or angled at both ends in opposite directions,
one end being adapted to engage with the pneumatic tyre and the other with one
side or edge of the wheel. The band of angle pieces was, in one form, covered or
enclosed in a suitable casing of flexible material such as canvas, to freely allow of
slight lateral movement between the angle pieces so that their action in gripping
the wheel through the action of the air pressure in the tyre should not be im-
paired. Also in order that the band should present continuous smooth
ridges at the sides, the gaps or spaces between the bent ends of adjacent
angle pieces on each side of both the inner and outer channels in the band were
filled with strips of material such as india rubber, or by suitably formed sheet
metal connecting pieces adapted to clip on to the bend ends of the angle pieces.
The use of these filling pieces, although effective for the purpose intended, rendered
the construction of the band complicated and expensive, and the covering of the
band with any flexible material, as was necessary by the construction to produce
continuous smooth ridges, was further objectionable as such material was neces
sarily very liable to be damaged.
Now the present, invention has for object to so construct a tyre attaching band
of the kind mentioned as to obviate the necessity of enclosing it in a flexible casing
and of having to use filling pieces of the kinds mentioned to ensure practically con-
tinuous smooth edges to the flanges of the band.
For this purpose the band, built up of bent plates or angle pieces (hereinafter
called angle pieces) of the kind referred to, is constructed as we shall now describe
with reference to the accompanying drawings wherein Figs. 1 and 2 show part
of the improved band in plan and side elevation respectively, and Fig. 3 in cross
section on the line xx of Fig. 2. In Fig. 3 the pneumatic tyre and wheel rim with

page_text: which the band of angle pieces is used, are indicated by dotted lines. Figs. 4 and 5
are plan and end views respectively of one of the angle pieces detached. The re-
maining figures are hereinafter referred to.
According to this invention each doubly bent plate or angle piece 1, or 1* is
deeply notched at its opposite .transverse edges or sides as shown at 2 and 3, and
the angle pieces are placed together as shown so that the recesses of the neigh-
bouring ones fit together in such a manner that the ends 1°, 1d of each alternate
pair extend over one end 1° and under the other end 1' of the intermediate angle
piece and meet together at its centre thereby forming a band having inner and outer
channels the respective sides or flanges 4 and 5 of which present practically smooth
and continuous surfaces, the angle pieces being slightly bent at the centre 1*
(Fig. 3) to permit of one passing below another as shown. The notches 2 and 3
may advantageously be of rectangular shape as shown and extend to about one
quarter of the peripheral length of the angle piece.
The angle pieces arranged as described may be connected together in any suitable
way, as by connecting them to one or more strips or tapes of metal or other suitable
material in such a way as to permit of the two sets of angle pieces moving laterally
in opposite directions to a small extent. In the example shown in Figs. 1 and 3,
the angle pieces are connected to a thin metal strip 6, shown in dotted lines in
Fig. 1, by pivots 7 each of which extends through a slot 8 in the corresponding
angle piece so as to permit of lateral movement of the said angle piece relatively
to the strip. Or the angle pieces may be connected by inserting wires 4° in the
tubular edges 4b (See Fig. 3).
To prevent one set or series of angle pieces 1 tilting relatively to the other set or
series 1 when the band is off a wheel, as would be possible with the latter and like
methods of connecting the angle pieces at the ends, the central portion of each
angle piece may be provided with a tongue piece 9 arranged to overlap the end.
portions of the opposite angle pieces as shown in plan and end view respectively in
Figs. 6 and 7. The tongue piece may be stamped up out of the metal of the angle
piece as shown, or it may be a separate piece of metal rivetted in place. In the
former case its free end should be thinned. Or, as shown in plan and longitudinal
section respectively, in Figs. 8 and 9, there may be used a separate tongue 10°
formed at opposite sides with ears 10b adapted to be folded under the central portion
or neck of each angle piece (see Fig. 9).
The band of angle pieces may be made in one length, its ends being suitably
connected together, as for example by means of the air valve of the tyre, the stem
of which may be passed through a hole 11 formed in one end of the band and also
through a lug 11, attached to the other end, as indicated for example in plan view
in Fig. 10. Usually it will be necessary to shorten the terminal angle pieces -to
enable the band to properly fit the wheel to which it is to be attached.
In attaching a pneumatic tyre 12 having endless inextensible wires in the edges
of the tyre cover to wheel 13 with a band of angle pieces 1, 1 such as herein
described, the band, assuming its ends to be connected together, is first placed around
the wheel rim, whereupon about two thirds of the circumference of the pneumatic
tyre can readily be placed around and within it. Then the remaining portion of
the band is drawn to one side of the wheel, to enable the tyre to be placed com-
pletely around and within the band, after which, the two edges of the cover being
kept close together in the outer side of the channel, the displaced portion of the
band, with the tyre within it, is forced back over the wheel. Upon inflation
of the tyre the wires or rings in the edges of the tyre-cover will be spread apart
and act laterally in opposite directions against the outwardly turned edges 4 of the
angle pieces causing their inwardly turned edges 5 to bear tightly against the sides
or edges of the wheel and so holding the tyre firmly in place.
It is preferred however to employ with a band of angle pieces of the kind herein-
before described, a tyre the wires on the edges of whose cover are not endless but
are capable of being expanded and contracted by a suitable coupling device such
for example as a rotatable sleeve or nut formed with right and left handed screw

page_text: threads and engaging the correspondingly formed ends of the wire which are to be
connected by it. In this case the tyre could be placed within the band when the
latter completely encircles the wheel and without, for this purpose, disturbing
such band.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed we declare that what
we claim is :-
-
1. For securing a pneumatic tyre on a vehicle wheel, a band of angle pieces
adapted to fit around and engage with a wheel and to receive and hold a pneumatic
tyre, each of the said angle pieces being notched at its opposite edges or sides and
the angle pieces being so arranged that the recesses of the adjacent ones fit together
in such a manner that the ends of each alternate pair extend over one end and under
the other end of the intermediate angle piece and meet together at its centre thereby
forming a band having inner and outer channels the sides or flanges of which pre-
sent practically smooth and continuous surfaces, substantially as herein described.
2. For securing pneumatic tyres on wheels, the improved bands of angle pieces
constructed, arranged and operating substantially as hereinbefore described with
reference to and shown in the several examples illustrated in the drawings
annexed.
Dated this 16th day of December 1897.
For the Applicants,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.