Improvements in or relating to Pneumatic Tyres and Rims for Cycles and other Vehicles.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic Tyres and Rims for Cycles
and other Vehicles.
We, EDWARD EVERARD PRESTON, of No. 20, Gerrard Street, Leicester, Mechanic,
and CHARLES EDWARD SIBSON; of No. 5, East Bond Street, Leicester, Cycle
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to tyres having a combination of rim, outer cover, and
an inflatable tube. According to our invention we use a wheel rim of trough
shape in section formed with angular shaped beadings turned inwards, prefer-
ably flat on their outward periphary. In the edges of the outer cover (which
is composed of a fabric lining and an india-rubber cover) we place bands made
of steel or other suitable material (endless or otherwise) with their inside edges
turned downwards to form an hooked shaped beading. These bands fit on the
top of the angular shaped beadings of the wheel rim and when thereon secure
the said outer cover firmly in position. Or we may have transverse slots formed
through the angular shaped beadings of the wheel rim. And instead of the
aforesaid bands having their edges turned downwards to form an hooked shaped
beading we place studs on the bottom sides of the said bands, these studs engaging
with the transverse slots formed in the angular shaped beadings of the wheel
rim thus holding the outer cover in position.
In another modification we may dispense with the use of an air tube by stretch-
ing an endless piece of india rubber of a certain shape around the top side of
the wheel rim the hooked shaped beadings of the outer cover described above
pressing against the aforesaid piece of india rubber thus forming an air tight
joint.
D
3
T
100-
EDWARD EVERARD PRESTON.
CHARLES EDWARD SIBSON.
Improvements in or relating to Pneumatic Tyres and Rims for Cycles
and other Vehicles.
We, EDWARD EVERARD PRESTON, of No. 20, Gerard Street, Mechanic, and
CHARLES EDWARD SIBSON, of No. 5, East Bond Street, Cycle Engineer, both in
Leicester, in the County of Leicester, do hereby declare the nature of this inven-
TDQ71

page_text: tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
This invention refers to improvements in or relating to pneumatic tyres and
rims for cycles and other vehicles and has for its object the construction of the
combined parts which shall be secure and obviate the difficulty now experienced
in wired and band held tyres.
That our invention may be well understood drawings are annexed in which:
Figure 1 is a sectional view shewing a rim of trough shape, formed with
angular beadings turned inwards of metal or of wood in accordance with this
invention.
Figure 2 shows a section of the angular shaped band employed within the
outer cover of the tyre enveloped in each edge of the lining thereof, and Figure 3
a partly sectional view of a part of a wheel rim with a modification of the pre-
vious figures.
According to our invention we employ a wheel rim A in wood or metal, trough
shape in section as illustrated in the drawings or having a similarity thereto,
formed with angular shaped beadings B turned inwards preferably flat on their
outward periphery.
In the edges C of the lining E, of the outer rubber cover D are placed, or
enveloped the angular shaped or concave faced bands G, made of steel or other
suitable material their inside edges g turned downwards to form a hook shaped
beading, and their outside angular edges "f" fit upon the concave faces of the
wheel rim, the said bands may either be endless-overlapping or may be in sec-
tions, and are formed to the desired shape by running the strips through simi-
larly shaped edged wheels which will turn them to right angles, concave and
arch them at the same time; when the air tube H is inflated by the ordinary
means of a valve and air pump the said angular bands grip to their correspond-
ing beadings and so hold and secure the outer cover and lining in position firmly
to the wheel rim, and in practice the thick line X under the air tube "Figure 1
represents a stiffened supplimentary flap-which covers the angular beadings
of the rim and prevents pinching.
It will be here understood that the angular shaped bands G resting upon the
concavity, and well up to the right angled vertical sides of the wheel rim do
not, or are they liable to float like inextensible wires or their equivalents, the
tyre in fact not depending upon the continuity of the angular shaped or concave
faced bands thus making the holding action of the concave bands and their
angular shaped beds perfectly secure even if such bands become damaged, or
are in sections, whether long or short or in a quantity to, complete the circum-
ference of the wheel rim, the whole pressure (upon the inflation of the air-tube)
being exerted in the direction of the two corners of the angular shaped beadings
and the vertical sides of the wheel rim without the aid of additional fastenings.
It will be obvious to anyone that to release the edge of the cover of the tyre,
upon deflation it has to be pressed forward or inwards and dropped into the
channel a of the rim which is made wide enough for the purpose.
The said angular and concave faced bands are independent of wires or wedges,
and are not held to the inextensible edges of a pneumatic tyre cover by lateral
flanges.
In a modification the slots I see Figure 3" are formed through the angular
concave shaped beadings of the wheel rim, and the concave faced bands G₁ are
fitted with studs or buttons J which when lifted out of the channel a of the rim,
engage with the slots I, thus when the air tube is inflated the outer cover is held
firmly in the rim, if the bands G are made in sections and enveloped within
the edges of the lining of the rubber outer cover the studs J will be in or about
the centre thereof, being entirely independent of wires or wedges.
The properties of the angular or concave faced bands are such that if broken,.
the tyre will still be a good rideable tyre, unlike inextensible wires or rings.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
:-
1. In a pneumatic tyre for the wheels of cycles and other vehicles the com-
bination of a trough shaped channelled metal or wood rim having angular shaped
beadings conforming to angular shaped or concave faced bands enveloped within
the canvas lining of the rubber outer cover, substantially as described.
2 In outer covers with fabric linings of tyres for the wheels of cycles and
other vehicles the enveloping or enclosing of angular shaped or concave bands
such as G whose inside portions are turned downwards and are parallel to the
sides of the channel a of a trough shaped metal or wood rim, substantially as
described and with reference to Figures 1 and 2 of the accompanying drawings.
3. In pneumatic tyres and rims for the wheels of cycles and other vehicles the
combination with a trough shaped. channelled metal
having angular shaped beadings provided at intervals with slots to
receive corresponding studs or buttons in convexed shaped bands such as G¹
enveloped within the edges of the fabric lining of the outer cover, substantially
aз described, and with reference to Figure 3 of the accompanying drawings.
wood rim
Dated this 13th day of May 1898.
W. BESTWICK MAXFIELD,
Registered Patent Agent, 34, Belvoir Street, Leicester,
Applicants' Agent.