Improvements in Pneumatic Tyres for the Wheels of Cycles and other Light Road Vehicles.
Year: 1898

page_text: PROVISIONAL DIUITIATION.
Improvements in Pneumatic Tyres for the Wheels of Cycles and
other Light Road Vehicles.
I, JOHN NEWHOUSE, 6, Essex Street, Colne, Lancashire, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in tubeless pneumatic tyres for the wheels
of cycles and other light road vehicles, and consists essentially of improvements in
the construction of wired on tubeless pneumatic tyres, so as to enable them to be
easily inflated and easily detached for repairs.
Hitherto it has been usual to secure the wires to the rim before inflating so as
to prevent the air escaping round the edges of the tyre.
According to my invention the tyre may be attached to the rim by means of
endless wires, and as easily inflated or detached as an ordinary tyre with an air tube.
The improved tyre consists preferably of india-rubber and canvas or the like,
arch shaped in section, and with endless wires or their equivalent enclosed in the
edges thereof for attachment to the rim; said wired edges being surrounded with
elastic india rubber for the purpose of making air tight joints with the shoulders-of
the rim or with the edges of a strip of india rubber which occupies the channel of
the rim. I may construct the tyre in several ways: -
First. I may construct it in an arched form (in section) with the canvas or other
restraining material inserted between two layers of rubber. and the tyre when com-
plete is turned inside out, so that the inner concave surface finally becomes the outer
convex surface or tread: the object being that the edges of the tyre, when on the
rim, may expand laterally and press against the inner edges of the rim, thus pre-
venting the escape of air round the edges of the tyre, and enabling the latter to be
easily inflated. The canvas or other restraining material may, if desirable, be fixed
to the outer convex surface of the tyre, so that when the latter is turned inside out,
it may form the inner casing or lining.
Second. The tyre may be built up of two arched strips of elastic india rubber,
the two concave or two convex surfaces being cemented together with the restrain-
ing material between.
Third. The tyre may be constructed in a similar manner to the ordinary
Welch outer cover, and a flat strip of elastic india rubber is then cemented to the
inner surface of the tyre, so as to produce the required lateral expansion against
the inner edges of the rim.
Fourth. The tyre may have a strip of leather, hide, cork, or other suitable
material fixed to the inner surface so as to produce the required lateral expansion of
the edges.
Fifth. The tyre may be moulded in a semicircular form (in section) with the
edges two or three inches apart. In all cases the edges of the tyre are, as usual,
surrounded with rubber to make the air tight joints, and the strip of rubber which
occupies the channel of the rim may be permanently connected with one edge of

page_text: the tyre, and this edge of the tyre may also be permanently secured to the rim;
the other edge being detachable for repairs.
These tyres may be constructed so as to fit the ordinary popular rims, such as
the Dunlop, Westwood, or Clincher, and they may be attached to the rim by means
of hooks, grapples, or the like, or by means of the contraction of the restraining
material.
Improvements in Pneumatic Tyres for the Wheels of Cycles and
other Light Road Vehicles.
I, JOHN NEWHOUSE, Cotton Weaver, formerly of 6, Essex Street, but now of 85.
Derby Street, Colne, Lancashire, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:
-
This invention relates to improvements in tubeless pneumatic tyres for the wheels
of cycles & other light road vehicles, & consists essentially of improvements in
the construction of tubeless wired on pneumatic tyres so as to enable them to be
easily inflated & easily detached for repairs.
Hitherto it has been usual to secure the wires to the rim before inflating so as
to prevent the air escaping round the edges of the tyre.
According to my invention the tyre may be attached to the rim by means of
endless wires, & as easily inflated or detached as an ordinary tyre with an air tube.
The improved tyre consists preferably of india-rubber & canvas, or the like,
arched shaped in cross section, & with endless wires or their equivalent enclosed
in the edges thereof for attachment to the rim; said wired edges being surrounded
with elastic india rubber for the purpose of making air tight joints with the
shoulders of the rim or with the edges of a strip of rubber which occupies the
channel of the rim.
I may construct the tyre in several ways:-
First. I may construct it in an arched form (in cross section) with the canvas or
other restraining material inserted between two layers of rubber, & the tyre when
complete is turned inside out, so that the inner concave surface finally becomes the
outer convex surface or tread; the object being that the edges of the tyre, when on
the rim, may expand laterally & press against the inner edges of the rim, thus
preventing the escape of air round the edges of the tyre, & enabling the latter to
be easily inflated. The canvas or other restraining material may, if desirable, be
fixed to the outer convex surface of the tyre so that when the latter is turned inside
out it may form the inner casing or lining.
Second. The tyre may be built up of two arched strips of elastic india rubber,
the two convex or two concave surfaces being cemented together with the restrain-
ing material between.
"
Third. The tyre may be constructed in a similar manner to the ordinary
Dunlop Welch" outer cover, & a flat strip of elastic india rubber is then
cemented to the inner surface of the tyre so as to produce the required lateral
expansion against the inner edges of the rim.
Fourth. The tyre may have a strip of leather, hyde, cork, or other suitable
material fixed to the inner surface thereof so as to produce the required lateral ex-
pansion of the edges.

page_text: Fifth. The tyre may be constructed in a semicircular form, in section, with the
edges several inches apart.
In all cases the edges of the tyre are, as usual, surrounded with pure rubber to
make the air tight joints, & the strip of rubber which occupies the channel of the
rim may be permanently connected with one edge of the tyre, & this edge of the
tyre may also be permanently secured to the rim; the other edge being detachable
for repairs. These tyres may be constructed so as to fit the ordinary popular rims,
such as the " Dunlop," Westwood or Clincher," & they may be attached to
the rim by means of hooks, grapples, or the like; or by means of the contraction of
the restraining material.
*
In order that my invention may be clearly understood I append drawings in
which:--
Fig 1 is a transverse section of tyre showing the method of construction accord-
ing to my invention in the reverse direction to that which it occupies when on the
rim.
Fig. 2 shews the same inverted & attached to the rim.
Fig. 3 is a section showing another method of constructing a tyre from two
arched strips of elastic rubber by cementing them with their convex surfaces to-
gether with the restraining material between.
Fig. 4 shews the same when complete & attached to the rim.
Fig. 5 shows a section of tyre having a strip C of leather or hyde attached to its
inner surface; the wires D being embedded in the edges thereof.
Fig. 6 is a section of tyre constructed in a semicircular form with the edges
several inches apart.
The same letters refer to the same parts in all the figures. A is the external
rubber portion or tread. B is the internal portion of rubber; being preferably
pure. C is the canvas or other restraining material, the wires D being embedded in
the edges thereof. F is a section of wheel rim & E is the strip of rubber which
occupies the channel thereof.
Having now particularly described & ascertained the nature of my said invention
& in what manner the same is to be performed, I declare that what I claim is :-
(1) The construction of pneumatic tubeless tyres for the wheels of bicycles &
other vehicles, with the object of causing the edges thereof to expand laterally &
press against the inner edges of the rim, so as to enable said tyres to be easily
inflated, substantially as described & shown.
(2) A pneumatic tubeless tyre for the wheels of bicycles & other vehicles,
consisting of elastic india rubber & canvas or the like, having its edges surrounded
with pure india rubber & inclosing inextensible wires or their equivalent, said
tyre being constructed in an arched or tubular form in transverse section in the
reverse direction to that which it occupies when on the rim, in combination with a
suitable rim & air proof pad, substantially as & for the purpose hereinbefore de-
scribed & shown.
(3) A pneumatic tubeless tyre for the wheels of bicycles & other vehicles
consisting of two strips A & B (Figs. 3 & 4) of elastic india rubber of an arched
or tubular form in transverse section cemented with their convex surfaces logether
with a strip C of canvas or other restraining material between. The edges thereof
being surrounded with pure india rubber & inclosing inextensible wires or their
equivalent in combination with a suitable rim & air proof pad substantially as
& for the purpose hereinbefore described & shown.
(4) A pneumatic tubeless tyre, arched shaped in transverse section, & consist-
ing of elastic india rubber & leather or hyde. The edges thereof being surrounded
with pure india rubber & inclosing inextensible wires or their equivalent, in
combination with a suitable rim & air proof pad, substantially as & for the
purpose herein before described & shown.
(5) A pneumatic tubeless tyre consisting of elastic india-rubber & canvas
or the like, said tyre being constructed in a semicircular form in transverse section,

page_text: the edges thereof being surrounded with pure india rubber & inclosing inexten-
sible wires or their equivalent, in combination with a suitable rim & air proof
pad, substantially as & for the purpose hereinbefore described & shown.
Dated this 17th of October 1898