Improvements relating to Pneumatic Tyres for Cycle and other Vehicle Wheels.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Pneumatic Tyres for Cycle and other
Vehicle Wheels.
I, FREDERICK ELI APPLEBY, of Normanhurst, Wylde Green, near the City of
Birmingham, Manufacturer, do hereby declare the nature of this invention to be
as follows:-
--
This invention consists of improvements relating to pneumatic tyres for cycle
and other vehicle wheels, my objects being to so construct and arrange the
inner air tube as to permit of its ready removal from the rim without detaching
the latter from the cycle or other vehicle, and to enable such tube to be the more
conveniently repaired.
In carrying my invention into effect in one manner I employ a length of the
ordinary rubber tube for the production of the inner air tube of the pneumatic
tyre, but instead of permanently uniting the ends by solution, cement, or otherwise, I
make a detachable connection placing within each end of the tube a hollow rubber lock-
ing piece having a closed end. Such locking pieces have their adjoining sur-
faces preferably of a diagonal form and are provided with hook like projections to
engage with each other. An ordinary tyre valve is secured to one of their lock-
ing pieces, the head of the valve being disposed within the locking piece whilst
a specially formed washer and a lock nut on the projecting stem effectually
retains the valve in position. The other locking piece has an aperture formed
through it to enable it to be passed over the stem of the valve, and thus the
valve serves to connect the two ends of the split or divided tube together.
My improved air tube, when its ends are connected by the valve, can be inflated
when away from the wheel for the purpose of more conveniently testing the same
or for locating a puncture.
In another application of my invention I dispense with the hollow and closed
end locking pieces herein before described and in place of same I form a bead or
annular projecting rib of rubber or other suitable material near one end of the
tube, and on the outside of the same, whilst at the extremity of the opposite end
of the tube, but on the inner side of same, I provide an internally projecting bead
or rib. When the tube is deflated the end having the externally projecting rib
can be inserted within the end having the internally projecting rib,
and onl the inflation of the tyre when placed in position together
with its outer cover on the wheel rim, the one rib will abut against the other
forming an air tight joint and effectually securing the two ends together. The
air tube can be inflated away from the rim by placing a metallic tube around
the ends before connecting them in order that when they are connected and
inflated the rubber at the ends shall be prevented from expanding to such an
extent as will permit of dis-connection.
In another application of my invention the end of the tube that is inserted in the

page_text: outer portion can be tapered down and fixed to the valve in order that the latter
can be passed through the hole in the outer portion from the inside of same.
Dated this 22nd day of July 1898.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.
Improvements relating to Pneumatic Tyres for Cycle and other
Vehicle Wheels.
I, FREDERICK ELI APPLEBY, of Normanhurst, Wylde Green, near the City of
Birmingham, Manufacturer, 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 consists of improvements relating to pneumatic tyres for cycle
and other vehicle wheels, my objects being to so construct and arrange the
inner air tube of such tyres as to permit of ready removal from the rim of the
wheel without detaching the latter from the cycle or other vehicle, and to enable
such tube to be the more conveniently repaired.
On the accompanying sheet of explanatory drawings I have illustrated five
forms of my improved air tube. In each figure the tube is represented by a
short length only, taken from adjacent to the ends; the ends are shown con-
nected at Figure 1 but disconnected in the other figures.
In carrying my invention into effect in one manner I employ a length of the
ordinary rubber tube for the production of the inner air tube A of the pneumatic
tyre, but instead of permanently uniting the ends by solution, cement, or other-
wise, I make a detachable connection, placing within each end of the tube a hollow
rubber locking piece as B and B¹ having a closed end. Such locking pieces as B
and B have their adjoining surfaces preferably of a diagonal form as shown at
Figure 1 and are provided with hook like projections to engage with each other.
An ordinary tyre valve C is secured to one of the locking pieces, the head of the
valve being disposed within the locking piece B¹ as shown by dotted lines, whilst
an angular section washer D and a lock nut E on the projecting
stem effectually retain the valve in position. The other locking piece
B has an aperture formed through it to enable it to be passed over the stem
of the valve, and thus the valve serves to connect the two ends of the split or
divided tube together.
My improved air tube, when its ends are connected by the valve, can be inflated
when away from the wheel for the purpose of more conveniently testing the same
or for locating a puncture.
In another application of my invention I dispense with the hollow and closed
end locking pieces hereinbefore described and in place of same I form a bead or
annular projecting rib as a of rubber or other suitable material near one end of the
tube A (Figure 2), and on the outside of the same, whilst the extremity of the
opposite end of the tube A¹, but on the inner side of same, I provide an internally
projecting bead or rib a¹. An air tight division piece as a², is arranged within
the tube as shown. When the tube is deflated the end having the externally
projecting rib a can be inserted within the end having the internally projecting
rib a¹, and on the inflation of the tyre the one rib will abut against the other

page_text: forming an air tight joint and effectually securing the two ends together. The
air tube can be inflated away from the rim by placing a metallic tube around the
ends before connecting them in order that when they are connected and inflated
the rubber at the ends shall be prevented from expanding to such an extent as
will permit of disconnection.
In another application of my invention the end of the tube that is inserted
or telescoped within the opposite end is tapered down and fixed to the valve and
the latter is passed through a hole in the outer portion from the inside of same.
Modified forms of connecting the telescoping ends are shown at Figures 3, 4
and 5.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I claim
18-
.
1. In a pneumatic tyre for cycle and other vehicle wheels the use of a dis-
engaging connection for the air chamber substantially as and for the purposes
described.
2. In pneumatic tyres having disconnecting ends to the air chamber the arrange-
ment and use of the valve as a clamping device for such ends substantially as
described and as illustrated.
3. The construction of pneumatic tyres having air chambers with ends arranged
to telescope and interlock with each other, substantially as described and as illus-
trated.
Dated this 29th day of July 1898.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.