Year: 1896

page_text: I, NATHANIEL JACKSON of "The County Club" Cork, Ireland, County Surveyor, do
hereby declare the nature of this invention to be as follows:-
This invention has reference to improvements in and relating to pneumatic wheel
tyres and has for its object to provide efficient means for preventing total or temporary
disablement of the machine or vehicle arising from punctures in the air tubes,
applicable as well to the double-tube as to the single-tube variety of pneumatic tyres,
and to enable the rider of the cycle or person in charge of the vehicle to continue on
his way without being obliged to repair or fill up the puncture before resuming his
journey, whereby delay and the tedious process of patching, otherwise necessary on
the spot, is obviated.
For this purpose I employ an inner division, made of India Rubber, and contained
in and suitably secured to the sides of the tyre tube, so as to form a second tube or air
chamber within the first by inflating the said rubber division and thereby providing,
when separately inflated, an inner covering for any puncture that may occur to the
outer air-tube.
The said inner division may either be made separate and fixed in position, or it may
be cast in a piece with the outer air tube, or, a second separate air-tube may be
suitably placed and secured within the first.
Two air-valves for connection with the pump are provided; one to serve the outer,
and the other for the inner air-tube. The latter may be partially inflated to any
suitable extent before the inflation of the outer tube is commenced.
Should the ordinary or outer tube become punctured, the inner tube or air chamber,
formed by the inner India Rubber division as herein before described, may then be
inflated to its full capacity and the puncture in the outer tube will thereby be
effectually closed up from within, so that the cyclist or person in charge of the vehicle
can continue-his journey with very little delay.
When at home the puncture in the outer pneumatic tube may be repaired at
leisure in the usual fashion, and the inner tube or air chamber may be deflated entirely
or partially, and thus be in readiness for future emergencies.
Dated this 4th day of August 1896.
HUGHES, ELI, & HUGHES,
Agents for Applicant.

page_text: Improvements in or relating to Pneumatic Wheel Tyres.
I NATHANIEL JACKSON of the Town of
County Surveyor do hereby declare the
manner the same is to be performed, to
in and by the following statement :-
Bandon in the County of Cork, Ireland,
nature of this invention and in what
be particularly described and ascertained
This invention has reference to certain improvements in and relating to Pneumatic
Tyres and has for its object to provide efficient means for preventing total or
temporary disablement of the machine or vehicle arising from puncture of the air
tube or tubes, the invention being applicable equally to the double tube variety of such
tyres as to the single tube variety; and to enable the user of the vehicle to continue
his journey without being obliged to repair the puncture, whereby delay and the
tedious process of patching, otherwise necessary on the spot is obviated.
For the purpose of this Invention I employ an inner division or divisions of the
main air-tube of the tyre, made of Indian rubber and contained in and securely and
airtightly fitted to or inside of the ordinary air-tube, so as to form a second, or more
divisions or air Chambers, thereby allowing for the inflating separately of the inner
air Chamber or Chambers and so providing an inner covering or coverings for any
puncture that may occur to the main air-tube.
The said inner division or divisions may be made, either by being cast in one piece,
or they can be made by joining a piece of Indian rubber as shown in Figures 1 and 2,
or two tubes can be stretched flat, one on top of the other and the insides cemented
together, this will make a double division across the tube when blown out.
Two or more air valves for connection with the pump, are provided, one connected
with the main or Bottom air-tube and the other, or others, with the suplementary
inner Tubes or Chambers. The said supplementary tubes are to be partially inflated,
to any required extent, before the inflation of the Lower tube is commenced, as this
will greatly lessen the vibration of the machine.
In Figures 1 and 2, and 4 and 5, the Lower Chamber is made in the usual way,
the upper Chamber will have a space of about half an inch between each end, this will
be covered by a band six and a half inches long and one and a half inches wide, with
the air valve in the Centre, this piece is to be firmly cemented to the outside of the
Tube, leaving a passage from the air valve to the Upper Tube. A similar arrangement
can be used should three Chambers be used, the Indian rubber band will then only
pass over the Middle and Lower Tubes. Should the top tube become punctured, the
Inner tube or Chamber may then be inflated to its full capacity and the puncture in
the outer tube will be effectually closed up from within and should both Chambers be
punctured, the holes in the Chambers will not be over each other, but will be in a
different position, owing to the wheel being in motion at the time of the puncture, so
that the Upper Section will cover the hole in the Centre division and the Centre the
Upper hole, thereby effectually closing both punctures. The punctures can be
repaired at leisure.
In the drawings annexed hereto there are shown fittings of such pneumatic tyres
according to this invention and the same will be referred to by figures and letters in
the following description.
Fig. 9. represents a portion of the tyre and rim of a wheel fitted according to this
invention and showing the Indian rubber band and the nipple & valve for supplying
the Upper Chamber. This valve is on the opposite side of the diameter of the wheel
to the valve that supplies the Lower Chamber.
If a third Chamber is used, the valve can be placed at any distance between
these two valves.

page_text: Fig. 7. Section of Band shewing the position of the valve.
Fig. 8. shows the Band in position looking down on the Tube.
Fig. 1. represents the cross Section of the Tube made out of a piece of Indian
rubber according to this Invention, as it may be before puncture of the outer
tube.
Fig. 2. is a like view, showing the device with inner tube inflated after puncture of
the outer tube.
Fig. 4. shows the same arrangement as Fig. 1. only the Tube is cast in a mould
instead of being made.
Fig. 5. shows the tube inflated after being punctured.
Fig. 6. represents a cross section of the tube, divided into three compartments,
cast in a mould. The air is pumped into the Middle Chamber through the hole g.
Fig. 3. shows the same Section after the upper tube has been punctured, showing the
second Chamber blown up to stop the puncture. This arrangement still leaves the
lower Chamber available in case of a serious puncture in the two Upper Tubes or
Chambers.
a. represents the Rim of the Wheel.
b. the outside Rubber Tubular Tyre.
C. the Inside Rubber Diaphragm or secondary Tube, separately connected with an
air-way K. which is provide with Valve and Nipple for the air pump.
d. is a raised rim on the diaphragm C, to avoid a too sharp bend of the rubber when
nflated.
e and f. represent the Nipple and Valve.
g. is a small hole in the Tube C. to admit air into the Middle Chamber by the aid
of an extra Band-same as H. passing over the two Lower Chambers only.
H. A Band 6 inches by 1 inches cemented round Tubes, leaving a passage for the
air.
L. Outside Cover to protect Tubes.
J. In Figures 1. 2 and 7. is the Cement joint.
The valve to supply air to the Upper Chamber is placed in the Centre of this band H,
or any other convenient place.
The same arrangement is to be used to supply air to the Middle Chamber, only the
Band will be placed over the top of the Middle Chamber, and made airtight before
the Upper Chamber is finished.
i. is the second diaphragm in Figures 3. and 6.
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 is:
In the First place by using two or more Chambers by means of a Horizontal
Division or Divisions, the Vibration of the Machine or Vehicle is considerably reduced,
and the Strain on the Wrists and Nerves of the Rider greatly relieved by this
improvement in or relating to the Fittings of the Pneumatic Tyres, as herein set
forth and shown by the respective figures on the Drawings.
When Riding over a Rough Road the concussion is transmitted to the Second Air
Chamber before it acts on the Steel Frame, thereby greatly reducing the jolt.
Secondly. The mode of conveying the air to the second and third Chambers by
means of the Bands H.
Thirdly. When punctured the means of inflating the Chambers when required to do
to nomade puncture
Bandon July 23rd 1897.