Improvements in Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 25th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres.
We, PETER MACLELLAN, of the Firm of George MacLellan & Co., Rubber
Manufacturers, Glasgow Rubber Works, Maryhill, Glasgow, and JAMES
WEDDERBURN OGILVY WALKER, Manager with said Firm, do hereby declare the
nature of this invention to be as follows:-
This Invention, which relates to pneumatic tyres for the wheels of cycles and
other vehicles, has for its object to provide for readily removing the air tube from
the outer covering or jacket and replacing it therein.
The air tube is of the butt-ended type, that is to say it is composed of a length
of rubber tubing closed at both ends which meet when the tube is secured within
the cover. The cover is tubular being secured on the wheel rim without the use of
wires by inflation of the air tube; and at the inner periphery two slits or hand-
holes are formed at points about diametrically opposite each other to give access
to the air tube. These slits are normally closed by lacing a cord, lace or wire
through eyes secured by sewing or otherwise on either side of each slit. When
the air tube is to be removed for repair of punctures or the like, the tyre is deflated
and removed from, the wheel rim, and the laces are drawn through the eyes to
open the slits or hand holes. The butt ends of the air tube, which are usually
joined by a rubber sleeve, and meet at one of the hand hales are freed, and a cord
tied on the ends of the air tube, and the tube is then drawn out through the
opposite hand hole. Owing to the flexibility of the outer cover it assumes the form
of a straight tube whilst the inner tube is being drawn out and but little friction
is involved. After repair of the air tube the butt ends are again drawn into and
through the outer cover by means of the cord and they are joined in proximity
to the hand hole. The hand holes are then laced up and the tyre replaced on the
rim.
For the purpose of preventing slip or creeping around the wheel rim and to
dispense with cementing the cover to the rim a number of nipples are secured at
intervals around the inner periphery of the cover and these enter orifices formed
for their reception in the rim, being secured therein if necessary by screw nuts.
Dated this 24th day of Varambor 1906:
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
Saint Vincent Street, Glasgow, Agent for the Applicants.
Improvements in Pneumatic Tyres.
We, PETER MACLELLAN, of the Firm of George MacLellan & Co., Rubber
Manufacturers, Glasgow Rubber Works, Maryhill, Glasgow, and JAMES
WEDDERBURN OGILVY WALKER, Manager with said Firm, do hereby declare the
[Price 8d.1

page_text: 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:-
This Invention, which relates to pneumatic tyres for the wheels of cycles and
other vehicles, has for its object to provide for readily removing the air tube from
the outer covering or jacket and replacing it therein.
The Invention is illustrated by the accompanying drawing which shows the air
tube being withdrawn from the cover.
The air tube A is of the butt-ended type, that is to say it is composed of a length
of rubber tubing closed at both ends, A A2 which meet when the tube is secured
within the cover B. The cover B is tubular being secured on the wheel rim with-
out the use of wires by inflation of the air tube A and at the inner periphery two
slits or handholes C, D, are formed at points about diametrically opposite each
other to give access to the air tube A. These slits are normally closed by lacing a
cord, lace or wire through eyes E secured by sewing or otherwise on either side of
each slit C, D. When the air tube A is to be removed for repair of punctures or
the like, the tyre is deflated and removed from the wheel rim, and the laces are
drawn through the eyes to open the slits or hand holes C, D. The butt ends A', A³,
of the ur tube A, which are usually joined by a rubber sleeve, and meet at the
band hole C are freed, and a cord F, tied on the ends of the air tube A and
the tube A is then drawn out through the opposite hand hole D. Owing to the
flexibility of the outer cover B it assumes the form of a Straight tube as shewn,
whilst the inner tube A is being drawn out and but little friction is involved.
After repair of the air tube the butt ends A1, A2, are again drawn into and through
the outer cover by means of the cord and they are joined in proximity to the hand
hole C. The hand holes C, D, are then laced up and the tyre replaced on the rim.
For the purpose of preventing slip or creeping around the wheel rim and to
dispense with cementing the cover to the rim a number of nipples G are secured at
intervals around the inner periphery of the cover B and these enter orifices formed
for their reception in the rím, being secured therein if necessary by screw nuts.
Having now particularly described and ascertained the nature of our said In-
vention, and in what manner the same is to be performed, we declare that what
we claim is:―
A pneumatic tyre composed of a tubular cover formed with slits or handholes
for the admission and withdrawal of a butt-ended air tube substantially as
described.
Dated this 24th day of August 1897
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62 Saint Vincent Street, Glasgow, Agent for the Applicants.