Improvements in Pneumatic Tyres for Cycles and other Wheels.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Cycles and other Wheels.
I, THOMAS FREDERICK ACTON ASH of Manor House, Gnosall, in the County
of Stafford do hereby declare my said invention to be as follows:-
My invention has for its object improvements in pneumatic tyres for cycles and'
other wheels, and which is capable of being easily fixed to most rims and does not
require the use of special sections for securing it and the outer case can be easily
removed and turned inside out for examination and repair.
My new tyre consists of a tyre or outer casing or tread with the edges adapted
to come together with a splice inside and upon the bottom of the wheel rim or the
edges may lap over each other a little or about. Inside this casing or tyre-for it
may be simply the casing with an internal main tube or it may be both casing and
tube, I place a small air tube covered or formed with or consisting of unstretch-
able material such as rubber covered with canvass with its air valve nipple.
When this tube is inflated it presses upon the junction of the edges of the outer
casing or tread or tyre and squeezes the edges against the bottom and inside sides
of the rim and makes a perfectly sealed junction. A second air valve nipple
penetrates through this small air tube and communicates with the internal
part of the tyre or tyre tube by which this outer tube or tyre proper is
inflated.
These tyres may be adapted to any wheels and to suit various diameters very
easily.
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres for Cycles and other Wheels.
I THOMAS FREDERICK ACTON ASH of Manor House, Gnosall in the County
of Stafford, Farmer, do hereby declare the nature of my said invention and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
My invention has for its object improvements in pneumatic tyres for cycles and
other wheels and which is capable of being easily fixed to most rims and does not
require the use of special sections for securing it and the outer case can be easily
removed and turned inside out for examination and repair.
My new tyre consists of a tyre or outer casing or tread with the edges adapted
to come together with a splice inside and upon the bottom of the wheel rim or the
edges may lap over each other a little or abut. Inside this casing or tyre-for it
may be simply the casing with an internal main tube or it may be both casing and
tube, I place a small air tube covered or formed with or consisting of unstretch-
able material such as rubber covered with canvas with its air valve nipple.
D

page_text: When this tube is inflated it presses upon the junction of the edges of the outer
casing or tread or tyre and squeezes the edges against the bottom and inside sides
of the rim and makes a perfectly sealed junction. A second air valve nipple
penetrates through this small air tube and communicates with the internal
part of the tyre or tyre tube by which this outer tube or tyre proper is
inflated.
These tyres may be adapted to any wheels and to suit various diameters very
easily.
In order that my invention may be clearly understood and more easily carried
into practical effect. I have appended hereunto a sheet of drawings illustrating the
same and by which the principle will be distinctly understood.
Figure 1 is a cross section through the rim A of a wheel showing the cover B
inflated as it would appear when ready for use.
Figure 2 is a cross section through the rim A at the point where the valve for
inflation enters the small or inner tube E.
Figure 3 is a cross section shewing a modification in the mode of securing the
edges 63 and 64 of the cover B.
Figure 4 is a similar cross section to Figure 3 but showing the passage tube e
through the small tube E for conveying the air from the nipple V₁ to the inside of
the larger case or tube B.
The outside cover B may either finish with the edges b', 6' abutting against each
other as seen at Figure 1 or with the edges 63 and 6 over-lapping each other as
seen at Figure 3. In both cases the edges are kept down to the wheel rim A and
sealed by the small inner air tube E which is inflated from the nipple V as seen at
Figure 2. The portion of this inner tube E marked black in Figures 1 and 2 is
vulcanized and manufactured of such material as not to increase its large diameter,
the consequence being that the tube is flattened and presses hard upon the
junctions or overlapping of the edges of the cover B so as to practically seal the
edges against the escape of air. When this has been effectually done the outer
casing B whether it contains an inner lining tube or not is then inflated through
the passage tube e2 Figure 4 to the required pressure and this may be much less
or more than the pressure in the inner tube E. The wheel rims A are shown
different in sections at Figures 3 and 4 to Figures 1 and 2 but my tyre is
applicable to many different sections of rims.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
First. The improvement in pneumatic tyres for cycles and other wheels
consisting of a cover B with the edges either abutted or overlapped and sealed and
held in position by the independent pressure of the small inner tube E which is
made so as not to extend to any material extent by the portions el the outer
casing B being afterwards inflated either direct or by means of a lining tube
with the provision for separate inflation substantially as herein set forth and shown
upon the drawings.
Second. A pneumatic tyre kept in the rim by an inner sealing tube with the
outer tyre separately and independently inflated substantially as herein set forth
and shown.
Dated the 25th day of January 1897.
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent for Applicant.