Improvements in and relating to Pneumatic or other Tyres.
Year: 1892

page_text: Date of Application, 4th Oct., 1892
Complete Specification Left, 4th July, 1893-Accepted, 12th Aug., 1893
PROVISIONAL
SPECIFICATION.
Improvements in and relating to Pneumatic or other Tyres.
JAMES HAROLD BARRY of 4 Cadogan Terrace Victoria Park in the County
of Middlesex Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in and relating to pneumatic or other
tyres and is for obviating the inconvenience arising from riding with a punctured
or otherwise injured tyre, and for giving greater elasticity to all existing tyres.
I accomplish this by making the tyre with a supplementary chamber either below,
or above, or both when desirable.
I may also to give greater elasticity, and ease in riding, attach to existing tyre
a pneumatic or other chamber, on the outer periphery by lacing, studs, springs or
other means. A wearing piece may be attached in a similar manner.
Should the lower chamber of the doubled chambered pneumatic tyre become
punctured or otherwise injured, the top chamber being perfectly separate, from the
lower will not be affected, and is still protected by the depleted chamber, which
acts as a wearing piece, and may be ridden without repairing.
The lower chamber which is preferably crescent shaped may be attached to any
existing tyres or wheels by the means before stated, but the whole can be made at
one operation.
I may also make my tyre with three chambers, one above the other. The
chambers may be either pneumatic, cushion, or otherwise.
I may fill the tyre by one or more valves.
To fill the chambers by one operation I fit a non-return valve between them,
but each chamber may have a separate valve attached.
The inner surface of the supplementary tyre may be roughened to prevent
slipping when attached to any existing tyre.
Dated this 4th day of October 1892__
LE FEVRE & Co.,
26, Budge Row, E.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic or other Tyres.
I, JAMES HAROLD BARRY of 4 Cadogan Terrace Victoria Park in the County
of Middlesex, Engineer, do hereby declare the 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 relates to improvements in and relating to pneumatic or other
tyres and is for obviating the inconvenience arising from riding with a punctured
or otherwise injured tyre, and for giving greater elasticity to all existing tyres.

page_text: I accomplish this by making the tyre with a supplementary chamber either below
or above, or both when desirable. I may also to give greater elasticity and ease
in riding, attach to existing tyres a pneumatic or other chamber on the outer
periphery by lacing, studs, springs or other means. A wearing piece may be
attached in a similar manner. Should the lower chamber of the double chambered
pneumatic tyre become punctured or otherwise injured the top chamber being
perfectly separate from the lower will not be effected and is still protected by the
depleted chamber which acts as a wearing piece and may be ridden without
repairing.
The lower chamber which is preferably crescent shaped may be attached to any
existing tyres or wheels by the means before stated but the whole can be made
at one operation.
I may also make my tyre with three chambers one above the other. The
chambers may be either pneumatic or cushion.
I may fill the tyre by one or more valves.
To fill the chambers at one operation I fit a non-return valve between them but
each chamber may have a separate valve attached.
The inner surface of the supplementary tyre may be roughened to prevent
slipping when attached to any existing tyre.
To enable my invention to be more readily understood & carried into effect I
will proceed to describe the same with reference to the accompanying drawings in
which,
Fig. 1. is a longitudinal section of the tyre showing feed valve to the lower
chamber.
Fig. 2. is also a longitudinal section of the tyre showing the feed valve supplying
the upper tube.
Fig. 3. is a cross or transverse section of the tyre with feed valve to the
lower chamber, and shewing a greater pressure of air in the inner tube or upper
chamber.
Fig. 4. is also a cross or transverse section of the tyre with feed valve for
inflating the lower chamber, and showing a greater pressure of air in the same.
Fig. 5. is the cross or transverse section of the cover made to contain the air
tube and attachable to any tyre.
Fig. 6. is a cross or transverse section of the tyre with inner tubes complete,
with lower tube or chamber inflated and upper tube partly depleted, the division
between the chambers may be elastic or non-elastic material.
A. Figs. 1, 2, 3 and 4 is the lower chamber.
B. Figs. 1, 2, 3, 4 and 6 is the inner tube or upper chamber.
C. Figs. 1, 3 & 4 is the feed valve for lower chamber.
D. Fig. 2 is the feed valve for inner tube or upper chamber.
E. Figs. 1, 3 & 4 sleeve in the inner tube B through which the valve passes to
supply lower chamber or tube with air.
F and F Figs. 5 & 6 are the hooked flaps to retain the lower tube H. Fig. 6
and which may be made of an elastic or non-elastic material.
G. Figs. 1, 2, 3, 4 & 6 is the rim.
In the event of the lower tubes or chambers A. and H. becoming punctured or
otherwise. injured the upper tubes or chambers B can be further inflated and form
of themselves a perfect tyre.
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 I am aware
that it has been previously proposed to divide the inner tube of pneumatic tyres,
by one or more webs or partitions for the purpose of forming two or more
separate air chambers and I do not desire to claim such construction; but what I
claim is :-
1. A pneumatic tyre made with a supplementary chamber on the outer periphery
as described and set forth in the foregoing Specification.

page_text: 2. A pneumatic tyre the cover of which is arranged with flaps to be secured
by hooks, lacing or other means and to contain an air tube independent of the
upper tube.
3. A pneumatic tyre the lower chamber of which is moulded directly in the
LE FEVRE & Co.,
26, Budge Row, Cannon Street, London, E.C.,
Agents for the Applicant.