Improved Means for Closing Punctures in Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 25th Mar., 1896
Cassification Loft 20th Sept.
1896-Accepted, 13th Feb., 1897.
PROVISIONAL SPECIFICATION.
Improved Means for Closing Punctures in Pneumatic Tyres.
THOMAS DUFFILL BELL 7 St. Sampson Square York Cycle Agent do hereby-
declare the nature of this invention to be as follows:-
A band composed of pure silk rubber-coated, the edges of the band to be
solutioned tightly to the air tubes of pneumatic tyres silk face to the air tube.
Deted this 23rd day of March 1896.
THOMAS D. BELL,
7 St. Sampson Square, York..
COMPLETE
ECIFICATION.
Improved Means for Closing Punctures in Pneumatic Tyres.
I, THOMAS DUFFILL BELL, of 7, Saint Sampson Square, York, in the County-
of York, Cycle Agent, 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 means for obviating the ill effects arising from puncturing
in the inner or air tube of pneumatic tyres, that is to say, to means whereby a
puncture formed in the inner or air tube of such a tyre is automatically closed so a&s.
to prevent the escape of the air enclosed in the said inner or air tube."
According to my invention I provide a non-elastic or inextensible band, (herein-
after called "my band ") formed of a strip of rubber to one face of which a strip
of pure silk fabric is partly or wholly cemented or vulcanized. My band is
cemented or vulcanized to the inner or air tube of the pneumatic tyre while.
this latter is just sufficiently inflated to cause it to take its shape.
To enable my invention to be fully understood I will describe it by reference to.
the accompanying drawing, in which :-
Figure i is a plan of my band:
Figure 2 is a section on the line 2-2 Figure 1:
Figure 3 is a perspective view of a portion of the inner or air tube of a pneumatic-
tyre having my band applied to it.
a is the strip of rubber and 6 is the strip of pure silk fabric cemented or vulcanized
to one face of the rubber, the said strip b being of less width than the rubber
strip a so as to leave an edge of the latter on each side which edge is advantageously
tapered as shewn at c, c, Figure 2, to allow of it being more easily connected to the
air tube but the strip may be of the whole width of the rubber.
To apply my hand to the inner or air tube of a pneumatic tyre the said inner
tube d, Figure 3, is inflated just sufficiently to give it its shape and the tread
portion is thoroughly cleaned so as to remove any sulphur. My band is then
cemented on the rubber side with any india-rubber solution and fixed to the tread
portion of the tube d which is then allowed to remain in its partially inflated
condition until the solution has thoroughly dried.

page_text: It will be obvious that my band can be fixed to the inner tube d with the silk
strip b, (instead of the rubber strip a) in contact with the outer surface of the inner
tube d and it will also be obvious that I can vulcanize my band on to the inner
tube d instead of cementing it.
With this arrangement when the tube d is inflated the tread portion of the same
is prevented from stretching by my band so that, if the portion of the tube d
covered by the strip of silk le punctured, the hole formed thereby in the tube d
will be automatically and immediately closed.
The inner or air tube d is advantageously provided with a strip of canvas or
other suitable fabric for protecting it from the action of the spokes and valve
and also to serve as a check against the undue straining of my band.
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 :-
1. In pneumatic tyres providing the tread portion of the inner or air tube with a
band composed of a strip of rubber to one face of which is cemented or vulcanized
a strip of pure silk fabric, the said band being applied to the air tube when the
said band is in its normal condition and the inuer or air tube of the pneumatic tyre
is inflated just sufficiently to give it its shape, substantially as, and for the purpose,
herein before described.
2. The manufacture and use for pneumatic tyres of bands composed of a strip
of rubber to one face of which is cemented or vulcanized a strip of pure silk fabric,
substantially as described and illustrated in the accompanying drawing.
3. The manufacture and use of pneumatic tyres wherein the inner or air tube is
provided with a band of the kind herein before described and illustrated in the
accompanying drawing.
ليوم
1004
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.