Improvements relating to Pneumatic Tyres, and to Means for Repairing the same when Punctured.
Year: 1895

page_text: Date of Application, 19th Oct., 1895
Complete Specification Left, 8th July, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL SPECIFICATION.
[Communicated from abroad by ERNEST WILLARD YOUNG, of 339 West Lake
Street, Chicago, Illinois, United States of America, Mechanic.]
Improvements relating to Pneumatic Tyres, and to Means for
Repairing the same when Punctured.
I, DAVID YOUNG, Patent Agent, of the Firm of D. Young & Co, of
11 and 12 Southampton Buildings, London, W.C., do hereby declare the nature
of this invention to be as follows:-
My invention rolates to improvements in pneumatic tyres and has for its
object to provido simple, economical, and efficient means for repairing punctures
in such tires.
With icference to a pneumatic tire composed of a sheath or casing, and an
inuer, removable an-tube, my invention contemplates the provision of a normally
flattened, uninflatable tube of thin rubber,, o. like suitable material, arranged
longitudinally within the inner air-tube and normally maintained next to the base
of the tire, such normally flattened and uninflatable tube, being at all times in open
communication with the interior of the inner air-tube, and being termed by me
a patching tube. One flattened side of this patching tube is permanently adjacent
to the base of the tire, while the opposite flattened side of such patching tube is
temporarily adjacent to the side first mentioned, and 'is thereby out of the way of
puncture. Should a puncture be made through the tread of the tire, a small
quantity of cement can be injected through such puncture, and after deflating the
tire, if deflation has not already taken place, the punctured tread portion can be
depressed upon the side of the patching tube which is exposed within the inner
air-tube,, and thereby permit the previously introduced cement to cause an
adherence between the punctured 'portion of the tread and a corresponding portion
of the patching tube.
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Upon then inflating the tire, a portion only of the side of the patching tube
which is exposed within the inner air-tube, will be picked up, and since the interior
of the patching tube is in open communication with the interior of the inner air-
tube, the picked-up portion of the patching tube which is now cemented to the
punctured portion of the tire,,will not be forced away therefrom, since ลา
equilibrium of air-pressure will exist between' such' air-spaces 'as will exist at
opposite sides of all of the raised portion of the patching tube, excepting such
pait of said raised' poition as is directly cemented to the punctured portion of
the tire.
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The patching tube can be placed in open communication with the interior of
the inner air-tube, by leaving the ends' of the patching tube open, but preferably,
I form gaps at points along the longitudinal edges of the flattened patching tube.
I may also cement one side of the flattened patcling tube to the inner wall of
the tire at the base of the latter.
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By the foregoing arrangement, one side of the patching tube stands in readiness
as a continuous scaling web normally away 'flom' the region of puncture, but
capable of being picked up at any point along its length The inflation of the
air-tube has no effect upon the patching tube' and the latter is non-inflatable owing
to the fact that it is in open communication with 'the interior of the an-tube,
thereby further distinguishing it from various prior patents of other parties

page_text: proposing to either normally maintain a sealing tube or web against the inner wall
of the tie by inflation, or to provide an inflatable sealing tube which is normally
deflated, and which in the event of a puncture m the tire is to be inflated by an
inflating device or devices supplemental to the device employed for inflating the
uner an-tube.
My invention is also applicable to pneumatic tues constructed without a
removable inner an-tube.
Dated the 19th day of October 1895.
Improvements relating to Pneumatic Tyres, and to Means for
Repairing the same when Punctured.
I, DAVID YOUNG, Patent Agent, of the Firm of D Young & Co, of
11 and 12 Southampton Buildings, London, W.C, 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 :-
My invention relates to improvements in pneumatic tyres and has for its
object to provide simple, economical and efficient menus for repairing punctures
in such tyies.
In a pneumatic tire embodying this invention, the air-chamber contains a
normally flattened epan tube which is in open communication with the all-
chamber, and arranged to normally he adjacent to the base of the tire so as to be
out of the way of puncture, and at the same time afford two flattened tube sides
which can he successively picked up and cemented to the wall of the au-chamber
at the tread side of the tire, for the purpose of closing punctures. The provision
of this normally flattened repair tube involves economy in manufacture, owing to
the readiness with which it can be diawn in the tuc. It also provides between
the two sides of the epan tube a form of flexible connection which admits of said
sides being picked up without perceptible resistance, and which also does away
with tension tending to draw away such flattened side portions of the repair tube
when cemented to the inner wall of the tue at the tread side thereof, it being
observed that when cement is introduced through a puncture in the tread, and the
latter pressed down so as to engage and pick up one of the sides of the tube, it is
most desnable to avoid both resistance to the picking up of such side of the tube,
and tension the cou after it is piched up, since other wise, the portion of the tube
newly cemented to the inner wall of the tue at the tread side of the latter, would
be liable to separation from such met wall, before setting of the cement.
One side of the normally flattened patching tube may, if desired, be cemented
to the one wall of the an-chamber at the base portion of the tire.
In the accompanying drawings,—
Figure 1 is transverse section through a double tube pneumatic the seated
upon a wheel-m and embodying this invention.
Figure 2 18 a like view of the air-tube containing the repair tube.
Figure 3 is a plan view of a portion of the repair tube.
Figure 4 is a section taken longitudinally through a portion of the tire, with
what may be termed the upper flattened side of the repan tube (that is to say
the side nearest the tie-tiead) picked up and cemented to a punctured portion of
the tue.
Figure 5 is a section taken transversely through the tire, with both flattened

page_text: sides of the repan tube picked up and held by cement, for the purpose of closing
double punctures.
Figure 6 is a view similar to Fig 1, showing one side of the patching tube
cemented to the inner wall of the ant chamber at the base portion of the tire.
The sheath or casing A, of the tue can be of any desired or suitable type, and,
It may contain an an-tube B, the air-chamber in such construction of tile being,
formed within the au-tube The normally flattened repau-tube C, is flexible, and
preferably of thin iubber. When thus made of rubber, it can be vulcanized in a
Hattened condition. When arranged within the au-chamber of the tue, the sand'
repau tube les adjacent to the base of the tire, and it will normally continue in
such position, regardless of the inflation of the tire, as illustrated in Fig. 1. The
repair tube is provided with ports, formed by slits, notches or like aperties, so as
to provide an-passage between its interior and the au-chamber, a simple and
desirable way being to provide it with ports c along its longitudinal edge porticus,
so as to leave the flattened sides of the repau tube intact.
.
When a puncture occurs through the tread of the tire as at a, Fig. 4, cement
can be introduced through the puncture, and by then depressing such portion of the
tue to a suitable extent it will engage the upper side of the repair tube, and the two
will adhere together by reason of the previously introduced cement
Upon again
distending the tie a portion of the upper side of the repan tube will be picked up
as in Fig 4, and by reason of the intercommunication established between the
interior of the repair tube and the air-chamber, the inflation of the tire will not,
force the picked up portion of the repan tube away from the punctured portion of
the tne, since an equilibrium of air pressure will be established between the space
at opposite sides of all of such picked up portion of the repan tube save that which
is cemented to the punctured portion of the tne.
Where punctures occuring in the tue are not close together, various poitious
of the upper side of the repair tube can be picked up as a means for patching the
damaged parts of the the But should a second puncture occur in close proximity
to one previously made, and thereby extend through a picked up portion of the
upper side of the repan tube, as at a' in Fig 5, the lower side of the repair tube
can be cemented to and picked up. by the punctured portion of the upper side of
such repair-tube, as in said figue
By thus providing a noimally flattened repair-tube, the two layers of patching
material provided by such repan-tube ale umted by the bent longitudinal edge
portions of said tube. These bends in the elastic rubber repair tube aic
obviously so formed and arranged as to avoid any resistance to the picking up of
the upper side of the repair-tube, since the picking up of such side of the tube will
simply open the bends or folds c' in a natural way. Also, by providing such repair-.
tube and ai ranging it with free longitudinal edge portions, there will be no
opposition to the picking up of the lower side of the repair tube as in Fig. 5.
In Fig. 6, one side of the patching tube is shown cemented to the base side of
the tue, the cement union being indicated by the heavy line E
In such case undesirable slippage of the patching tube within the air chambei is
prevented, although the use of the tube as a double patching means is to a certain
extent precluded.
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This repair-tube can also be employed in the " hose-pipe or one tube con-
struction of tire, as will be obvious without further illustration, it being understood
that in such tne, the inner an tube is replaced by a tubular rubber layer secured to
the next adjacent tubular layer of the tire.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed as communicated
to me by my foreign correspondent, I declare that what I claim is
1. A pneumatic tire containing within its air-chamber a normally flattened
repair tube adapted to communicate with the air-chamber and arranged to lie in a
flattened condition normally at the base of the tue regardless of the inflation of

page_text: the air-chamber, the said repair tube having free bent edge portions and having its
upper and lower flattened sides, free to be picked up and held by cementation for
the purpose of closing punctures, substantially as described.
2. A pneumatic tire comprising a sheath or casing, an inner air-tube, and a
normally flattened repair tube adapted to communicate with the interior of the
air-chamber and arranged to lie in a flattened condition adjacent to the base of the
tire regardless of the inflation of the air-tube, said repair tube being free along
its longitudinal edges and having its upper and lower sides free to be picked up
and held by cementation for the purpose of closing punctures, substantially as
described.
3. A pneumatic tire containing within its au-chamber a normally flattened
repair tube arranged to lie in a flattened condition adjacent to the base of the tire
regardless of the inflation of the air-chamber, and having its longitudinal marginal
portions fiee and provided with ports, substantially as described.
4. A pneumatic tire containing within its an-chamber à normally flattened
repair tube aanged to lie in a flattened condition adjacent to the base of the tire
regardless of the inflation of the an-chamber, and having its longitudinal maiginal
portions free and provided with notches e, substantially as described.
5. A pneumatic tire containing within its air-chamber a normally flattened
repair tubo adapted to communicate with the air-chamber and arranged to lie in a
flattened condition adjacent to the base of the tire regardless of the inflation of the
air-chamber, the said tube being cemented to the inner wall of the air-chamber at
the base portion of the tire, and having free longitudinal marginal portions,
substantially as described.
6. A pneumatic tire containing within its air chamber a normally flattened
repair tube arranged to lie in a flattened condition adjacent to the base of the tire
regardless of the inflation of the air-chamber, the said tube being cemented to
the inner wall of the air-chamber at the base portion of the tue, aud having
its longitudinal marginal portions free and provided with ports, substantially as
described.
Dated the 8th day of T'
1000
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.