Improvements in Compositions for Repairing Leaks in Pneumatic Tyres for Vehicle Wheels.
Year: 1896

page_text: Date of Application, 14th Aug., 1896
Complete Specification Left, 14th May, 1897-Accepted, 3rd July, 1897
VISIONAL SPECIFICATION.
Improvements in Compositions for Repairing Leaks in Pneumatic
Tyres for Vehicle Wheels.
I, CHARLES SUMNER HOWE, of 103 Cornell Street, Cleveland, Ohio, United
States of America, Professor of Mathematics, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in compositions for repairing leaks in
pneumatic tyres for vehicle wheels and has for its object a fluid which is to be
introduced into the tyre and which will have no injurious effect on the india-
rubber of the tyre but will be capable of automatically sealing or repairing any
small cut or puncture that may be produced in the tyre, thus preventing leakage
and rendering the tyre air tight.
My present invention is a further improvement on that described in the specifica-
tion of prior Letters Patent No. 16365 dated 23rd July 1896 and consists in sub-
stituting for the mineral gelatinous substance held in suspension in the heavy
non-oleous liquid other substances which may be classified as follows, viz.,
(a) gelatinous substances of a non-mineral character, (b) mineral substances of a
non-gelatinous character, and (c) substances which are non-mineral and non-
gelatinous. As examples of the kind of substances I propose to use I may cite
under (a) gum tragacanth, under (b) finely divided silica or iron, and under (c)
sawdust, finely divided cork, and meal. When gum tragacanth is used it will
probably be necessary to soak it in water before mixing it with the glycerine or
other heavy non-oleous liquid. The proportions of suspended matter of the
non-oleous liquid may vary between wide limits but the resulting fluid
should be made so thick as not to flow very readily. I find that the substances
mentioned above answer the purpose of the invention very well being very
effectual in sealing punctures without injury to the india-rubber.
The non-oleous liquid having any of the above named substances in suspension
in it is used in the manner described in the specification above referred to.
Dated this 14th day of August 1896.
HASELTINE, LAKE & CO.,
45 Southampton Buildings, London, W.C
Agents for the Applicant.
Improvements in Compositions for Repairing Leaks in Pneumatic
Tyres for Vehicle Wheels.
I, CHARLES SUMNER HOWE, of 103 Cornell Street, Cleveland, Ohio, in the United
States of America, Professor of Mathematics, do hereby declare the nature of this
Price &d 1

page_text: 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 Compositions for repairing Leaks in
Pneumatic Vehicle Tyres, and it has for its object to provide a liquid which may
be introduced into the tyre for the purpose of blocking or obstructing small cuts
or punctures that may be produced in the tyre,-the action of such liquid being
automatic, and which will have no injurious effect on the India rubber of the
tyre, and will not evaporate within the tyre to any considerable extent.
My present invention constitutes an improvement or modification on that
described in the Specification of prior Letters Patent, No. 16,365, dated July 23rd,
1896, and it consists essentially in substituting for the mineral gelatinous
substance, held in suspsension in the heavy non-oleous liquid, other substances
which may be classified as follows, viz:
(a). Gelatinous substances of a non-mineral character, such as, for instance,
gum, one part, or dextrine, or other form or derivative of starch, one part, water
six parts, glycerine, three parts, or a mixture of gum and dextrine in place of either
gum or dextrine, such as given above.
(b). Mineral substances of a non-gelatinous character, such as silica, mica, or
other finely divided mineral substance, four parts, and glycerine or other viscous,
non-oleous liquid, ten parts.
(c). Substances which are neither mineral nor gelatinous, such as for instance,
meal, bran, sawdust, or finely divided cork, four parts, and glycerine or other
viscous and non-oleous liquid, ten parts.
Either of the above mixtures, or any similar mixture, is thoroughly agitated
and mixed in some suitable apparatus or device, such as a churn, paint-mill or other
similar apparatus.
I may make a mixture of gum and finely divided organic or inorganic substance,
such as for instance, gum one part, meal, sawdust or mica, four parts, water six
parts, and glycerine, six parts.
When gum tragacanth is used it will probably be necessary to soak it in water
before mixing it with whatever viscous and non-oleous liquid may be used as the
vehicle.
The liquid composition may be introduced into the vehicle tyre, preferably
through the air valve opening of the same, in any suitable manner, and should be
introduced in sufficient quantity to admit of the tyre carrying a quantity of the
liquid with it at all points of the interior of its tread. I find that from four to six
ounces, or more, of the liquid is sufficient for each tyre, according to the size and
interior capacity of the tyre.
Other modes of applying the principles of my invention may be employed for
the mode herein explained. Change may be made as regards the ingredients and
proportions herein disclosed, provided the principles of the invention, such as set
forth respectively in the following claims are employed.
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. A liquid for repairing leaks in pneumatic vehicle tyres, consisting of some
or all of the ingredients recited in the foregoing specification, substantially as set
forth.
2. A liquid for repairing leaks in pneumatic vehicle tyres, consisting of a
viscous liquid containing more or less solid particles in mechanical suspension,
substantially as set forth.
3. A liquid for repairing leaks in pneumatic vehicle tyres which consists of a
viscuous-liquid containing gelatinous substance in suspension, substantially as set

page_text: 4. A liquid for repairing leaks in pneumatic vehicle tyres, which consists of a
viscous non-oleous liquid containing finely divided and non-gelatinous substance in
suspension, substantially as set forth.
CHARLES SUMNER HOWE.
Haseltine, Lake & Co.,
45 Southampton Buildings, London, W.C.
Agents for the Applicant.