Year: 1897

page_text: I, CUTHBERT PHILIP WARNER, of Norton, in the County of Durham, Analytical
Chemist, do hereby declare the nature of this invention to be as follows:-
This invention relates to a paste or composition for automatically closing punctures
in the air tube of a pneumatic tyre.
The object in view is to provide a composition which is specially adapted for this
purpose in these several respects namely: that the composition adheres to the air
tube but does not injure the rubber thereof; does not add materially to the weight of
it, 2 oz. being sufficient for an ordinary tyre instead of double that quantity as
hitherto used, and the composition remains in a condition which is effective for the
purpose for a considerable length of time.
I am aware that solutions and compositions have been devised and used for this
purpose with more or less success so that when a puncture occurs, the solution or
composition is sucked into the puncture by the out rushing air, and the puncture is
thus automatically sealed. The essence of my invention will therefore be found in
the ingredients made use of in effecting an improvement in such compositions on the
lines hereinbefore set forth.
In carrying out my invention I form a paste or composition in which cork reduced
to minute particles or a high degree of fineness is mixed with an extract of saccharose
or sucrose in the condition of what is commonly termed glucose. This is pumped
into the air tube until the internal surface thereof is smeared well over with it.
The
viscuous or adhesive nature of the glucose causes it to adhere to the rubber of the
tube and to hold in mechanical suspension the particles of cork which being absorbent
become soaked with it. Each particle of cork may be regarded as a plug which is
held in readiness by the glucose to be sucked into a puncture which occurs at that
part of the tube it happens to be in contact with, by the out rushing air by which the
puncture is automatically sealed up the cork continuing to occupy the puncture as
an air tight plug. The mixture may also contain bone dust which readily adheres to
the glucose and as it can be reduced to greater degrees of fineness than cork is useful
in plugging very small holes.

page_text: An Improved Composition for Closing Punctures in
Pneumatic Tyres.
I, CUTHBERT PHILIP WARNER, of Norton, in the County of Durham, Analytical
Chemist, 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 a paste or composition for automatically closing
punctures in the air tube of a pneumatic tyre.
The object in view is to provide a composition which is specially adapted for this
purpose in these several respects, namely,-That the composition adheres to the air
tube but does not injure the rubber thereof: does not add materially to the weight
of it, 2 to 3 oz. being generally sufficient for an ordinary tyre instead of double that
quantity as hitherto used, and the composition remains in a condition which is
effective for the purpose for a considerable length of time.
I am aware that solutions and compositions have been devised and used for this
purpose with more or less success, so that when a puncture occurs the solution or
composition is sucked into the puncture by the out rushing air, and the puncture is
thus automatically sealed. The essence of my invention will therefore be found in the
ingredients made use of in effecting an improvement in such compositions on the
lines hereinbefore set forth.
In carrying out my invention I form a paste or composition in which cork reduced
to minute particles of a high degree of fineness is mixed with an extract of saccharose
or sucrose in the condition commonly termed glucose, a little water being added to
the cork to make it swell if desirable. The composition so formed is pumped into the
air tube until the internal surface thereof is smeared well over with it. The viscuous
or adhesive nature of the glucose causes it to adhere to the rubber of the tube and to
hold in mechanical suspension the particles of cork which being absorbent
become soaked with it. Each particle of cork may be regarded as a plug which is
held in readiness by the glucose to be sucked into a puncture which occurs at that
part of the tube it happens to be in contact with the out rushing air being the agent
by which the puncture is thus automatically sealed up; the cork continuing to
occupy the puncture as an air tight plug. The mixture may also contain bone dust
which readily adheres to the glucose and as it can be reduced to a greater degree of
fineness than cork is useful in plugging very small holes.
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 :-
A composition for automatically closing up punctures in the air tube of a
pneumatic tyre in which finely ground cork with or without the addition of bone dust
is used as the essential ingredient in combination with an extract of saccharose or
sucrose in the condition of glucose the composition being constituted and applied
substantially as and for the purpose as herein before specified.
Did the ot
1000
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees and Hull,
Agent for the Applicant.