Improvements in the Repairing of Cuts, Punctures, and the like in Rubber Goods, and in Plugs or Apparatus therefor.
Year: 1894

page_text: Date of Application, 16th Feb., 1894
Complete Specification Left, 16th Nov:, 1894-Accepted, 22nd Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Repairing of Cuts, Punctures, and the like
in Rubber Goods, and in Plugs or Apparatus therefor.
I, CHRISTIAN HAMILTON GRAY of The Indiarubber, Gutta-percha, and Tele-
graph Works Company Limited, Indiarubber Manufacturer, do hereby declare
the nature of this invention to be as follows :-
This invention relates to the stopping of holes, cuts rents and the like in rubber
goods particularly rubber wheel tyres, and has particular reference to long cuts or
rents which hitherto it has been very difficult if not impossible to efficiently
repair.
According to this invention when a long cut or the like is made in a tyre I cut
out a portion at each end of the cut so as to prevent from running further and
insert a suitable plug preferably shaped to fit both these holes and the cut and also
having internal and external flanges so that when the plug is in place the whole
cut is efficiently plugged and covered. The plug may conveniently take the form
of two circular necked plugs connected by a bar or bridge each plug having a
conical head, these heads also being connected by a bridge the edges of which may
be bevelled off so as to facilitate its passage through the cut in the tyre. At the
back of the necks and bridge I place a suitable flange or cover which is intended
to lie upon the outside of the tyre when the repair is effected. This flange or
cover may be of any desired shape, size, and material, but generally 1 prefer to
make those portions of the plug which have to be forced through the rubber of
harder and less yielding material than the other portions which have not to pass
through it. In repairing a cut with such a plug I should first with a suitable tool
or knife if no tool were accessible form a circular opening or nearly so at each
end of the cut, I should then apply rubber solution to the cut and also to the plug
and force the latter through the cut and holes. As soon as it had passed
sufficiently far in, the internal heads which might be compressed in passing through
the tyre would expand, and the wall of the tyre would lie between the two flanges
of the plug, the distance between which, as well as the size may be adapted to the
requirements of the case.
•
The plug may if desired have more than the above described two plugs or heads
as for example it may be cross shaped and have four, or triangular shaped and
have three, though for an ordinary cut two will be sufficient.
If desired a piece of rubber, cloth, canvas, or other material may be solutioned
down upon the tyre over the plug so as to assist in retaining and hiding it or the
top flange may have canvas or the like embedded in it if desired.
Dated this 16th day of February 1894
W. P. THOMPSON & BOULT,
Agents for the Applicant.

page_text: Improvements in the Repairing of Cuts, Punctures, and the like
in Rubber Goods, and in Plugs or Apparatus therefor.
I, CHRISTIAN HAMILTON GRAY, of The Indiarubber, Gutta-percha, and Tele-
graph Works Company Limited, Indiarubber Manufacturer, of Silvertown, in the
County of Essex, 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 the stopping of holes, cuts rents and the like in rubber
goods particularly rubber wheel tyres, and has particular reference to long cuts or
rents which hitherto it has been very difficult if not impossible to efficiently
repair.
The invention will be best understood by reference to the accompanying drawings,
. in which
Figure 1 is an elevation and
Figure 2 a plan of one form of plug used according to this invention.
Figure 3 is a section on the line 3-3 of Figure 1.
Figures 4 and 5 are plans of two other forms of the plug, and
Figure 6 is a section on the line 6-6 of Figure 5.
Like letters indicate like parts throughout the drawings.
According to this invention when a long cut or the like is made in a tyre I cut
out a portion at each end of the cut so as to prevent it from running further and
insert a plug such as is represented in Figures 1, 2 and 3, preferably shaped at A
to fit both these holes and at B the cut connecting said holes, and also having
internal flanges C and external flanges C¹ so that when the plug is in place the
. whole cut is efficiently plugged and covered. The plug may as shown conveniently
,take the form of two circular necked plugs connected by a bar or bridge Beach
plug having a conical head D, these heads also being connected by a bridge D¹
the edges of which may be bevelled off so as to facilitate its passage through the
cut in the tyre. At the back of the necks A and bridge B I place the before
mentioned flange or cover C₁ which is intended to lie upon the outside of the tyre
, when the repair is effected. This flange or cover may be of any desired shape,
size, and material, but generally 1 prefer to make those portions of the plug, for
example C D D', which have to be forced through the rubber of harder and less
yielding material than the other portions which have not to pass through it. In
repairing a cut with such a plug I should first with a suitable tool, or with a
knife if no tool were accessible form a circular opening or nearly so at each end
of the cut, I should then apply rubber solution to the cut and also to the plug and
force portions C D D' of the latter through the cut and holes. As soon as it had
passed sufficiently far in, the heads D and flange C which might be compressed
in passing through the tyre would expand, and the wall of the tyre would lie
between the two flanges C C' of the plug; the distance between the flanges C C¹
and between the necks A as well the size or dimensions of the various parts may
be adapted to the requirements of se.
The plug may if desired have more than the above described two plugs or
heads for example, as shown in Figure 4 it may be triangular shaped and have
three, or it may be cross shaped and have four though for an ordinary cut two will
be sufficient.
Instead of the substance connecting together as it were the two (or more) plugs,
being of smaller dimensions than these plugs, the dimensions of the plugs may be
maintained throughout the device the result being a plug of elongated or approxi-
mately oval form such as is shown in Figures 5 and 6 or triangular or cross-shaped
form according to the number of plugs or branches employed.

page_text: If desired a piece of rubber, cloth, canvas, or other material may be solutioned
down upon the tyre over the plug so as to assist in retaining and hiding it, or the
top flange may have canvas or the like embedded in it if desired.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;-
1. The employment for stopping holes punctures or the like in rubber goods of
a plug having a neck of elongated or approximately oval or triangular or cross-
shaped form substantially as described and illustrated in the accompanying
drawings.
2. In a plug for stopping holes punctures or the like in rubber goods the com-
bination with a neck and flange of a head composed of harder material than the
neck and flange substantially as described.
3. A plug for stopping holes punctures or the like in rubber goods comprising
two or more necks such as A and one or more bridges such as B connecting them
substantially as described and illustrated in the accompanying drawings.
4. The employment for stopping holes punctures or the like in rubber goods
of a plug constructed substantially as described and illustrated in Figures 12 and 3
of the accompanying drawings.
5. The employment for stopping holes punctures or the like in rubber goods of
a plug constructed substantially as described and illustrated in Figure 4 of the
accompanying drawings.
Dated this 15th dow of Naember 1904