A Tool for Repairing Pneumatic Tires.
Year: 1897

page_text: Date of Application, 4th Dec., 1897-Accepted, 29th Jan., 1898
COMPLETE SPECIFICATION,
A Tool for Repairing Pneumatic Tires.
I, MARIUS EDWARD GRISWOLD, of 595, Madison Street, Chicago, in the County
of Cook, and State of Illinois, United States, America, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
The object of my invention is to provide a tool, compact and simple, with which
a rubber plug may be inserted into a puncture in the tire without enlarging the
puncture and without removing the tire.
It consists of an outer expansible inserting tube, which acts as a guide, and
expands the puncture, and an inner compressible carrier plunger, which is forced
through it and carries a rubber plug into the tire, and is then withdrawn leaving
the plug in the puncture.
It further consists of details hereinafter more fully described and particularly
pointed out in the claims.
Figure 1 is a side view of my invention showing the plunger holding the plug,
and part way protruding.
Figure 2 is a longitudinal sectional view of Figure 1.
Figure 3 is a detail view of the outer guide tube.
Figure 4 is a detail view of the plunger and cap.
Figure 5 is a view of the rubber plug.
Figure 6 is an end view of Fig. 1, with the inner tube shown in section.
A represents the outer tube, B the plunger, C the cap, and D the plug. The
tube A has a groove a extending a short distance longitudinally from the end
upon which the cap C fits. The cap has a tongue c which fits into a and prevents
the cap from turning. The plunger B has a feather b upon it which fits into the
way din the cap C thereby preventing the plunger from turning in the cap.
The tube A is tapered off into a funnel shaped end E, which is cut into a number
of sections, longitudinally, in order that it may be readily expanded as the plunger
is forced into it.
The plunger B is also split up longitudinally at the end F in a number of
places, and the sections slightly tapered off. The end E is tapered off to a fine
point, so as to be readily inserted into a small hole. The end F is expanded in
order that the plug D may be inserted the more easily.
The operation of my invention is as follows:-
The rubber plug 1) is first inserted into the end of the plunger B, after being
suitably prepared with cement, the guide tube A is then inserted in the puncture
in the tire, which is to be repaired, and the plunger carrying the plug forced down
through A, being partially compressed itself, and compressing the rubber plug,
and partially expanding the tube A and the puncture in the tire. In this way the
plug is forced into the inner cavity of the tire, where the head of the plug expands
completely covering the puncture on the inside. The tool may then be withdrawn,
first drawing out the plunger and then the tube A, leaving the plug with its head
071

page_text: within the tire and its stem in the puncture, making a tight and perfect patch upon
the inside of the tire.
I prefer to set A and B relative to one another, so as to break joints, that is,
bringing the tongue of one opposite the slit in the other, in order that the plug
may be more easily inserted.
This I accomplish by setting the cap C upon A in the proper position, and B
is prevented from turning relatively to A, as before described.
The size of the plunger B may be varied according to the size of the puncture
to be mended and the plug to be inserted.
The plug is made of soft rubber so that it may be easily compressed and inserted
and will then expand.
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:
1. The herein-described tool for repairing pneumatic tires, consisting of the com-
bination of the outer tube A, having the expansible tapered end E and the inner
plunger B, by which the plug is carried into the tire, having the compressible
end F. with longitudinal tapered sections; all substantially as shown and described.
2. The herein-described tool for repairing pneumatic tires, consisting of the
combination of the outer tube A, having the expansible tapered end E, the inner
plunger B, by which the plug is carried into the tire, having the compressible
end F, with longitudinal tapered sections, and the cap C forming a guide by which
A and B are prevented from turning upon one another, and thereby caused to break
joints; all substantially as shown and described.
3. The herein-described tool for repairing pneumatic tires, consisting of the com-
bination of the outer tube A. having the expansible, tapered end E, and the groove a,
the plunger B by which the plug is inserted, having the feather b, and the cap C
having the tongue c and the way d; all substantially as shown and described.
Dated this 3rd day of December 1897
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.