Improvements in Apparatus for Repairing Pneumatic Tires.
Year: 1897

page_text: Date of Application, 27th Apr., 1897-Accepted, 5th June, 1897
COMPLETE SPECIFICATION.
Improvements in Apparatus for Repairing Pneumatic Tires.
I, JULIAN BENNO WOLF, of No. 53 Cranston Street, in the City of Providence,
County of Providence, and State of Rhode Island, United States of America,
Manufacturer, do hereby declare the nature of my 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 has reference to repairing the pneumatic wheel-tires, when the
same have been punctured, by inserting a plug into the hole formed by the
puncturing of the tire.
The object of this invention is to provide a plug that can be readily inserted
into the punctured tire so as to close the hole and repair the tire.
The invention consists in the peculiar and novel construction of the plug and
the device by means of which it can be readily inserted, as will be more fully set
forth hereinafter.
Figure 1 is a side view of the stretching-button and skewer.
Figure 2 is a perspective view of the stretching-bar used in connection with the
button and skewer.
Figure 3 is a side view and Figure 4 a vertical sectional view of the rubber
plug.
Figure 5 is a side view enlarged and Figure 6 a top view of the enlarged metal-
tip used on the rubber plug.
Figure 7 is a vertical sectional view of the extended plug inserted into the tire.
Figure 8 is a sectional view of part of a pneumatic tire in which a punctured
hole is closed by my improved plug.
Similar numerals of reference indicate corresponding parts in all the figures.
The method consists in stretching out a rubber plug lengthwise, so that it can
be readily entered into the hole which has been punctured in the pneumatic tire,
and securing the rubber plug by allowing the same to contract in length whereby
it will expand laterally and fill the hole in the tire. To accomplish this I use a
rubber plug perforated nearly to the tip, as is shown in Figures 3 and 4 in which
9 indicates the body of the plug, 10 a projecting flange on the upper end, 11 a hole
extending nearly to the end of the tip 12,-this tip is covered with the light,
preferably metal, cover 13.
The device for extending and inserting the plug consists of the button 14
provided with the annular rim 15 in which are formed the bayonet slots 16, on
opposite sides to the center of the button is secured the wire-skewer 17 having a
blunt end. The stretching-bar consists of the ring 18 connected by the arms 19-19
to the bars 20-20.
To extend the plug lengthwise and thereby contract its diameter, the plug is
inserted into the ring 18 of the stretching-bar, the skewer 17 is now inserted into
the hole 11 in the plug and pushed down until all the parts assume the positions
shown in Figure 7, when the arms 19-19 have entered the slots 16 a partial
turn of the button secures the button to the stretching-bar and holds the plug in
the extended position, as shown in Figure 7.
The metal covering 13 of the tip 12 prevents the penetration of the skewer
through the end of the plug and facilitates the entering of the plug into the
puncture. Before the extended plug is entered into the hole I prefer to cover it

page_text: with a naphtha or other rubber cement and, when entered, the button is turned to
release the cap 14 from the stretching-bar and the plug is allowed to gradually
contract lengthwise, whereby it is expanded sidewise, the projecting plug is
now cut off, as indicated in Figure 8, and the sectioned portion is firmly held in
the tire.
The device and a number of plugs can be carried by a bicycle rider and
punctures readily repaired in a short time.
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 :-
Claim I. A device for closing a puncture in a pneumatic tyre, consisting in a
body of rubber one end of which is pointed, the other end provided with an annular
projecting flange, and a central hole extending from the flanged end nearly to the
pointed end; whereby the body of the rubber may be contracted in diameter so as
to enter the puncture by holding the flanged end and elongating the rubber body
by means of a wire inserted into the central hole and exerting pressure on the wire,
as described.
2. The devices for inserting the rubber plug into a tire, consisting of the
stretching-bar baving the ring 18 and arms 19-19 connecting the ring with the
bars 20-20, and the button 14 provided with the rim 15 having the bayonet
slots 16-16 and the central skewer 17, as described.
7. A plug, adapted for repairing punctured tires, consisting of the tubular
body 9, the flange 10, the tip 12 with the metallic covering 13, and provided
with the axial hole 11, adapted for the reception of a skewer, whereby the plug
may be extended lengthwise to facilitate its entrance into the puncture, as
described.
Dated the Seanad 1...
C A
1
A D 1007
JULIAN BENNO WOLF.
Haseltine, Lake & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.