Improvements in Patches or Means for the Repairing of Pneumatic Tyres and like Inflating Articles
Year: 1894

page_text: Date of Application, 2nd May, 1894
Complete Specification Left. 25th Jan., 1895-Accepted, 16th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Patches or Means for the Repairing of Pneumatic
Tyres and like Inflating Articles.
I, AARON SMITH CARTWRIGHT, of 75 Ford Street, Hockley, in the City of
Birmingham, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to inside patches or means for the repairing of punctured
or injured pneumatic tyres and like inflating articles, and is an improvement upon a
former Letters Patent granted conjointly to me and Alfred Blackwell and bearing
date the 6th day of July 1892 and numbered 12469.
The said referred-to invention consisted of a mushroom-shaped head, with a
hollow stalk, the former being folded upon itself when introduced through a cut-out
hole in a tyre being repaired. In consequence of having to fold upon itself, the
part to form the patch, in order to introduce the same to the interior of a tyre or
other article, the piercing or hole for its introduction has to be made larger than is
desirable, and further, the hollow stem of the patch, when made, has to be filled
with a loose plug, so as to make the same solid when in the tyre.
According to my present invention, the plug for the closing of the hollow stem is
carried within the interior of the head, which is made hollow, and somewhat of the
figure of a Tam o' Shanter cap.
Thus, my invention consists of a hollow and disc-shaped head, alike unto a round
patch, carried at the termination of a hollow stalk, with the inside crown of the
said disc carrying a plug or closure for the hollow stem, so that when the said head
is pressed flat, the plug, which hangs from the inside crown of it, fits tightly into
the entrance to the hollow stalk and fills up the same solid.
Thus, in repairing a pneumatic tyre, remove the material surrounding the puncture
by a wad or cutting-out punch of a size a little less in diameter than that of the
hollow stalk, then place a peg, stick or mandril up the hollow stem, and by it force
out or distend longitudinally the head, so as to bring the walls into the same general
plane as those of the stem. When in this condition, cement the hole and the inside
of the tyre to be repaired and also cover the inside and outside of the head of the
patch with solution. Then force the same, head foremost, through the hole in the
tyre and then withdraw the stick mandril, when the head expands itself within
the interior of the tyre automatically resumes its normal and disc-shaped flat figure,
and by so doing, forces the plug or closure into the entrance to the hollow stein,
which is closed by it.
By now inflating the tyre, the disc shaped head is flattened between the inside
walls of the outer cover and the outside walls of the inner tube, and as the inside
and outside parts of both patch and tyre are cemented, the repair is made solid and
air tight. The hollow stem standing above the outside surface of the tyre is cut
off flush and covered over, if necessary, by an attached patch of rubber fabric.
Dated this 1st day of May 1894.

page_text: Improvements in Patches or Means for the Repairing of Pneumatic
Tyres and like Inflating Articles.
I, AARON SMITH CARTWRIGHT, of 75 Ford Street, Hockley, in the City of
Birmingham, Manufacturer, 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 inside patches or means for the repairing of punctured
or injured pneumatic tyres and like inflating articles and is an improvement upon a
former Letters Patent granted conjointly to me and Alfred Blackwell and bearing
date the 6th day of July 1892 and numbered 12469.
The said referred-to invention consisted of a mushroom-shaped bead, with a
hollow stalk, the former being folded upon itself when introduced through a cut-out
bole in a tyre being repaired. In consequence of having to fold upon itself the
part to form the patch, in order to introduce the same to the interior of a tyre or
other article, the piercing or hole for its introduction has to be made larger than is
desirable, and further, the hollow stem of the patch, when made, has to be filled
with a loose plug, so as to make the same solid when in the tyre.
According to my present invention the head of the patch is made hollow, and
somewhat of the figure of a Tam o' Shanter cap.
Thus, my present invention consists of a hollow and disc-shaped head, alike unto
a round patch, carried at the termination of a hollow and collapsible stalk, with the
inside crown of the said disc being slightly thickened or carrying a piece of
strengthening canvas to prevent the same tearing on being forced through a
puncture or hole. by a suitable peg or rod.
Thus, in repairing a single tube pneumatic tyre, first place a peg, stick or mandril
up the hollow stem of the patch and by it force out or distend longitudinally the
hollow head, so as to bring the walls into the same general plane as those of the
>tem. When in this condition, cover the inside and part of the outside of the head
of the patch with cementing solution. Then force the same, head foremost, through
the hole in the tyre and withdraw the stick mandril, when the head expands itself
within the interior of the tyre and automatically resumes its normal and disc-shaped
flat figure, and on the tyre being inflated the said head is forcibly impressed over
and around the puncture, and walls of the neck or stem are also collapsed or
flattened together by the pressure of the sides of the puncture. The hollow stem
standing above the outside surface of the tyre is cut off flush and covered over, if
necessary; by an attached patch of rubber fabric.
Figure 1 of the accompanying drawings represents an elevation of a punctured
single tube pneumatic tyre, repaired by an inside patch made according to one form
of my present invention.
Figure 2 represents a vertical section of the same upon the dotted lines x-x,
showing how the stem or neck and head are collapsed and the inside walls of the
same brought close together or into intimate contact.
Figure 3 represents an elevation of a patch separately and in its normal
condition.
Figure 4 represents a vertical section of Figure 3.
Figure 5 is a topside plan of Figure 3, whilst Figure 6 is a horizontal section
upon the dotted lines A Figure 3.

page_text: gure represents a portion of a tyre, having app
ure therem.
Figure 8 represents the operation of applying the patch to the interior of a tyre-
by forcing the head of the said patch through the puncture, or through a slit made
at the puncture by means of a peg or stein upon which the patch is stretched..
In this view the pushing-in peg, and patch and also the tyre are shown in
position.
Figure 9 represents the patch in position within a tyre, but before the walls of
the stem and head are collapsed or brought into close contact by the inflation of the
said tyre.
The same letters of reference indicate corresponding parts in Figures 1 to 9 of
the drawings.
In the patch, is the laterally collapsible and hollow head, with a line or patch a',
of canvas upon the inside crown of it, and a² is a laterally collapsible stem, made in
common or in a piece with the head, which is of india rubber.
6 is the tyre, and is the pin puncture therein. c is a peg or pusher.
Assuming that the tyre has been punctured, as at 6, then force the blade of a
knife through the material of the tyre to an extent indicated in the dotted lines in
Figure 7, or about equal to the breadth of the stem when laterally collapsed. Then
cement the inside of the patch and also part of the outside surface of the patch,.
insert the peg or pusher c, and distend the patch longitudinally, then force the head
part of the patch into the inside of the tyre and withdraw the pusher stem, when
the patch assumes the position and shape represented in Figure 9 with the stem
collapsed by the pressure of the sides of the puncture upon it. Now inflate the
tyre when the head becomes collapsed, and the patch assumes the figure represented
in Figure 2 and cut off the protruding end of the stem, flush with the outer surface.
of the tyre.
Figure 10 represents a section of a modified form of tyre patch constructed
according to my invention, and Figure 11 represents a section and Figure 12 a plan
of the same in position.
In this arrangement, the middle of the inside crown of the hollow head a, carries
a self-contained closure plug a', of the same diameter as, and adapted to entirely
fill up, the bore of the neck a², on the walls of the patch being collapsed by the
inflation of the tyre.
In repairing a punctured tyre with this form of patch, the material of the same
surrounding the puncture is removed by a circular wad-cutter or punch, and a
round hole is made, through which the patch, after being cemented and placed
upon the peg or rod, is forced. On the withdrawal of the peg, the walls of the stem
or neck fall to the sides of the hole and the head lies within the interior of the
tyre, with the plug a presented coincident to the bore of the stern. On inflating
the tyre, the walls of the head are collapsible upon one another and the plug a' is
forced into and remains within the bore of the neck a². The protruding end of the
neck is cut off flush with the outside surface of the tyre and the repair may, if
desirable, be completed by solutioning a piece of prepared canvas over all.
My invention is applicable to the repair of double tube tyres and also to other
inflating articles, as well as to single tube tyres.
I wish to be understood that the patches herein described may be made from silk
or any suitable elastic composition or material, as well as from rubber.
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 :-
First. A pneumatic tyre and article repairing patch, consisting of a hollow and
laterally collapsible head and a stem or neck, made of india rubber or other suitable
elastic material, substantially as described and set forth.
Secondly. A pneumatic tyre and article repairing patch, consisting of a hollow
and laterally collapsible head and stem or neck, made of india rubber or other
suitable elastic material, and with the inside crown of the said head having

page_text: a self-contained stem-closure plug, substantially as described and set forth in
Figures 10, 11 and 12.
Dated this 24th day of January 1895.
AARON SMITH CARTWRIGHT,
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.
AARON SMITH CARTWRIGHT,
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.