Improvements in and connected with Pneumatic Tyres for Bicycles,. Tricycles, and Road Carriages.
Year: 1893

page_text: Date of Application, 25th Jan., 1893
Complete Specification Left, 22nd Sept., 1893-Accepted, 2nd Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in and connected with Pneumatic Tyres for Bicycles,.
Tricycles, and Road Carriages.
FRANK CECIL ARMSTRONG of 22 St. Johns Buildings Kensal Green in the
County of Middlesex, Mechanic do hereby declare the nature of this invention to
be as follows:-
This invention relates to pneumatic tyres such as are employed on bicycles
tricycles & the like and inflated with air under pressure. The object of this
invention is to improve the construction of the tire in order to facilitate the means
of attaching it to the felloe or rim and to permit of the inner tube being readily
removed. I employ an inner tube as now in use. The outer rubber cover is
similar to those in use except that at each edge I lap the same forming a tube or
pipe at each edge which I strengthen with canvas worked in the rubber. Through
this small opening tube or pipe I pass a wire having a head or button at one end
which is larger on the surface than on the underside and at the other end of the
wire I have an eye through which I pass the head or button. The rim or felloe to
which the tyre is attached is either hollow or solid with edges standing up the
centre of the rim dipping slightly to allow of the fixing of the wire as before
mentioned. When the tyre is inflated the edges of the outer cover are pressed
outward to the edges of the rim thus holding the tyre secure.
January 25th.
FRANK CECIL ARMSTRONG.
Improvements in and connected with Pneumatic Tyres for Bicycles,
Tricycles, and Road Carriages.
I, FRANK CECIL ARMSTRONG of 22 St. Johns Buildings Kensal Green in the
County of Middlesex Mechanic 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 pneumatic tyres such as are employed on wheels for
bicycles, tricycles and the like and for road carriages and which are inflated with
air under pressure. The object of the invention is to improve the construction of
the tyre in order to facilitate the means of attaching it to the rim or felloe of the
wheel and while permitting of the ready removal of the air tube, which may be as
those now in use. The outer rubber cover has laps at each edge forming a thin
fold or as it were a tube on each side which I strengthen with canvas worked in the
rubber or forming a backing therefor. Through each fold I pass a wire haring at
one end a head or button and at the other end an eye through which I
pass tho
head or button so as to firmly secure the rubber cover by its overlapped edges and
thereby attach the tyre to the rim of the wheel which latter is formed with a slight
D

page_text: dip or annular recess or groove along each edge for the said fastenings to find their
places in. Or the ends of each wire may be secured to holes or notches or both in
the rim of the wheel.
In Figure 1 of the accompanying drawings A is part of one side of a rubber
cover with usual thickened tread and with the edge overlapped at A' forming a fold
or as it were a pipe. When the cover has been placed on the tyre the wire B is
passed through the slightly opened fold or lap and carried twice (or it might be
once) round the wheel and out through openings Ax in the lapped edges and then
the eyes are hooked into each other, being for this purpose formed with a button or
head B and an eye B' respectively. If the wire is only passed once. round the rim
there is a tendency for the cover to bulge out at the place of junction of the
wire ends.
Figure 2 shews.another mode of fastening the cover A on to the rim of a wheel
and Figure 3 shews the cover alone. In this case the wire B has a button B' at each
end which buttons find their places in notches C' formed in the edge of the wheel
rim C. The rim has also annular grooves as shewn at C, Figure 2, for the
fastenings to take their places in when the air tube D is inflated.
In Figure 4 is shewn another form of fastening where one end 6 of the wire is
fixed in the socket e while the other end b¹ passes freely in through the other end
of the said socket and then through a slanting portion el of the same, such other
end being provided with a button or head B' which finds its place in a notch in the
edge of the rim as in Figure 2 while the stud e on the socket piece e finds its place
in a round hole in one of the grooves such as C2 (Figure 2) of the rim.
Figure 5 illustrates my invention as applied to a hollow rim where the central
part is formed with holes c for the button at one end of a fastening wire and
notches 'C' for the button at the other end of same. The holes c have a large
round part for the button or head on the end of the wire to enter and a narrow
channel part for the neck under the button or head to enter so that when the tyre
is inflated the button is prevented from jumping back through the round part of the
hole. The holes and notches in the rim, whether a solid or hollow rim be employed;
may however be variously arranged according to circumstances.
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 I am
aware that it has been previously proposed to secure the outer covers of pneumatic
tyres by means of wires making two or more convolutions round the rim and I make
no claim to such methods per se, but what I claim is :-
1. In combination with a pneumatic tyre consisting of an inflatable air tube a
wheel rim with an annular groove along each side of same and a cover with over-
-lapped edges forming a fold on each side: the application and use of a wire
passed into each lateral fold of the cover going once or twice round the wheel in
each of the said annular grooves the wire having its ends formed with button and
eye for fastening together and holding the tyre to the wheel substantially as
described and shown.
2. In combination with a pneumatic tyre as named in the first clain : : the
application and use of a wire passed into each lateral fold of the cover going once
or twice round the wheel in each of the aunular grooves of the wheel rim, the wire
having each end formed with a head or button and the rim having slots or notches
or both for fastening the buttons thereto and holding the tyre to the wheel
substantially as described and shewn.
Dated this 22nd day of Santambor 1902
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.