Improvements in and relating to Pneumatic Tyres.
Year: 1892

page_text: Date of Application, 7th Mar., 1892
Complete Specification Left, 7th Dec., 1892-Accepted, 14th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
IEPHEGE JOSEPH PIPPET of Solihull, Birmingham, in the County of
Warwick, Gentleman do hereby declare the nature of my said invention to be as
follows:-
:-
My invention relates to an improved method of attaching the outer cover or
envelope to the rim, the object being to facilitate its removal therefrom in. case it
is necessary to get at the air tube for the purpose of repair or otherwise.
According to my invention I use any ordinary section of crescent shaped rim,
and over this I place an endless band or hoop of thin metal-preferably tinned
steel-having enlarged or beaded edges-preferably formed by turning each of the
edges of the band over a length of wire. The size of this band or hoop is such that
between its inner face and the periphery of the rim-on its edges-there is just.
The
sufficient space for the thickness of the outer cover or envelope at its sides.
outer cover or envelope is formed in an approximately arch-shaped section, and it
The air tube is of the usual
has its edges enlarged by beads or their equivalent.
construction and the canvas bag may be either a loose one, or it may be incorporated
with either the outer cover or the air-tube.
To place the outer cover in position after the air-tube is laid on the endless band
or hoop, the said hoop or band is first pushed to one side of the rim, to allow the
beaded edge of the cover to be passed between the edge of the band or hoop and
the edge of the rim, the hoop or band is pushed over to the other side of the rim
allowing the other beaded edge to be passed between the other edge of the band or
hoop and the other edge of the rim. The hoop or band is then pushed back into a
central position and the tyre inflated when it will be found to be firmly fixed to
the rim.
1
CM 1000
ROBT. ED. PHILLIPS, M.I.M.E.,
70, Chancery Lane, London, W.C., Agent for the Applicant..
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
IEPHEGE JOSEPH PIPPET of Solihull, Birmingham, in the County of
Warwick, Gentleman, 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 :-
My invention relates to an improved method of attaching the outer cover or
envelope of a pneumatic tyre to the wheel rim, the object being to facilitate its
removal therefrom in case it is necessary to get at the air tube for the purpose of
repair or otherwise.
According to my invention I use an ordinary section of crescent-shaped rim and
over this I place an endless band or hoop of thin metal-preferably tinned steel-
having enlarged or beaded edges-preferably formed by turning each of the
edges of the band over a length of wire. The size of this band or hoop is such
that between its inner face and the periphery of the rim-on its edges-there is
just sufficient space for the thickness of the outer cover..or envelope at its sides.
The outer cover or envelope. is formed in an approximately arch-shaped section
1

page_text: and it has its edges enlarged by beads or their equivalents. The air tube is of the
usual construction and the canvas bag may be either a loose one or it may be
incorporated with either the outer cover or the air tube.
To place the outer cover in position after the air tube is laid on the endless
band or hoop, the said hoop or band is first pushed to one side of the rim, to allow
the one beaded edge of the cover to be passed between the edge of the band or
hoop and the edge of the rim; the hoop or band is then pushed over to the other
side of the rim allowing the other beaded edge to be passed between the other
edge of the band or hoop and the other edge of the rim. The hoop or band is then
pushed back into a central position and the tyre inflated when it will be found to be
firmly attached to the rim.
In the accompanying drawing which illustrates my invention,
Figure 1 is a view in transverse section illustrating my invention and
Figure 2 is a similar view showing a modification thereof.
Figures 3 and 4 are views in transverse section showing how the cover is placed
in position on the rim.
Throughout these views similar parts are marked with like letters of reference.
The rim A is of the ordinary crescent or any other suitable section. The
cover B is made of rubber reinforced with canvas in the well-known manner and
is preferably moulded in an approximately arched shape in cross section. The
edges of the cover B are enlarged in any suitable manner to form beads b, b. Over
the rim is placed an endless band or hoop C made of any suitable metal or material
preferably tinned steel. This band or hoop may be either flat in cross section as
shown by Figure 1 or curved as shown by Figure 2 and it preferably has its edges
beaded as shown. When the band or hoop C is made curved as shown by Figure 2
it is preferably made flexible at the centre of its width by perforating it with a
series of holes, so that the pressure of the air tube on it causes it to flatten out and
so more tightly grip the cover on to the rim. The air tube D is of the usual con-
struction made of pure rubber and it is fitted with any suitable form of valve for
inflation and deflation.
To attach the tyre to the rim, the air tube D is first placed over the band or
hoop C. The band or hoop is then pushed over one edge of the rim A until onc
edge of the cover B can be placed between the edge of the band or hoop and the
rin as shown by Figure 3. The band or hoop is then pushed back over the other
edge of the rim and the other edge of the cover is placed in position as shown by
Figure 4. The band or hoop is then pushed back into a central position as shown
by Figure 1 and the air tube is inflated. To remove the cover to get at the air
tube this process is reversed.
An alternative method of removing or attaching the cover is to prise the endless
band or hoop up with a screw driver or lever on one side until the opposite side of
the cover can be withdrawn or inserted as the case may be.
I am aware that bands or hoops adapted to be contracted in their lengths, or to
be drawn down to the rims of wheels by mechanical means, have already been used
for fixing the covers of pneumatic tyres to the rims of wheels, and 1 do not
therefore broadly claim such as my invention, but
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 :-
1. The improvements in pneumatic tyres, as hereinbefore described and illus-
trated by the accompanying drawing.
2. In a pneumatic tyre, the combination with a rim of the ordinary crescent
shape in cross section, of an endless band or hoop slightly larger in diameter than
the diameter of the rim at the edges thereof, of a cover having beads or enlarge-
ments on its edges, and of an air tube for inflating the tyre, all combined, arranged
and operating, as and for the purpose set forth.
3. In a pneumatic tyre, the combination with a cover having beads or enlarge-

page_text: ments on its edges, of a rim of the ordinary crescent section, and of a flat endless
band or hoop of a larger diameter than the rim, as and for the purpose set
forth.
4. In a pneumatic tyre, the combination with a cover having beads or enlarge-
ments on its edges, of a rim of the ordinary crescent section, and of an endless band
or hoop curved in cross section and of a larger diameter than the rim, as and for
the purpose set forth.
5. In a pneumatic tyre, the combination of the rim A, of the cover B having
beads or enlargements b, b, on its edges, of the endless band or hoop C, and of the
air tube D, all combined arranged and operating, as and for the purpose set
forth.
Dated thin 7th 1.
Jan 1800
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.