Improvements in and relating to Pneumatic Tyres.
Year: 1892

page_text: Date of Application, 9th Nov., 1892
Complete Specification Left, 9th Aug., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
I HENRY WALTER VERDON, of 47 Brixton Hill, in the County of Surrey,
Gentleman, do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved method of attaching the cover or jacket of
a pneumatic tyre to the rim of a wheel, the object being to provide for the ready
removal and replacement of the said cover when it is necessary to get at the
air tube.
To
In carrying my invention into practical effect I form the cover or jacket of
rubber and canvas in the usual manner, and with beads or enlargements on each
edge. These beads or enlargements are preferably circular or approximately
circular in cross section and are preferably made of a hard quality of rubber or of
vulcanite. In the extreme edges of the rim are formed channels with comparatively
narrow openings the shape of these channels in cross section being similar to the
shape in cross section of the beads or enlargements on the edges of the cover.
provide for the introduction of these beads or enlargements into the channels in the
edges of the rim a portion of the channel on each side of the rim is cut away but is
provided with a sliding piece for closing the said gap when the cover is fixed to
the rim. Each of the beaded edges of the cover is split through in one place so
that the said beaded edges can be slid into the channels in the edges of the rim to
engage the cover therewith. When the edges of the cover have been slid through
their entire length into the channels in the edges of the rim the continuity of the
said channels is completed by the sliding pieces hereinbefore referred to.
I do not limit myself to the circular or approximately circular form of the beads
or enlargements on the edges of the cover and of the channels in the edges of the
rim, as they may both be of any other suitable and convenient section.
D
ד
CAT
1000
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
1, HENRY WALTER VERDON, of 47 Brixton Hill, in the County of Surrey,
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 and securing the cover
or jacket of a pneumatic tyre to a wheel rim, the object being to provide for the
ready removal and replacement of the said cover when it is necessary to get at
the air tube.
In carrying my invention into practical effect, I form the cover or jacket of
rubber and canvas in the usual manner, and with beads or enlargements on each
edge. These beads or enlargements are preferably circular or approximately
circular in cross section and are preferably made of a hard quality of rubber
or of vulcanite. In the extreme edges of the rim are formed channels with com-
paratively narrow openings, the shape of these channels in cross section being
similar to the shape in cross section of the beads or enlargements on the edges of
To provide for the introduction of these beads or enlargements into
the cover.
r

page_text: the channels in the edges of the rim, a portion of the channel on each side of the
rim is cut away and is provided with a sliding piece or its equivalent for closing
the said gap. Each of the beaded edges of the cover is split through in one place
so that the said beaded edges can be slid into the channels in the edges of the rim
to engage the cover therewith. When the edges of the cover have been slid
through their entire length into the channels in the edges of the rim the continuity
of the said channels is completed by the sliding pieces or their equivalents herein-
before referred to.
I do not limit myself to the circular or approximately circular form of the beads
or enlargements on the edges of the cover and of the channels in the edges of the
rim, as they may both be of any other suitable and convenient section.
In the accompanying drawing which illustrates my invention,
Figure 1 is a view in transverse section of a tyre and wheel embodying my
invention.
Figure 2 is a broken view, in side elevation thereof showing the sliding piece
closing the gap or opening in the wheel rim.
Figure 3 is a view in transverse section through the sliding pieces showing on
one side thereof the gap in the rim open and on the other side thereof the gap in
the rim closed.
Figure 4 is a broken view in side elevation showing the sliding piece withdrawn
to open the gap in the rim.
Figure is a view in transverse section of the cover of the tyre showing how the
beaded edges are pushed on one side at the slits when inserting the said beads or
enlargements in the channels of the rim, and
Figure 6 is a broken view in side elevation of the cover of the tyre showing one
of the slits in the beads or enlargements on the edges thereof.
Figure 7 is a view of the rim in transverse section showing an alternative method
of closing the gap in the channels of the rim for the introduction of the beaded
edges of the cover, and
.
Figure 8 is a view in transverse section showing another method of closing the
gap in the channels in the wheel rim.
Throughout the views similar parts are marked with like letters of reference.
The cover A of the tyre is made of rubber reinforced with canvas in the well-
known manner. It is moulded or otherwise formed of an approximately arch-
shape in cross section and it has beads or enlargements "a" formed on its edges.
These beads or enlargements are of any suitable shape in cross section but
preferably round as shown in the drawing, and they are made of a harder rubber
than the other part of the cover, or are stiffened and strengthened by an insertion
piece of canvas or other suitable material. Each of the beads or enlargements "a"
are split transversely through at one or more points "u" as shown by Figure 6.
The air tube B is of the usual construction and is fitted with any suitable form of
valve for inflation and deflation. The rim C may be either of the solid type as
shown by Figures 1 and 3, or of the hollow type as shown by Figure 7, and it has
formed in its edges channels """c," of a shape in cross section similar to that
of the beads or enlargements" on the edges of the cover A, but slightly larger
so that the said beads or enlargements can be easily and readily slid into the
channels in the rim and when so engaged therewith they cannot be pulled out
thereof by the pressure within the tyre. To permit the beaded or enlarged edges
of the cover being slid into the channels in the wheel rim one or more gaps or
openings ""are cut or formed therein as shown by Figures 2, 3, 4, 7, and 8.
The gaps or openings in each channel of the rim and the slits in each of the beads
or enlargements on the edges of the cover are preferably placed opposite to each
other so that both edges of the cover can be slid into position in the channels in the
rim at the same time. To close the gaps or openings "c1" in the wheel rim, sliding
pieces "" are placed over the exterior of the channels "e" which either close
the gaps or openings as shown by Figure 2, or open them as shown by Figure 4.
the said sliding piece being fixed in position when the gap or opening is closed b
a
دو
66

page_text: means of a screw "" threaded into the wheel rim and engaging with a slot in
the sliding piece. As an alternative the sliding piece may be made of the same
length as the gap or opening in the wheel rim and be made of spring steel to spring
into the said gap or opening when it is opposite to it and so preserve the width
of the orifice or mouth of the channel, in which case it is kept in position by means
of a sliding bolt "e" as shown by Figure 8. Another method of opening and
closing the gap is to hinge a loose piece "" to the gap or opening in the channel
as shown by Figure 7, the said hinged piece being locked in position to close the
gap or opening by means of a sliding bolt "."
To attach the cover to the wheel rim it is placed over the rim and the beads or
enlargements slid into the channels thereof through the gaps or openings by pushing
aside the beads or enlargements on one side of each split therein as shown by
Figure 5, and pulling the cover circumferentially round the wheel rim until its
entire edges are in the channels in the edges thereof, the gaps or openings in
the wheel rim being afterwards closed in the manner hereinbefore described.
I wish it to be particularly understood that I do not limit myself to the precise.
details of construction herein before described and illustrated by the accompanying
drawings, but that I hold myself at liberty to make such changes and alterations as
fairly fall within the spirit and scope of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manper the same is to be performed, I declare that what I
claim is:-
1. The respective combination and arrangement of parts forming my improved
pneumatic tyre, as hereinbefore described and illustrated by the accompanying
drawings.
2. Securing the covers of pneumatic tyres to wheel rims by sliding them circum-
ferentially round the wheel rims, as set forth.
3. The improved method of attaching and securing the covers of pneumatic tyres
to wheel rims, consisting in forming beads or enlargements on the edges of the
cover, of splitting the said beads or enlargements transversely at one or more
places, and of forming at the edges of the wheel rim narrow mouthed channels
having one or more gaps or openings therein through which the beaded or enlarged
edges of the cover can be slid, as set forth.
4. In a pneumatic tyre, the combination of the cover A having beads or enlarge-
ments " a
""a" on each edge, the said beads or enlargements being split trans-
versely at one or more places, of the air tube B provided with any suitable valve
for inflation and deflation; and of the wheel rim C having channels "c" "c" at
its edges, each having one or more gaps or openings "e" cut or formed in it and
capable of being closed by the sliding pieces "," as and for the purpose
set forth.
"
5. In a pneumatic tyre, the combination of the cover A having beads or enlarge-
ments " a ""a" on each edge, the said beads or enlargements being split trans-
versely at one or more places; of the air tube B provided with any suitable valve
for inflation and deflation; and of the wheel rim C having channels "c" "6, C at
its edges, each having one or more gaps or openings "c" cut or formed in it and
capable of being closed by the hinged pieces "," as and for the purpose
set forth.
Dated this 9th day of August 1893.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.