Improvements in and relating to Pneumatic Tyred Wheels.
Year: 1892

page_text: Date of Application, 22nd Dec., 1892
Complete Specification Left, 24th Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyred Wheels.
I WALTER TURNER, of 133 Sturland Road, Maida Vale, in the County of
London, Engineer, do hereby declare the nature of this invention to be
follows:-
ns
My invention relates to an improved construction of wheel rim and cover for a
pneumatic tyre, the object being to facilitate the removal of the cover from the
wheel rim for the purpose of getting at the air tube.
According to my invention I make the rim of the wheel-which may be either
hollow or solid-with a flat bottom groove in its outer face tapered from one side of
the rim to the other so that the base of the groove is cone-shaped, i.e., its
circumference on one side is greater than its circumference at the opposite side.
The flanges or sides of the rim are of any convenient depth and they are both of
the same external diameter.
The cover of the tyre which is arch-shape in cross section, is made of rubber
reinforced with canvas in the well-known manner and it has its one edge deeper
than the other to correspond with the increased depth of the groove in the rim on
one side thereof. In each edge of the cover pockets or their equivalents are formed
in which are located, or with which engage, binding wires, or cords. The wire or
cord in the edge of the cover adapted to fit in the side of the groove in the rim
which is of a smaller circumference than the other side is provided with any suitable
device for binding the said edge of the cover to the rim, but the wire or cord on the
other edge of the cover is made endless in the form of a hoop so that this edge of
the cover unstretchable.
It will be seen that by this construction the edge of the cover having the
unstretchable wire hoop can only be detached from the rim by pushing it to the
other side of the rim where the diameter of the groove is the smaller and thereby
allowing access to be had to the fastening of the other wired edge of the cover
which when unfastened or released allows it to be passed over .its own edge of the
rim thus allowing the other edge of the cover-having the unstretchable edge-to
be passed over the same edge of the rim, but under no circumstances can the said
edge of the cover having the unstretchable wire hoop be passed either on or off the
rim over the edge thereof against which it is adapted to fit when in place on
the rim.
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 Tyred Wheels.
I, WALTER TURNER, of 133 Sturland Road, Maida Vale, in the County of
London, Engineer, 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 construction of wheel rim and cover for a
pneumatic tyre, the object being to facilitate the removal of the cover from the
wheel rim for the purpose of getting at the air tube.

page_text: According to my invention I make the rim of the wheel-which may be either
hollow or solid-with a flat bottom groove in its outer face tapered from one side
of the rim to the other so that the base of the groove is cone-shaped, i.e., the
'circumference of the groove on one side is greater than the circumference at the
opposite side measurements being taken at the bases of the flanges. The flanges or
sides of the rim are made of suitable depth and they are both of the same external
diameter when measured across from top of one flange on one side to top on the
opposite side.
The cover of the tyre which is arch-shape in cross section, is made of rubber
reinforced with canvas in the well-known manner, and it has its one edge deeper
than the other to correspond with the increased depth of the groove in the rim on one
side thereof. In each edge of the cover, pockets or their equivalents are formed in
which are located, or with which engage, binding wires or bands. The wire or
band in the edge of the cover adapted to fit in the side of the groove in the rim
which is of a smaller circumference than the other side is provided with any
suitable device for contracting its length to bind the said edge of the cover to the
rim, but the band or wire on the other edge of the cover is made endless in one
piece in the form of a hoop so that this edge of the cover is unstretchable.
In order that my invention may be fully understood I will more particularly
describe it making reference to the accompanying drawing, in which :-
Figure 1 is a view in transverse section of a rim and tyre constructed according
to my invention.
Figure 2 is a view in transverse section of a rim and tyre showing how the cover
is removed from the rim.
Figures 3, 4, 5 and 6 are views in transverse section showing other methods of
constructing the wheel rim, and
Figures 7 and 8 are views in transverse section showing a modification in the
method of attaching the cover to the wheel rim.
"
a
"
Throughout the views similar parts are marked with like letters of reference.
The rim A of the wheel-which is either hollow as shown by Figures 1, 2, 6, 7
and 8, or solid as shown by Figures 3, 4 and 5, is made with a flat or approximately
flat bottom groove, the one side "a" of the groove being deeper i.e., of a smaller
diameter than at the other side "a" the perimeters of the circular flanges "a²," "a³,"
are alike, that is having equal radii. The groove of the rim is conveniently made
deeper at the side ", α than at the side "a" either by tapering the face of the
groove from the side "a" to the side "
as shown by Figures 1, 2, 7 and 8, or it
may be formed by making a channel " a at one side of the rim, the circumference
of which taken at its lowest part is smaller than the circumference at "a" as
shown by Figures 3 and 5, or as a modification the channel " may be used with
a slightly tapered bottom to the groove as shown by Figure 4, or with a partly
tapered and partly flat bottomed groove as shown by Figure 6. When a solid rim
is made with a channel "a" in it, I prefer to make the external part of the rim
symmetrical by forming a bead "a" on the side of the rim "a" equivalent to the
exterior form of the riin on the channelled side "a" as in Figure 5.
"
a
وو
The cover B of the tyre is made of rubber reinforced with canvas in the
well-known manner, and it is moulded or otherwise made with one of its edges "b"
deeper than its other edge "1" as shown by Figure 1. In the edges "" and ""
of the cover are formed pockets adapted to receive or contain bands or wires C
and C, the hand or wire in the edge "6" of the cover B is made expansible and
contractible in length by means of any suitable device such as a right and left hand
coupling nut, but preferably by the device set forth in the Specification of my
Letters Patent No. 21716 of 1892.
If an internal fastening is used with the band or wire C, it is got at to manipulate
it by pressing over the edge "6" of the cover as shown by Figure 2, which also
shows how this edge "1" can be passed over the flange of the rim on the side
thereof.
a
"

page_text: As a modification the band or wire C may simply engage with a bead "6"
formed on the edge "b" of the cover as shown by Figures 7 and 8, in which case
the fastening of the said band or wire is got at from the interior of the tyre by
pressing over the edge "&" of the cover as shown by Figure 8.
The air tube D is of the usual construction made of rubber, and is provided with
any suitable form of valve for inflation and deflation.
The circumference of the band or wire C₁ is such that it cannot be passed over
the flange on the side "a" of the rim, and therefore the edge "" of the cover
cannot be got off that side of the rim. The circumference of the groove in the
rim at the side " a" however is so much less than that at the side "a" that the wired
edge "6" of the cover can when moved from "a" to "a" be got off rim on the
side "
" thereof after the edge "6" of the cover has been detached, which is
effected by expanding or lengthening the circumference of the band or wire C
therein.
It will be seen that under no circumstances can the edge "1" of the cover-
having the endless band or wire C₁-be passed over the same flange of the rim on
the side "a" against which it fits, and that under no circumstances can the
edge "1" of the cover be removed from or replaced on the rim except over the
flange on the side "a" of the rim.
It will also be seen that the shape of the bottom of the groove must be such that
the reduced circumference at "a" compared with the larger circumference at "a" "
will allow of the endless wire being passed over the rim on the side"
a.
"
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
drawing, but that I hold myself at liberty to make such changes and alterations as
fairly fall within the spirit and scope of my invention as herein claimed.
I am aware that it is not new generally to use two bands or wires for securing
the covers of pneumatic tyres to wheel rims, and I make no broad claim therefor,
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 combinations of parts respectively formed and used for pneumatic tyred
wheels, as herein before respectively described and illustrated by the accompanying
drawing.
2. For a pneumatic tyred wheel, the use of a rim the groove of which is deeper
at one side of the rim than at the other, as and for the purpose set forth.
3. A rim adapted to carry a pneumatic tyre, having a flat or approximately flat
bottomed groove, the one side of which is of a smaller circumference than the other,
and flanges of equal circumference, as and for the purpose set forth.
4. A rim adapted to carry a pneumatic tyre, having a flat or approximately flat
bottomed groove with a channel at one side thereof of a smaller circumference than
the flat or approximately flat bottom groove, as and for the purpose set forth.
5. In a pneumatic tyred wheel, the combination of a grooved rim having a flat
or approximately flat bottom deeper at one side than at the other; of a cover or
jacket having one edge of a larger circumference than the other, each edge having
a pocket in which is located a fixing band or wire, the band or wire in the edge of
the cover of the larger circumference being an endless hoop, and that in the edge
of the cover of the smaller diameter being expansible and contractible; and of an
air tube adapted to inflate the tyre, as set forth.
6. In a pneumatic tyred wheel, the combination of a grooved rim having a flat
or approximately flat bottom deeper at one side than at the other; of a cover or
jacket having one edge of a larger circumference than the other, and having a
pocket formed in it in which is located an endless fixing band or wire, and the
other edge of which has a bead or enlargement with which an expansible and

page_text: contractible fixing band or wire engages, and of an air tube adapted to inflate the
tyre; as set forth.
Dated this 24th 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.