An Improved Tyre, and Rim therefor, for Velocipedes and other Vehicles.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
An Improved Tyre, and Rim therefor, for Velocipedes and other
Vehicles.
We, CHARLES ARTHUR CHAPMAN, of Glenthorne, Horley, Gentleman, and
MAURICE JENKS, of 6, Old Jewry, London, Chartered Accountant, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an improved tyre and rim for velocipedes and other
vehicles and it has for its object to produce a tyre which shall be resilient and
which may be readily and easily removed from the rim when necessary.
The tyre consists of an inner core of any convenient cross section consisting of
two superposed concentric rings consisting of spiral springs covered with cotton
or other material to prevent the said wires damaging the surrounding material
and which also prevents any creeping. These wires form the centre of the core
and have cast or otherwise formed around them an outer covering of rubber cork
or any other suitable substance. The springs aforesaid which may be of steel or
other metal are continuous and run round the tyre concentric with the diameter
thereof. The core thus formed may either rest directly upon the rim of the wheel
or it may be supported upon a rubber cord stretched across the interior of the rim
at intervals.
To keep the tyre upon the rim an outer cover of rubber or other suitable material
is provided having two wires secured thereto upon the edges in any suitable
manner, to receive which wires a suitable semicircular recess or channel is formed
upon the edges of the rim on both sides. The wires are not continuous but have
formed at each end a screw thread, one of which may be a right hand and the
other a left hand thread which threads engage with corresponding threads formed
within a suitable coupling, or nut, also placed outside the rim, and by which the
said wires are tightened when the cover is in position.
Instead of the coiled springs aforesaid, which form the centre of the core, we
may substitute therefor a number of tubes constructed of flax or pure thread
woven or shaped in any desired form, the number of tubes and the disposition of
the same being dependent upon the size and contour of the core.
the tubes when arranged in the desired manner are then covered with flax or the
The whole of
like in the same manner as each individual tube composing the aforesaid core,
and the whole treated with rubber or other suitable solution. Cork dust may
also be incorporated with the solution before applying the same to the core.
In addition to the outer cover we may use an inner cover which may be of rubber
or any other suitable material.
Dated this 15th day of December 1907

page_text: •
An Improved Tyre, and Rim therefor, for Velocipedes and other
Vehicles.
We, CHARLES ARTHUR CHAPMAN, of Glenthorne, Horley, Gentleman, and
MAURICE JENKS, of 6, Old Jewry, London, Chartered Accountant, 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 an improved tyre and rim for velocipedes and other
vehicles, and it has for its object to produce a tyre which shall be resilient and
which may be readily and easily removed from the rim when required.
In order that the invention may be the better understood, drawings are appended
in which:
Fig. 1, is a transverse section of one form of the improved rim and tyre.
Fig. 2, is a longitudinal section of a part of same,
Fig. 3, is a plan of the rim and the supporting rubber cord for the tyre.
Figs. 4 and 5 are detail views of the means employed for securing the rubber
cord within the rim.
Fig. 6, is a detail showing the retaining wire for the outer cover.
Figs. 7 and 8 are views showing on an enlarged scale the construction of the
tyre and the means for securing the cord retaining device thereto.
Figs. 9 and 10, are respectively a transverse section and side view of a form of
tyre which may be employed.
Figs. 11 and 12, are respectively a transverse section of an alternative form
of tyre,
Fig. 13, is an enlarged section of an alternative form of supporting cord, and
Fig. 14, is a section of a rim composed of two parts.
In carrying the invention into effect, channels or recesses 1 and 2, are formed
upon the edges of the rim 3, adapted to receive the edges of the outer cover 4, within
which edges are loose rings 5, of steel or other suitable metal, the ends of which are
provided with right and left hand screw threads, see Fig. 6, and having a nut 6,
threaded internally with corresponding threads to those upon the wire and by
which nut the wire is tightened when the rings are in position, the cover 4, being
cut away and a slot formed in the outer wall of the channel so as to permit of this
adjustment. The cover 4, may be of any well known form such as rubber, having
a backing of canvas or the like, and envelops the core of the tyre which may be
of any of the forms illustrated by Figs. 1, 2, 9, 10, 11 and 12.
The core shown in Fig. 1, consists of three pieces of cork 7, 8, 9, secured together
by any suitable cement and being provided with an outer cover of woven cotton or
other suitable material, see Fig. 2. The core is supported upon a cord of rubber 10,
covered with woven cotton or the like stretched across the rim 3, and secured
therein by the hooks, 11, and for which hooks slots or openings 12, are formed in
the inner walls of the two channels 1, 2, the hooks being formed either of one
piece of metal bent as shown in Fig. 4, with a hook at the front end and at the
other an eye, through which may be passed, a wire 13, see Fig. 3, the wire serving
to keep the hooks in their position, whilst the rubber cord 10, is passed through the
hooks, and it also prevents any riding on the part of the said hooks when the tyre is
in use. Instead of the hooks being formed as just described, they may be formed
as shown in Fig. 5, in which case the hook is made of a piece of suitable metal

page_text: wire turned at the centre of its length and the two portions lying side by side
turned at their ends 14, at right angles to the body of the hook, the hook proper
being formed by turning up the opposite end of the wire at right angles to the
plane of the body, the outwardly extending portions 14, engaging with the walls
of the channels 1 and 2, to prevent the hook being drawn through the slot 12,
former therein. The slots 12, also permit of a certain amount of play upon the part
of the hooks so that as the tyre moves vertically under the weight of the rider
the hooks will swing in the vertical plane to clear the core and prevent any chafing
or wear to the core by the said hooks. The supporting cord 10, may either consist
of a plain piece of rubber or as shown in Fig. 13, it may be composed of a number
of twisted strands of rubber, and covered with a woven cover of cotton or the like.
Referring to Figs. 9 and 10, the core there shown consists of two superposed
spirals of steel or other suitable wire 15, covered with a woven cover of cotton 16,
and formed into a ring. The springs may be imbedded if desired in a core of
cork or the like, and the outer woven cover may be covered with a suitable rubber
solution.
In Figs. 11 and 12, is shown a tyre composed of a block of cork 17, upon which
rests a piece 18, of greater breadth having placed above it a piece of felt 19, upon
which rests a piece of rubber 20, a piece of felt 21, upon the rubber, and having
two pieces of thin rubber forming a tread, the whole being cemented together and
having when enveloped by the outer woven cover 22, an approximately oval shaped
section. The woven cover 22, may also be solutioned.
The cores would in each case be supported upon the cords 10, and would have an
outer cover, the same as illustrated and described in connection with Fig. 1.
-
Referring to Fig. 14, in which is shown an alternative form of rim composed of
two rings or shells 23, 24, approximately semicircular in section, and placed one
within the other, having their edges turned out so that when one is placed within
the other, the two parts 25, and 26, will form a gutter or channel to receive the
edge of the tyre as shown in Fig. 14. The two rings or shells one of which is of
necessity of slightly smaller diameter than the other, and which latter is sprung
into the larger, are secured together by rivets or equivalent means.
The supporting rubber cord 10, may in some cases be enveloped with a spiral
of steel or other suitable wire, and then covered with a cover of woven material.
In the case of a number of bands or rings of rubber cord being employed the
bands would be provided with a metal eyelet which would engage with the hooks
and prevent any injury thereby, the body of the ring being covered with a woven
cover of cotton or the like.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In a tyre and rim for velocipedes and other vehicles the combination of a
rim having a rubber cord stretched across it and provided with side channels or
recesses to receive the edges of the outer cover with a tyre composed of cork and
provided with an outer covering of woven cotton or the like, substantially as
herein described and shown by the accompanying drawings.
2. In a tyre and rim for velocipedes and other vehicles the combination of a
rim having side channels for the reception of the edges of the outer retaining
cover with means for retaining a rubber cord for supporting the core of the tyre,
substantially as herein described and shown by the accompanying drawings.
3. In a rim and tyre for velocipedes and other vehicles a tyre composed of two
superposed concentrically arranged rings or spiral springs covered with an outer
cover of woven cotton or the like and an outer cover for retaining the same in
position upon a cord of rubber or the like, substantially as described and shown
by the accompanying drawings.
4. In a rim and tyre for velocipedes or other vehicles the combination with a

page_text: suitable supporting rubber cord of a tyre composed, substantially as described
and as illustrated by Figs. 11 and 12.
5. The improved cord composed of a number of strands of rubber covered with
woven cotton or the like, substantially as and for the purpose herein described
and shown by the accompanying drawings.
Dated this 12th day of October 1898
J. E. EVANS-JACKSON & Co.,
Agents for the Applicants.