Improved Means of Attaching Pneumatic Tyres to the Rims of Wheels for Bicycles, Tricycles, and other Vehicles.
Year: 1894

page_text: Date of Application, 22nd Jan., 1894
Complete Specification Left; 9th Mar., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
Improved Means of Attaching Pneumatic Tyres to the Rims of
Wheels for Bicycles, Tricycles, and other Vehicles.
I CHARLES ALBERT CARK of 40 Edward Street Bury in the County of
Lancaster, Shuttle Maker, do hereby declare the nature of this invention to be.
as follows:-
The object of this invention is to provide a simple and efficient means, of
attaching pneumatic tyres to the rims of the wheels for bicycles tricycles and other
vehicles, the said attachment being readily undone and readjusted when desired,
and also to enable a very flat light rim to be employed.
For this purpose I provide a light flat metal rim with a small tubular recess at
either edge almost all round the said rim the said recesses being formed by bending
round the edges into tubes upon the inner surface of the rim. The outer edge of
each tube or recess does not quite meet the angle formed by the bending back of
the metal rim, but leaves a slot or split all round the said recess or tube which is
cut away or partially cut away at one point in its circumference for about one half
an inch (more or less) for the purpose hereinafter described.
The inflatable tube of the tyre is made as usual, but the loose outer covering is
provided with an enlarged bead at each edge formed preferably by making a small
tube at each edge of the canvas thereof and filling the same with an india rubber or
other cord, or with other suitable material.
Each edge of the tyre covering is cut across through the bead and slightly
beyond, so that the ends thus formed in the beads can be separated and one end can
be inserted into each of the small tubes or recesses in the rim at the points where
the said recesses are cut away as above described, and by working the beads along
gradually they are entirely enclosed by the tubular edges of the rim and the
covering will pass through the slots or slits in the same and will thus enclose the
inflatable tube which is previously put around the rim.
The cut away part of the recesses or tubes are or may be protected by short
segments capable of sliding thereon when required.
It will be found very easy to remove and replace this covering when desired, and
as it is fixed firmly by the beads to the edges of the rim, the latter may be made
almost flat without interfering with the steadiness of the tyre...
Dated this 20th day of January 1894.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION..
Improved Means of Attaching Pneumatic Tyres to the Rims of
Wheels for Bicycles, Tricycles, and other Vehicles.
I CHARLES ALBERT CARR of 40 Edward Street Bury in the County of
Laucaster, Shuttle Maker, 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:—
The object of this invention is to provide a simple and efficient means of
attaching pneumatic tyres to the rims of wheels for bicycles, tricycles, and other

page_text: vehicles the said attachment being readily undone and readjusted when desired, and
also to enable a very shallow light rim to be employed.
My invention will be readily understood from the following description on:
reference to the accompanying drawings.
Figs. 1, 2 and 3 shew a rim for a bicycle wheel made according to my invention,
Figs. 1 and 3 being sections taken respectively through the lines A B and C D on
the plan view Fig. 2;
Fig. 4 shews in plan and section part of my improved tyre cover,
Figs. 5 and 6 illustrate detached parts hereafter referred to.
Figs. 1 and 2 illustrate in section and plan how a tyre cover begins to be
affixed to the rim ;
Figs. 1 and 2 shew part of a tyre complete and inflated.
I provide a light flat (i.e. shallow) metal rim a with a small tubular recess a¹ at
either edge almost all round the said rim, the said recesses a' being formed
preferably by bending round the edges into tubes (as seen at Figs. 1 and 2) upon
the inner surface of the rim.
The outer edge of each tube or recess a' does not quite meet the angle formed
by the bending back of the metal rim a but leaves a slot or split a² (see Figs. 1
and 2) all round the said recess or tube which is cut away at one point a³ (see
Figs. 2 and 3) or at more than one point (if preferred) in its circumference for
about one inch (or more or less) for the purpose hereinafter described.
The recesses a¹ may be circular in section as shown or of any other convenient
and suitable form of section.
The inflatable tube 6 of the tyre is made as usual, but the loose outer covering c
is provided with an enlarged bead c¹ at each edge formed preferably (as seen at
Fig. 4) by making a small tube at each edge of the canvas thereof and filling the
same with an india rubber or other core or cord or wire of suitable section or with
other suitable material.
Each edge of the tyre covering c is cut across through the bead c¹ and slightly
beyond (as seen at c2 Fig. 4) so that the ends thus formed in the beads c¹ can be
separated (see Fig. 1A) and one end inserted into each of the small tubes or
recesses a¹ in the rim a at the points a³ where the said recesses a' are cut away as
above described (see Fig. 2A); by working the beads c' along gradually they are
entirely enclosed by the tubular edges a¹ of the rim a and the covering c will pass
through the slots or slits a² and will thus enclose the inflatable tube b which is
previously put around the rim (see Fig. 1A).
The cut away part a³ of each of the recesses or tubes a' and the slits c2 in the
tyre cover c may be opposite to each other as shewn on the drawings or they may
be at different points on the rim and the tyre cover if it should be found that the
arrangement shewn weakens the rim.
The parts a³ may be covered by short segments to protect the edges of the cover
and keep out dirt and water. These segments may be made to slide upon or within
the said tubes or recesses a¹. The drawing (Figs. 1B and 2B) shews the segments d
sliding within the said tubes and in this case I further protect them by a covering
piece e exactly fitting in the space a³ and held in place by a pin d' fixed to the
segment d (see detached views Fig. 5) engaging in a slot e¹ in the piece e (see
detached views Fig. 6), the slot e being enlarged at one end to allow the head of
the pin d to pass through the covering piece e.
The covering piece e is taken off and the segment d withdrawn from the space a³
when the covering c is to be removed or partly disengaged from the rim. Other
means for covering the spaces a³ may be adopted if preferred.
It will be found very easy to remove this covering c or to partially disengage
the same from the rim a and to replace it when desired, and as it is fixed firmly by
the beads c' to the edges a' of the rim, the latter can be made almost flat (see
Fig. 1,) without interfering with the steadiness of the tyre.
If required one or both ends of each of the beads c¹ may be strengthened by
a short metal ferrule c³ to protect the same.

page_text: 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 a tyre cover has been provided with tubular edges which have been inserted
while collapsed into the edges of rims such as shewn at Fig. 1 the said tubular
edges being expanded by the subsequent insertion of a wire or by pumping air
therein or otherwise and I wish it to be understood that I make no claim to such
construction but what I claim is :
The combination with a rim provided with tubes or recesses at either edge, of
a covering (for the pneumatic tube or its equivalent) having a bead along either
edge, the said recesses in the rim having a space or spaces cut away to allow
of the insertion of the aforesaid beads on the edges of the covering, which is cut
through at a point or points at each edge for the purpose of such insertion,.
substantially as and for the purpose hereinbefore described.
Dated this 8th day of March 1894.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.