Improvements in the Construction of Wheels for Velocipedes and other Vehicles.
Year: 1891

page_text: Date of Application, 8th Sept., 1891
Complete Specification Left, 29th Oct., 1891-Accepted, 5th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Wheels for Velocipedes and
other Vehicles.
I JOHN ASBURY of Cheylesmore, Coventry in the County of Warwick,
Machinist, do hereby declare the nature of this invention to be as follows:-
This invention relates more particularly to that class of velocipede wheels which
are furnished with the form of tyre known as the pneumatic tyre, and has reference
to means for securing the same in position on the rim.
According to the present invention, the rim of the wheel is of metal, made up of
an inner and an outer portion. The spokes of the wheel pass through the outer
portion, and bear against the inner portion, which thus provides against injury to
the air tube by the ends of the spokes.
The air tube of the tyre rests against the inner portion, which is of suitable
section to form a fitting seat. The air tube is secured upon the rim by an envelope
of rubber or other suitable material. This envelope consists of a flat strip of
proper length and width, the edges of which, thickened or formed with a bead or
fillet, are clamped between the inner and outer portions of the metal rim. The
outer portion of the rim is grooved circumferentially of the wheel, to give a recess,
for the reception of the thickened portion, bead, or fillet, of the envelope.
The inner portion of the metal rim may be in one or more lengths secured and
drawn end wise together for clamping the rubber envelope by screws passing
through lugs. The outer portion of the rim may be slotted, to allow the lugs to
project through, and thus provide for the tightening up of the screws without
disturbing the rest of the wheel.
Dated this 8th der of Sentember 1801
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Wheels for Velocipedes and
other Vehicles.
I, JOHN ASBURY of Cheylesmore Coventry in the County of Warwick,
Machinist, 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 more particularly to that class of velocipede wheels which
are furnished with the form of tyre known as the pneumatic tyre, and has reference
to means for securing the same in position on the rim.
In the accompanying drawing I have illustrated part of a velocipede rim embody-
ing my invention.
Fig. 1 is a sectional side view
Fig. 2 is a cross section on the line x-x of Fig. 1 ;
Fig. 3 is a plan view of the rim as seen from the back.
A is the metal rim of the wheel, made up of an inner portion a and outer
portion a'. The inner portion a, so called because it is situated between the outer
portion and the tyre, is divided transversely in one or more places, and at the ends
of the pieces so divided are provided means for drawing together the ends, and
thereby shortening the circumference of the portion a of the rim.
In the drawing I have shewn lugs 6 6¹ connected by a screw B, with a nut ¿ª

page_text: thereon. The lugs 6 6' project through slots in the portion a' of the rim, so as to
render them accessible without disturbing any portion of the wheel.
C is the tyre, which may be a pneumatic tube, or a cushion, or perhaps a solid or
ordinary tyre. This tyre C is sprung into position, and beds against the portion a
of the rim, which is of suitable section to receive it. D is a covering consisting of
a strip of rubber or other suitable material laid around so as to completely envelope
the tyre C, the edges d d of the envelope D (preferably thickened at that part, as
shewn in the drawing) being inserted between the portions a and a¹ of the rim A.
a are recesses in the portion a¹ for engaging with the edges d d of the envelope,
thickened or otherwise provided with projections to fit the recesses.
•
e are the spokes, which project through the portion a' of the rim, and bear
against the inner portion a, being thereby effectually prevented from damaging the
tyre C.
When the tyre C is in position, and the envelope D laid around it, the edges d d
of the latter are gripped between the portions a, a' of the rim A, by reducing the
circumference of the portion a, and causing the same to approximate more closely
to the portion a', which remains rigid. This may be effected without disturbing
the rest of the wheel, as the lugs 66, with their screw B and nut, are accessible
from the outside, as already explained above.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A rim for velocipede and other wheels consisting of two portions, as explained,
one of them being divided in one or more places across its length, and being
provided with means for drawing together the ends of the divided parts, thereby
to reduce the circumference of the said portion, and to cause it to approximate
more closely to the other portion, which it surrounds, and thus to afford a gripping
space between the two portions for the tyre envelope, substantially as described
with reference to the accompanying drawing.
2. In a double rim for velocipede and other wheels, forming the outer portion a¹
with recesses a* for engaging with the edges d d of the tyre envelope D, provided
with enlargements or projections substantially as shewn and described.
Dated this 29th day of October 1891.
NEWTON & SON,
Agents for the Applicant..