Improvements in Tires and Rims of Wheels for Cycles and other Vehicles.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Tires and Rims of Wheels for Cycles and other
Vehicles.
I, WILLIAM FRASER RAE, of Lincoln's Inn, and of 36, Holland Villas Road,
Kensington, in the County of Middlesex, Barrister-at-Law, do hereby declare
the nature of this invention to be as follows:-
This invention relates to improvements in tires and rims of wheels of cycles
and other vehicles of the kind forming the subject of Letters Patent granted to
me and bearing date 8th July 1896 No. 15108, and 8th April 1897 No. 8935 and
which are known under the registered Trade Mark word telo-tire."
"
According to my present invention I construct the rim of the wheel somewhat
in the form illustrated in Figure 7 of the drawings accompanying the Specification
of my said Patent No. 8935 of 1897 that is to say the transverse section of the
said rim forms the greater portion of a circle but having an outer peripheral
opening through which the tread portion of the solid outer tire projects, the
opening being bounded by flanges projecting outwardly, and to a lesser extent
inwardly in relation to the circular portion of the section of the rim. Hitherto
these flanges have been attached to the rim by brazing, or soldering for example,
but according to the present invention I form the rim. of one piece of mild steel,
aluminium or other suitable metal or material. The circular portion of the rim
is of a single thickness, the flanges being formed by bending the edges of the
metal outwards, and then inwards upon itself so that the portions of the flanges
which are outside the rim are of double thickness of metal, and the portions inside
the rim are of single thickness. Or the edges of the metal may be first bent
inwards, and then outwards upon itself, in which case the portions of the flanges
which are inside the rim will be of double thickness of metal, and the portions
outside the rim of single thickness. The transverse joint of the rim may be
made by brazing or other suitable means or the rim may be jointless.
In order to dispense with the notch M referred to in the Specification of my
aforesaid Patent No. 8935 of 1897 I construct the solid outer tire in such a manner
that the outer edges of its flanges or wings can be brought together and thus
be passed readily between the beforementioned flanges and into the circular body
of the rim where they again assume their normal position, and are retained therein
by the pressure of the inner tube when inflated.
In order to allow the cycle to be used, even after the deflation of the inner
tube and until it is convenient to repair the puncture of such tube, I sometimes
form a bead on each side of the tread portion of the solid outer tire, which bear!
serves to prevent the said tire from being forced, by the weight of the rider,
to enter beyond a certain distance between the flanges of the rim, and in conie

page_text: cases I employ specially shaped bolts passed through holes in the solid outer
tyre for the same purpose, extensions of such bolts and of their corresponding
nuts bearing on the rim.
COMPLETE SPECIFICATION.
Improvements in Tires and Rims of Wheels for Cycles and other
Vehicles.
I, WILLIAM FRASER RAE, of Lincoln's Inn, and of 36, Holland Villas Road,
Kensington, in the County of Middlesex, Barrister-at-Law, 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 improvements in tires and rims of wheels of cycles
and other vehicles of the kind forming the subject of Letters Patent granted to
me and bearing date 8th July 1896 No. 15,108, and 8th April 1897 No. 8935 and
which are known under the registered Trade Mark word telo-tire."
According to my present invention I construct the rim of the wheel somewhat
in the form illustrated in Figure 7 of the drawings accompanying the Specification
of my said Patent No. 8935 of 1897 that is to say the transverse section of the
said rim forms the greater portion of a circle but having an outer peripheral
opening through which the tread portion of the solid outer tire projects, the
opening being bounded by flanges projecting outwardly, and to a lesser extent
inwardly in relation to the circular portion of the section of the rim. Hitherto
these flanges have been attached to the rim by brazing, or soldering for example,
but according to the present invention I form the rim of one piece of mild steel,
aluminium or other suitable metal or material. The circular portion of the rim
is of a single thickness, the flanges being formed by bending the edges of the
metal outwards, and then inwards upon themselves so that the portions of the
Hanges which are outside the rim are of double thickness of metal, and the
portions inside the rim forming shoulders therein are of single thickness. Or
the edges of the metal may be first bent inwards to form the shoulders, and then
outwards upon themselves, in which case the portions of the flanges which are
inside the rim will be of double thickness of metal, and the portions outside the
rim of single thickness.
Figure 1 in the accompanying sheet of drawings represents the cross section
of a wheel-rim constructed in accordance with the first described method, namely
by bending the edges of the metal outwards as at A, and then inwards upon itself
as at B the inner edge forming an inwardly projecting shoulder B1 and Figure 2
represents the cross section of a wheel-rim constructed in accordance with the
second described method, namely by first bending the edges of the metal inwards,
as at C, and then outwards upon itself as at D, the inwardly projecting shoulder
being formed by the fold at Ċ as shown.
In the construction shown in Figure 1 a bead may be formed on the edge of
the metal forming the shoulder B inside the rim, as shown at E in Figure 3;
and in the construction shown in Figure 2 a bead may be formed on the edge
of the metal outside the rim as shown at F in Figure 4.

page_text: The transverse joint of the rim may be made by brazing or other suitable
means, or the rim may be made without a transverse joint.
In order to dispense with the notch M in the rim, referred to in the Specification
of my aforesaid Patent No. 8935 of 1897 to facilitate the insertion of the tire,
construct the solid outer tire G, Figures 5 and 6 of the drawings accompanying
this specification with a slit or narrow groove G¹ at each side thereof in such a
manner that the outer edges of its flanges or wings H can be brought together
or bent more or less parallel to one another, as shown in Figure 5, and thus be
passed readily between the beforementioned flanges B or D, Figures 1 to 4, and
into the circular body I of the rim, where they again assume their normal position
with reference to the solid part G of the tire as shown in Figures 4 and 6.
These slits or grooves G also facilitate the locking, as it were, of the flanges
or wings H behind the internal shoulders of the rim as shown by dotted lines
in Figure 4.
The flanges or wings H may also be provided with beads G3 adapted to take
behind the shoulders B¹ or C as shown in Figure 7, or they may be provided
with grooves G3 adapted to receive the said shoulders as shown in Figure 8,
either arrangement facilitating the locking of the flanges or wings H behind
the internal shoulders B or C of the rim.
In order to allow the cycle to be used, even after the partial or entire deflation
of the inner tube, a bead or projection J, Figures 5 and 6, may be formed on
each side of the tread portion G of the solid outer tire, which bead or projection
serves to prevent the said tire from being forced, to enter beyond a certain distance
between the flanges 3 or D of the rim.
The tire G H can be withdrawn from the rim by simply pulling it outwards,
when the flanges or wings H close in towards one another and assume the form
shown in Figure 5 so that they can pass out between the flanges B or D
of the rim.
The solid tire and the pneumatic tube K are shown in position in the rim by
dotted lines in Figure 4.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
First. A wheel-rim for use with a combined solid and pneumatic tire, having
the flanges which guide the solid part of the tire, and the internal shoulders
against which the flanges or wings of the solid tire rest, made in one piece with
the body of the rim, substantially as described.
Second. A solid wheel-tire having flanges or wings H, with slits or grooves G₁
formed in it to enable the said flanges or wings to be bent down and brought
together more or less parallel to one another to facilitate the insertion of the
tire into, and its withdrawal from the rim, the said slits or grooves also facilitating
the locking of the flanges or wings behind the internal shoulders of the rini,
substantially as described.
Third. The combination of wheel-rim constructed as herein described, and
having internal shoulders, with a solid tire constructed as herein described and
having flanges or wings H adapted, by means of slits or grooves G¹, to be bent
together to facilitate the insertion of the tire into and its withdrawal from the
rim, the said slits or grooves also facilitating the locking of the said flanges or
wings of the tire behind the said internal shoulders of the rim by the inflated
tube within the rim, the said solid tire having a head or projection on each side
of its tread portion, substantially as described.
Fourth. A solid wheel-tire having flanges or wings H with beads G2 adapted
to take behind the internal shoulders of the rim to facilitate the locking of the
said flanges or wings of the tire behind the said internal shoulders of the rim
substantially as described.
Fifth. A solid wheel-tire having flanges or wings H with grooves G² adapted

page_text: to receive the internal shoulders of the rim to facilitate the locking of the said
flanges or wings of the tire behind the said internal shoulders of the rim sub-
stantially as described.
Dated this 10th day of May 1900