Improvements in Rims and Tyres of Wheels for Bicycles and other Road Vehicles.
Year: 1897

page_text: Date of Application, 8th Apr., 1897
Complete Specification Left, 24th Nov., 1897-Accepted, 1st Jan., 1898
PROVISIONAL SPECIFICATION.
Improvements in Rims and Tyres of Wheels for Bicycles and other
Road Vehicles.
CHARLES GENTLE, of 214 Jackson Street East, in the City of Hamilton, in the
County of Wentworth, in the Province of Ontario, Dominion of Canada, Cabinet
Maker, do hereby declare the nature of this invention to be as follows:-
My invention consists of a tire, the inner part of which when inserted in the
outer part of a rim in annular, or continuous form, is securely locked therein.
The objects of my invention are, first, to provide a tire preferably constructed
of rubber in order to allow an elastic motion necessary for easy riding, second,
to provide a tire having an elastic tendency without being inflated, third, to
afford facilities for the proper insertion of the tire and the self locking of the
same in position, and also for the easy detachment of the tire.
Figure 1, is a front sectional elevation of a tire locked in position in its rim,
the upper part being broken.
Figure 2, is a front sectional elevation of the detached tire, and
Figure 3, is a front sectional elevation of the rim, all these figures view the
tire and rim as the parts nearest to the ground.
In the drawing the tire is indicated by the letter A, and the rim by B, which
when both are locked together in position they form a circle in section as seen
in Figure 1.
It will be observed that this rim has an annular channel formed with two inner
and continuous side projections or tongues 2, and two continuous side grooves 3,
and an angle shoulder 5, at each side which form a part of said tongues.
By this outer annular channelling of the rim the two continuous shoulders 5,
are produced and formed at suitable angles in order to receive the continuous
shoulders 6, of the tire for bicycles or other vehicles.
This tire has a continuous tongue 7, at each side to conform to the continuous
grooves 3, of the rim, and a continuous groove 8, at each side of the tire, to conform
to the continuous tongues 2, of the rim. It will be perceived that when these
tongues of the tire are locked in position in the grooves of the rim, and the tongues
of the rim are in the grooves of the tire, and the shoulders engage, a complete
sectional circle is produced, as seen in Figure 1, of the drawing.
The continuous channel or opening of the tire between its two adjustable walls 9,
must be of such a character that the distance from wall to wall will be the same
as the distance from the inner end of groove 8, to the outer edge of tongue 7, of
tire, this feature allows for the insertion of the flexible tire in position, and also
for its removal.
The continuous recess 12, in the interior of the rim, allows space for any
fastenings, such as nuts, for the spokes of the wheel.

page_text: It is desirable that only the inner parts of the said shoulders should be in con-
tact, that when mounted the weight would press the two inner walls a trifle closer
together, and the whole surface of the shoulders would come in close contact.
Improvements in Rims and Tyres of Wheels for Bicycles' and other
Road Vehicles.
CHARLES GENTLE of 214 Jackson Street East, in the City of Hamilton, in the
County of Wentworth, in the Province of Ontario, Dominion of Canada, Cabinet
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:-
My invention relates to improvements in rims and tyres of wheels for bicycles
and other road vehicles and consists of a tyre, the inner part of which is inserted
in the outer part of a suitable rim in annular, or continuous form, and securely
self locked therein.
The objects of my invention are, first, to provide a tyre preferably constructed
of rubber in order to allow an elastic motion necessary for easy riding, second,
to provide a tyre having an elastic tendency without air inflation, third, to
afford facilities for the proper insertion of the tyre in the rim and the self locking
of the tyre in position.
Reference being made to the drawings left with the Provisional Specification.
Figure 1, is a front sectional elevation of a tyre locked in position in its rim,
the upper part being broken.
Figure 2, is a front sectional elevation of the detached tyre, and
Figure 3, is a front sectional elevation of the rim, all these figures view the
tyre and rim as the parts nearest to the ground.
In the drawing the tyre is indicated by the letter A, and the rim by B, which
when both are locked together in position they form a circle in section as seen
in Figure 1.
It will be observed that this rim has an annular channel formed with two inner
and continuous side projections, or tongues 2, two continuous side grooves 3,
and an angle shoulder 5, at each side, which are a part of said tongues.
By this outer annular channelling of the rim the two continuous shoulders 5,
are produced and formed at suitable angles in order to receive the continuous
shoulders 6, of the tyre. These shoulders have a wide bearing surface and are
formed on a radial line in order that the rubber tyre may have a very wide bearing
surface against the rim, this is a very important element in the construction of
the tyre and also of the rim.
This tyre has a continuous tongue 7, at each side to conform to the continuous
grooves 3, of the rim, and a continuous groove 8, at each side of the tyre, to
conform to the continuous tongues 2, of the rim. It will be perceived that when
these tongues of the tyre are locked in position in the grooves of the rim, and the
tongues of the rim are in the grooves of the tyre, and the shoulders engage, a com-
plete sectional circle is produced, as seen in Figure 1, of the drawing. This
circular section of the rim and the tyre is very important in the construction
thereof, as well as in the general stability and appearance.

page_text: The continuous channel or opening of the tyre between its two adjustable walls 9,
must be of such a character that the distance from wall to wall will be the same
as the distance from the inner end of groove 8, to the outer edge of tongue 7, of
the tyre, this feature allows for the insertion of the flexible tyre in position, and
also for its removal.
The continuous recess 12, in the interior of the rim, allows space for any
fastenings, such as nuts, for the spokes of the wheel for bicycles and other road
vehicles.
It is desirable that only the inner parts of the said shoulders should be in contact,
that when the bicycle is mounted the weight would be evenly distributed, pressing
the two inner walls slightly closer together, therefore the whole surface of the
shoulders in close contact.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is: :-
A rim and tyre of the character described, consisting of a rim having a broad
radial and continuous shoulder at each side, a tyre having a broad radial and con-
tinuous shoulder at each side to engage with said shoulders of the rim, an annular
channel in the rim formed with two inner and continuous side tongues and grooves,
to conform to the continuous tongues and grooves of the tyre in order to form a
complete circle in section, when locked together, as described.
Dated this 10th day of November 1897.
JOHN H. HENDRY,
Agent.