Improvements relating to Elastic Tyres for Wheels of Velocipedes and other Vehicles.
Year: 1893

page_text: Date of Application, 7th Mar., 1893-Accepted, 22nd Apr., 1893
COMPLETE SPECIFICATION.
Improvements relating to Elastic Tyres for Wheels of Velocipedes
and other Vehicles.
I, ALBERT PELLETIER, of 18 Rue de l'Evêque, Brussels, in the Kingdom of
Belgium, Merchant, 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 elastic tyres for wheels of velocipedes and other vehicles
and comprises means whereby such tyres are easily secured to the rims of the
wheels.
According to my said invention I provide a fixed inner rim and a movable outer
rim fitting into the latter and forming with it a kind of jaw in which the edges
of the indiarubber constituting the tyre are clamped when the movable outer rim
is forced against the inner rim.
In the accompanying drawing, I have shown how my invention may be con-
veniently carried into practice.
enlarged scale.
Similar letters designate corresponding parts in all the figures.
Figure 1 is a transverse section showing the rim and tyre to an
A is the fixed inner rim, B the movable outer rim fitting into the inner rim and
adapted to be held rigidly against the same by any suitable means. I have shown
a screw-threaded rod C which projects from the outer part of the movable rim B
inwards, and traverses the inner rim A in order to be tightened by a nut d. This
mode of fixing the outer to the inner rim is given by way of example, it being
understood that any other mode may be employed. D is the indiarubber enclosing
the air-chamber E.
The two edges of the cover D are made in the form of dove-tails and are
inserted between the inner rim A. and the outer rim B as shown more particularly
in Figure 2, which is a transverse section showing the rims when they are open
so as to leave the space necessary for removing or inserting the dove-tail edges of
the said cover. The nut is taken off. F is a spoke of the wheel.
Figure 3 shows to a smaller scale a perspective view of the two rims when
closed.
Figure 4 is a perspective view of the inner rim.
The inner rim A is formed of more or less thin sheet metal, and the outer
rim B consists of the same or other material and may be made of any suitable
form.
As the diameter of this outer rim is a little larger than that of the inner
rim A there will be a break of continuity in its length when it is loosened.
In order to secure the tyre to the rim proper or inner rim its two extremities
are forced one against the other and are then held by any suitable means, such
as hooks, buttons and the like.
My improved mode of securing tyres to the rims of wheels has the advantage
of enabling the tyres to be very quickly mounted and dismounted.
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 what I
claim is :-
For securing tyres to the rims of wheels of velocipedes and other vehicles,
the employment of two rims the edges of which form iaws for clamping the

page_text: dove-tail edges of the tyre or outer cover when the rims are forced one against the
other, substantially as herein described and shown in the drawing.
Dated this 7th day of March 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.