Improvements relating to the Covers of Pneumatic Tyres for Bicycles and other Vehicles.
Year: 1895

page_text: Date of Application, 3rd Dec., 1895
Complete Specification Left, 24th Jan., 1896-Accepted, 29th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements relating to the Covers of Pneumatic Tyres for
Bicycles and other Vehicles.
I FREDERICK ALFRED WILLIAMS, of 48 Twisden Road, Highgate Road,
London, N.W., Commercial Clerk, do hereby declare the nature of this invention
to be as follows:-
:-
This invention has reference to that class of cover for pneumatic tyres which is
secured in position within the rim of the wheel by means of hoops of wire or cord
located within the edges of the said cover.
The object of my invention is to facilitate the application and removal of the
cover, and to obviate the employment of nuts and similar devices for securing
together the ends of the wires from which the hoops are made.
According to the present invention, the securing wires are threaded in the usual
way through folds at the edges of the cover, but the ends of each wire, instead of
being secured together, or to the rim of the wheel, are made to overlap one another
some few inches. The ends of the wire are provided with stops which bear against
the ends of coiled springs surrounding the overlapped portions. Hoops are thus
formed which are clastic by reason of the overlapped ends and the coiled
compression springs in connection therewith.
In applying the cover to the rim of the wheel, the wires, being of suitable
length with regard to the diameter of the wheel, are easily sprung over the edge
of the rim while the air tube is deflated, and closely retain the edges of the
cover in position.
The removal of the cover is similarly effected while the air tube is deflated, by
springing the wires over the edges of the rim.
Dated this 3rd day of December 1895.
NEWTON & SON,
Agents for the Applicant.
Improvements relating to the Covers of Pneumatic Tyres for
Bicycles and other Vehicles.
I FREDERICK ALFRED WILLIAMS of 48 Twisden Road, Highgate Road,
London, N.W., Commercial Clerk, 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 has reference to that class of cover for pneumatic tyres which is
secured in position on the rim of the wheel by means of hoops made of wire or
cord, or other suitable material, located at the edges of the said cover.
The object of my invention is to facilitate the application and removal of the
cover, and to obviate the employment of nuts and similar devices for securing
together the ends of the wires from which the hoops are made.
According to the present invention, the securing wires are inserted in the usual
way at the edges of the cover, but the ends of each wire, instead of being joined
[Poire 77

page_text: together, or fixed to the rim of the wheel, are made to overlap one another, and
are provided at the extremities with stops, between which a coiled, flat, or any
other form of compression spring, is located.
Hoops are thus formed which are elastic by reason of the overlapped ends and
the compression springs in connection therewith, the elasticity being sufficient to
allow the edges of the cover to pass over the edges of the rim, and to recoil firmly
into the hollow thereof.
In the accompanying drawing
Fig. 1 is a cross section of a partly inflated pneumatic tyre and cover, with
securing wires or hoops in position.
Fig. 2 shows the ends of a securing wire provided with a compression spring of
coiled wire, according to my invention.
Fig. 3 is a plan view of a portion of a pneumatic tyre, with part of the cover
broken away and inner tube removed, showing, in dotted lines, a pair of securing
wires fitted according to my invention.
་
a are the securing wires, which are inserted in the edges of the cover A in the
usual way (see Fig. 1). The ends of each wire a overlap, and the extremities are
furnished with stops bb, by twisting them on themselves, or in some other convenient
manner.
Embracing the overlapped ends of the wire a, and between the stops bb, is
arranged the coiled compression spring c, the ends of which press against the
stops bb. A spring hoop is thus formed, which can be stretched to facilitate the
application of the cover provided therewith, to the rim of the wheel, and which,
by its recoil, will hold the edge of the cover to the rim when in place thereon.
One spring will usually be found to give sufficient elasticity to each hoop, but
two or more may be introduced at intervals, if desired.
It is obvious that these hoops may be used for securing solid or cushion india
rubber tyres, if desired.
It is preferred to open the fold of the cover at the point where the spring is, to
facilitate the insertion of the wire, and to employ a small flap, which is laid around
the spring (see Fig. 3), to prevent it from coming in contact with the inner tube
of the pneumatic tyre.
In applying the cover to the rim of the wheel, the wires, which are of suitable
length with regard to the circumference of the wheel, are sprung over the edge of
the rim while the air tube is deflated, and by their elasticity closely retain the
edges of the cover in position.
The removal of the cover is similarly effected while the air tube is deflated, by
springing the wires over the edges of the rim.
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 :-
Furnishing the securing hoops or wires of bicycle and other tyres, with com-
pression springs located between stops carried by the overlapped ends of the said
wires, substantially as described and for the purpose set forth.
Dated this 21th day of Lon1000