Improvements in the Tyres of Velocipedes and other Vehicles.
Year: 1893

page_text: Date of Application. 17th June, 1893-Accepted, 22nd July, 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by EMILE HENRI GRENET, of No. 13, Rue de
Rambuteau, Paris, in the Republic of France, Jeweller.]
Improvements in the Tyres of Velocipedes and other Vehicles.
I, HENRY HARINGTON LEIGH, Assoc. M. Inst. C.E., Fel. Ch. Inst. P.A.,
F.I. Inst., practising as Phillips & Leigh, at No. 22, Southampton Buildings,
Chancery Lane, in the County of Middlesex, Engineer and Chartered Patent
Agent, 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 the elastic tyres of velocipedes and
other vehicles and the object of it is to obviate the drawbacks and inconveniences
which attend the liability of the well known and deservedly popular pneumatic
tyre to accidental punctures and consequent collapse. The present invention
combines in itself the perfect elasticity of the pneumatic tyre without its liability
to collapse.
In order that the invention and the means by which it is to be carried into
practical effect may be thoroughly understood, I will now describe it and them
in detail, referring in so doing to the accompanying figures which are to be taken
as part of this Specification and read therewith.
Fig. 1 is a perspective view, partly in section, illustrating the construction and
application of my invention.
Figs. 2 and 3 are details illustrating two modified forms of the elastic cord.
A is a rubber cord, either hollow as shewn in Figure 2 or solid as shewn in
Figure 3, wound into a spiral with a quick pitch, the spirals touching. The
winding is done round a mandril of the same diameter as the hollow centre of the
tyre. When the desired length has been made, it is encased in a sheet B of cloth
and rubber combined, or other appropriate material, which is wrapped or bound
tightly round it. The mandril is next withdrawn leaving a tube constructed out
of hollow or solid rubber cord spiralised and encased in combined rubber and cloth
sheeting. As the mutual independence of the spirals of each other allows them to
slip over each other a little, the improved tube is much more elastic than an
ordinary closed one. Further, each spiral is in relief and is separated from its
neighbours by a parallel groove. The effect of this alternation of concave and
convex is to give the tyre a practical hold upon the ground, and slip is much less
likely to occur with the improved tyre than with those of plain contour.
The tube made as above described is held to the wheel rim D by a rubber tyre-
cover C having a thickened tread. Each of the two side edges of the said cover
has a metal wire c embedded in it and these edges are made fast to the rim in
convenient way.
any
The rubber rod may be of any suitable section and thickness.
Instead of the two covers, one of cloth and the other of rubber, only one, either
of cloth or of rubber, may be used.
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.
A tyre for the wheels of velocinedes.
Ox other chil

page_text: constructed by the spiral winding of a hollow or solid rubber cord surrounded by
or encased in one or more covers of rubber cloth, rubber or other suitable material.
Dated this 17th day of June 1893.
HENRY H. LEIGH,
Chartered Patent Agent.