Improvements in Elastic Steel Tyres for Cycles and other Vehicles.
Year: 1895

page_text: Date of Application, 18th Nov., 1895-Accepted, 15th Jan., 1896
COMPLETE SPECIFICATION.
Improvements in Elastic Steel Tyres for Cycles and other
Vehicles.
A communication to me from BERNHARD FRÖHLICH, of 28, Südstrasse, Leipzig,.
in the Empire of Germany, Merchant.
I, EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 65 and 66, Chancery Lane, in the County of Middlesex, 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, and accompanying drawing, that is to say :-
This invention has for its object an elastic steel tyre, which can be used instead.
of the pneumatic tyres now ordinarily used, and by means of which improved tyre
very great elasticity is obtained.
Instead of the ordinary methods of construction, in which in the pneumatic tyre,.
elastic materials are brought more or less close to each other, or in which an
elastic tyre of indiarubber or other elastic material is attached to the wheel tyre.
by lacing, the tyre in the present invention is composed of a number of extremely
elastic steel springs, which are surrounded by an outer steel band, over which the
ordinary covering tyre is directly fitted.
In the accompanying drawing, which is in illustration of the invention,
Figure 1 is a section through the tyre, and
Figure 2 a side view with the covering tyre partly removed.
The wheel rim a is bent into U form in section, and is provided on both sides.
with wide flanges a¹. These flanges serve to hold the separate steel springs b,
which are bent into a circular form transversely, their outer ends being bent down.
and round as shewn, and having flanges & corresponding with those a' already
described. There are a large number of the springs band they are fixed at a
suitable distance apart round the wheel rim a. Between the flanges a¹ of the
wheel rim and those of the elastic steel springs a strip of indiarubber c is.
placed, in order to further increase the elasticity of the springs b. The springs b
may be fastened to the rim a by rivets, screws, or other equivalent means. Round
the elastic springs 6 is fitted a very light elastic steel strip or ring d, which is
attached to some or all of the springs. Outside the steel band d and the separate
elastic springs, the outer flexible covering tyre is fitted, and is held, by means of
its thickened edges f¹, by the bent steel bands 9, which can either be rivetted
to the springs b, or may consist of a separate ring in which case such ring g
must be first arranged round the wheel rim, and the separate springs be then.
introduced.
In this way an elastic tyre is formed at least as efficient as a pneumatic
tyre, and having the advantage of greater safety without the cost being
increased.
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 19:
Elastic steel tyres for cycles and other vehicles, consisting of a number of elastic
springs arranged round the circumference of the wheel rim, to which they are fixed
at the proper distance apart, with the intervention of an elastic packing ring, an.

page_text: endless very light steel ring being fitted round the several springs, and the whole
included in a flexible covering tyre the edges of which are held in position by bent
strips or rings, substantially as described and shewn in the drawing.
Dated this 18th day of November 1895.
EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.