Improvements in Cycle and other Wheels in which Springs are. used, and in the Method of Attaching such Springs to the Rims and Tyres.
Year: 1893

page_text: Date of Application, 14th Feb., 1893
Complete Specification Left, 14th Nov., 1893-Accepted, 16th Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in Cycle and other Wheels in which Springs are.
used, and in the Method of Attaching such Springs to the Rims
and Tyres.
I JOSEPH MICHAEL DAY of No. 30 Fitzwilliam Square in the City of Dublin
Barrister, do hereby declare the nature of this invention to be as follows:-
This invention consists in making the rim and tyre of cycle and other wheels,
between which the springs are usually inserted, with projections or wings of suitable
size, on each side of the width of the metal, so that one end of the spring used can
be attached to the rim by folding these projections over upon it in such a manner
as to keep it securely fixed and the other end of the spring can be attached to the
tyre in
similar manner or the projections or wings may be first folded over so as
to form sockets into which the ends of the spring may be easily inserted and the
strength of the spring will itself retain them in position without the necessity of
using rivets screws or other fastners which would be liable to become loose, or by
another method parallel slits may be made across the width of the metal at suitable
intervals and the portion of metal between these slits may be stamped up so as to
form a bridge under which the ends of the springs may be inserted.
The springs may consist of either one long flexible band of metal which passes
through the sockets or under the bridges and so laces the tyre and the rim together
or single springs may be used or doubled springs shaped something like the letter U
with the legs so bent as to give the necessary amount of spring and which when
the upper portion is attached to the rim the ends of the legs being slightly bent
outward will spring under the bridges or into the sockets and so be securely fixed.
Dated this 13th day of February 1893.
JOSEPH M. DAY.
COMPLETE SPECIFICATION.
Improvements in Cycle and other Wheels in which Springs are
used, and in the Method of Attaching such Springs to the Rims
and Tyres.
I JOSEPH MICHAEL DAY of No. 30 Fitzwilliam Square in the City of Dublin.
Barrister 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 :-
I make the rims and tyres between which the springs are inserted with pro-
jections on each side of the width of the metal. Fig. A. shows the strip of metal
with the projections out of which the rim or tyre will be subsequently formed,
Fig. B shows these projections folded over so as to form a bridge. These pro-
jections may be rounded and the bridge may be provided with a roller so as to
permit of the spring sliding more readily underneath it.
The outer circumference of the rim and the inner circumference of the tyre are
provided with a suitable number of these bridges according to the strength of the
spring used. Figure D. shows a wheel provided with the spring described in my
Provisional Specification consisting of a long band of flexible steel slightly less in
width than the tyre or rim passing freely underneath the bridges on the tyre and
rim alternately, as shewn by the enlargement C. Its ends are joined by means of
a slot upon one end and a button on the other, or by any other suitable means the
tyre and rim are thus laced together and any concussion or vibration experienced

page_text: by the outer tyre will by means of the sliding of the spring be distributed over the
whole circumference of the wheel.
It is obvious that instead of forming the bridges in the manner I have indicated
they may be braised on or otherwise affixed to the rims or tyres or parallel slots
may be made across the width of the tyre or rim and the portion of metal between
them stamped up so as to form the bridge.
Or instead of using bridges the converse method may be employed and the spring
may be provided with longitudinal slots through which it is attached to the rim or
tyre by means of buttons which are the equivalents for the bridges, the slots in the
spring being of sufficient length to preserve the sliding action of the spring.
Instead of complete bridges formed in the manner indicated being used oue of the
projections only may be made to fold over so far as to retain the spring leaving an.
apperture through which the spring may be inserted laterally, the appertures on
the rim should be on the opposite side to the appertures on the tyre.
Instead of the continuous spring shown in Fig. D. a number of short springs
may be used, these should be sufficiently long to permit of their being passed under
one of the bridges on the tyre and the two legs bent so that they will spring under
the adjoining bridges upon the rim or rice versa.
In order to prevent mud or dust getting on the spring and so impeding its free
sliding motion, a covering may be employed which may consist of an outer wrapper
or tyre of rubber or other suitable material, the edges of which are provided with
wires or hooks which fit into corresponding grooves or indents upon the rim. In
order to affix this covering the spring is compressed and the covering then put over
it, and when the wires or hooks engage with the grooves or indents on the rim the
spring is released the covering wrapper being thus held securely in its place. This
covering may be attached to the outer circumference of the metal tyre.
A solid rubber tyre may be fixed to the outer circumference of the metal tyre.
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
1. The combination consisting of rims and tyres provided with bridges and a
continuous spring which passes with a sliding motion underneath these bridges and
thus laces the rims and tyres together in the manner substantially as described.
2. The use of continuous sliding springs in the manufacture of spring tyres.
3. Making rims or tyres with the bridges shown at Fig. B.
4. Folding over projections upon rims or tyres so as to form bridges.
5. Attaching coverings for spring tyres to rims in the manner substantially as
described.
Dated this 13th day of November 1893.