Improvements in the Construction of Elastic Tyres and Cores for Ropes.
Year: 1894

page_text: Date of Application, 26th N:v., 1894
Complete Specification Left, 12th Aug., 1895-Accepted. 19th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Elastic Tyres and Cores for
Ropes.
I, CLAUS HEINRICH MICHELSEN, of Grohn-Vegesack, in Germany, Manu-
facturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the construction of elastic tyres for
velocipedes and other wheeled vehicles, and also of elastic tubes for strengthening
cables and the like, and it has for objects to render the tubes more durable and
elastic than those hitherto used for such purpose, and to obviate the inconveniences
arising from puncture and leakage in the use of pneumatic tyres.
In the construction of hollow elastic tyres I propose instead of forcing into them
compressed air as hitherto practised-and to which method the inconveniences
above mentioned are solely attributable--to introduce a core or lining composed of
a material combining the properties of a minimum of weight and a maximum of
elasticity. I form the hollow tube of india-rubber caoutchouc or other suitable
elastic substance, and within the bore I insert a core of sponge or other similar
poriferous material, having very low specific gravity and large volume, united with
great elasticity. The introduction of this core of spongy material may be effected
either by hand or by mechanical means as required by particular circumstances,
and the tubes so filled are adapted for use as pipes, tyres for wheels and like
purposes. They possess the advantages of dispensing with inflation by air, and
of avoiding injury by leakage as the material of the core is not subject to
damage from the effects of moisture, whilst the covers can readily be repaired
when required.
In applying my invention to the construction of cables or hawsers for towing
vessels and the like purposes, the elastic tube filled with the spongy material is
embedded in the strands of rope or hempen cable, the core of which is usually
formed of wire. By the use of tow-ropes constructed in this manner, the shocks
and irregular tension arising from the towing of vessels in rough weather, are more
or less absorbed in the elastic foundation of the cable or tow rope which is thereby
enabled to resist a greater strain than cables of ordinary construction, whilst the
weight of the rope may also be materially reduced.
Dated this Twenty-sixth day of November 1894.
COMPLETE SPECIFICATION.
Improvements in the Construction of Elastic Tyres and Cores for
Ropes.
I CLAUS HEINRICH MICHELSEN of Grohn-Vegesack in Germany, Manu-
facturer, 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 relates to improvements in the construction of elastic tyres for

page_text: velocipedes and other wheeled vehicles, and also of elastic tubes for strengthening
cables and the like, and it has for objects to render the tubes more durable and
clastic than those hitherto used for such purposes, and to obviate the inconveniences
arising from puncture and leakage in the use of pneumatic tyres.
In applying my invention to the construction of hollow elastic tyres, instead of
forcing into them compressed air as hitherto practised-and to which method the
inconveniences above mentioned are solely attributable,-I introduce a core or
lining composed of a material combining the properties of a minimum of weight
and a maximum of elasticity. I form the hollow tube of india-rubber caoutchouc
or other suitable elastic substance, and within the bore I insert a core of sponge or
other similar poriferous material, having very low specific gravity and large
volume, united with great elasticity.
The introduction of the core of spongy material may be effected either by hand
or by mechanical means as required by particular circumstances, and the tubes so
filled are adapted for use as tyres for wheels and like purposes. They possess
the advantages of dispensing with inflation by air, and of avoiding injury by
leakage as the material of the core is not subject to damage from the effects of
moisture, whilst the covers can readily be repaired when required.
In applying my invention to the construction of cables or hawsers for towing
vessels and other purposes the hempen material is wound upon or woven around
a core constructed of an elastic tube filled with spongy material.
In this case
the elastic core replaces the wire usually embedded in cables for strengthening
purposes.
By the use of tow ropes constructed in the manner described, the shocks and
irregular tension arising from the towing of vessels in rough weather are more or
less absorbed in, or compensated by the elastic foundation of the cable or tow
rope which is thereby enabled to resist a greater strain than cables of ordinary
construction, whilst the weight of the rope for a given length may also be sensibly
reduced.
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. In the construction of elastic tyres the use within a rubber tube of spongy or
poriferous substances to form a core or lining substantially as described.
2. Elastic cores for ropes and hempen cables constructed as and for the purposes
specified.
1
101 .
Dated th
101
day of August 1990.
For the Applicant,
GEDGE & FEENY,
Agents.