Improved Pliable or Elastic "Spirals" Composed of Two or More Spiral Springs one within the other and Wound in Opposite Directions, Applicable to Various Useful Purposes.
Year: 1887

page_text: Date of Application, 20th June, 1887.
Specification Accepted, 26th Aug., 1887.
Improved Pliable or Elastic "Spirals" Composed of Two or More
Spiral Springs one within the other and Wound in Opposite
Directions, Applicable to Various Useful Purposes.
I IDA FRANZISKA CLASEN, Merchant, of 37 Muskauerstrasse, Berlin in the Empire
of Germany 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 a spiral composed of two separate spiral springs set one
within the other, and wound in opposite directions, such spirals are to be sewn or
woven as elastic bands in leather or other suitable material as for instance for belts,
or a number of them laid together as for stay bones instead of the usual bones and
busks, and for all general industrial purposes to which they are applicable wherever
with a certain amount of stiffness pliability is required and especially the quality of
taking various shapes.
Figures 1 and 1 shew views of the spirals longitudinally and in plan. The inner
spiral spring b made of some elastic material, such as steel wire or brass wire, has
such an outer diameter that it can just be inserted in the outer spiral spring a, which
is of the same or of other suitable material, so that when the latter expands it can
also expand, but when the outer spiral spring is not stretched it also remains
unstretched. Over this spiral spring a, a third and fourth etcetera can be placed.
Such spirals can be woven or sewn into stuff in any desired number and in any
arrangement as shown in Figures 2ª 2b and 2c.
In Figure 2ª the spirals are woven in separately side by side and at a certain
distance apart. In Figure 2b the spirals lie in continuous curves; in Figure 2° they
are arranged in retrograde curves. Such an arrangement of the spirals in band form
can be used for instance for belts. In Figure 3 there are three such spirals lying
close together woven or sewn into the stuff, and thus form spring strips, which while
having a certain stiffness, still yield sufficiently to be able to assume certain shapes ;
in that capacity they form an admirable substitute for the bones and busks of stays
which have hitherto usually been formed of flat springs and in consequence of their
stiffness easily break. The spirals are likewise suitable for elastic necks for whips

page_text: etcetera in place of the necks hitherto made out of whip cord. Figures 4, 5 and 6 show
other means of using the spirals. Here the spiral springs which are laid and bent
in a suitable manner and are placed on or between a layer of stuff or leather are used
as socks for ventilating the inner part of the shoe. For this purpose the spirals are
bent in the way shown in Figure 5 and the spirals thus bent are laid in rows close
together, between two layers or upon one layer of stuff or of leather, and are fastened
there in a suitable manner. Between the spirals the covering c, of stuff or leather
can be cut open so as to allow of a circulation of air over and under the covering c.
The back ends of the spirals are longer than the sock, and when the sock is laid in
the boot they reach as far as the upper edge of the leg of the boot so that the air can
enter inside the spirals. In order to facilitate the egress of the air from the spirals,
the windings of the spirals may advantageously be drawn apart.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is:
The spirals consisting of two or more spiral springs a and b, laid one within the
other and wound in opposite directions. to be sewn or woven into leather or other
suitable material in any number for industrial purposes substantially in the manner
and for the purposes herein before described and represented in the drawings
annexed.