NEW OR IMPROVED INDIA RUBBER BANDS OR CORDS, AND CERTAIN IMPROVEMENTS IN MACHINERY FOR THE MANUFACTURE THEREOF
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by Carl Kesseler at the Office of the
Commissioners of Patents on the 16th June 1880. A communication from
The Continental India Rubber and Gutta Percha Company, of Hanover, in the
Empire of Germany.
CARL KESSELER, of 63, Mohrenstrasse, Berlin, W., in the Empiro of Germany,
Civil Engineer and Patent Solicitor. "NEW OR IMPROVED INDIA RUBBER BANDS
OR CORDS, AND CERTAIN IMPROVEMENTS IN MACHINERY FOR THE MANUFACTURE
THEREOF." A communication from The Continental India Rubber and Gutta
Percha Company, of Hanover, in the Empire of Germany.
This Invention consists in manufacturing india rubber bands or ropes by means
of a machine, such bands or ropes having an insertion of rope or twine of hemp,
cotton, leather, flax, jute, or other suitable material, or even metal; also improve-
ments in the present tubing or roping machine, by means of which the said
machine is adapted for the manufacture of the now article, these improvements
consisting of a hollow mouth core, the inside cavity of which is brought in contact
with the opening either through the bridge or through a central boring of the male
screw, and by means of which the material to be inserted can be carried through
for the purpose of coating it with india rubber.
India rubber tubes and bands are made in india rubber manufactories by the aid
of machinery which is very similar to the machinery used for the manufacturo of
carthen tubes, from which the tubing is cast in the form of a lengthened coil, and
is constructed with a male screw which turns in a cylinder surrounded by a steam
jacket, and receives the india rubber intended for moulding at a suitable opening in
the said machine. The rubber which is thus absorbed in the coils of the apparatus
is pressed forward and turned through a mould at the front, the section of the
mouth of which forms the shape which the tubing or cord thus expelled will take.
The improvements in this machine are intended to render it fit for the manu-
facture (according to this Invention) of india rubber bands or ropes, having an
insertion of hemp, cotton, leather, flax, juto, or other suitable material, or even
metal, which may with advantage take the place of similar bands, having an
insertion of woven material which hitherto have been exclusively manufactured by
manual labor. For this purpose the mould at the front of the machine through
which the material is expelled is constructed in such a manner that the solid core
which forms the cavity in the hose or piping is perforated in the middle, and this
cavity is made to communicate with the opening through a similar boring in the

page_text: bridge which fits to it in a slight curvo. Thus, for example, a pieco of rope or
twine can be inserted, and the india rubber, pressed forward by the male screw, is
pressed against the twine owing to the conical shape of the outside part of the
opening, and is thus made to draw the twine or rope along. In this manner an
india rubber band or rope is obtained containing the material which has been put
into the machine for the purpose.
In machines where the spindle has a central boring which corresponds directly
with that of the core at the mouth, the section of the bridge which holds the core
can be reduced to a minimum, as instead of passing the twine through the latter it
may pass straight through the spindle.
The articlo produced by this machine is new, as up to the present timo similar
bands were known only with insertion of woven material which by means of
manual labor was surrounded by india rubber.
The new article bas special advantages over the old.
1st. It is considerably cheaper.
2ndly. It has exactly the same section everywhere and is smooth all over.
3rd. The material inserted is much more elastic.
It is obvious that, according to the shape of the mould at the front, the band or
rope can be made in the most varied forms of section, with fluting, for example,
which offers considerablo difficulties in the manufacture by. manual labor.