IMPROVEMENTS IN SEAMLESS RUBBER TUBES WITH THREADS OR SUPPORTERS
Year: 1885

page_text: I, MYRON R. HUTCHINSON of Mannheim, Kingdom of Prussia, and Empire of
Germany, Manufacturer, do hereby declare tlie nature of said invention for
IMPROVEMENTS IN SEAMLESS RUBBER TUBES WITH THREADS OR SUPPORTERS, to be
as follows:-
India rubber tubing, on leaving the machine on which it is made, is soft warm
and sticky, and care must be taken not to pull it, for it will stretch out and not
come back.
.
In order to handle it, the tube is dusted over with some fine powder, usually
soapstone, which adheres to it firmly.
In order to vulcanize it, the tube is laid in a long pan, embedded in some
similar soft material, run into a boiler and subjected to the direct action of steam.
When the tube is vulcanized, it is dusty and dull in appearance, and shows signs
of whatever substance it has been in contact with.
The object of my invention is to produce a tube, which
1) can be kept free from dust.
2) can be varnished inside and outside before vulcanizing.
3) can be vulcanized in dry heat.
These three conditions combined will produce a permanent gloss during the
process of vulcanization.
To accomplish this, make a tube (which, before vulcanizing and, while still in
its soft warm state, is self supporting) by concealing within the walls of the tube
threads or supporters a b c d running longitudinally with it, these prevent the tube
from stretching and allow it to be put at once into a vertical position and hung by
one end; it is thus not in contact with anything to injure its surface; in this
position it is varnished and vulcanized.

page_text: I, MYRON R. HUTCHINSON, of Mannheim, Kingdom of Prussia and Empire of
Germany, Manufacturer, 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:-
India rubber tubing on leaving the machine on which it is made is soft warm
and sticky, and care must be taken not to pull it for it will stretch out and not
come back.
In order to handle it, the tube is dusted over with some fine powder, usually
soapstone which adheres to it firmly.
In order to vulcanize it, the tube is laid in a long pan, embedded in some similar
soft material, run into a boiler and subjected to the direct action of steam.
When the tube is vulcanized, it is dusty and dull in appearance and shows signs
of whatever substance it has been in contact with.
The object of my invention is to produce a tube:
(1) which during its manufacture can be kept free from dust.
(2) which can be varnished inside and outside before, vulcanization.
(3) which can be vulcanized in dry heat.
These three conditions combined will produce a permanent gloss during the
process of vulcanization.
To accomplish this, I make a tube which (before vulcanizing and while still in
its soft warm state) is self supporting, by concealing within the walls of the tube
threads or supporters a, b, c, d running longitudinally with it, as illustrated by the
drawing filed with the provisional specification, these prevent the tube from
stretching, and allow it to be put at once into a vertical position and hung by one
end; it is thus not in contact with anything to injure its surface, in this position it
is varnished and vulcanized:
.
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
1. A seamless rubber tube with threads or supporters running lengthwise of the
tube, for the purpose of holding it together during vulcanization.
2. A seamless rubber tube varnished inside and outside before vulcanizing in
dry heat.