Improvements in the Vulcanisation of India-rubber Articles and Fabrics Coated with India-rubber.
Year: 1895

page_text: Date of Application, 15th Aug., 1895
Complete Specification Left, 12th May, 1896-Accepted, 13th June, 1896
Improvements in the Vulcanisation of India-rubber Articles and
Fabrics Coated with India-rubber.
I, CHARLES DREYFUS of Clayton, near Manchester, in the County of Lancaster,
Director and General Manager of The Clayton Aniline Company Limited of
Clayton aforesaid, do hereby declare the nature of this invention to be as
follows:-
:-
In vulcanizing by means of sulphur chloride, india-rubber articles and fabrics
coated with india-rubber, this vulcanizing agent is generally dissolved in some
indifferent solvent, for example, carbon bisulphide, and petroleum spirit. The
first of these is highly objectionable on account of its inflammability and noxious
smell and is also very injurious to the health of the workpeople. The latter has
the serious disadvantage of not being a homogenous compound but a mixture of
hydrocarbons of different boiling points.
I have found that by employing pure benzene CH, as a solvent for the sulphur
chloride all these objections are avoided. Benzene is far less inflammable than
either of the above named solvents, it is not injurious to the health of the work-
people and leaves the vulcanized articles without any disagreeable smell whatever.
Its higher boiling point ensures a considerably restrained action of the S,Cl, upon
the goods to be vulcanized and thereby causes a more thorough and consequently
also more even vulcanisation of the india-rubber.
The process of vulcanizing with benzene as the solvent of the S,Cl, may be
carried out in exactly the same manner as when any of the other solvents named
are used. Therefore the machinery and appliances which are or may be used with
the old solvents can also be employed with the new one.
The benzene to be employed can be either commercially pure benzene boiling at
from 82° to 83° C. or what is known as 90% benzene, i.e. benzene, 90% of which
distils at 100° C. or any benzene boiling at intermediate temperatures between
the two.
Dated this 15th day of August 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents for the Applicant.
Improvements in the Vulcanisation of India-rubber Articles and
Fabrics Coated with India-rubber.
I, CHARLES DREYFUS of Clayton near Manchester in the County of Lancaster,
Director and General Manager of The Clayton Aniline Company Limited of
Clayton aforesaid 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 :-
In vulcanizing by means of sulphur chloride, india-rubber articles, and fabrics
coated with india-rubber, this vulcanizing agent is generally dissolved in some
Price Rd)

page_text: indifferent solvent, for example, carbon bisulphide, and petroleum spirit. The
first of these is highly objectionable on account of its imflammability and noxious
smell and is also very injurious to the health of the workpeople. The latter has
the serious disadvantage of not being a homogeneous compound but a mixture of
hydrocarbons of different boiling points.
I have found that by employing pure benzene CH, as a solvent for the sulphur
chloride all these objections are avoided. Benzene is far less inflammable than
either of the above named solvents, it is not injurious to the health of the work-
people and leaves the vulcanized articles without any disagreeable smell whatever.
Its higher boiling point ensures a considerably restrained action of the S,Cl, upon
the goods to be vulcanized and thereby causes a more thorough and consequently
also more even vulcanization of the india-rubber.
The process of vulcanizing with benzene as the solvent of the S,Cl, may be
carried out in exactly the same manner as when any of the other solvents named
are used. Therefore the machinery and appliances which are or may be used with
the old solvents can also be employed with the new one.
The benzene to be employed can be either commercially pure benzene boiling at
from 82° to 83° C. or what is known as 90% benzene, i.e. benzene, 90% of which
distils at 100° C. or any benzene boiling at intermediate temperatures between the
two, or any mixtures of such benzenes.
Suitable proportions are 100 parts by weight of benzene to 5 parts by weight of
sulphur chloride but I do not limit myself to these proportions.
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 vulcanization of india-rubber articles, or india-rubber coated articles,
the employment of sulphur chloride dissolved in benzene as hereinbefore set
forth.
2. As new articles of manufacture india-rubber articles, or india-rubber coated
articles, which have been vulcanized with the employment of benzene as herein-
before described and claimed.
Dated this 12th day of May 1896
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.