An Improved Electrical Joint
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
An Improved Electrical Joint
I ALFRED FRANCIS BILDERBECK GOMESS of 33 Drayton Gardens South Kensington
in the County of London, Chemist, do hereby declare the nature of this invention
to be as follows:-
Hitherto Electrical joints have been made with unvulcanized rubber, which have
proved very unsatisfactory, and although various attempts have been made to
vulcanize such joints they have been a failure on account of the hot process of
vulcanization having been employed.
According to this invention I produce a vulcanized rubber joint, which is perfect,
by employing the cold process of vulcanization.
According to one way of carrying out this invention, I use a solution of proto-
chloride of Sulphur and bisulphide of carbon. The following proportions I have
found answer well, viz:-one part of protochloride of Sulphur to fifty parts of
bisulphide of carbon.
I first make the joint in the usual manner, i.e.; by wrapping strips of unvulcanized
rubber round the same, but according to my invention, after the expiration of three
or four days, I vulcanize the joint by applying the above solution on to the rubber
covered joint, and at the expiration of about half an hour I gently warn the joint
to drive off the bisulphide of carbon, thus completing the vulcanization.
Dated this Fifteenth day of October 1896.
BROWNE & Co.,
Agents for the Applicant.
I ALFRED FRANCIS BILDERBECK GOMESS, of 33 Drayton Gardens, South Kensington,
in the County of London, Chemist, 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 :--
Hitherto electrical joints have been made with unvulcanized rubber which have
proved very unsatisfactory, and although various attempts have been made to
vulcanize such joints, they have been a failure, on account of the hot process of
vulcanizing having been employed.
According to this invention I produce a vulcanized rubber joint which is perfect,
by employing the cold process of vulcanization.

page_text: According to one way of carrying out this invention I use a solution of proto-
chloride of sulphur and bi-sulphide of carbon.
The following are the proportions I have found answer well, viz:-One part of
protochloride of sulphur to 50 parts of bi-sulphide of carbon.
I first make the cint in the usual manner, i.e., by wrapping strips of unvulcanized
rubber round the joint, but according to this invention I vulcanize the joint, only
after the tension (to which the strips of rubber have been put, by winding round
the joint) has subsided, say after the expiration of three or four days.
The vulcanization I effect by applying the above solution on to the rubber covered
joint, and at the expiration of about half an hour 1 gently warm the joint to drive
off the bi-sulphide of carbon, thus completing the vulcanization.
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. The improved electrical joint made substantially as described.
2. In electrical joints, vulcanizing the rubber by the cold process.
3. In electrical joints, vulcanizing the rubber by the cold process, after the tension
on the rubber has subsided, substantially as described.
Dated this 10th day of July 1897.
BROWNE & Co.,
9 Warwick Court, Gray's Inn, London, W.C., Agents for the Applicant.