Improved Composition or Compound for Use as an Insulating Material for the Manufacture of Trays or Receptacles, and for other Purposes.
Year: 1893

page_text: Date of Application, 20th Feb., 1893
Complete Specification Left, 20th Nov., 1893-Accepted, 13th Jan., 1894
PROVISIONAL SPECIFICATION
An Improved Composition or Compound for Use as an Insulating
Material for the Manufacture of Trays or Receptacles, and for
other Purposes.
I, THEODULE VICTOR MERCIER, of Saint-Ouen, in the Republic of France,
India-rubber Manufacturer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved composition or compound having india-
rubber and asbestos for its base and which by varying the proportions of the
ingredients and with a variable addition of sulphur can be applied to numerous
industrial purposes, particularly to the manufacture of insulators for accumulators,
vats, vessels for holding acids, and other fluids or substances, electric batteries,
pipes, mouldings, washers, cases of all kinds, plates, frames, insulating supports of
plates and frames and articles usually made of metal such as iron, steel bronze,
copper etc.
It can also be used for coating and covering electric wires and cables
and for other analogous purposes.
My product will very advantageously replace ebonite and possesses besides the
property of being uninflammable.
In carrying out my invention I employ pure Para rubber, pure asbestos and sulphur
in suitable and variable proportions, according to the purpose for which it is to be used
and the proposed selling price of the composition, for example to 1000 gramines of
pure india-rubber I can employ 10 to 300 per cent. and upwards of pure asbestos
with sulphur in the proportion of 5 to 10 per cent. for obtaining a flexible product,
10 to 20 per cent. for a semi-flexible product or 25 to 60 per cent. for a hard or non-
flexible product.
I
The mixture is effected under heat by placing the purified and cleaned india-.
rubber pulverized and screened asbestos and sulphur in a rolling and mixing
machine (the heating by steam or otherwise being effected preferably in the interior
of the cylinder) until a perfect mixture is obtained.
The paste which results from this intimate mixture is afterwards drawn out into
sheets of the required thickness or moulded into the required forms and dimensions.
From the sheets of the product are then cut rings, hoops, or other shaped pieces
which can be united, shaped and moulded according to requirements. In this manner
I can manufacture tanks for accumulators and the like, receivers and vessels of
various kinds, bullets, pump-bodies, packings for pistons and cylinders, valves,
cocks etc., etc. mouldings, washera, cases, plates, frames, insulating supports etc.
For certain purposes it is of advantage to add to the mixture of pure Para
rubber, asbestos and sulphur a quantity of gutta-percha which experience will
quickly enable the operator to determine according to the quality to be obtained
and the purpose for which the manufactured product is to be used.
2000

page_text: An Improved Composition or Compound for Use as an Insulating
Material for the Manufacture of Trays.or Receptacles, and for
other Purposes.
+
I, THÉODULE VICTOR MERCIER, of Saint-Ouen, in the Republic of France,
India-rubber 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 :-
My invention relates to an improved, composition or compound having india-
rubber. and asbestos for its base and which by varying the proportions of the
ingredients and with a variable addition of sulphur can be applied to numerous
industrial purposes, particularly to the manufacture of insulators for accumulators,
vats, vessels for holding acids, and other fluids..or substances, electric batteries,
pipes, mouldings, washers, cases of all kinds, plates, frames, insulating supports of
plates and frames. and articles usually made of metal such as iron, steel, bronze,
copper, etc. It can also be used for coating and.covering relectric wires and cables
and for other analogous purposes.
My product will very advantageously replace ebonite and possesses besides the
property of being uninflammable.
In carrying out my invention I employ pure Para rubber, pure asbestos and
sulphur in suitable and variable proportions, according to the purpose for which
it is to be used and the proposed selling price of the composition; for example
to, 1000 grammes of pure india-rubber I can employ 10 to 300 per cent.and upwards
of pure asbestos with sulphur in the proportion of 5 to 10 percent. for obtaining a
flexible product, 10 to 20 per cent. for a semi-flexible product or 25 to 60 per cent.
for a hard or non-flexible product.
The mixture is effected under heat by placing the purified and cleaned india-
rubber pulverized and screened asbestos and sulphur in a rolling and mixing
machine (the heating by steam or otherwise being effected preferably in the
interior of the cylinder) until a perfect mixture is obtained.
The paste which results from this intimate mixture is afterwards drawn out
into sheets of the required thickness, or moulded into the required forms and.
dimensions.
From the sheets of the product are then cut rings, hoops, or other shaped pieces.
which can be united, shaped and moulded according to requirements. In this
manner I can manufacture tanks for accumulators and the like, receivers and
vessels of various kinds, bullets, pump-bodies, packings for-pistons, and cylinders,
valves, cocks, mouldings, washers, cases, plates, frames, insulating supports and
other articles.
For certain purposes it is of advantage to add to the mixture of
rubber, asbestos and sulphur, a quantity of gutta-percha. which experience will
pure Para
quickly enable the operator to determine according to the quality to be obtained
and the purpose for which the manufactured product is to be used.
Having now particularly described and ascertained the nature of my said inven-
tion and in. what manner the same is to be performed, 1 declare that what I
claim is :-
1. The improved composition or compound for use as an insulating material
and for the manufacture of various articles, consisting in mixing and combining
Para rubber, pure asbestos and pure sulphur in varying proportious and in some
cases adding gutta-percba thereto, substantially as set forth.

page_text: 2. Articles manufactured from the composition
described.
Dated this 20th day of November 1893.
or compound hereinbefore
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.