Improvements in the Manufacture of Certain Classes of India-rubber Goods.
Year: 1888

page_text: Date of Application, 29th Nov., 1838
Complete Specification Left, 29th Aug., 1889-Accepted, 5th Oct., 1889
TROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Certain Classes of India-rubber
Goods.
I, JUSTIN CAILLET, of 35 and 37, Galerie Vivienne, Paris, in the Republic of
France, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the manufacture of india-rubber compounds adapted for
special uses, particularly in the production of goods wherein it is desired to preserve
the elastic properties of the india-rubber but to afford the material protection
against wear.
Assuming my invention to be applied, by way of example, in the manufacture
of monlded goods, I serve the interior surface of the mould with glue, or other
preparation of a mucilaginous character, and upon the surface so coated I sift or
sprinkle ground emery or equivalent wear-resisting material. The mould is then
charged with the caoutchouc preparation in the usual manner and subjected to the
process vulcanisation, the heat incidental thereto causing the glue to be dissipated.
Upon the mould being opened and the article removed, the surface of the latter
will be found charged with the particles of emery or other wear-resisting material,
whilst the body of the article, being composed of india-rubber free from foreign
matters, will preserve its full elasticity. A protective coating of the kind described
also affords protection to india-rubber goods exposed to the heat of the sun.
The thickness of the superficial ingraining with the wear-resisting material may
be varied according to the purpose for which the article is intended.
Dated this 20th day of November 1800
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Certain Classes of India-rubber
Goods.
I, JUSTIN CAILLET, of 35 and 36, Galerie Vivienne, Paris, in the Republic of
France, Engineer, 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:-
This invention relates to the manufacture of india-rubber compounds adapted for
special uses, particularly in the production of goods wherein it is desired not only
to preserve the elastic properties of the india-rubber but to afford the material
protection against wear.
Assuming my invention to be applied, by way of example, in the manufacture
of moulded goods, I serve the interior surface of the mould with glue, or other
preparation of a mucilaginous character, and upon the surface so coated I sift or
sprinkle ground emery or equivalent wear-resisting material. The mould is then
charged with the caoutchouc preparation in the usual manner and subjected to the
process of vulcanisation; the heat incidental thereto causing the glue to be dissipated.
Upon the mould being opened and the article removed, the surface of the latter
will be found charged with the particles of emery or other wear-resisting material,
whilst the body of the article, being composed of india-rubber free from foreign
matters, will preserve its full elaticity. A protective coating of the kind described
also affords protection to india-rubber goods exposed to the heat of the sun.
77

page_text: The thickness of the superficial ingraining with the wear-resisting material may
be varied according to the purpose for which the article is intended.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I claim :-
1. The manufacture of india-rubber goods the surfaces of which are ingrained with
particles of emery or other wear-resisting material, whilst the elastic properties of
the india-rubber are preserved, substantially as herein described.
2. In the manufacture of moulded india-rubber goods, serving the internal surface
of the mould with glue or other preparation of a mucilaginous character and coating
the same with ground emery or equivalent wear-resisting material, the mould being
subsequently charged with india-rubber and the contents vulcanised.
Dated this 24th day of August 1889.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Agent for the Applicant.