Improvements in or applicable to the Vulcanizing of Endless Bands of India-rubber.
Year: 1894

page_text: Date of Application, 13th Nov., 1894
Complete Specification Left, 13th Aug., 1895-Accepted: 14th Sept., 1895
PROVISIONAL SPECIFICATION.
Improvements in or applicable to the Vulcanizing of Endless Bands
of India-rubber.
We JOHN THOMAS SOUTHWORTH of No. 70 Heywood Street, Moss Side,
Manchester Engineer with Messrs. Charles Macintosh & Company Limited
and CHARLES MACINTOSH AND COMPANY LIMITED of Cambridge Street,
Manchester, India-rubber Manufacturers, do hereby declare the nature of this
invention to be as follows :-
―
Our said invention relates to improvements in the vulcanizing of endless bands
of india-rubber and is principally applicable to the manufacture of such bands
as form the casings or external covers of pneumatic tyres for vehicles.
According to our said invention the band is first made in the ordinary manner as
a strip and the ends are joined or cemented together by the usual means.
The endless band thus formed is placed around a straight core and the whole is
inserted in a flat mould suitably divided to receive the core with its surrounding
band and to permit of its removal after vulcanizing.
The mould may be a plain iron mould or may have a liner of white metal or
other suitable material.
The core is so shaped at the sides adjacent to the edges of the band as to rest on
or in and to be held in position by the inner surfaces of the divided mould: The
ends and in some cases the sides of the core and the corresponding parts of the
mould are rounded. Suitable channels or cavities are provided to receive the
excess rubber which exudes during the process of vulcanizing.
The face of the core is in some cases engraved with letters or figures and with
designs in intaglio or relief such as corrugations or lozenges so that after
vulcanizing the band may be turned inside out when the design on the core will be
on the outer surface.
Where it is not intended to turn the band as last described the design may be
formed on the inner surface of the mould itself.
Dated this 12th day of November 1894
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or applicable to the Vulcanizing of Endless Bands
of India-rubber.
We JOHN THOMAS SOUTHWORTH of 70 Heywood Street, Moss Side,
Manchester, Engineer with Messrs. Charles Macintosh & Company Limited
and CHARLES MACINTOSH AND COMPANY LIMITED of Cambridge Street,
Manchester, India-rubber Manufacturers, 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 :-
Our said invention relates to improvements in the vulcanizing of endless bands
Price Rd1

page_text: of india-rubber and is principally applicable to the manufacture of such bands
as form the casings or external covers of pneumatic tyres for vehicles.
According to our said invention the band is first made in the ordinary manner as
a strip and the ends are joined or cemented together by the usual means.
The band is then vulcanized in the mould hereinafter described with reference to
the accompanying drawings and is then turned inside out.
DESCRIPTION OF DRAWINGS.
Figure 1 is a longitudinal sectional elevation of the mould containing the core
and band. The upper half of the mould is indicated by dotted lines.
Figure 2 is a plan with the dotted part of Figure 1 removed.
Figure 3 is a section through x-y of Figure 2.
Figure 4 is an enlarged view of one side of Figure 3.
The endless band a is placed around a straight core band the whole is inserted
in a flat mould c suitably divided to receive the core with its surrounding band and
to permit of its removal after vulcanizing.
The mould may be a plain iron mould or may have a liner of white metal
or other suitable material.
The core is so shaped at the sides adjacent to the edges of the band as to rest
on or in and to be held in position by the inner surfaces of the divided mould.
The ends of the core. and the corresponding ends of the mould are rounded.
Suitable channels c¹ or cavities are provided to receive the excess rubber which
exudes during the process of vulcanizing. Handles b² are provided for lifting the
core.
The face of the core is in some cases engraved with letters or figures and with
designs in intaglio or relief such as corrugations or lozenges so that after
vulcanizing the band may be turned inside out when the design on the core will be
on the outer surface.
i
One of the advantages we obtain by the hereinbefore described process of
vulcanizing is that that surface which ultimately becomes the outer one is not
marked by the junction line of the mould.
Where it is not intended to turn the band as last described the design may be
formed on the inner surface of the mould itself.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is.-
1. The hereinbefore described method of producing a vulcanized endless band of
india rubber substantially as set forth.
2. The apparatus for vulcanizing endless hands of india rubber substantially as
set forth and shown.
3. A mould for vulcanizing endless bands of india rubber consisting of the
divided straight mould c and the straight core 6 substantially as set forth and
shown.
Dated this 12th day of August 1895
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicants.