IMPROVEMENTS IN THE MANUFACTURE OR TREATMENT OF CAOUTCHOUC AND OTHER GUMS
Year: 1882

page_text: LETTERS PATENT to William Culien Horne, of 6 Victoria Road, Old
.P
Charlton, in the County of Kent for an Invention of IMPROVEMENTS IN
THE MANUFACTURE OR TREATMENT OF CAOUTCHOUC AND OTHER GUMS
Y 1000110
Оли
Charlton, in the County of Kent for an Invention of IMPROVEMENTS IN
THE MANUFACTURE OR TREATMENT OF CAOUTCHOUC AND OTHER GUMS
J
PROVISIONAL SPECIFICATION left by the said William Cullen Horne at
the Office of the Commissioners of Patents on the 8th December 1882.
WILLIAM CULLEN HORNE of 3 Victoria Road, Old Charlton in the County
of Kent. "IMPROVEMENTS IN THE MANUFACTURE OR TREATMENT OF CAOUTCHOUC
AND OTHER GUMS
"
This invention has for object to render caoutchouc, gutta percha, and similar
gums luminous by incorporation there with of luminous or phosphorescent sulphide
of calcium.
For this purpose according to my invention the gum is softened or dissolved by
the use of a suitable solvent such as sulphuret of carbon to which is added luminous
sulphide of calcium of a quality such as is not inferior to that known commercially
as Puzey's luminous powder which after exposure to light will continue luminous
for many hours. The proportions of the solvent and luminous sulphide of calcium
will vary according to the result required. In some cases a good result will be
obtained by using them in equal parts.-but these proportions must be altered if it
be desired to obtain for example, a soft wax compound that will spread or paint.
upon cloth, wood, glass or other surfaces. In some cases it is advantageous to
vulcanize the mixture by the addition of about ten per cent by weight of free
sulphur to the gum used, and for this purpose any suitable process may be adopted,
as for examples, the cold process of Parkes, or the steam process of Christopher
Nickel,
H.1

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Cullen Horne in the Great Seal Patent Office on the
6th June 1883.
WILLIAM CULLEN HORNE of 3 Victoria Road, Old Charlton in the County
of Kent "IMPROVEMENTS IN THE MANUFACTURE OR TREATMENT OF CAOUTCHOUC
AND OTHER GUMS
"
. This invention has for object to render caoutchouc, gutta percha, and similar gums
luminous by incorporation therewith of luminous or phosphorescent sulphide of
calcium.
For this purpose according to my invention the gum is softened or dissolved by
the use of a suitable solvent such as sulphuret of carbon, to the softened or dissolved
gum is added luminous sulphide of calcium of a quality such as is not inferior to
that known commercially as Puzey's luminous powder which after exposure to light
will continue luminous for many hours. The proportions of the solvent and
luminous sulphide, of calcium in relation to the elastic gum, caoutchouc, or gutta
will vary according to the result required. In some cases a good result will be
obtained by using the sulphide of calcium and gum in equal parts; but these
proportions must be altered if it be desired to obtain, for example, a soft compound
that will spread or paint upon cloth, wood, glass or other surfaces.
In some cases it is advantageous to vulcanize the mixture by the addition of
about ten per cent by weight of free sulphur to the gum used, and for this purpose
any suitable process may be adopted, as for examples, the cold process of Parkes with
chloride, of sulphur or the steam process of Christopher Nickel. Gums such as
above described when manufactured or treated according to my invention may be
employed for a variety of useful purposes including, amongst others, the manufacture
of luminous nose caps, of edges for stairs, to denote clearly the position of the stairs
by night, of luminous rubber handles and denoting marks for use on ship board,
and otherwise of life saving apparatus, such as sails for cast away boats and life
belts, of door mats to be used outside or in passages that are dark at night, of table
mats especially to shew the position of water bottles for night use and of balls for
various purposes including such as are used for playing tennis.
"
Having described the nature of my said invention and the manner of carrying it
into practical effect what I claim is the hereinabove described manufacture or treat-
ment of caoutchouc, gutta percha and similar gums with luminous sulphide of calcium
whereby such gums are rendered luminous in the dark after exposure to light as
above set forth.
I
U'
JI
:
In Witness whereof I the said William Cullen Horne have hereunto set my
hand and seal this fifth day of June, in the year of our Lord one thousand
eight hundred and eighty three.