Further Improvements in the Production of Artificial India-rubber and Gutta-percha like Substances
Year: 1897

page_text: Date of Application, 26th June, 1897
Complete Specification Left, 25th Mar., 1898-Accepted, 4th June, 1898
PROVISIONAL SPECIFICATION.
Further Improvements in the Production of Artificial India-rubber
and Gutta-percha like Substances.
I, FERRAR FENTON, Mortgage and Estate Agent, of 345, City Road, London, E.C.,
do hereby declare the nature of this invention to be as follows:-
-
I take the ingredients stated in the Specifications of my Patent No. 26548 of
the 24th of November 1896, for "Improvements in the production of artificial
gutta-percha & caoutchouc like substances" and after producing the said substances
take them and again place after having washed them in a water containing a solu-
tion of common salt or chloride of sodium into a bath composed of a solution of
sugar of lead saltpetre nitrate of potash nitrate of soda or other form of nitrate
and if considered desirable a small portion of copal gum and nitric acid deluted
in water and boil the whole together for such period as may be seen necessary to
increase the clasticity and cohesiveness of the magma or substances and to diminish
their adhesiveness or stickiness and thus produce an improvement in their texture
for certain purposes especially for the manufacture of wheel tires elastic bands
and all purposes where great toughness is desired.
I also effect the same object by mixing the same ingredients from the beginning
in a single bath with the raw or more or less oxydized vegetable oils, pitches, both
vegetable and mineral or bitumen or tars, creosotes or other forms of pyroligenous
acids and nitric acid mentioned in my above recited Patent No. 26548 of the 24th
November 1896 and macerating or boiling them all at the same time in the bath
at one single operation and thereby produce an elastic substance, that can be
worked up into articles of utility either by itself alone, or in conjunction or ad-
mixture with natural india-rubber, gutta-percha, or other substances,
As witness my hand this 25th day of June 1897.
Further Improvements in the Production of Artificial India-rubber
and Gutta-percha like Substances.
I, FERRAR FENTON, Mortgage and Estate Broker, of 345, City Road, London, E.O.,
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 follow-
ing statement:-
My invention relates to that class of manufactures known as india rubber and
gutta percha trades, or industries. My improvements have for their objects to

page_text: enable the production of goods or appliances of an elastic or reliliant nature to-be
produced at a cheaper rate than when made of pure natural india rubber and
gutta percha, and also to effect the making of goods of the above elastic and
resileant nature without the use of any natural india rubber or gutta percha or
in admixture with, or conjunction with those natural gums; and also to enable
the production of an insulating material for electric wires, or cables or machines,
without the use of natural rubber or gutta percha, or in admixture or conjunction
with those gums, thereby cheapening all such uses, or manufactures.
According to my invention I take the ingredients stated in the Specification of
my Patent No. 26,548 dated 24 November, 1896 which was sealed on the 27th
of March, 1897, "For improvements in the production of artificial gutta percha
and caoutchouc like substances," and after producing the said substances, I take
them and again place in a bath composed of a solution of sugar (or oxide) of lead;
or oxide of zine; saltpetre, (or nitrate of potash), or other form of nitrate, and,
if high flexibility is considered desirable for any use, a small proportion of copal
gum, (say five to ten per cent. of the magma's weight,) and nitric acid diluted' with
water, or added to the water of the bath in proportions of from ten up to any other
'percentage needed to effect the amalgamation of any of the various ingredients
used, and then I macerate them together, with or without heat, or by boiling for
such period as may be seen necessary, to increase the elasticity and cohesioness,
of the magma, or substances, and to diminish their adhesioness, or stickyness.
This, if heat is employed; is generally attained in a time of fifteen to thirty
minutes, more or less, and from six to twenty-four hours by cold maceration. This
produces an improvement in the texture of the magmas or substances, especially
for the manufacture of wheel-tyres, elastic bands, and all purposes where great
toughness is desired. But I always use the dilute nitric acid.
:
It must be understood that I do not mix all the materials or chemicals men-
tioned: viz. Sugar (or oxide) of lead; or oxide of zine; saltpetre, (or nitrate of
potash, or copal gum at one and the same time in the macerating bath, but only
one or other of them, in proportions of about five per cent. of sugar of lead; or
oxide of zinc; or more, if great hardness is desired, or five to seven-and-a-half of
saltpetre to the weight of the magma to be operated upon, and the same to be
well mixed or blended with the magma by stirring, rolling, or any method of
agitation.
I also, as an alternative plan, or process, effect the same object by mixing from
the beginning the same ingredients, or chemicals, with raw, or more or less oxidized
oils, pitches, (both vegitable and mineral pitches, and bitumen or tars, in a bath
as described in my above recited Patent No. 26,548, of November 24, 1896; and
macerating or boiling them together at the same time in one single operation,
instead of doing so at two separate periods, and I thereby produce the same elastic
substances, that can be worked up into articles of utility either by themselves
alone, or in conjunction or admixture with natural india rubber, or gutta percha,
or other substances.
These substances, as prepared by my above described invention, can be vulcanized
by admixture with sulphur or sulphur compounds in the same way as natural
india-rubber and gutta percha, by themselves, as I produce them, and also when
mixed or blended with natural india-rubber and gutta percha, the sulphur or
sulphur compounds being used in the same or even larger proportions than when
used upon these natural guma. My substances will also vulcanize when mixed
with lead, soap, or other form of oxydized oil ordinarily used in the rubber manu-
facture as a "filling" or admixture. Before vulcanizing I wash my substances
in an alkaline solution to remove acidity.
Having now particularly described and ascertained the nature of my said
invention, and the manner the same is to be performed, I declare that what I
claim is:-
1st. An improvement of my percha and caoutchouc-like substances by the above

page_text: described addition to themi of sugar (or oxide) of lead; or oxide of zine; or of salt-
petre or gum copal, or one of any of them in conjunction with gum copal.
2nd. That by the above processes I produce by my invention a magna, or elastic
substance, that can be vulcanized without the addition to it of natural india rubber
gum, or other substance whatsoever, except sulphur only, or sulphur compounds,
and this fact of my substance so vulcanizing I claim as my especial invention, as
no other rubber-substitute has hitherto been compounded that will do so.
3rd. That I thereby produce a magma or substance for insulating electric wires,
cables, or machines, either by itself when vulcanized alone, or when used and
vulcanized in union or admixture, or conjunction with natural india rubber gums,
or gutta percha, or other substances.
As witness my hand' this Twenty-fourth day of March 1808