Improvements in Treating Bully-tree Gum.
Year: 1894

page_text: Date of Application, 1st Sept., 1894
Complete Specification Left, 28th May, 1895-Accepted, 29th June, 1895
Improvements in Treating Bully-tree Gum.
I, ROBERT HUTCHISON, of Earlston, Prestwick, in the County of Ayr, North
Britain, Merchant, do hereby declare the nature of this invention to be as follows,
that is to say :-
My said invention has for its object by improvements in treating bully-tree gum
to obtain a substance of a compact, moderately-hard, and springy character,
advantageously applicable for making various articles which are desired to possess
the properties indicated.
In carrying out my invention I first dissolve the gum in oleic acid with the aid
of heat. The proportion of oleic acid may be varied but about two parts by
weight of the acid to each part of gum give satisfactory results. The heat, which
should be about that of boiling water, may be applied in any convenient way, as,
for example by means of a steam-jacketed pan and accompanied by mechanical
stirring or agitation, or by means of open steam in jets which act as stirring agents.
The whole of the gum becomes dissolved in the oleic acid when hot, but on cooling
a portion separates in flakes or separate particles, the remainder which is
comparatively soft or oleaginous remaining in solution.
The part which separates out of solution on cooling is the substance to obtain
which is the object of the invention. It is freed from the bulk of the oleic
solution by simple pressure; whilst to remove remaining adherent portions
advantage is taken of the property of oleic acid to form a soap with alkali and is
washed out by means of water having in solution caustic soda or potash. To insure
complete washing out, mechanical mixing or kneading apparatus is, preferably,
employed.
The substance separated, as hereinbefore described, in an undissolved state, and
which may be appropriately termed "Bullite" is dried, and is made into the
desired articles, by compression, or moulding, or in any other convenient way.
Instead of oleic acid any suitable oil yielding oleic acid may be used.
Dated this Thirty-first day of August 1894.
EDMUND HUNT,
Applicant's Agent.
Aprons in reading Buny-tree Gum.
I, ROBERT HUTCHISON, of Earlston, Prestwick, in the County of Ayr, North
Britain, Merchant, 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, that is to say :-
My said invention has for its object by improvements in treating bully-tree gum
to obtain a substance of a compact, moderately-hard, and springy character
advantageously applicable for making various articles which are desired to possess
the properties indicated.

page_text: In carrying out my invention I first dissolve the gum in oleic acid with the aid
of heat. The proportion of oleic acid may be varied but about two parts by
weight of the acid to each part of gum give satisfactory results. The heat, which
should be about that of boiling water may be applied in any convenient way, as
for example by means of a steam-jacketed pan and accompanied by mechanical
stirring or agitation, or by means of open steam in jets which act as stirring
agents. The whole of the gum becomes dissolved in the oleic acid when hot, but
on cooling a portion separates in flakes or separate particles, the remainder which
is comparatively soft or oleaginous remaining in solution.
The part which separates out of solution on cooling is the substance to obtain
which is the object of the invention. It is freed from the bulk of the oleic solution
by simple pressure; whilst to remove remaining adherent portions advantage is
taken of the property of oleic acid to form a soap with alkali and is washed out
by means of water having in solution caustic soda or potash. To insure complete
washing out, mechanical mixing or kneading apparatus is, preferably employed.
The substance separated, as herein before described, in an undissolved state, and
which may be appropriately termed "Bullite is dried, and is made into the
desired articles, by compression, or moulding, or in any other convenient way.
Instead of oleic acid any suitable oil yielding oleic acid may 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, I declare that what I
claim is :-
The obtaining of a useful substance termed "Bullite from bully-tree gum by
treating the gum with oleic acid substantially in the manner hereinbefore
described.
Dated this Twenty-seventh day of May 1895.
EDMUND HUNT,
Applicant's Agent.