An Improved Disinfectant or Antiseptic Preparation.
Year: 1894

page_text: Date of Application, 18th May, 1894
Complete Specification Left, 18th Feb., 1895-Accepted, 23rd Mar., 1805
PROVISIONAL SPECIFICATION.
An Improved Disinfectant or Antiseptic Preparation.
I JOHN THOM AINSLIE WALKER F.C.S. Analytical Chemist The Laboratory
Rishton, near Blackburn Lancs. do hereby declare the nature of this invention to
be as follows:-
This article is a preparation of thymol and glycerine (the former dissolving in
the latter without affecting its chemical or bacteriological properties). It is a
powerful germicide: one part in ten thousand of water being strong enough to kill.
most of the pathogenic forms. Hitherto the only solvents for thymol have been
caustic soda, alcohol and acetic acid, all of which interfere with its power as a
germicide. I propose to utilize my invention in the preparation of such articles,
as:-
Disinfecting powder; disinfecting soap; tooth powder; tooth wash; "anti-
septic" for preserving the size of cotton merchants; antiseptic dressing for
surgeons; a hair wash; a substitute for camphor for preserving furs etc.; and as a.
bath preparation. .
Dated this 17th day of May 1894. .
An Improved Disinfectant or Antiseptic Preparation.
I, JOHN THOM AINSLIE WALKER of The Laboratory, Rishton, in the County of
Lancaster, Analytical Chemist, 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 a new and improved manufacture of disinfectant and
antiseptic preparation consisting of a combination of thymol and glycerine; or
thymol, glycerine, and water, either in a liquid form or combined with a mineral
base, as a powder or dry substance. The thymol is disolved by the glycerine
without detrementally affecting its chemical or bacterological properties. The
improved preparation is a powerful germicide and disinfectant useful in the
manufacture of soap, tooth powders, or washes, and the like, and for disinfecting
purposes generally.
Such being the nature and object of this my said invention, the following is a
complete description of same.
Hitherto the only solvents of thymol have been caustic soda, alcohol, acetic acid,
and other laboratory and scientific solvents, which interfered with its properties and
powers as a germicide and disinfectant.
According to this invention the improved preparation consists of from 5 to
10 per cent. glycerine in water, to which is added rather less than 1 per cent. of thymol
which is thereby dissolved. Hitherto the solubility of thymol in water was,
according to eminent authorities, 1 in 1500 of water under ordinary conditions, but
by combining glycerine as above described, we increase the solubility from 1 in
1500 to about 1 in 500, or even to 1 in 400.

page_text: By combining from to 10 per cent. of glycerine, without adding water, with
thymol, the glycerine remains in a state of dissolution: in other words, the thymol
becomes and remains liquid with a small proportion of glycerine.
The preparation made as heretobefore described is a powerful germicide, and
disinfectant, about 1 part to 10,000 parts of water being sufficiently strong to kill
• bacteria or microbes.
Either of these solutions in which the thymol is carried by the glycerine, or
glycerine and water, may be combined with a mineral base of carbonate of lime,
or sulphate of lime, and for giving a better appearance to the preparation in this
the dry form, an aniline dye, such as the non-poisonous acid green is added.
The preparation is useful combined with such articles as disinfecting powder, or
soap, tooth powder, tooth wash, antiseptic washes, and the like.
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 :-
(1.) The solution of thymol with glycerine and water as herein described.
(2.) The disolution of glycerine in thymol as and for the purpose herein
described.
(3.) The solution of thymol in glycerine and water, combined with a base of
carbonate of lime, or sulphate of lime, as and for the purpose herein described.
(4.) The disolution of glycerine in thymol, combined with a base of carbonate of
lime, or sulphate of lime, as and for the purpose herein described.
Dated this 16th do of th
1005
BRIERLEY & HOWARD,
Penny Bank Chambers, Halifax, Agents for the Applicant.