AN IMPROVED PROCESS FOR THE MANUFACTURE OF A COMPOUND TO BE USED IN RENDERING ANIMAL AND VEGETABLE FIBRES AND FABRICS WATER REPELLENT AND PROOF 33 PROOF AGAINST DAMAGE FROM MOTHS, MILDEW AND VERMIN
Year: 1882

page_text: LETTERS PATENT to Clara Beatrice Warner of N° 1 South Place Finsbury
in the County of Middlesex, for an Invention of "AN IMPROVED PROCESS
FOR THE MANUFACTURE OF A COMPOUND TO BE USED IN RENDERING
ANIMAL AND VEGETABLE FIBRES AND FABRICS WATER REPELLENT AND PROOF
33
COMPLETE SPECIFICATION filed by the said Clara Beatrice Warner at the
Office of the Commissioners of Patents on the 18th November 1882.
CLARA BEATRICE WARNER of N° 1 South Place Finsbury in the County of
Middlesex "AN IMPROVED PROCESS FOR THE MANUFACTURE OF A COMPOUND
TO BE USED IN RENDERING ANIMAL AND VEGETABLE FIBRES AND FABRICS WATER
REPELLENT AND PROOF AGAINST DAMAGE FROM MOTHS, MILDEW AND VERMIN
"
The object of this invention is to obtain a compound which is soluble in hydro-
carbon solvents and free from acids and other impurities which hitherto have
been either chemically combined with or mechanically present in sufficient quantity
in all such compounds to hinder any of the processes patented or invented for
rendering animal and vegetable fibres and fabrics water repellent and proof
against damage from moths mildew and vermin being carried on in a successful
manufacturing manner.
The process consists in taking a solution of caoutchouc or other elastic gum and
solid paraffin or other solid hydrocarbon in Benzoline, petroleum or coal tar
naphtha, or any other light hydrocarbon solvent.
This solution may be prepared as described in a Specification filed by me at the
Patent Office in 1881 and numbered 5559 or in any of the following;
Daniel M. Lamb
"
"
Joseph Julius Sachs
Daniel M. Lamb
A.D 1879 N° 3484
A.D 1880 N° 2880
A.D
A.D
1880 N° 2883
1880 N° 3717
A.D
1881 N° 144
A D 1987 No 172

page_text: be either dissolved separately or together, mixed in any proportions, but I prefer
to use the proportion of 1 oz of caoutchouc and 1 oz of paraffin to 1 gallon of
solvent.
Into this solution I introduce hydrochloric acid Gas or chlorine as described in
my Specification of 1881 N° 5559 or in any of the following.-
.
Daniel M Lamb 1879 N° 3484
1880 No.2880.81
1880 N° 2883
ม
1881 N° 144
1881 N° 173
"
"
I then either filter the solution or after having allowed it to settle I draw off the
clear supernatent liquid from that containing the impurities.
This, liquid I distil at a temperature of from 145° to 165° Fahrenheit in closed
vessels with a worm or suitable condensing apparatus attached until no trace of
acid reaction is manifest on litmus paper held in the vapor issuing from the still.
I then draw off about 9/10 of the liquid remaining in the still which liquid is free
from acids, alkalies or other impurities.
I replace the solvent which has been distilled over in the last mentioned process
by the addition of an equivalent quantity of pure solvent.
The residual liquid in the still and the impure solvent distillate I employ for the
purpose of dissolving fresh quantities of caoutchouc or other elastic gum and
paraffin or other solid hydrocarbon.
.
By the above process I avoid the use of. alkaline materials for rendering the
compound free from acids.
The portions of the above process which I'claim as my Invention are
1. The purification of the compound by distillation as described above.
2nd. The use of the residual liquid from the still and the impure distillate for
treating the fresh materials.
3rd. The avoidance of the use of alkalies for the purpose of rendering the solutions
neutral.
In witness whereof I the said Clara Beatrice Warner have hereunto set my
hand and seal this Fifteenth day of November in the year of our Lord
One thousand eight hundred and eighty two
AT
TODIAR
מחזID