AN IMPROVED PROCESS OF WATERPROOFING FABRICS, LEATHER, SKINS, CORK, AND OTHER MATERIALS
Year: 1883

page_text: LETTERS PATENT to Ernest de Pass, of 68 Fleet Street, in the City of London,
Fellow of the Institute of Patent Agents, for an Invention of AN IMPROVED
PROCESS OF WATERPROOFING FABRICS, LEATHER, SKINS, CORK, AND OTHER
MATERIALS, communicated to him from abroad by Albert Lèbre, of 1, Boulevard
Saint-Denis, Paris, France
PROVISIONAL SPECIFICATION left by the said Ernest do Pass at the Office
of the Commissioners of Patents on the 5th November 1883.
ERNEST DE PASS, of 68, Fleet Street, in the City of London, Follow of the
Institute of Patent Agents, AN IMPROVED PROCESS OF WATERPROOFING FABRICS,
LEATHER, SKINS, CORK, AND OTHER MATERIALS, Communicated to me from abroad
by Albert Lèbre, of 1, Boulevard Saint-Denis, Paris, France.
This invention has for its object an improved process of waterproofing fabrics,
leather, skins, cork and other materials.
This process of waterproofing not only gives the most absolute impermeability to
all kinds of fabrics, but also renders them more firm and supple; at the same time
the fabrics so treated become imputrescible and unaffected by acids.
This process is carried out in the following manner;
In a vessel, open to the atmosphere, the following substances, in or about the
proportions hereinafter mentioned, are placed, that is to say :-
Liquid Bordeaux terpentine, or turpentine paste 6 Kilos (13-20 lbs).
Tallow
Wax
Styrax (Liquid amber) (optional)
1,500 Kilos (3.30 lbs.)
500 grammes (1·10 lb)
200 grammes (0.44 lbs.)
The vessel is heated in a water bath (bain-marie), maintained at a temperature

page_text: The whole of the substances become melted together, and are stirred with a
wooden spatula; heat is applied and agitation carried on for about twenty minutes,
that is to say, until the several substances become intimately mixed together.
In this state, and at the temperature it possesses, the product may be at once
applied for the waterproofing of fabrics, or other materials.
If, for example, it is required to waterproof cloth or canvas for sacks, sails, cart
coverings, or the like, the fabric is immersed in the melted matter, and is allowed
to remain therein from one to five minutes, according to its thickness.
The fabric is taken from the vessel and the excess of waterproofing material
remaining thereon, is then removed by causing it to pass between two cylinders
heated by steam, or otherwise.
The fabric thus treated is finally allowed to dry in the open air.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Ernest de Pass in the Patent Office on the 1st May 1884.
ERNEST DE PASS, of 68 Fleet Street, in the City of London, Fellow of the
Institute of Agents. AN IMPROVED PROCESS OF WATERPROOFING FABRICS,
LEATHER, SKINS, CORK AND OTHER MATERIALS, Communicated to ine from abroad
by Albert Lòbro, of 1 Boulevard Saint Denis, Paris, France.
This invention has for its object an improved process of waterproofing fabrics,
leather, skins, cork, and other materials.
This process of waterproofing not only gives the most absolute impermeability to
all kinds of fabrics, but also renders them more firm and supple; at the same time
the fabrics so treated become imputrescible and unaffected by acids.
This process is as follows;-
In a vessel open to the atmosphere, the following substances are placed, and in
or about the proportions hereinafter mentioned, that is to say
Liquid Bordeaux turpentine, or turpentine paste-6 kilos (13-20 lbs)
1.500 kilos (3-30 lbs)
Tallow
Wax
Styrax, (Liquid amber (optional))
500 grammes (1-10 lb.)
200 grammes (0·44 lbs.)
The vessel is heated in a water bath (bain marie) maintained at a temperature
of about 90° Contigrade (194° Fah).
The whole of the substances become melted together and are stirred with a
wooden spatula; heat is applied and agitation carried on for about twenty minutes,
that is to say, until the several substances have become intimately mixed together.
In this state, and at the temperature it possesses, the product may be at once
applied to the waterproofing of fabrics, or other materials.
If, for example, it is required to waterproof cloth or canvas for sacks, sails, cart
coverings or the like, the fabric is immersed in the melted material, and is allowed
to remain therein from one to five minutes, according to its thickness.
The fabric is taken from the vessel, and tho excess of waterproofing material
remaining therein, is then removed, by causing it to pass between two cylinders
heated by stem, or otherwise.
The fabric thus treated is finally allowed to dry in the open air.
Having now described the nature of the said invention, and in what manner the
same may be performed, I declare that I claim-
1. The heroin described process for waterproofing fabrics, leather, skins, cork and
other materials, as set forth.
2. The waterproofing material, prepared as herein specified, with the ingredients
described, and in or about the proportions mentioned, whereby the said process of
waterproofing is effected.
In witness whereof I the said Ernest de Pass have hereunto set my hand and
seal this First day of May in the year 1884.
TAIZHAM