IMPROVE- MENTS IN WATERPROOFING TEXTILE MATERIALS
Year: 1879

page_text: LETTERS PATENT to Francis Goldberger de Buda, of 40, Upper Baker Street,
Regent's Park, in the County of Middlesex, for the Invention of "IMPROVE-
MENTS IN WATERPROOFING TEXTILE MATERIALS." A communication from
abroad by Messrs. Sam F. Goldberger & Söhne, of Vienna and Budapest, in
the Empire Kingdom of Austro-Hungary.
PROVISIONAL SPECIFICATION left by the said Francis Goldberger de Buda
at the Office of the Commissioners of Patents on the 30th December 1879.
FRANCIS GOLDBERGER DE BUDA, of 40, Upper Baker Street, Regent's Park,
in the County of Middlesex. "IMPROVEMENTS IN WATERPROOFING TEXTILE
MATERIALS." A communication from abroad by Messrs. Sam F. Goldberger &
Söhne, of Vienna and Budapest, in the Empire Kingdom of Austro-Hungary.
This Invention relates to certain improvements in waterproofing textile materials
and in the means therefor, the object being whilst rendering the stuff waterproof
that the quality of transpiration or allowing of the comparatively free passage of
air is retained.
In carrying out the Invention the stuffs or material to be treated are boiled in a
bath of the constituents hereinafter specified, whereby the chemical ingredients of
the liquid combine with the fibres, so that after it has been dried it will be
sufficiently waterproof to withstand the wet, whilst allowing of the permeation of
the air.
The constituents of the bath are substantially as follows:-190 parts (deca-
gramme 6.43 dwts.) by weight lead oxide acid, 3 (PIO C, H, O) dissolved in
luke warm water in an earthenware or wooden vessel, 13 parts (decagrammes) by
weight glue (C H., N, O,) of well dried quality, which is first steeped in cold
water for several hours until it swells up, when it is to be cooked by boiling in the
usual way for melting glue, and poured into the solution of the lead oxide and
well stirred together; 180 parts (decagrammes) of alum (Al, O, 3 SO, KO SO,)
is then dissolved in boiling water, which is poured into the above specified mixture,
which is to be stirred together, and then left to stand and clear. The sediment

page_text: thus obtained is sulphuric lead oxide. The clear liquid is then mixed with about
20 gallons of water, wherein 1 part (decagramme) of double chromide of kali
(2 CrO, KO) has been previously dissolved, and the liquid so obtained forms
the bath for the waterproofing process.
The stuffs that are to be made waterproof are to be put into the bath at a 5
temperature of 60° centigrade, and thoroughly moved about therein, whilst it is
heated up to from 75° to 80° for three quarters of an hour, and then left for 10, 12,
or 14 hours without increasing the temperature.
The stuffs are then to be taken out, hung up, and allowed to drain out, and
finally left to dry at a moderate temperature. The stuffs so prepared and well
dried will be waterproof, fit for houshold uses, and will wash both in cold and
warm water.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Francis Goldberger de Buda in the Great Seal Patent Office on the
29th June 1880.
FRANCIS GOLDBERGER DE BUDA, of 40, Upper Baker Street, Regent's Park,
in the County of Middlesex. "IMPROVEMENTS IN WATERPROOFING TEXTILE
MATERIALS." A communication from abroad by Messrs. Sam F. Goldberger &
Söhne, of Vienna and Budapest, in the Empire Kingdom of Austro-Hungary.
This Invention relates to certain improvements in waterproofing textile materials
and in the means therefor, the object being whilst rendering the stuff waterproof
that the quality of transpiration or allowing of the comparatively free passage of
air is retained.
In carrying out the Invention the stuffs or material to be treated are boiled in a
bath of the constituents hereinafter specified, whereby the chemical ingredients of
the liquid combine with the fibres, so that after it has been dried it will be
sufficiently waterproof to withstand the wet, whilst allowing of the permeation of
the air.
The constituents of the bath are substantially as regards the proportions as
follows:-100 parts (decagramme=643 dwts.) by weight lead oxide acid,
3 (PIO C, H, O) dissolved in luke warm water in an earthenware or wooden
vessel, 13 parts (decagrammes) by weight of glue (C₁, H₂, N, O₂) of well dried
quality, which is first steeped in cold water for several hours until it swells up,
when it is to be cooked by boiling in the usual way for melting glue, and poured
into the solution of the lead oxide and well stirred together, 180 parts (deca-
grammes) of alum (Al, O, 3 SO, KO SO₂) is then dissolved in boiling water,
which is poured into the above specified mixture, which is to be stirred together,
and then left to stand and clear. The sediment thus obtained is sulphuric lead
oxide. The clear liquid is then mixed with about 20 gallons of water, wherein 1
part (decagramme) of double chromide of kali (2 CrO, KO.) has been previously
dissolved, and the liquid so obtained forms the bath for the waterproofing process.
The stuffs that are to be made waterproof are to be put into the bath at a
temperature of 60° centigrade and thoroughly moved about therein, whilst it is
heated up to from 75° to 80° for three quarters of an hour, and then left for 10, 12,
or 14 hours without increasing the temperature.
The stuffs are then to be taken out, hung up, and allowed to drain out, and
finally left to dry at a moderate temperature. The stuffs so prepared and well
dried will be waterproof, fit for household uses, and will wash both in cold and
warm water.
Having now described the nature and particulars of the said Invention, I
claim,
The improvements in waterproofing textilo materials, as and for the purpose
herein set forth.
In witness whereof, I, the said Francis Goldberger de Buda, have hereunto
set my hand and seal, this Twenty fourth day of June, in the year of our
Lord One thousand eight hundred and eighty.
31 SKA
FRANCIS GOLDBERGER DE BUDA. (LS.)