An Improved Method for Preventing the Condensation of Moisture on Show and other Windows.
Year: 1898

page_text: Date of
Hcation, 7th Feb.,
4000
Complete Specification Left, 6th June, 1898-Accepted, 20th Aug.,
1898
Complete Specification Left, 6th June, 1898-Accepted, 20th Aug., 1898
An Improved Method for Preventing the Condensation of Moisture
on Show and other Windows.
I, EMIL FERDINAND GUSTAV PEIN, Electro-Technician, at Hamburg, Neustaedter
Neustrasse 68A, in Germany, do hereby declare the Dature of this invention to be
as follows:-
Show-owners will during the cold season often feel it to be a great nuisance
to get their large windows blurred by moisture which occasionally will even
freeze thereon.
A condensation of moisture on windows is certainly unavoidable as long as the
persons inside the rooms will develop steam and the temperature without is
lower than the temperature within; but its effect can to a certain degree and
for a certain time be neutralized and the means for realizing this effect is the
subject matter of the present invention.
Besides the principal object of this invention three other objects had to be
simultaneously obtained, viz.:
1st The matter employed ought to be transparent; 2d it ought to remain
efficacious for a longer period for which purpose non-drying oils were appropriate
and 3d the matter employed was to remain invisible to the eye, which is obtained
in the manner hereinafter described.
The invention is carried out as follows:
A high-pressure electric current passes through a vessel filled with peroxyde
of hydrogen and fitted with two copper electrodes jutting out within, thus effecting
a decomposition of the peroxyde of hydrogen and at the same time at one of the
electrodes a formation of oxyde of copper. The quantitative separation of the
components of the peroxyde of oxygen and hydrogen, need not be attended- to
as for the actual purpose only oxyde of copper is to be obtained. The liquid will
gradually diminish leaving finally a greyish-green liquid of the consistency of
oil, on obtaining which the electrolysis is suspended.
18
The product thus obtained thereupon mixed with glycerine, this
mixture being a very intimate one, glycerine as it is well known dissolving many
bodies and chiefly oxydes of metals. Now as the oxyde of copper is already
extant in solution an exceedingly uniform distribution of the same will ensue.
To this mixture a proper quantity of sesame oil is added to prevent drying and
finally paraffine to give it a greater consistency, whereupon chloride of calcium is
dissolved therein.
On covering a window-pane with a thin layer of the above preparation, the
chloride of calcium will be distributed on the glass in its very finest particles, it
being entirely dissolved by the glycerine and oxyde of copper liquid, and will
absorb the steam coming in contact with it thus preventing it from condensing
and obscuring the transparency of the glass. Glycerine contained in the pre-
paration prevents the moisture accumilated on the glass from freezing..

page_text: By the addition of small quantities of odoriferous etheral oil any disagreeable
smell of the preparation will be neutralized.
By the addition of aniline-black the inventor changes the greenish hue of the
mixture and its disagreeable effect on the beholder. A pane of glass covered
with an exceedingly thin layer of this blackened preparation will scarcely lose
anything of its perfect transparency.
As soon as the layer of the above preparation be saturated with water, this
being the case every two or three weeks, the pane of glass is covered with a new
layer.
An Improved Method for Preventing the Condensation of Moisture
on Show and other Windows.
EMIL FERDINAND GUSTAV PEIN, Electro-Technician, Hamburg, Neustadter
Neustrasse 68A, Germany, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
Show-owners will during the cold season often feel it to be a great nuisance
to get their large windows blurred by moisture which occasionally will even
freeze thereon.
A condensation of moisture on windows is certainly unavoidable as long as the
persons inside the rooms will develop steam and the temperature without is
lower than the temperature, within; but its effect can to a certain degree and
for a certain time be neutralized and the means for realizing this effect is the
subject matter of the present invention.
Besides the principal object of this invention three other objects had to be
simultaneously obtained, viz.:
1st the matter employed ought to be transparent, 2d it ought to remain
efficacious for a longer period for which purpose non-drying oils were appropriate
and 3d the matter employed was to remain invisible to the eye, which is obtained
in the manner hereinafter described..
The invention is carried out as follows:
A high-pressure electric current passes through a vessel filled with peroxyde
of hydrogen and fitted with two copper electrodes jutting out within, thus effecting
a decomposition of the peroxyde of hydrogen and at the same time at one of the
electrodes a formation of oxyde of copper. The quantitative separation of the
components of the peroxyde of oxygen and hydrogen, need not be attended to,
as for the actual purpose only oxyde of copper is to be obtained. The liquid will
gradually diminish leaving finally a greyish green liquid of the consistency of
oil, on obtaining which the electrolysis is suspended.
very
5 parts by weight of the product thus obtained is thereupon mixed
with 95 parts by weight of glycerine, this mixture being a
intimate one, glycerine as it is well known dissolved many bodies and
chiefly oxydes of metals. Now as the oxyde of copper is already
extant in solution an exceedingly uniform distribution of the same will ensue.
To this mixture a proper quantity of sesame oil is added, 18 parts of weight,

page_text: to prevent drying and finally 1 part by weight of paraffine to give it a greater
consistency; whereupon 2 parts of weight of chloride of calcium are dissolved
therein.
On covering a window-pane with a thin layer of the above preparation, the
chloride of calcium will be distributed on the glass in its very finest particles, it
being entirely dissolved by the glycerine and oxyde of copper liquid, and will
absorb the steam coming in contact with it thus preventing it from condensing
and obscuring the transparency of the glass. Glycerine contained in the pre-
paration prevents the moisture accumilated on the glass from freezing.
By the addition of small quantities, 5 parts by weight, of odoriferous ethereal
oil, viz. oleumcajeputi any disagreeable smell of the preparation will be
neutralized.
By the addition of aniline-black, 2 parts of weight dissolved in 105 parts
of weight of alcohol the inventor changes the greenish hue of the
mixture and its disagreeable effect on the beholder. A pane of glass covered
with an exceedingly thin layer of this blackened preparation will scarcely lose
any of its perfect transparency.
As soon as the layer of the above preparation be saturated with water, this
being the case every two or three weeks, the pane of glass is covered with a new
layer.
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. A proceeding for the production of a means destined for neutralizing the
annoying effect of moisture on glass-panes, characterized by the use of a non-
drying oil for obtaining a longer efficiency, in combination with liquids dissolving
this oil, and a substance rendering the preparation more transparent, as well as
with chloride of calcium, this latter body causing the absorption of the steam
and neutralizing is annoying effect on glass-panes.
2. In a proceeding as above claimed for the production of a means for neutrali-
zing the annoying effects of condensation of moisture on glass-panes, the black-
dyeing of the preparation for rendering a layer thereof applied to a pane of glass
invisible to the eye.
Dated Hamburg 3rd of June 1898.