A NEW FILLING FOR GAS METERS
Year: 1877

page_text: LETTERS PATENT to Frank Wirth, of the Firm of Wirth & Company, Patent
Agency, of Frankfort-on-the-Maine, in the Empire of Germany, for the In-
vention of "A NEW FILLING FOR GAS METERS." A communication from
Ferdinand Brünjes and Hermann Jacobsohn, persons residing at Leopoldshall,
near Stassfurt, in the Empire of Germany.
Sealed the 21st August 1877, and dated the 2nd March 1877.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office
of the Commissioners of Patents on the 2nd March 1877.
FRANK WIRTH, of the Firm of Wirth & Company, Patent Agency, of Frankfort-
on-the-Maine, in the Empire of Germany. "A NEW FILLING FOR GAS METERS."
A communication from Ferdinand Brünjes and Hermann Jacobsohn, persons residing
at Leopoldshall, near Stassfurt, in the Empire of Germany.
It is well known that frost detrimentally affects the working of wet gas meters,
as the water used in such meters becomes frozen, and thus the working of the
whole mechanism is arrested. Thawing of such frozen water is dangerous, also
fresh freezing is not prevented.
It is known that glycerine has been used as a non-freezing filling for gas meters,
but it is too expensive for general use.
By this present Invention there has been found a novel non-freezing filling which
does not freeze with the greatest degree of cold. It does not injure the meter and
does not decompose the gas passing through the meter. This filling is twenty-five
times cheaper than glycerine.
The filling to which this Invention relates consists of a solution of chloride of
magnesium (Mg. C₁₂) in water. This solution may be of any strength; however,
for moderate climates, a solution of fourteen parts of chloride of magnesium to
eighty-six parts of water will suffice; but for the coldest climates a solution of thirty
parts of chloride of magnesium to seventy of water will be found sufficient.
In lieu of the chloride of magnesium, chloride of calcium (Ca. Cl.) may be em-
ployed. This latter may be used in the same proportions dissolved in water as the
chloride of magnesium, and has the same non-freezing qualities.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frank Wirth in the Great Seal Patent Office on the 29th August
1877.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Agency, of Frankfort-
on-the-Maine, in the Empire of Germany. "A NEW FILLING FOR GAS METERS."
A communication from Ferdinand Brünjes and Hermann Jacobsohn, persons residing
at Leopoldshall, near Stassfurt, in the Empire of Germany.
It is well known that frost detrimentally affects the working of wet gas meters,
as the water used in such meters becomes frozen, and thus the working of the
whole mechanism is arrested. Thawing of such frozen water is dangerous, also
fresh freezing is not prevented.
It is known that glycerine has been used as a non-freezing filling for gas meters,
but it is too expensive for general use.
By this present Invention there has been found a novel non-freezing filling which
does not freeze with the greatest degree of cold. It does not injure the meter and
does not decompose the gas passing through the meter. This filling is twenty-five
times cheaper than glycerine.
The filling to which this Invention relates consists of a solution of chloride of
magnesium (Mg. Cl₂) in water. This solution may be of any strength; however,
for moderate climates, a solution of fourteen parts of chloride of magnesium to 86
parts of water will suffice; but for the coldest climates a solution of 30 parts of
chloride of magnesium to 70 of water will be found sufficient.
In lieu of the chloride of magnesium, chloride of calcium (Ca. Cl.) may be em-
ployed. This latter may be used in the same proportions dissolved in water as the
chloride of magnesium and has the same non-freezing qualities.
What I claim as the Invention secured to me by the herein-before in part recited
Letters Patent is,-
First. As a filling for gas meters and other like apparatus a solution of chloride
of magnesium and water in or about in the proportions set forth.
Second. As a filling for gas meters a solution of chloride of calcium and water,
in or about in the proportions set forth.
In witness whercof, I, the said Frank Wirth, have hereunto set my hand
and seal, this Twenty-third day of August, in the year of our Lord One
thousand eight hundred and seventy-seven.
T
FRANK WIRTH.
(L.S.)