IMPROVEMENTS IN MEANS TO BE EMPLOYED FOR PREVENTING THE DEPOSIT OF NAPHTHALINE IN GAS APPARATUS, MAINS, AND FITTINGS
Year: 1877

page_text: LETTERS PATENT to Lucien Brémond, Engineer of the Gas Works, Versailles,
France, for the Invention of "IMPROVEMENTS IN MEANS TO BE EMPLOYED FOR
PREVENTING THE DEPOSIT OF NAPHTHALINE IN GAS APPARATUS, MAINS, AND
FITTINGS."
Sealed the 8th September 1877, and dated the 13th March 1877.
PROVISIONAL SPECIFICATION left by the said Lucien Bremond at the Office
of the Commissioners of Patents on the 13th March 1877.
LUCIEN BRÉMOND, Engineer of the Gas Works, Versailles, France.
" 'IMPROVE-
MENTS IN MEANS TO BE EMPLOYED FOR PREVENTING THE DEPOSIT OF NAPHTHALINE
IN GAS APPARATUS, MAINS, AND FITTINGS."
This Invention has for its object, as the title imports, improvements in the
process or means to be employed in the manufacture of gas, or to the gas subsequent
to its ordinary manufacture and purification, whereby the deposit of naphthaline is
prevented from taking place either in the gas apparatus on the gas works, in the
mains, services, or public light or consumers' fittings.
The Invention is based upon the assumption that dry gas, or gas from which the
vapour of water has been wholly or in great part removed, will not deposit its
naphthaline while in a dry or nearly dry state.
The Invention consists therefore in drying the gas after it has left the washers or
scrubbers by passing it through a vessel or vessels of any convenient form containing
a substance or liquid which absorbs moisture with avidity, such as chloride of
calcium, quicklime, baryta, caustic potash, caustic soda, sulphuric acid, phosphoric
acid, or other substances or liquids having an affinity for water. By this means the
gas is dried, but as most of the vessels through which the gas has subsequently to
pass are supplied with water, and as the gas would in passing through come in
contact with and absorb water from these vessels, it is proposed that to the water
with which they are charged a convenient quantity of oil of nearly the same, but
rather lighter density than water should be added, so that the gas in its passage
through these vessels should be protected from coming into contact with water.
In other words, that the cups of purifiers, station meter tanks, gas holder tanks,

page_text: station governor tanks, and in fact any other vessel ordinarily containing water, and
through which the gas has to pass should be supplied with oil as well as water in
order to prevent the water from vapourizing and becoming incorporated with
the gas.
It is also proposed that after the gas has passed through the station governor and
before it enters the mains, it (the gas) should again be passed through a vessel or
vessels containing one of the dessicating materials before alluded to, in order to dry
or deprive the gas of the vapour of water to the utmost.
Further, it is desirable that all syphons attached to the mains should be supplied
with oil to prevent the gas from absorbing moisture from the liquid frequently
contained therein,
•
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Lucien Bremond in the Great Seal Patent Office on the 10th September
1877.
"IMPROVE-
MENTS IN MEANS TO BE EMPLOYED FOR PREVENTING THE DEPOSIT OF NAPHTHALINE
IN GAS APPARATUS, MAINS, AND FITTINGS."
LUCIEN BRÉMOND, Engineer of the Gas Works, Versailles, France.
This Invention has for its object, as the title imports, improvements in the
process or means to be employed in the manufacture of gas, or to the gas subsequent
to its ordinary manufacture and purification, whereby the deposit of naphthaline is
prevented from taking place either in the gas apparatus on the gas works, in the
mains, services, or public light or consumers' fittings.
The Invention is based upon the assumption that dry gas, or gas from which the
vapour of water has been wholly or in great part removed, will not deposit its
naphthaline while in a dry or nearly dry state.
The Invention consists therefore in drying the gas after it has left the washers or
scrubbers by passing it through a vessel or vessels of any convenient form containing
a substance or liquid which absorbs moisture with avidity, such as chloride of
calcium, quicklime, baryta, caustic potash, caustic soda, sulphuric acid, phosphoric
acid, or other substances or liquids having an affinity for water. By this means the
gas is dried, but as most of the vessels through which the gas has subsequently to
pass are supplied with water, and as the gas would in passing through cone in
contact with and absorb water from these vessels, it is proposed that to the water
with which they are charged a convenient quantity of oil of nearly the same but
rather lighter density than water should be added, so that the gas in its passage
through these vessels should be protected from coming into contact with water.
In other words, that the cups of purifiers, station meter tanks, gas holder tanks,
station governor tanks, and in fact any other vessel ordinarily containing water, and
through which the gas has to pass should be supplied with oil as well as water in
order to prevent the water from vapourizing and becoming incorporated with
the gas.
It is also proposed that after the gas has passed through the station governor and
before it enters the mains, it (the gas) should again be passed through a vessel or
vessels containing one of the dessicating materials before alluded to, in order to dry
or deprive the gas of the vapour of water to the utmost.
Further, it is desirable that all syphons attached to the mains should be supplied
with oil to prevent the gas from absorbing moisture from the liquid frequently
contained therein.
As an additional safeguard to prevent the deposition of naphthaline in the
fittings of consumers a box charged with quicklime or other before-named inaterial
may be connected to the outlet of the meter, and between it and the pipe leading to
the fittings and burners. The material may be renewed from time to time, or
whenever necessity dictates.

page_text: Having now described and particularly set forth the nature of this Invention, and
the manner in which the same is or may be used or carried into effect, I would
observe in conclusion that I no not confine or restrict myself to the precise details
or arrangements which I have described or referred to, as variations may be made
therefrom without deviating from the principles or main features of this Invention,
but what I consider to be novel and original, and therefore claim as the Invention
secured to me by the herein-before in part recited Letters Patent is, the prevention
of the deposit of naphthaline by the removal of moisture from illuminating gas by
the use of materials before mentioned, and applied as herein-before described.
In witness whereof, I, the said Lucien Brémond, have hereunto set my hand
and seal, this Eighth day of September, in the year of our Lord One thousand
eight hundred and seventy-seven.
LUCIEN BRÉMOND. (L.S.)