Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1917-01-16
WAYS TO ECONOMIZE vi lighting the Home ssRH0

1ASHINGTON Dec. 27.--A number of investiga-
w tions made by the United States bureau Of
w standards deal with household lighting prob
LENS The work of this bureau deals largely with the
application of scientific methods to practical ends and
its experts have several things to the ultimate
consumer which may show him how to save money In
his household budget
The matter of lighting is where a
little. knowledge points the way to small monthly
saving The whole item of the lighting Dill is as a
rule not a very large but it may just as well be
made small as possible
The choice of means of lighting is usually deter
mined by considerations of taste and convenience
rather than by that of light your house
with anything from candles to tungsten lamps ana
Won have probably light that gives the
least trouble without paying much attention to relative
expense. This is a sound enough proceeding In a
matter total is relatively so small but having
made your choice of lighting system 1t Is certainty
desirable to get the greatest efficiency for the least
possible money
If YOU use kerosene oil light home you have
an economical system. The average cost of kerosene
lamp light is about 90 cents per 1000 candle hours
There are number of Kerosene lamps available wich
use incandescent nantes instead of the naked flame
These lamps give four times as much Ght as
a kerosene lamp without mantle, but according 70
the bureau of standards, the construction OF such
ns is usually rather complicated and hence they do
not always prove satisfactory There is also the cost
of the mantle to be considered In deciding Wnether
or-not to use type of lamp it is necessary TO
balance these factors convenience and greater cost
Of apparatus against the greater efficiency of the mantle
Ia-go numbers Of city homes lighted by
In most cities quality of the is regulated by
law as the householder has little of judging
the lighting power of the gas Figuring on basis OF
the standard usually Set and typical price of 81 per
Thousand cubic gas, open-hame gas burner
will give you the rate of 25 cents per thousand
candle hours price % cent higher than That or
kerosene light 1t possible greatly to increase the
efficiency of gas light by the use Of gas mantles
THE efficiency gas mantle depends largely on
.h care Won take to keep good condition, such
mantes are fragile In fair condition, good
mantle will give you at the rate of 1000 candle
hours for cents making gas burned through a good
ante the most economical lighting system where the
nrice of gas too high This figure is calculated
On basis of 81 a thousand feet for If your local
rica is higher lower, the cost will of course vary
accordingly. In any event. the use of the mantle is
clearly an economy, when the cost Of the lamp
and the mantles is considered In a year good lamp
and globe will than pay for themselves and give
Won about three times much light besides.
Manv persons use a gas mantle where bright light
is required reading sewing but are content to
bu-r an omen flame where dim light is sufficient In
a case like this is advisable to install one of the
small mantle Such burners only cost 10 cents
for the fixture, IS cents apiece for the nantes
They give as much light the open flame and only
use one-quarter much gas. They give steadier
light. and there is less danger Of fire.
If vour house is lighted by electricity, there are
three main types of bulbs that you can buy to equip
our fixtures These the ordinary carbon bulb the
rnetalzed carbon and finally the tungsten tungsten
,or,p pives about three much light carbon
bS1h while using the amount of current The
oetalized carbon bulb gives from half to third more
light than ordinary carbon FORM The tungsten is
thus nv far the efficient and economical of the
three Where given quantity of light is desired the
tungsten lamp furnish it for third the cost in
current Whatever the system of measuring and charg-
ing for electricity, the bureau of standards maintains
that the tungsten lamp the cheapest to USE
where the company will replace broken carbon lamps
nd the has n w
+unqstens 1t is sometimes stated, and with
reason that the tungsten lamp is easily broken but
the more modern forms nearly fragile the
older ones The conclusion be drawn from all the
evidence is that it is by all advisable to
tungsten lamps.