New-York tribune., 1906-07-22

tensiileG pressure systems are uss4 -.
terms are 0f the large faFiug type A. a. z,
clusters Of from four to six IrarsIs 80 We
tncloSed the lantern measures S~0r, a. - n
inches in diameter. In these large I4r,rs % /
used under compression and yielfs ~ ~ ga |
candle power a foot This cOuiprassto- -''a'
tens.ned pressure. Is obtained in many - =.
BY hydraulic pumps operated n the 1ol,e
Some beautiful exhibitions o. ts,z ,,.
system OF gas lighting may be Gee1 a. -.
Square and at various crossings aIo-y - ia RI
and Cheapside. In the London fOs f;eesa s''sos so
have a much better carrying quality faar S
electric arc lights.
In London there are some 7s.sI5 s.-sA,
equipped with incandescent gas brz-74-, ~
the increase iu illumination over frz -
fame system IS even more marked tfa-1 4, 4. 4
In New York for the reason that The .@o-ss.ls 80 =
Is Of only IA or Is candle power efEcIz1S-,Tr' =
Of the largest Of the metropolitan cs-,,,. -,
being required 20 furnish only ~ csnsI -. -.
gas. CPhe present requirement IN New No., - ~
Is 22 candle power gas)
The yield in illumination from th= o't x
fat flame burner on these 74S15 IaT--s 80 e- :
mated some 2S9S 10000 candles T'a- 80 ~
The present yield IS something like 1915l5 sGfs
candles, or over six times as much Hgs. =
excess OF illumination over the old re-sos /
rs 2S2 10000 candles.
Some idea OF the quantity OF the f7s,s..
light yielded may be had by pictUring s-a,ss
candles 50 placed that each win iIlUr-irats :
sOuare foot over an area OF 5s4 s1rarA ~
or 373. .760 acres. or say sixteen tOWusa.os a..
six miles square
In the United Kingdom there are 7l2 q-~l =.
lie lamps and OF these 361.I5S are Of tie i7Ss,
descent mantle type.
The balance Of the lamps. 3S5 227. Vbs,. :
Of the fat fame type. do not yield as
|, light in the aggregate in a year as To-s.
gained in year In changing her 79S1i a..
70 the new system
In some OF the continental cities. P--l- =
instance, the fiat fame burner has bsoor. +,
most obsolete
So general has the use Of mantle Har-,,
come in Berlin for both indoor and straa,' T ;,
ing that il is said TO require 10000 u-ar-,4s =
month to maintain the incandescer. a..
burning under ordinary pressure. A soA
mantle Is required for the intensified o-esz~~
lamps. Many Of the mantles are sOIE = =,
consumer in European cities in the a-x'5s !.
stocking" form. and are burned OF az t,s r..
OF adjusting them to the burner on wr1e5 -
are 20 be used.
The city Of Edinburgh has under adviss-s
the eQuiDping Of some seven thousand Isrcs -.
iucandescent burners for street illuminate =
is one OF the few cases where IL is coure7--rs.s
increasing the consumption Of gas per h--
adopting the new method. Many OF the -
ciently bright with an hourly consumnsI--
two feet a lamp through a fiat fame F.-
yielding about nine candles
About three thousand are already ervi--.
with tncandescent mantle burners Trls 4
candescent mantle system OF lighting Is a. ?
best at pressure appToximating two ir--
OF water In Edinburgh. in places. the ursss~
runs as high as four and One-half inches a. h
street lamps. There is no restriction rIsa
upon the maximum pressure az which gas -
be delivered in the United Kingdom.-Gas Irg'