New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1897-01-30
rt1r GRE AFTER NETWORK INDUSTRIAL SUPPLEMENI.

New York, the most effective-tne onry ~ ~,
efectiye-method Of insulating by Inea.s ,t ito
terror condutS was concei'eu "'
successful operation. -, . aozen wears
This city has now for some nan . onternrise
been the headquarters OF erea. Lnown tc
which has patented the best ~ s.e" ,,ros WITH
,ha world ~ Insulating electric lignt Wis "
IN Interiors The National boaru % ha,, no in
derwriters requires that such wires ~ endan-
suIa,ed beyond the possibility OF tneLi ,oood
osring tho structures I'm which they are pa 49,,
This Board upon the recomnehua.I,,,o has
Underwriters National Electric Assoes; rau
Endorsed the New-York concep'i 10 house in
Iatton When the Illumination OF me- ord
teriors was a newer idea than u nv nossi-
experience Of It's practical WORKINGS an i,npjted
BILE attendant dangers was ioS,,Iation OF the
the idea prevailed that simple lhsu'a.'o' -
wires alone would best insure saiesy Ito, Inv.
New-York genius must be cleuiI 'na ,rsnlation
ing been first TO realize that ".tdaration II
,rioht bs given q subordinate considei a'ioi.
tho wires were placed In q perfectly .S,,
conduit In the case OF a single Wme ot,on ~
ing q single duct. Il was seen tha' iior,taJ a.
the duct or conduit alone was eS90t - -,
wlre. reallv needed insulation only "nct D
eral OF them ran through the same uur. ~
the latter case the object or lhsuia.'I,i 90 lid
nrotect the wires from each other, as .hey oou.N
pr 10 a source of outside danger II the con-
dult itself were insulated. .,. ,,hor 20
rho unqualified cuccess Of this theory, when re-
duced practice. was atterln ~. 20 centre Where
nractical IDEAS of tn, greatest value may oe eA-
pected to originate. A.. o,r,, al
Protection against fire was Hoe 'iNo III ii,s t.
vantage derived Insulating metal conuultS' -
80 baan found preserve wires from various "
iurous Influences to which they are oruIiiaiuS
exposed This is accounted for ny pui;r,'Ss ,n q
nical reasons, which necd not NC
general article. sorrod
The fundamental idea Of the system rels s ,.
70 "a that conduits may be maze part VI "a.
original construction OF pulluinsi oeaie das ~
In position on the same principe as sa I1od
water pipes The conduit Is metal pipe mr.
with an Insulating tubing. and Is eA.s .r,,oti
throughout the entire frame work Oh Wy 81 Ill,
ure before the flooring IS laid down or ,he "l.'o
plastered and even in advance or the ihasonis
work 1t IL thus invisible as well as permanent
The electric lighting wires can De Drawn ~ ~
and restored without any disturbance Vi 'i ~
surface finishing of the building II IS wen
known that formerly the placing OF "iIes IL
house interiors necessltated genera de i -
ment. The insulating tubing or the cohiul,S -
securely cemented TO their Interior ana olner-
wise SO consolidated with the metal work that
It forms practically a part or the latter;
In brick and terra Gotta partition walls. no"
so common in building construction. channels are
often cut in the walls to accommodate coilduits
The erection Of the system OF metal, pipenke
conduits, by preceding the masonry work, MINI
rizes the labor OF construction as well as the
expense There is no channel-cuttng TO be done
on the walls This conduit system possesses a
strength which prevents its being injured by the
operations Of the workmen engaged on the build
ing An additional feature of the Insulating
metal conduit is that it can be covered with
brass armor which gives extra protection
| ?
kalies to which metal may be liable when laid
beneath tiled floors. Brass sheathng IS also use
full when the conduit is located near external
sources OF heat
New-York supplies the whole country with tbs
invaluable method Of rendering electric iumna-
ton Of interiors perfectly safe. The base OF
supplies, the actual manufacture, the directing
genius OF the great industry, are all in New
York. Electric lighting IS rapidly displacing.
for all large and public structures. every other
method. 1t IS also in smaller, yet considerable
degree gradually being adopted for private resi-
dences It's present vogue Is great; its future
vogue will be greater. Consequently the notable
progress that has been made in inventions in
creasng the convenierces and facilities for and
| lessening the dangers of. electric lighting, is a
matter for general cOngratulatlon. The whole
public is interested in such developments, for
they intimately concern the safety of human
! life
Insulating metal conduts are now being man
ufactured in NeWYork by one firm, to the ex-
tent Of 100000 feet per month. They have
already been placed in 10000 buildings. Con-
slant exercise of thought and mechanical in
genuity have brought the invention as near per-