New-York tribune., 1905-07-09


the bestznbrous wool felt saturated with Trinidad
ground slate and mica, as Aiiq reproong the third
Is or saturated wool felt coated with crushed fell
with an asbestos surface: the nth IS surfaced
w,1n cork and the sixth I is composed Of two al
prated roofing felt Zone Of the latter serving as a
These several brands differ little in price. and
the first cost OF either is less than that Of slate
mon use whether areproof or not, while the ex-
Rense OF installation is also considerably smaller
a9d 5s is Is as n quickly and easily done
which period the cost Of maintenance has proven
a neglgiole quantity. tin roof requires constant
and in case Of IRE the solder meits under the i'm
pact Of heat. or from burning brands and the roof
is no longer protection TO the building Shingles,
of course, are not hreproof. and worse STILL they
stun from which thew used 10 he cut has grown so
scarce 1t is now all used for interior trim. Hard
from soft trees slpplngs limbs. etc. which warp
structure they are intended @ to protect
out and crvstl @ sIols tu d Ie na ro os
fdoniestic) ASPHALT roofings do, and that they
they are ireproof was demonstrated b1 the ex-
perience of the Belmar Manufacturing Company, at
for manufacturing hardwood speciaities burn to the
ground; without affecting the Stowelf roofing OF
the. fire
The stoweH rooings would seem to meet all re-
mentatton and light weight and as protection from
heat and cold rs well as from wind and rain in ad-
diton to their possessing the immune qualities be-
fore ascribed to them 1t is this combination of
used by such concerns as the Fore River Ship and
NeJerseT an noT Mas II oqng fbe sns1d sne or
Company; the Boston and Maine Railroad; the
50 per cent of the chemical works of the country
and on thousands Of ornamental cottages in metro
orally. They are extensively used. also. over old
roofs, since their application does not require re
costly meth6d of replacing them
THE MATTER OF sKYLIGHTs
The Iroquoi5 Theatre fire. with its appalling de-
struction OF human life. perhaps first called public
attention to feature of construction which has
the skyIight William KelIam. the expert theatre
curtain hanger suggests the cause of the failure to
IAs most skylights admit snow and rain which
ruin scenery. they frequently put out of COM
mission in the endeavors to make them water
tight by packing"
W. F. Plass NJ. e and c. E. says:
"Exhaustive Investigation. by experts has demon demon
rapid deterioration breakags OF the glass corrod-
ing of the iron and the dropping OF from
expansion and contraction OF glass and iron is such
that the glass IS bound to crack and loosen putty
and arrangement for this movement OF metal and
ference Of temperature within and without the
building in winter, causes moisture TO drip off both
these. in direct connection, watertight Many
cumbersome devices have been employed to correct
these evils, but they have proved abOrttve."
SKYLIGHT PROBLEM SOLVED.
The American Machinery Company Q7 Battery
Place. which he represents, makes a skylight
which triuTnphantly surrnounts what have hitherto
seemed insuperable mechanical difficulties. It IS
German invention. though owned by the American
company, and is covered by letters patent every
where. It is appropriately called "Anti-Pluvius "
In the four years IL has been in use over three
million feet OF these skylights have been installed
the biggest piece of work being the entire roof OF
the Union Railway station in Hamburg, Germany,
the largest in the world.
The various parts entering into the construction
can. therefore, be taken apart and put together
very readily by any ordinary mechanic. The i'm
portant fsarureS OF the Anti-PluvtuS skylight are
that 1t affords and perfect resting surface
fer the glass, which is held in place by a firm but
elastic pressure that allows for expansion con-
glance at the illustration above will at show
that any water percolating under the sheetng
.'F and through the strips of felt I'd must drop
into the C-channeI a which natural
gutter carry such percolatiOn to the outside.
The glass is raised about Il inch above the upper
this is freely exposed to the air and atmos-
phere prevailing in the enclosure under the sky
light The TJ-channel is, therefore. not subjected
to condensation, while in all other existing Sys-
TENS the iron supporting bar has the temperature
OF the air outside. that in winter heavy con-
advantage of raising glass above the C-channel
is 70 convey the condensation, which forms the
lower side OF the glass in cold weather, into the
U-channel, and thus carry II away without other
special gutter or arrangement. The bridge ~. a
new feature. rests on a shoulder Of the upright