New-York tribune., 1870-11-05
who huys Of druggists danb that is worth but little
more than tirst-olass whitewash. .,..a,. .I ,. u

beds II would be hard to conceive The sleeper needs
only the same padding beneath as he has of cover
hair mattress this elastic cloth of steel will give
for $50 a more perfect, wholesome, and cleanly ar
rangement for the bed chamber than $50 outlay in
springs and hair. These mattresses OF woven wire
are made at Hartford, in establishment that turns
out from Is to 20 each day, and once introduced into
families, hospitals and hotels they will quite sup
plant all contrlvanccs of straw, or combinations Of
wooden and spiral springs . r
ENGINES,
An admirable design, which does not differ in
principle from many Others has been on exhibition;
but It's merit consists in close economy OF fuel and
saving of all the heat of the steam-bOx which IL
iacketed within the re-chamber of the boiler IL is
very compact in its bnd and rests with great firm
ness on the ground the engine being placed directly
over the boiler, which serves as it's pedestal Twel-
ty-fve pounds of coal will do the work that would
tire two stout horses ... ....... r. ..... d
The inventor whose success was infinitely described
two months ago in The TRIBUNE has his prepared
peat ON exhibition He can make "a q tun at from ~
tuns as he get out. The engines at the rear OF
the exhibition buildings have been driven for part
of the time with peat steam generator, and it is
found eopal to the best coal The economical bear
ings of this invention of incalculable import
ance. Most swaRps are peat beds, and they can be
made as valuable as the coal measures. Ruskin may
protest against the materiasm that measures civii-
zation by coal beds and steam power but logic is in
exorable-nO fuel, steam; no steam, no commerce;
commerce paralyzed, civilization grows oioonless
Discord on mus ollie
An darkness To e glory. .-.'
RAILWAY SIGNALS. -
An inventor residing III Oil City, Pa, has devised
an admirable system by which the ffange OF car
wheel touches trigger near the outer edge OF the
rail- and either breaks or completes the clTcul OF
battery. Signals are thus given by which the condi-
tion of switch can be known TO an engineer long
distance before he reaches it, by which the coming
each station before it, and at tunnels and draw
bridges. applied to all railroads, it would save
70 hot fha lnXg
Ors proper course would be to secure the action OF
Legislatures to reqsire such signal system on every
line asking charter. ..... .I ..
THE ELEVATED RAILwAY-ANoTHER PLAN.
working model of an elevated railway, which
offers another solution of the most important me-
ehanica problem for New-York engineers-how 70
place Central Park within 15 minutes of City Hall
for 10000 daily passengers This invention proposes
elevated railroad, the track of which consists OF
a series of inclined planes suspended by cables; the
down the iDclnes by their own gravity, and
by elevatng platforms at the foot of every incline
they raised 10 the head of the next incline. The
elevating platforms are intended to be rked by
compressed air. which is to lift piston working in
vertical cylinders; and to the piston-rOd, the plat
forms, kept in place by guides, are attached. The
compressed air is furnished by means of stationary
engine airpumps and receivers, located at the end
of the route From the reservoirs four-inch pipe
is to all along the road, and by smaller pipes and
valves this is to connect with all the cylinders. Not
more than 50 pounds pressure of air the inch
required and that will give nearly 10000 pounds
of lifting force, much as any loaded car will call
ming down grade is made to wind chain ON
spring which is let off and starts the car briskly at
the top of the next slope.
ICE.
The most extraordinary feature of the Exhibition
has been the rink or skatingpool, of water frozen
into stiff block with ammonia, while the mercury
ammonia are placed in strong iron vessel about as
large as two sugar hogsheads, one on the other
Within this vessel is eJil of iron or lead tube
which can be filed with hot steam. The heat drives
off the ammonia, a gaseous alkali, from the water
and it goes through tube into another coil where
cool water runs as in the STILL The cooling Of
the ammonia while compressed does not at once make
liquid of it, but if the compression Is partly taken
off and the expansion takes place through long coil
of iron tube the change from gas to liquid throws
out wonderful amount of cold, OF, TO speak exactly
the expansion drinks up wonderful quantity of heat
At the point where the gas is allowed TO expand
through the coil the coldness of the tnbe becomes
like q wedge ak on the severest Winter night.
The coil is surrounded with BRINE winch 1 Is made made
from 1Oo TO 14o that is it becomes liquid 20 below
the freezing point. Cans or cases holding - pounds
of water are immersed in this freezing brine, and
they become blocks of ice. With the machine at the
Fair a block of rs pounds can he Withdrawn from
the brine every five minutes, 800 pounds III an hour,
two tuns in day of IA hours. This is done with an
outlay of little GOO pounds of coal, the rate
being one tun of coal 10 twelve of ice. The other
expenses are the hire of two men, one to tend the
engine and the other TO deliver the ice. Thus at
about $40 a day, including interest on cost OF
machine, coal, and hire of wOrkmen, 1000
pounds of ice can be made in Cuba III
New Orleans OF through our dOg-days.
-Four pounds for a cent p cents hundred are
figures that break the ice monopoly of this or any
city, This does not pclude the cost of delivery, but
p cents per hundred Is liberal allowance f0l that
so that ice at 80 cents n hundred would bring
the producer mOIe than fair and reasonable profit.
1t may be remarked that if the business were under
taken large scale one boiler w0nld make steam
enough for heating many hundred gallons OF aqua
ammonia, and for pumping the water and returning
the ammonia from the receiver below the coils to tho
rstort for pecuarity of the method is that but
little condensing power Is used and there Is no waste
of ammonia, il is expanded from liquid to gas.
x,I 10. H,.tl tot ax"np and
without loss III bulk strength. In all
cities south of Phil ladelpha this inyen-
tion is of great. significance, and it is
of much importance in the arts everywhere as
method of producing cold for brewers, butchers,
dealers in butter and choice fruits, which require
temperature low 402. Ii has also important
architectural bearings suppose, for instance, Mr.
Stewart had great tank of brine atihe tempera;
ture of l0O Ill s basement. II would be easy Ia cool
air to temperature of 30 with 1t and to force this
refreshing current through his palace, where he
could keep the mercury at 10 while men were fall
ing outside with snnsioke In all buildings warmed
might fill the coils with very cold salt water through
Midsummer.
A lady of this city has invented packing material
that renders oil unnecessary in subdumg friction
II consists of felt that has been treated with chem
reals and had fine plumbago thoroughly incorporated
with it. In use upon bearings 1t takes on high pol
ish, and the friction IS very small much less than
upon the best oiled surface and as the telling Is very
tough, 1t Lasts long time. ExpeflnentS are IN pro
gress to determine how it may be applied to car
wheels where the excessive ulctlOn Is the cnlel u-
culty to be overcome III running lightning trains
Heated journals are common when speed Of over
30 miles an hour is held for "a considerable distance.
GREAT IMPROVEMENT IN TELEGRAPHY. -
The running cost of telegraph apparatus is mainly
in the renewal of zinc and other substances con-
sumed by acid TO create galyanic current. Elec-
tricians have long known that if they could rest
battery and then use it, the consumption of metal
would be much slower. and the pile would remain
effective very much longer. An inventor III Plain
field, n j., has at length mastered this problem He
connects two batteries by delicate alternating ap-
paratus that is worked by the balance-whee of u