Dodgeville chronicle. [volume] (Dodgeville, Wis.) 1862-current, 1875-07-30
INDUSTRIAL.

THE Rochester Eapress predicts good
canal business in the fall, and says bust
ness on the canals is reviving.
THE Lowell (Mass.) Times says that the
manufacturing prospects of the city are
not so discouraging as in other places.
Nearly every mill is running, perhaps not
to its fullest capacity, but still nearly up
to the usual standard.
A WRITER in the English Mechanic
states that he has found the following COM
position completely successful for cement
ing iron railing tops, iron gratings to
with such effect as to resist the blows OF a
sledge hammer, namely Equal parts of
sulphur and white lead, with about sixth
of borax, these being thoroughly incor-
porated together so as to form one homo
geneous mass. In applying this substance
to either Of the purposes named it is
moistened with strong sulphuric acid, and
a thin layer of it placed between the two
pieces of iron, and these are then firmly
pressed together to form a perfect union.
In the brief period of about five days it
becomes perfectly dry, all traces of the
cementing compound having vanished
and the iron exhibits the appearance SIM
ply of having been welded together.
ANOTHER method of utilizing waste
leather Danish invention, has been
brought forward, and is said to give better
results than any of the usual processes.
The plan in question is simply to first
convert the leather scraps, in suitable
machine, into sort Of leather wool; this
is mixed with caoutchouc and different
chemical reagents, kneaded by machinery
into thick, pasty mass, and then formed
in metal mOlds and dried, and subjected
to a gradually-increasing pressure, until
it is finished under 5000 to 10000 pounds
to the square inch; the appearance OF
leather is impaired to it by light coat
ing. Articles manufactured from this ma.
terial are said to be some so per cent.
cheaper than those made from leather, and
can be produced in the same form and va
riety. The substance consists of caOut-
chouc and leather, in the proportion OF
about 40 per cent. of the former to 90 pei
cent of the latter, and one of its chief adj
vantages over all similar articles is said to
be its perfectly waterproof quality
| Y. Sun.
A FORM of stove, designed to warm one
or two rooms, supplying them with fresh
| but heated air by one and the same fire,
venting draughts-purposes long striven
| for in various ways-is described in for
eign journal. The draught from the open
| fire, instead of flowing upward and into
| the chimney, flows downward toward the
| feet and into an iron box behind the fire
and from thence through sheet-iron pipes
into the chimney 1t is claimed that by
this means not only is a better open fire
| obtained Int stream of fresh air is DaSsed
over the pipes in the air chamber and LED
into the room or into the chamber above
thus securing more than double the
warmth, it is estimated, of an ordinary
fire, but capable of regulation at pleasure
If the ash pan is drawn little outward
the downward draught ceases, and the
stove then acts like those of ordinary con
struction. AS regards ventilation, by sup
plying room literally with fresh warm
air the foul air from the combustion o.
gas, ETC., and from long exhalations i:
brought below the breathing level an6
! swept into the fire.