Wessington Springs herald. (Wessington Springs, Aurora County, Dakota [S.D.]) 1883-1891, 1886-09-03
MECHANICAL.


TEE rapid development Of sugar eul-
ture in Queensland, Australia, suggests
the possibility that it may become
second Cuba.
For turning and drilling wrought
iron and steel, one ounce of a mixture
of soft-soap, with half it's weight of
pnarlash, in about one gallon of boiling
water. is in everyday use in most en-
gineering shops The work, though
constantly moist, does not rust.
IN cannon foundry at Bourges,
France, electricity has been success
fully applied to mechanical purposes
for more than five years, two large,
movable cranes, each weighing over
twenty tons, having been worked by
electric motors without difficulty.
IT has been found that compressed
teak may be made to serve some of the
purposes for which lockwood, which is
rapidly becoming scarce, is now being
used. A powerful hydraulic press COM
pressing teak for loom-shuttles has just
been made i'll Manchester, England.
4 SUPERIOR waterproof paper, trans
parent and impervious to grease, is
made by saturating good paper with q
liquid prepared by dissolving shellac ut
a moderate heat in saturated solution
of boraN. Such q mixture may be col
ored by the addition of various aniline
dyes.
The Germans have been making ex-
pefiments with a view to ascertaining
the relative strength OF hard and soft
steel, and iron beams or girders. The
results show that the soft steel Orders
We're % per cent. and the hard steel
orders sc per cent. stronger than the
iron gir,lers. and the strength of steel
was found substantially the same for
the two tianges when similar in section.
Ii is very easy to make any ordinary
paper temporarily translucent by simply
dampening it with sponge moistened
with benzine. In this condition it is
sufficiently transparent to permit of the
lines OF a drawing being seen through
it, and of ink or water-colors being
used on its surface without running.
AS the benZine evaporates the paper
loses its translucency and assumes it's
ordinary Opaque appearance. If this
occurs too quickly. the part can easily
be dampened again with bcnzine. The
Saint smell of the oil which will remain
will disappear in a day or two if the
paper is left exposed to the air.
\ METHOD of preventing the incrusta-
ton Of boilers quite common III Ger
many is as fellows: The feed water is
forced through one Of the usual feed
contrivances into the steam dome, in
which it is mixed by Jet of steam en-
tering concentrically. in order that it
may. during the mixing, be cast viio-
lenrly against tie cover of the dome.
Ihe effect of This movement is that all
the water receives the full temperature
OF the surrounding steam. BY this
sudden heating, air and carbonic
acid are. Withdrawn from the water and
not only the carbonate of lime, but the
sulphate OF lime and magnesium are
extracted, and the precipitate occa-
stoned is periodically removed.
AN English firm has introduced
new chimney-top which is said to effect,
ually perfect down-draughts in CHIN
heys. They ave made from number
OF Srooved rings placed one on the
other, but having intervening spaces
between each ring (the rings when
made OF metal are tied together by
rods, but when made from clay they
can be burned together). When the
wind strikes the grooves it will return,
and in doing SO will draw air up the
chimney. and UP through the spaces at
the top, thus preventing a down-draught
and compelling an up-draught. No
cowl OF cap is needed; every action of
the wind is provided for; the appliance
is stationary and easily fixed by anv
bricklayer. When made in clay it is
certainly less ugly than most similar