Gold Hill daily news. [volume] (Gold Hill, N.T. [Nev.]) 1863-1882, 1867-12-12
|. onusHER ExrnAoRDrNARY.

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We we're yesterday shown diagrams
and drawings descriptive of a machine
for crushing quartz, which if only one
half as successful as it really promises,
will prove by far the most effective
crushing instrument ever applied to the
reduction of ores, ut least on this coast,
as well as being Of altogether %incalcu-
liable Importance to our mining interests
at large. It is the invention Of q gen.
tleman of this County, well versed in
quartz milling machinery and the re-
duction Of ores, and the principle on
which i. operates he has tested, and
found i, to work very satisfactorily. In
this machine he has adapted the prin-
ciple in a more perfect and effective
manner, and intends as soon as possible
to bring it into practical use.
This mill or crusher is simply an iron
wheel six feet in diameter, and weigh
ing about a ton, with n chilled iron sur
face twelve inches in width, which will
be made to rotate alternately backward
and forward over q grating composed OF
heavy bars, placed one, two, or three
inches apart, as may be found requisite.
The wheel rotates in q narrow space be-
tween two walls, and is kept in proper
position by means of iron guides placed
at the axle, allowing it to move freely
in the directions proposed. By means
of self regulating springs and a sliding
beam, an immense pressure is brought
to bear from above, directly upon the
upper periphery Of the wheel, and the
motion is communicated by means OF
power applied to a crank in the center
of the wheel, causing it to move about
seven feet, backward and forward rs be-
fore described.
This same power which moves this
wheel, also causes u little distributing
car on each side of the wheel to follow
it up with the requisite supply Of quartz,
which being distributed in the proper
place, the immense pressure OF the
wheel is brought to bear upon it, grind
ing and reducing it to such a degree
that it passes down between the bars
upon q screen below, where that which
is not reduced to the proper degree of
fneness for grinding and amalgamatiug
by pan process, is separated for further
| treatment under the wheel. We do not
care to enter into u minute description
of the details, but all the little emer-
gencies arc provided for. The general
idea, especially of the pressure applied
to the top Of the wheel, partakes some
what of the character of a larceny upon
the Collins mill, of which We gave a
description in our last Mondays issue,
vet this is far more simple in its opera
ton, reminding one Of the principles
involved in the rolling out Of ~pie-paste
with n rolling-pin.
According to actual figured estimate,
with this new mill, considerably owe,
one hundred tons Of quartz u be
crushed in a day, and q competent en-
gineer estimates that a ten horse power
engine will be fully competent to do the
work. Millions upon millions Of ton:
of low grade ore are awaiting some such
cheap mode of crushing rs this prom
Uses, in every portion Of the State, a
we'll as in our own famous Comstock
The Sierra Nevada mine, for instance
containsan mostinexhaustable amour
Of eight or ten dollar orc, which, b.
means of some such cheap and efec
tive continuance, might be ground u
and sold to pan o. arastra workers a
, good profit, should the mine owner
not see fit to work the ore further
themselves.