Butte semi-weekly miner. [volume] (Butte, Mont.) 1886-1890, 1886-05-15
THE STURTEVANT MILL.
Its Trial at the Moulton Yesterday
Witnessed by Many.

Witnessed by Many.
The trial run of the new Sturtevant mill,
which is to be used for pulverizing ores,
matte and other hard substances, and
ia to be substituted for the stamp
mills now in use, took place at the Moulton
mill yesterday. The mill wal to have been
tested tue day previous, and a general in
vitation had been extended the public to
be present on the occasion. A number OF
persons who are interested in improve
ments on mining and milling.machinery, etc,
responded to the invitation, but when the
start was made, the main driving belt,
which is a new one, hogan to stretch, and
a stop for repairs was necessary. Alter
the belt had been shortened another start
was made, and otter a run o. about ten min
utes the suction blower got out OF working
order and another stop was ordered. This
closed the test for Wednesday, and on yes
terday morning a new start was made,
hut. like all new machinery, a few more ad-
ditional fixtures were required.
The mill is q very simple arrangement.
It ia composed of two cylindrical heads, or
cups, arranged upon the opposite sides ola
case, into which they slightly project, fac
ing each other and revolve in opposite di-
rections. The rock being conveyed to the
interior of the case through the opening at
the top, is retained and prevented from
dropping below the revolving heads groups
by a cast iron screen; and entering the
heads or cups in revolution is Immediately
thrown out again from each cup. in oppo-
site directions with such force
that the rock from one cup, in the
collision with the rock thrown opposite
from the other cup, is crushed and pulver-
lied, and the grinding, which otherwise
would be upon the mill, is transferred to
the material, which is at once reduced
to powder. The pulp is then taken up
by means OF an elevator and the finest OF it
passes through a screen, while the coarser
rock drops into the shute which feeds the
mill and again goes through the process OF
truturation. There are six different sizes
of the mill, the one o on trial at the
Moulton being the largest size in use. The
gentlemen having charge OF the construc-
ton of the mill claim that it will pulverize
from seventy-five to 100 tons OF rock
every twenty-four hours, and Judging from
the manner in which it consumed tie rock
Yesterday, we opine that it will accomplish
that which is claimed for it by it's project
ors. Another test OF the mill will be made
this morning, and as a number of our min.
ing and milling men are interested in its
success, which is an assured TACT, we ven
ture the assertion that not a few persons
will witness to-day's run.
In conversation with Mr.. Joe Clark, Su.
perintendcnt of the Moulton mill, in regard
to it's general success. and the effect it
would have on the present mode Of tritur'
ating ores with the stamp, that gentleman
informed us that he could not as yet make
q statement as to it's success, as it had not
in reality had a trial, but if it proved to be
what it is fast approaching-a revolution.
izer for the reduction of ores-it would
cause the old stamps to be hung up, az the
new arrangement could crush all the orr
] they could handle 1t q much less cost.