Weekly Arizona journal-miner. [volume] (Prescott, Ariz.) 1903-1908, 1904-01-20

W my AhbO anu vail y
values from $50 to 800 per ton.
The mine is making from 1900 to
10000 gallons of water each twenty
four hours now, while the consump-
tion of water by the mill and boiler
is between 20, 900 to %, 600 gallons per
day. A new reservoir has just been
copleted with capacity of about GO, =
600 gallons and there is a tankage
capacity of about 5000 gallons at the
plant.
Among the other machinery of the
plant is a 10 horse power engine which
operates the ore crusher, an eight
horse power engine to operate the
conce 1trating table, 30 h. p. boiler
which furnishes all the steam for
running the stamp, hoist, station
pump, engines, ETC., it only requir-
ing about three cords of wood each
twenty four hours for all purposes of
the plant. There Is an abundance of
timber for fuel anu Zine timbers on
the property.
Owing to the fact that this steam or
compressed air stamp is a new thing
in this section, and very different from
other steam stamps that have been
tried in other sections of the country,
a more detailed description will be
given of it.
Many of the Objectionable features
of other steam stamps have been over
come in its construction.
Attached to the mortar are four
iron columns which support the top
plate from which the steam cylinder
is suspended. The method of secur-
ing the cylinder is one of the most
important features of this stamp. This
is accomplished by hanging the cylin-
der from top plate with ball joint,
which allows universal movement of
the cylinder, and adjusts itself to any
position of the stamp rod. This rod
is kept in line by guide bearing on
the top of the mortar which is made
adjustable for taking up the wear of
the guide blocks.
The arrangement OF this guide, aud
more especially the methai Of secur-
ing the cylinder by ball and socket
connection, overcomes one of the most
serious 3irficulties heretofore encoun-
tered in building and operating steam
stamps, for it Is a we'll known fact
that if the cylinder is mounted rigid
ly it causes undue wear of the cylind-
er and piston head. When it is nee
essary to lower the cylinder, an attach
ment rings a gong at the proper time.
The valve, and the novel method by
which this is operated, is one of the
most important features of the entire
construction. This is simply a piston
valve with no outside connections and
is operated directly by steam pres
sure or equally as we'll by compressed
air. Without any mechanical connec-
ton between the valve and the pis-
ton, their action is automatic and both
are operated by pressure. To illus
trate how important this valve is to
the stamp. it is only necessary to say
that with this stamp having a stroke
of nine inches, it is possible to fill
the mortar with ore, until the stamp
has only one half inch stroke and vet
the valve will operate as perfectly at
one half inch stroke as it will at the
full stroke, and the same will be the
case with any stroke between one half
and nine inches. This is something
which has never before been accom-
plished with a steam stamp. This feat
ure is one of greatest value. To oper-
ate the automatic feeder of the stamp
a tappet is affixed to the rod below
the cylinder. This tappet is so con-
5tructed that it will catch and hold
any drip, or oil, that may escape
from defective packing around the
piston rod.
The capacity of the stamp depends !
On the pressure carried, the character
Of the ore, and the size of tine screen |
mesh used. This stamp is adapted to
he reduction of all kinds of milling |
1re as the force of the blow can be
7aried from a very light to a very
heavy one, and adjusted to suit the
character of the ore treate 1.
These mills can be constructed |
'eady to operate for less than $500,
md the company would be pleased to |
nave anyone interested in milling or
mining to come and see their stamp in
operation.