The Seattle post-intelligencer. [volume] (Seattle, Wash. Terr. [Wash.]) 1888-1914, 1895-10-01
FOR SAVING FLOUR GOLD.
\ Garfield County Man Invents a Sue
ceSsfni Machine
Pomeroy washingtonisn.

Pomeroy Washingtonian.
}. r. Macmaster has been East for some
time obtaining patents and having
gold saving machine built for use on Snake
river, al the mouth OF Alpowa creek The
process used is combination Of centrifu
gal power and what might be called
water sand blast" In this machine
there Is a circular revolving vertical CYL
in1er closed at the bottom but omen ar the
top This cyliAder is very strong. being
made OF tough annea.sd steel. q with
stand the great centrifugal pressure which
is developed by the rapid rotation 10 which
II IS subjected when in operation
Mercury Is poured into this cylinder. the
rapid rotation Of which causes the mercury
70 climb and cover the entire vertical wall
where Il IS held in a compact, condensed
condition by the centrifugal pressure. pro
VISION being made in the construction Of
the machine 10 prevent the mercury from
being thrown out. IN the center there is
a feeder, or distributor. attached 10 the
cyhnder AMI revolving Herewith through
the upper opening of which the sand and
water. or pulp enters and passes Down
ward and outward through the openings
me water and sand is set in rapid mo-
ton by nanges and on leaving the lower
edge is thrown with immense force against
the vertical wall OF mercury on striking,
the sold penetrates the mercury, but the
sand rebounds. is carried upward by the
water and discharged over the upper edge
OF the cylinder into an outer casing. from
whence IL passes into the tail race. Cod
being OF high specific gravitv-no mat
ter how almost invisibly fine II may he
on striking with such force. has the pen
etrating power TO pass through the mercu-
~ and lodge against the walls OF the CYL
inder. where IL is held by centrifugal pres
sure. while the crushed quartz being OF low
speclnc gravity, rebounds and IS carried
Ir.A y
nor Goes II Hour, II simply acts as con-
densed liquid target against which the ma
terial rs projected. The fact Of It's being
under centrifugal pressure. which is sew
eral hundred pounds per square inch, pre-
vents II being Toured. In an air sand
blast, every individual particle Of sand
strikes the object against which Il i pro-
1ected so in this water sand blast every
grain OF sand and gold strikes the mercu-
rial target the gold. as said before, pene-
trating, but the sand rebounding in which
point lies the perfect success OF the ma
chine-in saving every vestige Of gold
great advantage Of this machine Is it's
capacity for handling a large quantity Of
material per day, for. on coming under the
centrifugal action. the sand enters and
passes through like a fash. The principle
or projecting gold-bearing mediums
against mercury. whilst held IN a conGens-
cd condition by centrifugal power. is some
thing entirely new in mining.
When used In quartz mills = small ma
chine. occupying floor space Of only SKIS
feet, will entirely do away with the use Of
plates In the batteries, vanners and eva
hide or other processes. and will make
perfect extraction OF all the free gold from
go tons Of crushed quartz per day. Small
hand power machines weighing less than
fifty pounds each viii handle many tons
per day. and can he easily carried about
bV- the pT9Spsctor