! The Newest in Song
and Dunce
O'M ’ y
*0, iJ PHONOGRAPH
RECORDS
Me and My Wife ...... )
Never Let No One Gai Worry Your Mind . \ 2229
Hand in Hand Again.{
C ut of a Clear Sky ...... J 2227
I'm Just Simply Full of Jaza .... I
Ain’t Cha Coming Back Mary Ann ro Maryland ( 22"
Haw Sorry You'll Be (Wait’ll You See) . I
Oh!.J 22280
* » [
When \ ou’ re Alone . . . . . I
Dreamland Brings Mcm’ries of You . . j x““83
I’ll Always Be Waiting for You ... )
We Must Flave a Song To Remember . . \ 2x~81
Dardanella ....... I ,77B9
Wonderful Pal . . . . . . . )
£UIR° Q * ,*.j 22285
On the Streets ot Cairo ..... )
Bo-La-Bo ........ /
•»> tu l ZiiOO
bOW-WOW ♦ ...♦•• )
I Might Be Your Once-In-A-Wh.Ie . . (
You’d Be Surprised ...... i x2289
Come Along to Honeymoon Town . . I
Goodnight Dearie ...... } 2x287
Mighty Lak’a Rose . ..... (
Somewhere a Voice is Calling ... )
Cordova! irug Co.
I AND NOW IT’S I
I KODAK TIME I
v* •*%
ig YOU WANT TO GET BETTER PICTURES THAN EVER jg
jg THIS YEAR. DON’T HANDICAP YOURSELF. gj
gj DON'T SPEND GOOD TIME AND MATERIAL AND THEN gj
jg GET POOR FINISHING. BRING OR MAIL YOUR WORK TO jg
& US OR THE CORDOVA DRUG COMPANY, AND GET THE gj
| BEST. g:
jg TWENTY-FIVE YEARS’ EXPERIENCE AS A PROFESSIONAL jg
gj PHOTOGRAPHER. WE KNOW HOW. jjjj
1 C- W. SCARBOROUGH I
.v !•>
•V
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(Continued from Page One)
loy for toughening steel were already
under way. But small quantities were
involved in the tests, and results, al
though encouraging, had not pro
gressed to the point of producing mo
lybdenum commercially. Many author
ities thought they never would. How
ever, the romance of molybdenum be
gan almost simultaneously with the
outbreak o fthe world war. For it was
about that time that the great Colo
rado deposits were discovered and
their development begun.
Almost immediately, pioneer seekers
for a super-steel resumed experiments
with new spirits an don a much larger
scale. Their striking success has re
sulted in putting molybdenum on the
steel market. Molybdenum flew over
German troops in the motors of allied
airplanes. Molybdenum helped repel
the terrific impact of high-powered,
armor-piercing German ammunition as
part of the armor plate of the French
baby tanks. Later molybdenum played
its part again in the crank shafts and
connecting rods of a Liberty motor,
when the gallant NC-4 spanned the At
lantic.
These worthy achievements for pui’
poses of war have stimulated steel
manufacturers to turn the sword into
a plowshare; to utilize for purposes of
peafee this new allow which proved
its worth so well in machines of war.
As has been said, molybdenum steel
has the greatest available strength of
any of the a'lloy steels. It has the
greatest width of temperature range
W ILlillJL WI1IUI1 SLCtJlS UfcIII Ut5 uuiii nai u
enecl and tempered. It is the most
easily machined of any alloy steels
treated to given elastic limits.
The practical results of these at
tributes are many. It is predicted that
a 25 to 33 per cent reduction in the
weight of automobiles will be permit
ted through molybdenum steel’s su
perior strength and resistance to
shock and fatigue. The mileage of a
gallon of gasoline will increase.
Lighter engines can he used to drive
the customary loads of today at higher
speeds than now in vogue.
One of the outstanding metallurgi
cal achievements of the war was the
- molyzdenum-chrome-nickel steel used
in Liberty motor parts in quantity.
It possessed dynamic and physical
properties together with exceptional
machining qualities previously unat
tainable. Again, molybdenum came to
the front when a lighter armor was
sought for tanks. The cast manga
nese-steel turrets and gun protectors
had proved too heavy and too cumber
some with their three-inch walls. They
were also quite ineffective when
facing German ammunition, which
penetrated and often passed entirely
through the turrets. The incredulity
of French engineers, therefore, can
be imagined when an American man
ufacturer evolved a turret and gun
protector of flanged and formed armor
plate that ranged in thickness from
one-quarter to five-eights of an inch.
Nickel-molybdenum and chrome-mo
lybdenum steels were used in this
case, and it is these types which are
being projected for airplane, automo
bile, truck and tractor parts.
Molybdenum is a metallic element
which, in ore form, is very similar in
appearance to graphite. At £he flota
tion mill at the Colorado mine, molyb
denum ore is ground and concentrated
“by oil flotation into concentrates of
from 60 to 70 per cent MoS2, which are
then converted into ferro-molybdenum
or calcium molybdate.
There are four distinct molybdenum
steel types—chrome-molybdenum, sub
divided into grades according to their
carbon and chromium content and
again classified according to the mo
lybdenum content; chrome-nickel-mo
lybdenum; nickel-molybdenum, and
chrome-vanadium-molybdenum.
In all of these types there is no
greater percentage of molybdenum
than 1 per cent, and the average is
.3 to .4 per cent. English steel tool
makers have perfected a molybdenum
steel combined with cobalt in which
the molybdenum content runs as high
as nearly 6 per cent; this product is
utilized for tools which are subjected
to excessive heat caused by friction
in cutting.
With its steel-hardening quality, mo
lybdenum steel combines lightness and
strength; lends itself to easier ma
chining with a much wider range of
heat treatment; possesses a greater
tensile strength and a greater elonga
tion with a higher dynamic impact
value.
This latter quality—that of greater
dynamic and impact value, which mean
superiror resistance to repeated
stresses and suddenly applied shocks
—should make of molybdenum steel
a much more satisfactory medium for
making springs than the former stand
ard chrome-vanadium steel springs. In
substantiation of this claim, it is point
ed out that the Fifth avenue busses
in New York city employ springs of
molybdenum steel.
Corresponding somewhat to the
English formula for tool steels, in that
the content of molybdenum is greater
than in the American automotive steel,
the German formula has become
known in this country. The Germans
made us of molybdenum when their
supply of tungsten ran out. It is be
lieved that they learned of its value
from observers who told them of
English utilization of it. Most of the
German supply came from Norway.
As evidence of the increased use of
molybdenum, it has been estimated
that in the last two years two hun
dred thousand tons of molybdenum
steel have been manufactured in the
United States. Primarily a toughener
of steel, molybdenum acts more bene
ficially upon steel than chromium, be
cause it does not develop the quality
of brittleness that is characteristic of
simple chromium steel. By the addi
tion of molybdenum, brittleness de
creases and toughnes increases.
one show only,
EMPRESS |
LAST TIME TONIGHT
THE
WOMAN
THOU
GAVEST ME 1
PLAYED BY
KATHERINE MACDONALD
*
AND AN ALL-STAR CAST
A stupendous Artcraft special, pulsing with
emotion, vivid in action, filled with sensational
scenes in England, India and Africa, dealing
with
THE GREAT QUESTION
LATE PATHE NEWS 1
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IN
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PHONE 99
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DEALERS IN ALL KINDS OF
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CORDOVA, ALASKA
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PIONEER AND SWAN
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REGULAR TRIPS TO KATALLA
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Phone 57—2 Rings
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..g j
I OVER 5,000 MILES OF ALASKA’S WESTERN COAST LINE HAS BEEN PRONOUNCED HIGH GRADE OIL LAND BY §
I GOVERNMENT GEOLOGISTS. MUCH OF IT IS PROVEN GROUND. IT IS YOURS FOR THE COST OF STAKING g
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“Star” Oil Well Drilling Machinery |
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JL JLrfT j>£ju git Drill Stem Rope Socket Ro*>« « »
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1 600-FOOT PRELIMINARY PROSPECTING OIL WELL DRILLING MACHINE-600-FOOT §
Guaranteed 600-foot capacity six-inch hole. Steam or Gasoline Driven. Steel Wheels or Skid Mounting. Self-Pulling Attach- |
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| HARMON MACHINERY COMPANY, INC.
1 MAIN STEAMER DOCK EST. 1914 CORDOVA, ALASKA |
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