Montana oil and mining journal. [volume] (Great Falls, Mont.) 1931-1953, 1939-04-01


Newest use for dry ice, carbon
dioxide ice-making gas produced
from wells in Utah, and Few
other places, is used as coolant
for machine guns.
A detachable jacket, filled with
dry ice end slipped over the bar
rel, keeps the gun continuously
cool The scheme enables fighting
planes and bombers to carry fewer
guns. vet to maintain continuous
fire.
Lubricating by thermometer
Latest piece of equipment for
service stations is a thermometer.
It seems that lubricating motor
vehicles in tickle weather, with the
temperature indicating summer
one hour and mid-winter bit later,
isn't so easy. So a technique has
been devised whereby, with Their
mometer. a chart, and some scien-
tifically-matched lubricants, the
vehicle can be given a thorough
and satisfactory job under any
conditions, and just the right oil
put into the crankcase.
Keeping in Line
Keeping motorists in line will
be easy hereafter. A new road
stripping stainless" petroleum as
phalt can be dyed permanently in
any color-even silver-and will
last as long as the road itself
Highly visible aluminum-colored
guide lines of this new material
are being used to mark several
stretches of asphalt highway.
Discovered by accident in the
laboratory-a spilled dye proved
to be unremovable-inv
revealed that only small percent
age of dye was needed because of
its light color. Asphaltic qualities
of wear, adhesiveness and weather
resistance were unimpaired.
Keeping Coal ''F'resh''-
Keeping coal fresh" was No.
1 worry for the bituminous coal
industry until experiments dis
closed recently that a gallon or
two of oil sprayed over a ton of
bituminous coal will coat every
lump with a film which keeps it
practically dustless for months in
all kinds of weather.
Since coal varies in consumption,
the quantity used for spraying is
regulated to get the best results
with maximum efficiency.
PetroIines-
Recent oil discoveries between
the Ural Mountains and Western
Siberia are being developed on a
wider scale by the Soviet petro-
leum industry.
Fuel costs are cut to a minimum
through the use of gasoline blow
torch for heating in a new spray
gun for lead-tin alloys.
Three out of four steel workers
own automobiles and rate motor
ing as their favorite recreation
Under the Hood
In the ordinary operation of
small, modern automobile engine,
metallic surfaces equal in size to
a newspaper page brush together
100 times a second. Wear is re-
duced because a film of oil sepa-
rates the moving metal parts. 1t
also transfers heat to water jack
cts, seals in the power strokes, and
keeps the cylinder walls clean
This oil film is only a fraction of
one one-thousandth of an inch
thick.
Watches
Watches, once a family heir
loom, are worn today by every
member of the family-even the
12-year old son. His inexpensive
''sports" wrist watch has no jewel
bearings, nevertheless it keeps
time
Modern lubricants, watchmakers
have discovered, make friction-re-
sistant jewel bearings unnecessary.
Cheaper materials work perfectly
with today's efficient lubricants !
which cling to microscopic parts |
and "inhibit" the action of acid |
rusting agents.
PetroIines-
Thermite bomb" recently pat
ented, will start a flow of oil from |
new level inventor claims.
Pilots are experimenting with |
frozen" gasoline for use in combat |
planes. Cooled with dry ice and |
alcohol, inventor claims it cannot |
be ignited by bullets
Geophysical exploration and new |
drilling technique increased world
oil output S5 per cent between
1926 and 1929.
Recent experiments reveal the |
possibility of using compressed
gases such as helium and nitrogen
for low-cost insulation of power
transmission lines.
New antitrust preparation for
machinery or tools forms a tough.
elastic nonporous film which can be
removed with gasoline or kerosene
when the article is ready for use.