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289
Astounding Stories of Super-Science, August 1930
·
Various
97
A
REVOLUTIONARY
AIRPLANE
A
new
airplane
propeller
has
recently
been
patented
by
J.
Kalmanson
of
Brooklyn,
N.
Y.
Greater
speed
and
marked
saving
in
fuel
is
claimed
for
the
invention,
which
may
be
attached
to
any
type
of
airplane.
The
device
is
in
two
parts,
which
may
be
used
separately
as
front
and
rear
propellers
or
combined
into
a
single
blade.
The
principle
is
that
the
front
one
acts
to
bring
air
to
the
other,
giving
the
propeller
more
of
a
hold,
so
to
speak,
and
greater
power.
This
is
accomplished
by
four
air-spoons,
one
on
each
side
of
each
blade
of
the
propeller.
It
is
said
that
the
device
can
double
the
speed
of
an
airplane
and
raise
it
from
the
ground
in
ninety
feet
instead
of
the
200
feet
most
airplanes
now
require.
It
is
also
claimed
that
the
new
propeller
will
prevent
the
plane
from
making
a
nose
drive
unless
the
pilot
forces
it
to
do
so,
and
enable
it
to
make
a
safe
landing
within
a
short
distance.
Because
of
the
increase
in
power
and
speed,
the
device
would
save
a
large
amount
of
gasoline
and
oil,
as
well
as
guarding
the
motor
from
part
of
the
strain
on
it.
The
device
is
said
to
be
also
applicable
to
ships,
the
same
principle
operating
in
water
as
well
as
air.
Silver
Dome
By
Harl
Vincent
[Sidenote:
In
her
deep-buried
kingdom
of
Theros,
Phaestra
reveals
the
amazing
secret
of
the
Silver
Dome.]
In
a
secluded
spot
among
the
hills
of
northern
New
Jersey
stood
the
old
DeBost
mansion,
a
rambling
frame
structure
of
many
wings
and
gables
that
was
well-nigh
hidden
from
the
road
by
the
half-mile
or
more
of
second-growth
timber
which
intervened.
High
on
the
hill
it
stood,
and
it
was
only
by
virtue
of
its
altitude
that
an
occasional
glimpse
might
be
obtained
of
weatherbeaten
gable
or
partly
tumbled-down
chimney.
The
place
was
reputed
to
be
haunted
since
the
death
of
old
DeBost,
some
seven
years
previously,
and
the
path
which
had
once
been
a
winding
driveway
was
now
seldom
trod
by
human
foot.
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