Lab
Library
Journal
Shop
Sign in
to keep
Share image
1
165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
105
TURNBUCKLES.--A
turnbuckle
is
composed
of
a
central
barrel
into
each
end
of
which
is
screwed
an
eye-bolt.
Wires
are
taken
from
the
eyes
of
the
eye-bolt,
and
so,
by
turning
the
barrel,
they
can
be
adjusted
to
their
proper
tension.
Eye-bolts
must
be
a
good
fit
in
the
barrel;
that
is
to
say,
not
slack
and
not
very
tight.
Theoretically
it
is
not
necessary
to
screw
the
eye-bolt
into
the
barrel
for
a
distance
greater
than
the
diameter
of
the
bolt,
but,
in
practice,
it
is
better
to
screw
it
in
for
a
considerably
greater
distance
than
that
if
a
reasonable
degree
of
safety
is
to
be
secured.
Now
about
turning
the
barrel
to
secure
the
right
adjustment.
The
barrel
looks
solid,
but,
as
a
matter
of
fact,
it
is
hollow
and
much
more
frail
than
it
appears.
For
that
reason
it
should
not
be
turned
by
seizing
it
with
pliers,
as
that
may
distort
it
and
spoil
the
bore
within
it.
The
best
method
is
to
pass
a
piece
of
wire
through
the
hole
in
its
centre,
and
to
use
that
as
a
lever.
When
the
correct
adjustment
has
been
secured,
the
turnbuckle
must
be
locked
to
prevent
it
from
unscrewing.
It
is
quite
possible
to
lock
it
in
such
a
way
as
to
allow
it
to
unscrew
a
quarter
or
a
half
turn,
and
that
would
throw
the
wires
out
of
the
very
fine
adjustment
necessary.
The
proper
way
is
to
use
the
locking
wire
so
that
its
direction
is
such
as
to
oppose
the
tendency
of
the
barrel
to
unscrew,
thus:
Marker
Marker
Fine marker
White-out
Fine white-out
Circle
Paint
Unmarker
Hand
Scalpel
Dice
Sieve
Purify
Undo
Redo
Start over
