25. Adjusting
the
Stop
Motion Lever
Stop
motion
lever
p
(Fig.
23)
carries
a
catch,
Ei,
at
its
lower
end,
which
can
be
adjusted
vertically.
The spring-loaded tripping lever Fi carries an adjustable
latch,
Gi at its rear
end.
Both
the
catch
and
the
latch
should
be so
adjusted
that
latch
Gi
will
leap
about
halfway
Into
the upper
notch
of catch Ei
when
the
right
treadle is depressed to start the ma
chine. To adjust, loosen the hexagon screws.
When
you
make
this
adjustment
also
see
that
there
is a
clearance
of
about
(2
milli
meters) between the face of the stop link
(Fig.
24) and the highest point on the face of
the stop cam.
If
adjustment is required, loosen screw t
(Fig.
23) and reset
latch
Gi
In
the
groove
of tripping lever Fi.
; R
5485
Fig. 23
26.
Adjusting
the
Brake
Lever
of
Machines
with
Round-Belt
Drive
Adjust brake lever R (Fig. 23) so
that
there
is a
clearance
of
about
V32"
(7 millimeters)
between
hinged
brake
shoe
K
and
the
braking
surface
of
the
driving
pulley
when
the
machine
is In
operation.
Also
make
sure
the
brake
lever
can
be pulled off
the
pulley
V«4"
(2 millimeters) when the machine
has
stopped.
To
adjust,
follow
this
procedure:
Start
the
machine
by
hand.
Loosen
the
two
screws
q (Fig. 23),
set
hinged
brake
shoe
K
In
the
central
position
and
lighten
both
screws
securely.
Loosen
the
nut of
stop
screw
v
and
turn
the
screw
out
until It
turns
freely, without
any
resistance.
Then
turn
the
screw
in
one
or
two
turns.
Stop
the
machine
completely
so
that
the
stop
link
snaps
Into
the
groove
of
the
stop
cam. Check whether the
brake
lever
can
be pulled off the pulley
about
V<4"
(2 milli
meters)
against
spring
pressure.
If
further
adjustment
Is
required,
loosen
the
two
screws
q
and
move
the
brake
shoe
back
accordingly.
I
Make
sure
the
brake
shoe
exerts
a
sufficient
amount
of
pressure
on
the
braking
surface
of
the
driving
pulley
when
the
machine
is
being
stopped.
Fig.
24
Stop
tripping
segment
and
tripping
dog
Slop
com
Slop link
Stop motion lever
Tripping
lever
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