Brother International LK3-B430 Service Manual - Page 6

connecting

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CLUTCH MECHANISM 0 0 0 0 0 -- A ---0 _- I. When start lever 0 operates in the arrow direction, the low speed part® of ball presser plate 0. which is fixed to clutch lever 0 via connecting rod 0. gets in line with the center of steel ball 0 to convey the power to the upper shaft. 2. One end of clutch connecting rod 0 is connected toclutch lever0,and the other end toclutchactuatinglever to drive clutch cam lever 0 about clutch actuating lever shaft 0 so that roller at its end goes up on the low ®. speed part 0 of clutch cam This makes the machine sew 2 stitches at low speed from the start. ®, 3. When roller projected part goes up on the of feed came so high speed part © of clutch cam control cam lever roller ® falls from a that roller holderID comes under roller O. This makes the machine sew up to4 ® ®, stitches before the final stitch at high speed. 4. When roller goes up on a projected part of feed cam roller® is released from roller holder® to fall on the high speed part © low speed, roller of clutch cam0,and then moves onto gets into a recess of clutch cam ID. the low speed part ®. As the machine sews 4 stitches at e. (Stop When Lever) stop lver (1) is pushed in the arrow direction, roller 0 is released from roller holder 0 and gets into a recess of clutch cam -4-

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CLUTCH
MECHANISM
0
0
0
0
0
--
A
---0
_—
I.
When
start
lever
0
operates
in
the
arrow
direction,
the
low
speed
part®
of
ball
presser
plate
0.
which
is
fixed
to
clutch
lever
0
via
connecting
rod
0.
gets
in
line
with
the
center
of
steel
ball
0
to
convey
the
power
to
the
upper
shaft.
2.
One
end
of
clutch
connecting
rod
0
is
connected
to
clutch
lever
0,
and
the
other
end
to
clutch
actuating
lever
to
drive
clutch
cam
lever
0
about
clutch
actuating
lever
shaft
0
so
that
roller
at
its
end
goes
up
on
the
low
speed
part
0
of
clutch
cam
®.
Th
is
makes
the
machine
sew
2
stitches
at
low
speed
from
the
start.
3.
When
roller
goes
up
on
the
high
speed
part
©
of
clutch
cam
®,
control
cam
lever
roller
®
falls
from
a
projected
part
of
feed
came
so
that
roller
holder
ID
comes
under
roller
O.
This
makes
the
machine
sew
up
to
4
stitches
before
the
final
stitch
at
high
speed.
4.
When
roller
®
goes
up
on
a
projected
part
of
feed
cam
®,
roller®
is
released
from
roller
holder®
to
fall
on
the
high
speed
part
©
of
clutch
cam
0,
and
then
moves
onto
the
low
speed
part
®.
As
the
machine
sews
4
stitches
at
low
speed,
roller
gets
into
a
recess
of
clutch
cam
ID.
(Stop
Lever)
When
stop
lver
(1)
is
pushed
in
the
arrow
direction,
roller
0
is
released
from
roller
holder
0
and
gets
into
a
recess
of
clutch
cam
e.
—4—