To odjust, set the roller stud in the middle of the
elongated
hole in the
feed
across
regulator
(Fig. 32). Loosen wing nut 5 (Fig. 31),
and
move
boll screw stud 7 to its extreme left position in the slot of the feed across
regulator (marked A in Fig.
31).
The machine is now set for the largest
amount
of crosswise clamp travel. Turn the driving pulley,
and
check whether
the right-
and
left-hand ends of the feed plate cutout
are
equidistant from
the needle hole when the feed plate is at the extreme right or left of its
throw. To adjust, loosen screws a
and
b on the feed
across
shaft
front
crank and adjust the position of the feed plate, as appropriate.
Move ball screw stud 7 to the right in the slot of the feed across regulator
as f»f as it will go, thus setting the machine for the smallest
amount
of
crosswise clomp travel.
This
position is marked B in
Fig,
32. As you turn
the driving pulley, check to see
that
the short tack side is centered within
the long tack side produced with the previous setting. If adjustment is
required, loosen screws c and d on the feed across shaft rear crank, and
move the crank slightly to the right or left on the shaft until the correct
setting is obtained (Fig. 32).
Again set the machine for the largest amount of crosswise clamp travel,
and check whether the left- and right-hand ends of the feed plate cutout
are equidistant from the needle when the feed plate is at the extreme right
or left of its throw. If necessary, adjust as instructed obove.
Provided the adjustment hos been made conscientiously, tacks of all sizes
will be correctly centered in the feed plate cutout.
If the
small
tack
is positioned to the left of the center
line
of the large
tack,
move the feed across shaft rear crank slightly to the left. And, conversely,
if it is positioned too far to the right, move the crank slightly to the right.
Fig. 33
The width of the tack can be odjusted within certain
limits
by moving ball
stud f lengthwise of the feed across shaft.
c. Timing the Thread Trimming Action
(1)
Adjusting the Knife Bar
The knife
bar
carries an
adjustable
fork
at
its
rear
end
which is secured in
position by two screws A
(Fig.
34)
and, hence, can be adjusted as may be requir
ed. The knife
bar
is positioned correctly if there is a clearance of
V32"
to
46
To Next Page
Loading...
Need help?
General
