14,
Regulating
the
Feed
Lengthwise
Motion
The lengthwise clamp travel is derived from the control slot on the back
side
of the
feed cam. This motion is conveyed to the work clamp by
means
of feed regulator a
(Fig. 14), feed regulator
post
K. feed plate carrier b and arch clamp frame L.
To adjust the feed lengthwise motion. loosen screw B and move hinge block J, as fol
lows.
Move it up
as
far
as
It will go to
reduce
lengthwise
clamp travel to zero, or down to
increase
travel.
Note that for certain tack designs which are not'actually bars, hinge block J must not
be moved if
the
proportions
of
the
design
are
to be
preserved.
^ R
7576
K-
Fig. 14
15. Dismantling
the
Shuttle
Race
If the machine is
used
constantly,
clean
the shuttle
race
from time to time.
Let the machine run until it
stops.
Tilt It over to the left, resting it on the
wooden
peg.
Open the cylinder bed cap. press down and
pull
it
off.
Remove
the bobbin case and
bobbin. Take out
screws
h and I (Fig. 15)
and.strip
shuttle
race
ring d. Then, seize the
shuttle by its center stud and
pull
it out. Take care that the springs on screws h and I
don't
get
lost.
The shuttle race proper need not be stripped for cleaning. Take a pair of tweezers and
remove pieces of thread that have accumulated In the area behind the shuttle race.
Then, with a toothpick or similar wooden instrument, clean the raceway of the shuttle.
Never
use
a
metal
tool
for
this
purpose.
To
assemble
the
shuttle
mechanism,
reverse
the
above
procedure.
Note
that
the
point
of the shuttle should point downward when you Insert it. Don't forget to
replace
the
springs on screws h and i and to put a drop of oil into the shuttle race after it has
been
re-assembled.
The springs on screws h and I hold the shuttle race ring in elastic suspension and pre
vent damage to the machine if thread should jam in the raceway. Pieces of thread or
lint
that
should
have
entered
the
race
can
thus
be
easily
removed.
R
5790
-V-i-
h—^
Fig. 15
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