Necchi Automatic Supernova Ultra Mark 2 - 18. Lighting; 19. To Replace Light Bulb

27. TWIN NEEDLE
The twin needle makes .it possible to sew
with two threads of the same colour or of
different colours.
The twin needle is to be inserted in the
same manner as the normal one, (Fig. 34)
with the flat side of its shank toward the
right.
Presser foot: for twin needle.
Needle plate: in position « Z n (para. 15).
Lower thread: it must pass by the hole
indicated in Fig. 35. Its tension should be
rather loose.
Fig.
315
22
~
Fig. 34
~
~
Fig. 35
Thread must pass by points
indicated in Fig. 36.
The tension device has double
cams between which threads
pass separately.
Fig. 37a, b, c, shows some of
the decorative stitches which
can be made with the twin
needle.
,)
)
a)
Lever "B n (Fig. 1): in centre
notch.
Lever " C n : on 5.
Knob "D n: on 3.5.
b)
Lever " C ,, (Fig. 1): on 2.5.
Knob "D n: on red square
mark.
Move lever " B ,, rhythmically
back and forth between right
and left notches.
c)
Lever " C n (Fig. 1): on 1.
Knob " D n : on red square
mark .
Move lever " B » regularly
from left to right and vice-
versa.
Fig. 38
H
-i:t:-, -1
S
........ , __
.... L..-1" ;...-. -.
·+ ~ .. - .. -r-t-1- ·
t--n, ,, ... ,~.a
' ~h 'Y~b
., "b,,,
c
Fig. 37
28. CIRCULAR SEWING
- Insert small rubber stopper • B • (Fig.
38)
in one of the holes " H n of slide plate
«Au.
Fix centre uf fabric on rubber stopper
" B " by means of pin " C n.
- Keep a finger on pin so that the fabric
revolving around the centre . point of
desigri
does not slip or become detached.
By moving slide plate « A n, circles of
various sizes can be obtained.
Circular sewing should be done only with
materials possessing a certain consistency.
With lighter materials, use an embroidery
hoop or place a piece of tissue paper under
fabric.
23