Blindstitching; A) Three-Cam Groups; B) Loose Cams - Necchi Automatic Supernova Ultra Mark 2 User Instructions

NECCHI BUTTONHOLE CUTTER
·Z1
"' ·
The buttonhole cutter has many purposes
such as: cutting off buttons, cutting button-
holes, cords, seams etc.
:::r
;:i:;
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1JI Fig. 59
41. BLINDSTITCHING
Blindstitching makes it possible to sew together two pieces of fabric (a flat
piece " M " and a folded one " N ") (Fig. 60), so that stitches appear on one
side only.
Lever " B
»
(Fig. 1): in centre notch.
Lever « C
» :
move it between 2 and 4 so that needle enters in the middle
of the folded fabric.
Knob " D " : on 4.
Presser foot: use hinged transparent foot for zig-zag, provided with blind-
stitching guide.
Check whether folded edge of fabric
«N» is in contact with blindstitching
guide. If stitches are visible on the
inner side of fabric " N
»
also, de-
crease zig-zag width; adjust position
of guide by means of screw " F
»
(Fig. 60). The seam should appear
as shown in Fig. 60.
~2
Fig.
60
Chapter 3
AUTOMATIC
SEWING MECHANISM
42. TO PREPARE THE CAMS
C9
Fig. 61
b) LOOSE CAMS
a) THREE-CAM GROUPS
The cam-group being already
assembled (Fig. 61), there is
only to insert it in machine.
- Choose first cam and slip it onto cam-holder bushing
" E " (Fig. 62). The face of the cam on which the
chosen number
i~.
stamped must be turned upwards.
- Slip second and third cams in the same manner and
tighten nut " F
».
F~
3@~
2~
1~
Ea
Fig. 62
NOTE: To make the patterns illustrated in the following charts turn mark
lines " r " stamped on each cam face in the same direction.
By turning mark lines " r
»
in different directions, different patterns are
obtained.
33