SINGER W1640 - Manual (Page 29)

SEWING ON BUTTONS
You can sew both two and four holes of
buttons with your machine.
Change presser foot to the button sewing
foot (Fig. 39) and lower drop feed by
placing feed cover on needle plate (See
Page 17). Set Patch-O-Matic Darner so
pressure is completely released. (See Page
17, A. Fig. 27.) Set Stitch Selector (C Fig.
35) at l| Place button under button sew­
ing foot so that needle enters left hole
freely. Set Stitch Width Dial the same width
as the hole in the button. Turn Hand Wheel
toward you and test carefully that the
needle goes through the center of first one
hole and then the other. If necessary, adjust
zigzag width. Then sew 5 to 6 stitches.
Turn Stitch Width Dial (B Fig. 35) for
straight stitching and take about 3 stitches
to lock the thread.
Thread Shank
Sew-through buttons on coats and jackets
should have a thread shank to make them
stand away from the fabric.
Place a straight pin or sewing machine
needle on top of button between the
holes, and sew over the pin or needle.
(Fig. 40)
Pull thread to back of button and wind
around stitches to form a firm shank.
Tie thread ends securely.
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