Pfaff 1196 Instruction Book page 29

Hold the material flat with both hands. Stitch
back and forth across the hole lengthwise,
with the machine running at high speed. Be
sure the stitches are closely spaced. Then
turn the fabric at right angles and sew back
and forth over the preceding work with short
stitches. This anchors the threads in the un
worn area around the hole.
Tubular articles, such as sleeves, trouser legs
and st'cKings, can be easily darned on the
tree arm of the Pfaff 1197. Stitch back and
forth across the hole, first crosswise, then
lengthwise.
Triangular tears and rips are best darned with
close stitches across and lengthwise.
After you have finished darning, swing the
reverse-feed
control back to its regular
sewing position.