SINGER 15-91 - Manual (Page 21)

19
The machine can be adjusted to make from 6 to
30 stitches to the inch as indicated by the numerals
on the stitch indicator plate (C, Fig. 14).
The number of stitches to the inch that the ma­
chine is set to make is indicated by the number
which is in line with the upper side of the stitch
regulating lever (B, Fig. 14).
To change the length of stitch, loosen the thumb
screw (A, Fig. 14) and move it to the bottom of the
slot. Then move the stitch regulating lever (B) until
its upper side is in line with the number of the
desired length of stitch. Now move the thumb screw
(A) until the stitch regulating plate touches the
lever (B), then tighten the thumb screw (A).
The machine will now make the indicated number
of stitches to the inch in either a forward or reverse
direction, depending on whether the lever (B) is at
its lowest or highest position.
To Regulate the Length of Stitch
Basting
The longest stitch made by the machine. No. 6
on the stitch indicator, is found satisfactory for
basting, after loosening the tension on the needle
thread so that the stitches may be easily pulled from
the material.
Machine basting is firmer and more even than
that done by hand in addition to being much (juicker.
To Sew Flannel or Bias Seams
Use a short stitch and as light a tension as possible
on the needle thread so as to leave the thread loose
enough in the seam to allow The goods to stretch
if necessary.