SINGER 319K - Manual (Page 36)

34
TO REGULATE PRESSURE ON PRESSER FOOT
The amount of pressure influences the ease
with which you achieve a straight seam and
uniform stitching. The pressure should be
heavy enough to prevent side creepage of
material and light enough to carry the material
without marking.
The surface finish on fabrics, as well as their
weight, determine amount of pressure to be
applied. The glazed surface of chintz and pol­
ished cotton, the loose nap surface of satin,
the deep piled surface of velvet, the delicate
and broken surface of lace and brocade, all
require a lighter pressui e.
To set a light pressure, turn thumb screw
A2, Fig. 57 upward until fabric moves easily
under presser foot without slipping and with­
out showing feed marks.
To set a heavy pressure, turn thumb screw A2
downward until the fabric moves easily and
the seam edges are carried evenly by the foot
and the feed. Heavy, spongy fabrics like towel­
ing, chenille, coating, etc., require heavier
pressure.
■A2
1 k"
"V., }.-i \
\ i I
L ^ N-? ^ \ i
k t f n
!«■ \ •
/ /:
IM ic S p m ^
i'^i i iji pi'
/A
U \
f ! ■ H
ÍÍ
■ f
, i KJJ
Fig. 57
Thumb Screw
Adjusted for
Light Pressure
Fig. 58
Thumb Screw
Adjusted for
Heavy Pressure