Singer 20U - Needle Bar Frame Clamping Device; Straight Stitching

NEEDLE BAR FRAME CLAMPING DEVICE
When straight stitching, a better sewing result can be
obtained by locking the needle bar frame immovable with
the clamping device.
To clamp the needle bar frame, turn knob clockwise as
far as it will go (about 1/4 turn).
When zigzag stitching, be sure the clamp is released.
To release the clamp, turn knob counterclockwise as far
as it will go until the white mark on the knob is located at
the top.
STRAIGHT STITCHING
General Purpose Presser Foot, Throat Plate and Feed
Dog are used for all utility sewing and where there is
occasion to alternate between straight and zigzag stitching
in the sewing procedure.
Straight Stitch Presser Foot, Throat Plate and Feed Dog
are used for straight stitching only. These Fittings are suited
especially for stitching delicate or spongy fabrics, syn-
thetics, knits and tricot. Additional maneuverability is also
obtained when sewing curved and shaped seams, precision
edging and hard-to-reach areas.
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