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DIFFERENTIAL FEED
Gathered Overlock (1–2.0)
– Differential feed is a system which "stretches"
or "gathers" the fabric, when the amount of feed
of front feed dogs in relation to the rear feed
dogs is changed.
– The differential feed ratio ranges from 0.6–2.0.
Adjustment is made by means of the differential
feed dial pictured at left.
– Use of differential feed is very effective in
overedging stretch fabrics and fabrics cut on the
bias.
– Setting "1" is differential feed dial setting for
ratio 1:1.
Gathered overlock is most suited for shirring sleeves,
yokes, front and back bodices, skirt hems, etc. in
stretch fabrics as well as knits and jersey before
assembling into garment.
• To set the dierential feed dial for gathe-
ring
– Set differential feed dial above setting "1".
– Setting of adjusting dial depends on material
being sewn as well as the amount of desired
gather.
– Therefore set dial to suit the fabric and test sew
before sewing your garment.
PLEASE NOTE:
For normal overlock stitching, set differential
feed dial to graduation “1”.
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