JUKI
LBH-1790 Series Brochure & Specs page 4

Basting stitch mechanism is effective for the production of beautiful buttonholes.
● The basting stitch is effective on elastic materials such as knits.
Basting stitch: Since the needle thread is tucked in without fail,
it will never jut out of the buttonhole seams.
Basting stitch can be sewn by nine rounds.
Sewing settings can be easily changed.
Purl stitching Whip stitching
Purl stitching Whip stitching
(For a changeover between purl stitch
and whip stitch, threading of bobbin,
as well as the bobbin thread tension
need to be changed.)
The machine is equipped with a multiple
knife-dropping function.
● Thanks to the multiple knife-dropping function, it is no longer required
that the knife be changed at the time the buttonhole size is changed.
The number of knife dropping times can be automatically set according
to the buttonholing size in cases where the buttonhole size is frequently
changed for small-lot productions or during the cycle sewing of
buttonholes that are different in size.
● The double-acting solenoid type knife mechanism is free from the faulty
dropping/returning of the knife. In addition, the knife pressure can be
changed according to the material to be sewn.
● The knife supports sewing lengths of 41mm at the maximum. In addition,
knife mechanisms for 70mm and 120mm are optionally available.
Since the LBH-1795 is provided as standard with the 120 mm presser, it
is capable of sewing 12-mm long buttonholes. The LBH-1795 is capable
of sewing long buttonholes such as belt holes in car seats. In addition, it
is applicable to the sewing of buttonholes in men's shirts (continuous
sewing of two buttonholes and the use of two units of sewing machines),
etc.
120mm buttonhole
Single stitching Double stitching
State of first- Finished state of
round stitch double stitching
•For double stitching, the bartacking
section is skipped and only the parallel
sections are sewn twice. This prevents
any excessively tight finishes in the
bartacking section of the buttonhole.
•First- and second-round stitches can be
sewn using different stitch widths.
LBH-1795S
Without basting stitch With basting stitch
(The state in which the material is stretched in
the lengthwise direction after buttonholing)
Shorter length of bobbin thread
remaining on the material.
● The new model of the bobbin thread trimming
mechanism cuts the bobbin thread so that it leaves
a shorter length of thread on the material.
Furthermore, the machine produces bartacks at the
end of sewing, thereby preventing finished seams
from coming undone.
● With the soft-start function, the number of stitches,
as well as the sewing speed at the start of sewing
can be specified, thereby preventing the needle
thread from slipping off from the needle eyelet.
(From the first to the fifth stitches, the sewing speed
can be specified on a stitch-by-stitch basis.)
Cycle sewing and continuous sewing.
Cycle sewing
● Twenty different programs can be registered, and as many
as 15 different patterns can be stored in one program.
Continuous sewing
● The machine is able to continuously sew two or more
different patterns without requiring the work clamp foot to
be lifted. As may as 20 programs can be registered, and
six different patterns can be stored in one program.
(Related parts need to be exchanged for optional ones.)
Easy threading.
● The needle bar can be shifted to the rightmost end
position with the work clamp foot lowered.
This facilitates threading of the machine head.
Position of the needle bar
during sewing
Basting stitch
The needle bar can be shifted to
the right at the time of threading