Brother introduces new lockstitchers equipped with side cutter

APPAREL MAKING

Brother Industries, Ltd. has introduced a new series of lockstitch machines equipped with a side cutter: DB2-B771A single-needle needle feed lockstitcher with side cutter, DB2-B772A single-needle needle feed lockstitcher with side cutter and thread trimmer, DB2B777A single-needle straight lock-- stitcher with side cutter and DB2-- B778A single-needle straight lock-- stitcher with side cutter and thread-- trimmer.

These sewing machines can cut the material at the same time as sewing with a side cutter that boasts excellent cutting performance and durability. Ideal for sewing collars and flaps as well as the plain stitching of hems, the mode can be changed to normal sewing at a single touch, so that the machine can also be used as a standard lockstitcher when the side cutter is not in use.

The cutter drive mechanism is built into the arm, allowing more space around the needle and generally making it easier to handle the material. Scraps cut from the material are conveyed smoothly through a 29.5 mm wide duster hole to the duster chute, which keeps the top of the work table clean at all times and which lets the next operation proceed without any trouble.

The side cutter can be raised and lowered with a lever which lets the operator change easily between normal sewing and cutting while sewing.

The knife mechanism on models B771A, B772A and B778A performs stable cutting. Fine adjustments can be made to the upper knife angle using an eccentric shaft, so that attractive smooth cutting is performed at all times regardless of the type or thickness of the material. The lower knife has an ultrahard carbide tip for greater reliability.

A feature of models B771A and B772A is that uneven material feeding is prevented. Movement is transmitted directly from the horizontal feed shaft, so that the needle feed and lower feed are perfectly synchronized, thus preventing uneven material feeding.

The needle feed amount can be easily adjusted on models B771A and B772A. The needle feed augmenting mechanism allows the needle feed to be increased to up to 20% more than the lower feed amount. Adjustments are simple with the adjustment scale as it lets the operator see the current adjustment setting at a glance. This feature prevents uneven material feeding when sewing materials which easily slip, and also for thick materials.

The scissor-type thread trimmer on models B772A and B778A can cleanly cut cotton threads from #120 to #6, spun yam threads, polyester threads and nylon threads without any adjustments.

Models B772A and B778A are fitted with a damper to reduce noise from reversing during automatic backtacking.

Both models also have a dial lock lever that prevents the feed adjustment dial from moving from its set position under all sewing conditions.