What is a Lockstitch Sewing Machine?

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Imagine a world without the sewing machine; the world would be a very different place. Similar to innovations from the past 300 years such as the automobile, cotton gin etc, the sewing machine too makes a time-consuming and laborious job into a fast and easy one. With the invention of the mechanized sewing machine, manufacturers could suddenly produce piles of high-quality clothing at minimal expense. Lockstitch machine is one of the types of sewing machine. The lockstitch uses two threads, an upper and a lower, the needle having the eye on the base. This stitch is named so because the upper and lower threads, “lock” together in the hole in the fabric through which they pass. Unlike chain stitch, lockstitch does not unravel easily and is usually used on higher quality garments.


What are the types of lockstitch machine?

There are two types of lockstitch machines based on the number of sewing needles and bobbins present, they are:

  • Single Needle Lockstitch Machine
  • Double Needle Lockstitch Machine

A double needle lockstitch machine works on the same principle as the Single needle lockstitch machine it just using two needles and two bobbins instead of single needle thus resulting in two parallel rows of lockstitch.


How does lockstitch machine works?

Lots of people choose lockstitch machine because of its essential stitch that could be utilized for a variety of purposes. The most important element of a lock-stitch mechanism is the shuttle hook and bobbin assembly. The bobbin is just a spool of thread positioned underneath the fabric. It sits in the middle of a shuttle, which is rotated by the machine's motor in synch with the motion of the needle. Then the needle pulls a loop of thread through the fabric, rises again as the feed dogs move the fabric along, and then pushes another loop in. But instead of joining the different loops together, the stitching mechanism joins them to another length of thread that unspools from the bobbin. When the needle pushes a loop through the thread, the rotary shuttle grips the loop with a hook. As the shuttle rotates, it pulls the loop around the thread coming from the bobbin. This makes for a very sturdy stitch.



What are the benefits of lockstitch machine?

  • Lockstitch machines are versatile and can be used for a variety of operations.
  • When compared to other stitch types, the lockstitch uses the least amount of thread and produces the flattest stitch.

  • It is reversible.

  • The double needle lockstitch is the tightest and most secure stitch.

  • It is the only stitch formation that can be backstitched if the ends need to be secured.

  • It is non-ravelling.

  • Lies flat on the fabric.


What are the characteristic of lockstitch machine?

Lockstitch machines comes with 2-needle, Bottom-feed, with an automatic thread trimmer. It works fast, steady and enduring especially when sewing jeans, and decorative parts. Double needle bar discrete design, easy for sewing turning, it stitches in acute angle and direct.

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