lock stitch

Sewing awls are useful for making lock stitches.

The machines pictured employ a transverse boat shuttle mechanism forming a lock stitch.

The combat wool, khaki, and paratrooper trousers all did not have adequate locking stitches in the crotch.

a shuttle operating beneath the cloth to form the lock stitch, and

Easy convenience features include memorized needle up/down, speed control slider, locking stitch button, and easy reverse.

Sewing machines (lock stitch only) with heads of a weight not exceeding 16kg without motor or 17kg with motor

It formed a lock stitch by means of a curved needle on a vibrating arm above the cloth plate, and a reciprocating two-pointed vibrating shuttle.

As the needle is pushed through the material, the extra thread from the first stitch is then threaded through the loops of successive stitches creating a lock stitch.

The running or continuous stitch is quicker but risks failing if the suture is cut in just one place; the continuous locking stitch is in some ways a more secure version.