Origin of lock stitch
Examples from the Web for lock stitch
There can be no doubt that lock-stitch machines can be run as high as 3,000.
There are two types of sewing machines in use—the chain-stitch and the lock-stitch.
Elias Howe improved the sewing machine and patented his lock-stitch machine.The Scrap Book, Volume 1, No. 5|Various
In what way do lock-stitch machines differ from chain-stitch machines?
A lock-stitch sewing machine (Figs. 132 and 133) consists of shafts and wheels which move the needle, feed plate and bobbin.