The essential difference between knotting and tatting is that the double stitch "slides" on the core thread of tatting while in knotting the core thread itself is manipulated to make a knot that is stationary.
There is sometimes a confusion between knotting and tatting shuttles has been around for years. In these public domain paintings, the ladies all have shuttles in their hands. But are they tatting shuttles?
After reading the BellaOnline.com's tatting newsletter for June 6/7, 2019 about Mary Maynard's work, Sue Hanson was prompted to share a pattern by Mary that has not been made widely public. Please enjoy
The technique of the treble tatted stitch (as I have learned from Ninetta Caruso and Muskaan) begins simply with a ring/chain in progress with a very small picot (vsp) followed by 1 double stitch From there you must read and follow the directions one step at a time.