Trigger mittens, also know as trigger finger mittens, have been used by the American military since at least the Civil War. A clever combination of the warmth of mittens with the flexibility of gloves, these mittens have a separate index finger to allow soldiers to easily operate machinery in cold temperatures.
I made these mittens for my grandson, based on specifications from his mother. She had made him a pair similar to these, but he lost one. Since I don’t care for military associations, I have renamed this style the Notta Glove. The name is self-explanatory.
This basic pattern came from Victory Light on Ravelry. Her design needed adaptations to create the index finger but they were easily made. The original design can be found at https://www.ravelry.com/patterns/library/zen-little-fingers-and-toes-part-1-mittens
You start the normal way, with a 2×2 rib cuff in the main color. Next, with larger needles, begin the 2 x 2 stranded knitting with the 2nd color.
Use waste yarn to set up for an Afterthought thumb – I worked it over nine stitches. Continue in pattern to the top of the palm, where you divide for the 2 finger compartments. I put the outer 2/3rds of stitches on waste yarn and worked the index finger with 1/3 of the stitches. Add 2 stitches where the front and back meet between the fingers.
Put the held stitches back on the needles, continue in pattern until you reach the tip of the middle finger, and decrease down to nine stitches in the usual manner for mittens. Put held thumb stitches back on needles and knit the thumb last.
These Nottas are pretty neat and quite warm. I may make a pair for myself.