Look what I found from the friends shed during cleaning. Lot of nice pictures and information about drills, reamers, cutters, spanners, taps and dies etc, etc. 18 different catalogues from 1934-36 bound together.
Kalle, I would love to see any information on 4-jaw chucks. Happy to contribute to any costs involved as well.
I have this BSA 10-inch 4-jaw that came with a WW2 vintage lathe.