I've recently uploaded photos of The Raphael Tuck & Sons postcard factory to TuckDBs Ephemera site:
https://eph.tuckdb.org/sets/8167?st=medium We have given our best guess as to what is going on and what the equipment they are using in each photo is, but I thought I would share it here, and if anyone knows more about what is going on in the photos to please let me know and I will update the description.