At the risk of bringing an American influence into the discussion, try these two references under Popular Mechanics magazine in Google Books:
Oct 1955 – Metal Shaper for Your Shop – pp227-231, an article about building a manual 3inch shaper by S.S. Miner
Nov 1928 – A 6 inch Bench Shaper – pp869-871 – a motor driven shaper by J.V. Romig
Edward