Patent GB2013092 reveals the intricate world inside a seemingly simple bath toy.
This wind-up duck uses an elaborate system of sliding plates, cams & springs to create lifelike swimming motions - head dipping, tail wagging, & water spouting included.
ALT "An image of water with patent drawing of GB2013092 on it. Image reads patent GB2013092, Title: a toy aquatic creature, Owner: Masudaya Toy Company Limited. Filing date: 22 February 1979. "