Embedded Figure Camouflage

Drawings for US Patent No. 2,670,961, by Charles E. Winters (1954)

Shown here are the drawings for a patented game-like invention called "Puzzle," devised by Charles E. Winters of Crawfordsville IN. US Patent No. 2,670,961 (1954). It's essentially about the detection of embedded figures (or camouflaged figures), in which a shape is hard to see because it is subdivided by other shapes (called figure disruption or dazzle) and/or because its context (or background) is distracting and complex. As seen in the lower drawing, in this game, simple drawings of animals become a challenge to detect when a larger complex drawing (printed on a transparent sheet acetate) is superimposed on them.