222年間にこれほど退化した「特許図面」の歴史：ギャラリー « WIRED.jp
Make a water wheel - perhaps it would work with marbles in a marble run too
漂白剤スプレー,漂白剤衣類,Diyの衣類,Diyの服,シャツ,衣類,Bleach Tape,Bleach Work,Stamp Bleach
Voronoi diagram / sevensixfive sketchbook
In 1830, Sewall Short and Noah Bradford submitted a patent application for the submarine explorer. In their application, they claimed that they had created a water-tight suit, different from any diving apparatus known before.
天動説視実等象儀 引札 明治十年内国勧業博覧会陳列、木版墨摺 明治12年 25x33cm 明治十二年五月器械発起 版主 神奈川県下 藤田 古梅
June 20, 1840: Samuel Morse receives the patent for the telegraph. Morse Telegraph Apparatus, illustration from "Eighty Years Progress of the United States," 1864; NYHS Image #78552d.
a popular history of british sea-weeds. 1851
technical drawing of windmills