Greene wanted to see if it was as strong as Stillson claimed and encouraged him to attack a pipe until either the metal broke or the wrench did. After he successfully tore into a 1.25-inch pipe ...

This article was originally published with the title “Screw-driver Wrench and Tap Wrench” in Scientific American Magazine Vol. 105 No. 20 (November 1911), p. 433 doi:10.1038 ...

This article was originally published with the title “A Leather Cup Die, Combination Pipe and Monkey Wrench, and more” in Scientific American Magazine Vol. 105 No. 13 (September 1911), p. 276 ...