Daniel Chapman Stillson the J. J. Walworth Company in the Cambridgeport section of Cambridge, Massachusetts. While at the J. J. Walworth Company, he developed his pipe wrench. On September 13, 1870, he was issued his patent. Stillson was paid about $80,000 in royalties during his lifetime. He died on August 23, 1899, and is buried at Mount Auburn Cemetery in Cambridge and Watertown, Massachusetts. Daniel Chapman Stillson Daniel Chapman Stillson (March 25, 1826 - August 23, 1899) was an American inventor. He invented the modern adjustable pipe wrench. He was born March 25, 1826 in Durham, New Hampshire. He was the son of
Punch down tool Punch down tool A punch down tool, also called a punchdown tool or a krone tool (named after the Krone LSA-PLUS connector), is a small hand tool used by telecommunication and network technicians. It is used for inserting wire into insulation-displacement connectors on punch down blocks, patch panels, keystone modules, and surface mount boxes (also known as biscuit jacks). Most punch down tools are of the impact type, consisting of a handle, an internal spring mechanism, and a removable slotted blade. To use the punch down tool, a wire is pre-positioned into a slotted post on a punch block, and