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
K-tool striking with the flat side of the axe or maul. The halligan is then inserted into the flange and used to pry the K-tool off the door, thereby pulling the entire key cylinder out. The bolt is then retracted from the inside of the cylinder hole using a turning tool, such as a screwdriver. Some cylinder locks include additional shields (outside and internally) that will make this type of entry more difficult and time-consuming, and there may be additional (non-cylinder) locks to deal with. The K-tool can be used on most styles of door, although it is often faster to