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
MetaCASE tool This is exactly what metaCASE technology offers. Traditional CASE tools are based on a two-level architecture: system designs are stored into a repository, whose schema is programmed and compiled into the CASE tool. This hard-coded part defines what kind of models can be made and how they can be analyzed. Most importantly, only the tool vendor can modify the method, because it is fixed in the code. MetaCASE technology removes this limitation by providing flexible methods. This is achieved by adding one level above the method level. MetaCASE tools are based on a three-level architecture: All the three levels are