Norman Grey Clark quickly established himself in business and prospered in the growing post-war economy, such that he was able to survive recession and war during the 1930’s and 1940’s. John Boyd Clark and Norman Kerr Clark returned from active service in World War 2 and joined their father’s business. They worked alongside him until his death in 1951.
Following the death of Norman Grey Clark, John B Clark and Norman K Clark incorporated the business as Norman G. Clark Pty. Ltd. and diversified into the manufacture of textile machinery and weaving reeds. During the 1950’s they also became Australian agents for Godfrey L. Cabot Inc. of Boston, Massachusetts, W A Scholten of Holland and ZBF of Switzerland – three very important and enduring relationships in the history of the company.