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Textile Machinery Makers (TMM), formed by amalgamation of a number of textile machinery makers
1931 Platt Brothers, Howard and Bullough, Brooks and Doxey, Asa Lees and Co, Dobson and Barlow, Joseph Hibbert and John Hetherington and Sons sold their textile machinery making assets to Textile Machinery Makers (TMM) in return for shares. Tweedales and Smalley were initially not partners of the TMM scheme but they joined later.
1958 Merger between Platt Brothers and Co (Holdings) and J. Stone and Co (Holdings); Stones became a wholly owned subsidiary of Platts; the company name was changed to Stone-Platt Industries. The constituent companies of TMM continued to trade under their separate names as the Textile Machinery Division of Stone-Platt Industries.