A 1927 technical report by engineer Wilhelm Heinrich on small-scale spinning machinery and plant layouts for cottage industry, cooperatives and small enterprises. It describes the combined ring-spinning carding machine (Model N.T.) made by the Norddeutsche Textilmaschinenfabrik of Pollnow, covering its carding, web-dividing, drafting and ring-spinning stages, plus output figures, drive options and a larger version. One illustration shows the machine.