In the Hussong type machines hanks needs to be hung on removable sticks, from the underside of the dyeing vessel lid. The lid is then vertically lowered onto the dyeing vessel. The dyeing vessel consists of a simple box that has a perforated false bottom. A reversible impeller, that is placed vertically in a weir chamber at one corner of the machine is used for circulating liquour. Heat is generated by closed steam coils located beneath the false bottom. While on the smaller machines heat is generated by live steam injection.