adjacent the rotary plate an air whirling chamber in which air injected from the air injection nozzle whirls at a high speed and an air relief chamber in communication with the air whirling chamber and having a gradually increasing volume application_number US 15746188 A description the following detailed description is of the best presently contemplated mode of carrying out the invention this description is not to be taken in a limiting sense but is made merely for the purpose of illustrating the general principles of the invention the scope of the invention is best defined by the appended claims fig5 shows an embodiment of a spinning yarn producing device for producing wool yarn in this embodiment an untwisted rove of worsted yarn that is a sliver s wound around a bobbin b first passes a draft device 5 the draft device 5 includes a pair of back rollers 1 a pair of middle rollers 3 each having an apron 2 and a pair of front rollers 4 the sliver s is then introduced into a spinning device 6 of the present invention by which means it is formed into spinning yarn y the spinning yarn y is then drawn out by a pair of delivery rollers 7 and finally taken up onto a package p which is rotated by a friction roller 8 engaging with the spinning yarn y some.