J 82 UNTWISTING MACHINE. 06t. 12. 



The reel KIv bring in this manner filled with as much yarn 

 as it is thoutht proper to put upon it at one time, is then lifted 

 out of the Hands B B, and placed upon the fimilar ftands L L, 

 another empty reel, exadlly the fame in every refpe<ft, being 

 then pu* into the Hands B B in its ftead ; and the handle and 

 winch bo'ing taken from the full reel, and put upon tlie empty 

 one, — (N. B. There is a fmall error in the drawing, the winch 

 being reprefentcd as a continuation of the axle, inlTiead of be- 

 ing a fquare Hip winch, as it ought to be,) — the operation of 

 reeling i? begun again as before. But obferve that the teeth of 

 the one wheel c catches the teeth of the fimilar wheel c of 

 the full reel; and ofcourfe, while the reel on the Hands BB 

 is turned one way, that on the ftand? LL mud be turned 

 precifcly with the fame degree of velocity in an oppofile di- 

 reftiou; fo that if the yarn be winded upon the pirns OO O 

 in proportion as it is let otfthe reel N N N, an equal quanti- 

 ty of yarn will be taken oif tlie reel N that is put upon the 

 reel K at the fame time, fo that the reel N will be entirely 

 emptied by the time that the reel K has received the quanti- 

 ty that is allotted to be put on it at one time; Now, if that 

 quantity be afcertained at the beginning, the fame length of 

 yarn mull be put upon each reel at every future filling, fo 

 as to meafure the whole quantity of yarn, merely by keeping 

 an account, of the number of foils of the reel. 



When the reel N is empty, it is then lifted from its Hand, 

 and the reel K being then full, is alfo lifted out and put into 

 its place, the two being interchanged, and thus you go on in 

 infinituvi. — (N. B. The two reels are reprefented in the fi- 

 gure as being each half full, and at that period of the opera- 

 tion when only they are precifely alike). 



The pirns t> O O are fixed upon a fpindle that turns freely 

 in an axis, and upon one end of the axis of ea&h fpindle is 

 fixed a fmall flieeve PPP: over this flieeve is taken one turn 

 of a fmall therm-band, which goes over a much larger flieeve, 

 that is not reprefented here, and upon the fame axle v/ith that 

 larger flieeve is fixed a fmall flieeve, which, v/hen this part of 

 the machinery is winded up, receives a fmall cord, in failiion, 

 the fame (though much fmaller in fize) with that of an ordi- 

 nary jack (an end view of which fmall arbour is given at Fig. 

 _3.). The weight conftantly afting, though with a gentle 

 force, turns round the arbour P, and thus gives motion to 



