118 INSTRUMENT FOK COUlfTING THE LIFTS FROM A MINI. 



Inftrument for gaged from the wheel, nor the fpring; nor can the number on 

 liftTfio^ t* ^^^^ '"^^^ ^^ altered without firft opening the box. This latter 

 mine. can be made of iron, if found necelTary, with a good lock to 



it ; otherwife, the ftrefs is fo very little, that even one of wood, 

 made in all refpeds like the model, would anfwer, if it could 

 be fecured from the efFeds of the weather. In the machine 

 likewife, reprefented by the drawing, nothing can be altered, 

 except the box be firft opened. This machine is faftened to 

 the beam in which the upper gudgeon turns. To effeft this, the 

 bottom of the box muft have two projefting ends with holes in 

 them, larger than neccflary to receive a ftrong pin or rivet j 

 which pins muft have large heads, fo that when properly driven 

 or riveted in, the box may be able to give way to any remain-, 

 ing inaccuracy in the lower parts of the gurigeon, as I before 

 obferved. Thofe machines for hand windlafles, like the model, 

 are fixed to the fide of the poft into which one of the gudgeons 

 . -turns ; but perhaps tiiefe might likewife be contrived fo, that 

 the gudgeon with the endlefs fcrew may be a piece by itfelf, 

 9tlached only to the windlafs by a fquare, or otherwife, as is 

 pften pra6lifed in other machineries, fuch as cotton.-mills, ${c, 

 I am. Sir, 



Your obedient Servant, 



JOHN ANTIS. 

 Fulnech, Mai/\8, 1802. 

 Charles Taylor, Efq. 



JJeferenc^ to the Model fent by Mr. Ak ris to the Society* 



Plate Vll. Fig, 1. A. The roller, with an endlefs fcrew, 

 to be the fize of the gudgeon of a hand windlafs. 



13. The firft wheel, of forty teeth, with a brlls catch C. 

 It may be moved backwards or forwards by the endlefs fcrew. 



D. A ratchet wheel with fifty teeth, which, when the wheel 

 B is put in motion one way, the catch will Hide over the teeth 

 of it ; but, on turning it the other way, the catch will drop 

 into and forward this wheel one tooth, in which fituation it is 

 prevented from returning by the fpring E, placed on the fide 

 of the box which holds a tooth on the fide of the wheel. 



F. A fmall pinion of four teeth, on the back part of the#' 

 axle of the wheel D. This pinion moves a large wheel on tlie 

 other fide of the bon. 



