J^2$ TIME KEEPEKS. 



a liUl6 fnort-cf a right angle, <fo (hat the wheel maV have a 

 tendency to draw the fpring info it, for if flopped the other 

 way, or be)o:Kl a rijrht angle it will have a tendency to pu(h 

 the' fpring out ; in that cafe the wheel will have liberty to run ; 

 the wheel Ihould take no r^iore hold on the fpring than juft 

 fiifficient to flop it, for if more, friaibn will be increafed. 

 Thefmall return fpring (hould be as thin as poffible at the end 

 fattened to the other fpring, but at the ciuter end a little 

 thicker; the fpring (hould be planted down as clofe to the 

 wheel as to be juft free of it. The difcharging pallet^ about 

 one-third, or near one-haU" the fize of the large or main pal- 

 let, the face of it in a riglit line to the centre, the back of it 

 a little rounding and off from the centre. Great care muft 

 be ufed in taking off the edges of this difcharging piece, to 

 make it round to prevent cutting the fpring, nor can it be made 

 too thin fo it does not cut ; the end of it neareft the ballance 

 ■» ibouldbe a little more out from the centre of the ballance axis 

 than the lower part of it towards the poience, for counter^ 

 ading the natural tendency of the fpring downwards from the 

 preffure of the fcape wheel ; and that part of the fpring on 

 which the wheel refts mould be flopped a little down to give 

 the wheel a tendency to force it up, to counterad the natural 

 inclination the wheel has to draw it down by its preffure 

 on it. 

 Conftruftionof The balance is to be made of the beft fteel, and turned 

 the balance with f^Q^ j^s own centre to its proper (ize, then put it into a cru- 

 iJSr&c/°" cible with as much of the beft brafs as when melted will cover 

 it. The brafs melted will adhere to the fteel (tor if any other 

 metal is ufed by way of fokier, that watch capnot go well), 

 then' turn it to its proper thicknefs, and hollow it out fo as to 

 leave the fteel rim about the thicknefs of a repeating fpring 

 to a fmall fized repeating watch, turn the brafs to twice or 

 near three times that thicknefs of fteel, crofs it out with only 

 one arm firaight acrofs the centre, and at each end' of the 

 arm fix two fcrews oppolite to each other through the rim of 

 the balance to regulate the watch to time, the diameter of the 

 heads of thefe fcrews about equal to the thicknefs of the bar 

 lance, a little more or lefs is not material. The conipenfa- 

 tjoti weights fliould be made of the beft brafs and well ham- 

 piered, and a groove turned to let the rim of balance into it, 

 ,r. •; ■:■ .vol; ^tidihk ftK^uid be cut into fourteen equal parts by a wheel en- 

 '•i-"^^''' udLl.ua Jb list;': gine. 



