tJMK KEEPEHS. 4.2"^ 



locking pallet, when the fpring EF was at reft again the head Defcrlptlon of 

 of the fcrew m, it will, by the fpriDg being preired out from ^^f^l^^^'^^"^; 

 the tooth, have flipped ofF (for the locking pallet which was ihaW time 

 before fuppofed at k, will now be at a, clear of the tooth A of P'^"* 

 ^ the balaiice-wheel) ; the wheel being now at liberty will move 

 round jit't the force fuppofed to be applied to it ; but as the 

 point i oi the lifting pallet moves on and prefles out the Tprin^, 

 the point / of the large pallet approaches towards (he point of 

 the tooth B of the balance-wheel, Co that when the fpring EF 

 is fufficiently pullied out to unlock the wheel, the point / of the 

 large pallet will be got to d, and in this pofition the point of 

 the tooth B of the balance-wheel will fall upon it (fee Fig. 2,) 

 where the tooth B is-reprefented in conlaCl with the pallet at 

 ^; at the (ame time the point of the tooth D has juft dropt off 

 from the locking pallet ni\ the force of the wheel being by this 

 jneans applied lo the lop of the pallet Id, gives an increafed 

 jnomenium to the balance, and affifts it in its motion In the 

 fame diredionj and by the continued motion of the large pallet 

 in the dire<5!ion MSK the point of the tooth B, which keeps - -■ -i 



prefling and urging it forward, moves up towards the bottoni 

 of the face of the pallet towards h, until the plain flat furfaces 

 of the tooth and pallet come into conta^ (fee Fig 3); by this 

 time the end o of the flender fpring has dropt off from the point 

 i of the lifting pallet, and the two fprings have returned agaiQ 

 into their quiefcent pofition, the fpring EF gently bearing 

 againft the head of the adjufling (crew m, and the locking 

 pallet in a pofition to receive the next tooth C of the balance- 

 wheel; (fee the patjtion of the point of the lifting pallet at i. 

 Fig. 3, alio the locking pallet at m, and the approaching tootfi 

 at C.) When the two furfaces of the tooth and pallet are thus 

 in conta*^, the greateft force of the wheel i=! exerted upon the 

 pallet, and of courfe upon the balance moving with it. The 

 tooth flill prefiing againft the face of the pallet, and the pallet 

 moving in the diredion MSK, it at laft drops off, (fee Fig 4, 

 where m reprefents the pofition of the locking pallet, C the 

 pofition of the tooth of the wheel juft before it drops upon it, 

 and / h the potition of the face of the large pallet, having the 

 point of the tooth B jull ready to leave it at I,) leaving the 

 balance at perfect liberty to move on in the fame direftion iij 

 which it was going. Juft as the point of the tooth B, which 

 bas been pr.effing the large pallet round, is ready to leave it, 

 G g 2 the 



