346 IMWIOTED CLOCK, 



IL 



Descrtplton of an Eight^duy Clock, Kith an improved 

 Striking Part, bif Mr, Henry Waud, of Biandford^ 

 Dorsetshire *. 



I rovement ^^ striking part of this clock is so far simplified, 



and simplifica- that the whole train of wheels used in common clocks, 



tionof the together with the barrel and weight, are entirely super- 

 stnking part of ^ , ^ ' / r 



clock*. sedcd. 



The power necessary for raising the hammer is obtained 

 from the pendulum. 



A A A A, Plate X. represent the \/ront side of the 

 frame. 13, a cock in which rests the pitot of the pallet 

 arbor. C, a brass arm firmly fixed on the same. D, the 

 gathering pallet, and E, a tliin plate of brass, both 

 rivetted on the same collet, which turns on a small stud 

 fixed in the arm C; this brass plate has two notches in 

 it, at ab, in which acts a slender spring F, fastened to 

 the collet of the arm C, by a small screw, and serves to 

 keep the gathering pallet in its proper position. G, the 

 cock of the hammer-bar. H, the hammer-tail, which 

 acts also as a hook in the teeth of the rack. I, a brass 

 arm, or rather a lever, which lies behind the minute- 

 wheel N, and is fixed with the hammer-tail to the ham- 

 mer-bar by means of a pin. K, the flirt. M, the rack. 

 N, the minute wheel. O, the hour wheel. The bridge 

 and snail are the same as in a common clock. 



The operation of this work is as follows. A pin is 

 fixed in the back of the minute wheel N, and as it re- 

 volves, raises the lever I, by which the hammer-tail H is 

 lifted out of the rack, the rack is then at liberty to fall ; 

 the lever I, by bearing against the pin, returns gradually, 

 and prevents the hammer from striking the bell. 



Before the pin has quitted the lever I, another pin in 

 the front side of the same wheel begins to lift the flirt ; 



♦ ♦ Communicated to the Society ol Arts. Sec their Vol. XXIII, 



when 



