344 Description of a self performing barrel organ. [Oct, 



shown. The open space below the bellows K is appro- 

 priated to receive the barrels of which it is capable of 

 holding eight. — As the weights E F cannot of course 

 be seen when the outward case is put on, and as over- 

 winding the weights might break the lines, two bells O, 

 P, are struck when the weights have risen to the proper 

 height, giving notice to cease winding. — N, N, is the 

 key frame, but as it is the same as in other organs, and 

 as my intention is not to describe the whole instrument 

 in all its parts, but only those portions and particular 

 movements which are not generally understood, or 

 which possess some ingenuity or novelty, I shall now 

 proceed to details. 



4. — Figure 3 represents the chief train of wheel work 

 of C, figure 1, working the organ barrel, drawn to a scale 

 of J of the real size. No. 1 is the barrel on which the 

 line G in figure 1 is wound ; — 2 is the ratchet wheel with 

 its stop X attached to this barrel ; 3 is a wheel of 100 

 teeth being the first of the train ; it works into No. 4 a 

 wheel of 23 teeth ; on the axis of No. 4 there are two 

 other wheels, one of the same size as No. 4, and another 

 No. 8 of 72 teeth ; the one of the same size as No. 4 

 works into No. 5 a wheel of 100 teeth which drives the 

 organ barrel M, figure 1 as hereafter shown; on the axis 

 of No. 5 the wheel No. 6 is fixed working into No. 7 

 both of which are of the same size having 60 teeth each-; 

 they work a snail wheel for moving the barrel horizon- 

 tally, as will presently be explained. — The wheel No. 8 

 of 72 teeth works into No. 9 of 14 teeth, to the axis of 

 which is attached No. 10, a wheel of 24 teeth working 

 into the worm of a clock fly, for the purpose of regula- 

 ting the time. — The fly has wings moveable on centres, 

 in order to oppose a larger or smaller surface to the air : 

 and it makes .532 revolutions^ for one revolution of the 

 barrel. 



