THE WHIRLING- TABLE. 



133 



l>l> is screwed. The iron plate carries a rectangular 

 frame r, which is made of one piece with the plate ; an 

 iron shaft passes through a hole in the board B, through 

 the plate and through the frames; this axle carries 

 at the top a circular plate of wood P, and within the frame 

 a small driving pulley. Fig. 96 shows a section of this 

 portion of the apparatus, on a larger scale. B B, Z Z, P, 

 y>/>, r, denote the same parts as in fig. 95. A A is the 

 shaft, w the driving pulley, fixed to the axle by the pin s, 



FIG. 96 (| real size}. 



s< > that one cannot move without the other. The plate 

 P P is secured by three screws to a small brass plate w, 

 which is soldered to the shaft. In the lower end of the 

 axle there are two holes, one passing horizontally through 

 the axle, the other, which is rather narrow, reaches ver- 

 tically from the lower extremity to the horizontal hole. 

 A hole is also bored into the upper end, into which a 

 screw fits for the purpose of fixing objects to the plate. 

 An endless cord passes round the driving-pulley and the 



