64 Conductivity of Aqueous Solutions. Part III. 



28. APPARATUS AND METHOD FOR ROTATING THE BOMB IN 



THE HEATERS. 



It was evident that for temperatures approaching the critical one, it 

 would be necessary to provide some means for effectively stirring the 

 solution in the bomb without removing the latter from the heating bath. 

 This was also desirable at all temperatures. It is accomplished by 

 rotating the bomb about a horizontal axis by the method illustrated in fig. 

 14. As will be evident from the diagram, the lower thread on the bomb 



Fig. 14. 



is screwed into a steel ring R which is eccentrically mounted on a hori- 

 zontal shaft, S lf S 2 .* The eccentricity of mounting is such that the upper- 

 most and lowermost projections from the bomb are equidistant from the 

 axis of the shaft, thus reducing to a minimum the size of the heating 

 bath required to permit of rotation. The shaft is supported at the ends 



^Because of the many joints in the steel carriage and of the temperature changes 

 to which it is subjected, it is necessary that the joints should be riveted, not screwed, 

 and that it should be made of the same kind of steel throughout, since otherwise it 

 is continually loosening up. 



