594 Messrs. Miles Walker and W. Witcomb Stainer on the 

 Fig. 2. 



A. Flywheel of cast steel. 



B. Suspended disk of porcelain. 



C. Lower windage screen of wood. 



D. Upper windage screen of wood. 



E. Inner screen of sheet steel. 



F. Outer screen of sheet steel. 



G. Spindle of fibre carrying por- 



celain disk. 

 H. German-silver rod for adjusting 



suspension to centre. 

 I. Mirror attached to disk. 

 J. Bifilar suspension. 

 K. Iron tube protecting suspension. 



L. Screws for adjusting K. 



M. Wheel and wire band for turn- 

 ing torsion head at the top of 

 the building. 



N. Spring-retained ball-bearing. 



0. Over-speed cut-out. 



P. Ball- thrust bearing taking main 

 weight. 



Q. Coupling. 



E. Motor. 



S. Steel stanchion fixed in ground 

 and stayed to distant walls. 



