PEEPAKATION AND USE. 



243 



J. E. A. Andrew, is shown in Figs. 24 (side view), 

 25 (transverse section), and 26 (plan). The table a, 



Fig. 24. 



Fig. 25. 



rib n, and sliding-rest b, and two lower segment-rollers c d, 

 are constructed as usual ; but the axles of the segment- 

 rollers revolve in bearings gh, bolted to the flanges 



B 2 



