dross sectior 

 Tail gatoge 

 u u iortgijtux, 



Phil. Mag. S. 5. Vol. 30. PI. IX. 



Fig- 5. 



loiigiuioluioL section/ of the vapor bath f,f, 



and tfbejjwzorneier' tuhe,,iz,,TU. Scale J^.. 



LcragiiuAirvaL section of the stuffing box 

 with iJve screw removed, showing fixe gland. 

 K,K ; and the -ring r,r. Scale %- . 



Cross sci-ixxm tJhroxigh 

 i}te ring . 



Jjort^ituobLrial section/ o 

 compressor; si wwing tfve 

 ilte steei screw S, S, T,T, 

 T'aioltet L, By, etc. Scale 



