Am.  Jour.  Pharm.| 
April,  1891.  J 
Improvement 
Liebig  s  Condenser. 
185 
AN  IMPROVEMENT  IN  LIEBIG'S  CONDENSER. 
By  George  M.  Beringer,  Ph.G. 
Every  one  who  has  worked  with  the  ordinary  Liebig's  condenser 
is  familiar  with  the  difficulty  of  making  a  water-tight  connection 
between  the  glass  tube  and  the  cork  and  also  between  the  outer 
metal  tube  and  the  cork.  In  the  condenser  shown  the  cork  is 
replaced  by  a  stuffing-box  like  arrangement  at  each  end. 
The  condenser  consists  of  the  usual  metal  tube  A  with  inlet  and 
outlet  tubes  for  the  water  supply.  To  each  end  of  the  tube  is  sol- 
dered a  heavy  metal  reducing  shoulder  B  to  which  is  attached  a  short 
metal  tube  C,  the  diameter  of  which  is  slightly  larger  than  the  con- 
densing tube  of  glass  used.  A  screw  thread  is  cut  on  the  outside 
of  this  tube  and  the  metal  cap  D  is  cut  with  corresponding  thread. 
JL 
llifili 
-  V, 
wmm 
LnJ 
It  has  a  small  shoulder  or  ledge  at  the  head  where  the  pressure  is 
applied  to  the  packing.    Fig.  Ill,  S. 
The  glass  tube  being  placed  in  position,  a  layer  of  packing  is 
