A  NEW  PLASTER-SPREADII^a  APPARATUS. 
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firm  of  Messrs.  Macfarlane  and  Co.,  without  whose  generous  aid 
the  materials  for  the  investigation  could  not  have  been  obtained 
by  them. — Lond.  Pharm.  Journ.^  July,  1869. 
A  NEW  PLASTER-SPREADING  APPARATUS. 
Devised  By  William  Martindale. 
Dispenser  and  Teacher  of  Pharmacy  to  the  University  College  Hospital. 
This  apparatus  consists  of  a  trough  with  a  false  bottom,  in 
which  a  series  of  jets  from  a  Bunsen's  burner  are  applied  to  heat 
the  side  plates,  the  cloth  being  passed  under  these  to  be  covered 
with  a  layer  of  plaster. 
aa.  The  "  cheeks  "  or  end  of  the 
machine. 
h  and  c.    The  side-plates  of  the 
trough. 
d.  The  roll  of  cloth. 
e.  The  support  for  the  cloth  and 
plates. 
ff.  The  screws  to  regulate  the  front 
plate  h. 
gg.  The  nuts  in  which  they  work. 
hh.  The  heads  of  the  screws. 
^^.  Two  threadless  nuts. 
7c7c.  The  levers. 
U.  Two  moveable  weights, 
m.  The  spread  plaster. 
n.  A  roller  on  which  the  cloth  is 
placed. 
0  0.  Two  rests  for  this  roller. 
p.  The  heating  apparatus. 
qqq.  Its  two  branches. 
The  framework  of  the  machine,  made  of  cast-iron,  has  two 
