﻿[107] 
  PATENTS 
  ISSUED 
  RELATING 
  TO 
  FISH 
  AND 
  FISHERIES. 
  1081 
  

  

  with 
  the 
  offsets 
  a, 
  of 
  the 
  concave 
  top 
  B, 
  provided 
  with 
  a 
  flange 
  b 
  and 
  

   bead 
  c, 
  substantially 
  as 
  herein 
  shown 
  and 
  described." 
  

  

  No. 
  288106. 
  

  

  (Freeman 
  Payzant, 
  Lockeport, 
  Nova 
  Scotia; 
  patented 
  November 
  G, 
  1883; 
  process 
  of 
  

   and 
  apparatus 
  for 
  extracting 
  oil 
  from 
  fish 
  liver 
  and 
  blubber. 
  See 
  Plate 
  CXXXVI.) 
  

  

  The 
  furnace 
  has 
  a 
  water-jacket 
  and 
  a 
  pipe 
  for 
  conducting 
  air 
  into 
  the 
  

   furnace 
  below 
  the 
  grate; 
  the 
  pipe 
  has 
  at 
  its 
  upper 
  end 
  an 
  adjustable 
  

   hood 
  for 
  catching 
  the 
  air. 
  The 
  furnace 
  is 
  put 
  into 
  a 
  tank 
  or 
  vat 
  con- 
  

   taining 
  fish 
  livers 
  and 
  blubber. 
  The 
  oil 
  rises 
  to 
  the 
  surface, 
  and 
  the 
  

   livers 
  and 
  blubber 
  sink 
  to 
  the 
  bottom. 
  

  

  CLAIMS. 
  

  

  " 
  1. 
  The 
  method 
  herein 
  described 
  of 
  preventing 
  the 
  discoloration 
  and 
  

   injury 
  of 
  the 
  oil, 
  which 
  consists 
  in 
  interposing 
  a 
  stratum 
  of 
  water 
  be- 
  

   tween 
  the 
  oil-yielding 
  substance 
  and 
  the 
  furnace, 
  substantially 
  as 
  de- 
  

   scribed, 
  and 
  for 
  the 
  purpose 
  set 
  forth. 
  

  

  " 
  2. 
  The 
  combination, 
  with 
  the 
  oil-holding 
  receptacle, 
  of 
  a 
  water- 
  

   jacketed 
  furnace, 
  substantially 
  as 
  shown 
  and 
  described. 
  

  

  " 
  3. 
  The 
  combination, 
  with 
  the 
  furnace 
  ABO, 
  provided 
  with 
  an 
  air- 
  

   pipe, 
  D, 
  aud 
  adapted 
  to 
  be 
  supported 
  in 
  a 
  tank, 
  of 
  the 
  water-jacket 
  F, 
  

   surrounding 
  the 
  furnace 
  and 
  extending 
  from 
  below 
  the 
  grate 
  nearly 
  to 
  

   the 
  upper 
  end 
  of 
  the 
  furnace." 
  

  

  No. 
  294940. 
  

  

  (Peter 
  C. 
  Voa;ellus, 
  Gloucester, 
  Mass. 
  ; 
  patented 
  March 
  11, 
  1884 
  ; 
  process 
  of 
  extracting 
  

   oils 
  and 
  fats 
  from 
  fish. 
  No 
  drawing.) 
  

  

  In 
  extracting 
  oil 
  from 
  fish, 
  fish-livers, 
  or 
  fish-heads 
  where 
  solvents 
  are 
  

   employed 
  as 
  the 
  extracting 
  agent, 
  to 
  obviate 
  the 
  difficulty 
  experienced 
  

   by 
  the 
  presence 
  of 
  water, 
  this 
  is 
  first 
  removed 
  by 
  subjecting 
  the 
  fish 
  

   whole 
  or 
  cut 
  up 
  and 
  raw, 
  but 
  preferably 
  while 
  being 
  heated 
  or 
  cooked, 
  

   to 
  the 
  action 
  of 
  a 
  substance, 
  such 
  as 
  plaster-of-paris, 
  which 
  will 
  absorb 
  

   the 
  water 
  without 
  taking 
  up 
  the 
  oil. 
  

  

  CLAIMS. 
  

  

  "1. 
  The 
  improved 
  process 
  of 
  extracting 
  oils 
  from 
  fish, 
  consisting 
  in 
  

   subjecting 
  the 
  fish 
  to 
  the 
  action 
  of 
  plaster-of-paris 
  or 
  some 
  similar 
  water- 
  

   absorbing 
  agent, 
  whereby 
  the 
  water 
  is 
  removed 
  therefrom, 
  and 
  then 
  

   mingling 
  the 
  fish 
  with 
  a 
  suitable 
  solvent, 
  whereby 
  the 
  oil 
  in 
  the 
  fish 
  is 
  

   dissolved, 
  substantially 
  as 
  described. 
  

  

  "2. 
  The 
  improved 
  process 
  of 
  extracting 
  oils 
  from 
  fish, 
  consisting 
  in 
  

   heating 
  the 
  fish, 
  subjecting 
  the 
  same 
  to 
  water-absorbing 
  agents, 
  aud 
  

   then 
  to 
  the 
  dissolving 
  action 
  of 
  solvents, 
  substantially 
  as 
  described. 
  

  

  