﻿1080 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  [106] 
  

  

  CLAIM. 
  

  

  "The 
  combination 
  of 
  the 
  case 
  or 
  cylinder 
  B 
  with 
  the 
  preserving-can 
  

   A, 
  when 
  applied 
  as 
  shown 
  in 
  the 
  Fig. 
  0, 
  substantially 
  as 
  described," 
  

  

  No. 
  299710. 
  

  

  (Julius 
  Wolff, 
  Now 
  York, 
  N. 
  Y. 
  ; 
  patented 
  June 
  3, 
  1834; 
  sardine-can. 
  See 
  Plate 
  

  

  CXXXV.) 
  

  

  A 
  sardine-can 
  having- 
  its 
  top 
  or 
  bottom, 
  or 
  both, 
  concave. 
  In 
  can- 
  

   ning 
  sardines 
  as 
  heretofore 
  practiced 
  the 
  cans 
  are 
  made 
  with 
  flat 
  or 
  

   slightly 
  convexed 
  tops 
  and 
  bottoms. 
  The 
  fish 
  are 
  packed 
  into 
  the 
  cans 
  

   and 
  oil 
  is 
  poured 
  over 
  them 
  until 
  the 
  body 
  of 
  the 
  can 
  is 
  filled 
  with 
  oil. 
  

   The 
  tops 
  of 
  the 
  cans 
  are 
  then 
  soldered 
  on, 
  and 
  heat 
  is 
  applied 
  by 
  water 
  

   or 
  steam 
  a 
  sufficient 
  time 
  to 
  preserve 
  the 
  fish. 
  The 
  cans 
  are 
  then 
  re- 
  

   moved, 
  and 
  if 
  the 
  soldering 
  was 
  properly 
  done, 
  the 
  top 
  and 
  bottom 
  of 
  

   the 
  cans 
  are 
  convex 
  from 
  the 
  expansion 
  of 
  the 
  inclosed 
  air 
  by 
  the 
  heat. 
  

   The 
  cans 
  are 
  then 
  punched 
  to 
  allow 
  the 
  air 
  to 
  escape, 
  and 
  the 
  puncture 
  

   is 
  thereupon 
  closed 
  with 
  solder. 
  In 
  this 
  process, 
  when 
  the 
  cans 
  are 
  

   punched 
  to 
  allow 
  the 
  air 
  to 
  escape, 
  the 
  escaping 
  air 
  carries 
  a 
  portion 
  of 
  

   the 
  oil 
  with 
  it, 
  so 
  that 
  when 
  the 
  cans 
  are 
  opened 
  the 
  fish 
  are 
  found 
  to 
  

   be 
  only 
  partly 
  covered 
  with 
  oil, 
  and 
  consequently 
  not 
  in 
  a 
  state 
  of 
  per- 
  

   fect 
  preservation. 
  To 
  avoid 
  this 
  the 
  inventor 
  here 
  makes 
  a 
  sardine-can 
  

   with 
  the 
  top 
  or 
  bottom, 
  or 
  both, 
  concave. 
  The 
  depression 
  of 
  the 
  middle 
  

   parts 
  of 
  the 
  tops 
  of 
  the 
  cans 
  then 
  causes 
  the 
  air 
  in 
  the 
  cans 
  to 
  collect 
  

   around 
  the 
  edges 
  of 
  the 
  tops, 
  and 
  the 
  heat 
  of 
  the 
  soldering-tool 
  heats 
  

   the 
  air 
  and 
  oil 
  along 
  the 
  edges, 
  and 
  causes 
  the 
  air 
  to 
  expand 
  and 
  escape 
  

   in 
  front 
  of 
  it 
  as 
  it 
  passes 
  along 
  the 
  edges, 
  so 
  that 
  when 
  the 
  soldering 
  

   is 
  completed 
  the, 
  air 
  will 
  be 
  sufficiently 
  expelled. 
  The 
  filled 
  cans 
  are 
  

   then 
  subjected 
  to 
  heat 
  in 
  the 
  ordinary 
  manner, 
  and 
  if 
  the 
  soldering 
  

   has 
  been 
  properly 
  done, 
  the 
  expansion 
  of 
  the 
  small 
  quantity 
  o'f 
  air 
  left 
  

   in 
  the 
  cans 
  will 
  have 
  expanded 
  the 
  concaved 
  top 
  and 
  bottoms 
  into 
  an 
  

   approximately 
  level 
  or 
  horizontal 
  position, 
  and 
  the 
  cans 
  are 
  ready 
  to 
  be 
  

   cooled 
  and 
  stored 
  for 
  market. 
  In 
  case 
  the 
  tops 
  and 
  bottoms 
  of 
  the 
  

   cans, 
  when 
  the 
  boiling 
  operation 
  has 
  been 
  completed, 
  have 
  not 
  been 
  

   expanded 
  into 
  level 
  positions, 
  it 
  shows 
  that 
  the 
  soldering 
  was 
  not 
  prop- 
  

   erly 
  done, 
  and 
  that 
  the 
  inclosed 
  air 
  and 
  part 
  of 
  the 
  oil 
  have 
  escaped 
  

   during 
  the 
  boiling 
  operation. 
  Such 
  cans 
  have 
  to 
  be 
  resoldered, 
  punched 
  

   in 
  two 
  or 
  more 
  places 
  and 
  placed 
  in 
  hot 
  oil 
  until 
  they 
  are 
  again 
  filled 
  

   with 
  oil. 
  The 
  punctures 
  are 
  then 
  filled 
  with 
  solder 
  and 
  the 
  sardines 
  

   are 
  marketed 
  as 
  seconds. 
  

  

  CLAIMS." 
  

  

  "1. 
  A 
  sardine-can 
  having 
  its 
  top 
  or 
  bottom 
  concaved 
  and 
  secured 
  

   within 
  the 
  body 
  of 
  the 
  can, 
  as 
  and 
  for 
  the 
  purpose 
  set 
  forth. 
  

  

  "2. 
  In 
  a 
  sardine-can, 
  the 
  combination, 
  with 
  the 
  body 
  A, 
  provided 
  

  

  