﻿[121] 
  PATENTS 
  ISSUED 
  RELATING 
  TO 
  FISH 
  AND 
  FISHERIES. 
  1095 
  

  

  receiver 
  or 
  collector, 
  which 
  together 
  constitute 
  a 
  complete 
  automatic 
  

   apparatus, 
  but 
  there 
  may 
  be 
  a 
  series. 
  Both 
  the 
  hatching-jar 
  and 
  the 
  

   collector 
  have 
  two 
  glass 
  tubes. 
  Of 
  these 
  tubes, 
  one 
  in 
  the 
  hatching- 
  

   jar 
  connects 
  by 
  a 
  rubber 
  tube 
  with 
  the 
  water-supply, 
  and 
  extends 
  to 
  

   nearly 
  the 
  bottom 
  of 
  the 
  jar, 
  beiug 
  held 
  in 
  a 
  tubular 
  sleeve 
  in 
  the 
  cover 
  

   of 
  the 
  jar, 
  axially, 
  but 
  vertically 
  adjustable 
  to 
  regulate 
  and 
  control 
  the 
  

   agitation 
  of 
  eggs 
  and 
  flow 
  of 
  water 
  according 
  to 
  the 
  necessities 
  of 
  the 
  

   case, 
  there 
  being 
  two 
  classes 
  of 
  eggs 
  to 
  be 
  operated 
  upon, 
  namely, 
  those 
  

   which 
  are 
  normally 
  of 
  greater, 
  and 
  those 
  which 
  are 
  normally 
  of 
  less 
  

   specific 
  gravity 
  than 
  water. 
  In 
  the 
  case 
  of 
  heavy 
  eggs 
  (as 
  of 
  the 
  shad 
  

   and 
  the 
  white 
  fish), 
  the 
  central 
  tube 
  is 
  pushed 
  down 
  to 
  introduce 
  a 
  cur- 
  

   cent 
  of 
  water 
  at 
  the 
  bottom 
  of 
  the 
  vessel, 
  which 
  buoys 
  up 
  the 
  eggs, 
  and 
  

   filters 
  through 
  the 
  mass, 
  the 
  dead 
  eggs 
  being, 
  by 
  degrees, 
  carried 
  to 
  

   the 
  surface 
  and 
  removed 
  as 
  above 
  described. 
  As 
  shown 
  in 
  the 
  draw- 
  

   ings, 
  the 
  apparatus 
  is 
  arranged 
  for 
  operation 
  upon 
  eggs 
  which 
  are 
  nor- 
  

   mally 
  heavier 
  than 
  water. 
  In 
  the 
  case 
  of 
  eggs 
  that 
  are 
  normally 
  lighter 
  

   than 
  water 
  (as 
  of 
  salt-water 
  fish, 
  such 
  as 
  cod 
  and 
  mackerel), 
  the 
  tube 
  is 
  

   drawn 
  up 
  to 
  introduce 
  the 
  current 
  of 
  water 
  at 
  the 
  upper 
  part 
  of 
  the 
  

   vessel 
  which 
  passes 
  out 
  at 
  the 
  bottom, 
  thus 
  reversing 
  the 
  direction 
  of 
  

   the 
  current. 
  The 
  tube 
  is 
  rendered 
  water-tight 
  in 
  the 
  sleeve 
  by 
  small 
  

   stuffiug-boxes 
  at 
  the 
  top 
  and 
  bottom, 
  which 
  by 
  fractional 
  contact 
  hold 
  

   the 
  tube 
  to 
  its 
  adjustments 
  against 
  the 
  pressure 
  of 
  the 
  water. 
  The 
  

   other 
  tube 
  of 
  the 
  hatching-jar 
  is 
  the 
  outlet 
  tube 
  for 
  the 
  water, 
  the 
  small 
  

   fry, 
  and 
  the 
  bad 
  eggs 
  when 
  it 
  is 
  required 
  to 
  remove 
  the 
  latter. 
  This 
  

   tube 
  is 
  in 
  a 
  short 
  sleeve 
  in 
  the 
  cover, 
  and 
  which 
  is 
  also 
  provided 
  with 
  a 
  

   stuffing-box 
  to 
  render 
  it 
  tight, 
  but 
  which 
  permits 
  this 
  tube 
  to 
  be 
  de- 
  

   flected. 
  In 
  constructing 
  the 
  sleeve 
  to 
  permit 
  this 
  deflection, 
  the 
  sleeve 
  

   and 
  also 
  the 
  removable 
  thimble 
  of 
  the 
  stuffing-box 
  are 
  made 
  of 
  a 
  larger 
  

   diameter 
  than 
  the 
  tube, 
  and 
  the 
  packing 
  in 
  the 
  stuffing-box 
  is 
  in 
  the 
  

   nature 
  of 
  a 
  round 
  rubber 
  ring 
  confined 
  between 
  the 
  thimble 
  and 
  sleeve, 
  

   and 
  large 
  enough 
  to 
  act 
  as 
  a 
  fulcrum 
  for 
  the 
  tube 
  when 
  it 
  is 
  to 
  be 
  de- 
  

   flected. 
  The 
  cover 
  to 
  the 
  jar 
  is 
  held 
  down 
  by 
  a 
  screw-ring 
  upon 
  a 
  gum 
  

   gasket 
  to 
  form 
  a 
  perfectly 
  tight 
  closed 
  jar. 
  The 
  receiving 
  jar 
  is 
  pro- 
  

   vided 
  with 
  a 
  similar 
  tight 
  cover, 
  and 
  has 
  similar 
  tube 
  connections 
  for 
  

   its 
  tubes, 
  one 
  of 
  which 
  tubes 
  is 
  connected 
  to 
  a 
  tube 
  of 
  jar 
  A 
  by 
  a 
  rub- 
  

   ber 
  pipe. 
  The 
  other 
  is 
  the 
  discharge-pipe 
  and 
  opens 
  into 
  any 
  suitable 
  

   receiver 
  for 
  the 
  waste 
  water. 
  Over 
  the 
  lower 
  end 
  of 
  the 
  discharge-tube 
  

   is 
  a 
  large 
  filtering 
  bag 
  distended 
  over 
  a 
  cage, 
  the 
  object 
  of 
  which 
  is 
  to 
  

   secure 
  a 
  discharge 
  from 
  this 
  closed 
  jar 
  commensurate 
  with 
  the 
  inflow 
  

   without 
  creating 
  a 
  violent 
  suction 
  through 
  the 
  filter, 
  which 
  would 
  injure 
  

   the 
  young 
  and 
  delicate 
  fish. 
  The 
  jars 
  are 
  preferably 
  of 
  glass. 
  They 
  

   are 
  also 
  of 
  a 
  cylindrical 
  shape, 
  with 
  rounded 
  or 
  oval 
  internal 
  ends. 
  In 
  

   practice 
  for 
  heavy 
  eggs, 
  as 
  shown, 
  they 
  are 
  filled 
  about 
  three-fourths 
  

   full 
  of 
  eggs 
  that 
  have 
  been 
  vitalized 
  with 
  the 
  milt 
  of 
  the 
  male, 
  and 
  the 
  

   tubes 
  are 
  then 
  adjusted 
  to 
  about 
  the 
  position 
  shown. 
  The 
  constant 
  flow 
  

   of 
  water 
  under 
  pressure 
  into 
  and 
  out 
  of 
  the 
  closed 
  jar 
  now 
  gives 
  there- 
  

  

  