﻿LOBSTEK 
  AND 
  OLAM 
  INVESTIGATIONS. 
  161 
  

  

  Size 
  and 
  shaj^e 
  of 
  hag. 
  — 
  From 
  this 
  material 
  was 
  made 
  a 
  cylindrical 
  

   bag", 
  a 
  little 
  more 
  than 
  3 
  feet 
  in 
  diameter 
  and 
  40 
  inches 
  deep, 
  the 
  latter 
  

   being 
  the 
  width 
  of 
  the 
  goods 
  as 
  it 
  comes 
  from 
  the 
  factory. 
  By 
  making 
  

   a 
  sack 
  this 
  size, 
  it 
  was 
  necessary 
  to 
  have 
  only 
  two 
  seams, 
  one 
  up 
  the 
  

   side, 
  the 
  other 
  around 
  the 
  bottom 
  of 
  the 
  bag. 
  This 
  did 
  away 
  with 
  the 
  

   pockets 
  and 
  corners 
  which 
  were 
  so 
  troublesome 
  in 
  the 
  square 
  bags 
  the 
  

   year 
  before. 
  Along 
  the 
  bottom 
  seam 
  on 
  the 
  outside 
  of 
  the 
  bag 
  was 
  

   sewed 
  a 
  piece 
  of 
  drilling 
  4 
  inches 
  wide, 
  and 
  this 
  was 
  turned 
  over 
  a 
  

   wooden 
  hoop 
  (child's 
  rolling 
  hoop), 
  which 
  was 
  a 
  little 
  greater 
  in 
  

   diameter 
  than 
  the 
  diameter 
  of 
  the 
  bag. 
  The 
  hoop 
  kept 
  the 
  bottom 
  

   taut, 
  and 
  also 
  furnished 
  a 
  strong 
  attachment 
  for 
  the 
  ropes 
  necessary 
  

   to 
  hold 
  the 
  bag 
  in 
  place. 
  In 
  a 
  like 
  manner 
  another 
  hoop 
  kept 
  the 
  

   mouth 
  of 
  the 
  bag 
  open. 
  

  

  The 
  supyort 
  of 
  the 
  hag. 
  — 
  A 
  cleat 
  runs 
  lengthwise 
  on 
  the 
  inside 
  wall 
  

   of 
  each 
  pontoon 
  6 
  inches 
  above 
  the 
  water, 
  and 
  at 
  intervals 
  of 
  4 
  feet 
  

   on 
  the 
  cleats 
  2 
  by 
  6 
  inch 
  planks 
  were 
  laid 
  across 
  the 
  well 
  and 
  securel}'^ 
  

   fastened. 
  To 
  the 
  under 
  side 
  of 
  each 
  plank 
  were 
  nailed 
  three 
  posts 
  4 
  

   fet^t 
  long, 
  one 
  at 
  each 
  end 
  and 
  one 
  in 
  the 
  middle 
  (see 
  diagram). 
  To 
  

   make 
  the 
  frame 
  still 
  stronger, 
  the 
  submerged 
  free 
  ends 
  of 
  the 
  posts 
  

   hanging 
  from 
  consecutive 
  planks 
  were 
  joined 
  together 
  by 
  scantling 
  

   pieces. 
  Brass 
  screw 
  eyes 
  were 
  fixed 
  in 
  the 
  bottom 
  of 
  each 
  post. 
  

  

  The 
  bag 
  was 
  held 
  in 
  the 
  frame 
  just 
  as 
  the 
  bowl 
  or 
  pocket 
  of 
  a 
  fish 
  

   pound 
  is 
  secured. 
  The 
  top 
  was 
  fastened 
  with 
  strings 
  to 
  the 
  planks 
  

   above 
  (see 
  diagram). 
  The 
  bottom 
  was 
  drawn 
  down 
  and 
  the 
  sides 
  of 
  

   the 
  bag 
  stretched 
  by 
  means 
  of 
  "down-hauls", 
  or 
  ropes, 
  which 
  roved 
  

   through 
  the 
  screw 
  eyes 
  in 
  the 
  post. 
  In 
  this 
  manner 
  the 
  bag 
  was 
  held 
  

   so 
  securely 
  that 
  there 
  was 
  little 
  danger 
  of 
  the 
  wind 
  or 
  tide 
  carrying 
  

   the 
  cloth 
  into 
  the 
  propeller, 
  which 
  was 
  suspended 
  in 
  it. 
  x\t 
  the 
  same 
  

   time 
  it 
  was 
  a 
  very 
  simple 
  matter 
  to 
  remove 
  the 
  bag 
  whenever 
  desired. 
  

  

  (b) 
  the 
  stirring 
  MECHANISM. 
  

  

  To 
  keep 
  the 
  fry 
  from 
  settling 
  to 
  the 
  bottom 
  of 
  the 
  bag, 
  a 
  simple 
  

   two-bladed 
  fan, 
  similar 
  to 
  those 
  so 
  often 
  seen 
  in 
  restaurants 
  for 
  circu- 
  

   lating 
  air, 
  was 
  suspended 
  in 
  the 
  bag 
  and 
  revolved 
  slowly. 
  The 
  blades, 
  

   F, 
  of 
  the 
  fan 
  (see 
  diagram) 
  were 
  14 
  inches 
  long 
  and 
  5 
  inches 
  wide, 
  made 
  

   of 
  cypress, 
  and 
  screwed 
  firmly 
  to 
  a 
  piece 
  of 
  maple, 
  G, 
  one 
  end 
  of 
  which 
  

   fitted 
  snugly 
  into 
  the 
  f 
  -inch 
  tee, 
  H. 
  The 
  blades 
  were 
  then 
  set 
  at 
  angles 
  

   and 
  opposite 
  each 
  other. 
  The 
  shaft 
  of 
  the 
  fan 
  was 
  made 
  of 
  two 
  pieces 
  

   of 
  galvanized 
  gas 
  pipe 
  3 
  feet 
  long 
  and 
  of 
  different 
  sizes. 
  One 
  end 
  of 
  

   the 
  lower 
  half 
  (f 
  -inch 
  pipe) 
  was 
  screwed 
  into 
  the 
  tee 
  and 
  the 
  other 
  was 
  

   joined 
  to 
  the 
  upper 
  half 
  (f-inch 
  pipe) 
  by 
  a 
  reducing 
  coupling. 
  The 
  

   whole 
  was 
  then 
  suspended 
  in 
  the 
  bag 
  by 
  means 
  of 
  some 
  2 
  by 
  3 
  inch 
  

   pieces, 
  as 
  shown 
  in 
  the 
  diagram, 
  the 
  reducing 
  coupling 
  serving 
  as 
  the 
  

   bearing 
  for 
  the 
  shaft. 
  To 
  make 
  the 
  fan 
  turn 
  more 
  easily, 
  an 
  iron 
  

  

  F. 
  C. 
  1903 
  11 
  

  

  