﻿670 
  NEW 
  YOEK 
  STATE 
  MUSEUM 
  

  

  Covered 
  yards. 
  These 
  differ 
  from 
  the 
  former 
  simply 
  in 
  the 
  

   addition 
  of 
  a 
  roof. 
  This 
  roof 
  is 
  in 
  hinged 
  sections, 
  which 
  on 
  pleas- 
  

   ant 
  days 
  can 
  be 
  opened 
  upward, 
  allowing 
  the 
  sunlight 
  to 
  enter, 
  and 
  

   closed 
  to 
  prevent 
  washing 
  of 
  the 
  brick 
  in 
  case 
  of 
  rain; 
  but 
  the 
  bricks 
  

   do 
  not 
  dry 
  so 
  fast, 
  and, 
  therefore, 
  more 
  drying 
  room 
  is 
  needed 
  for 
  

   a 
  yard 
  of 
  the 
  same 
  capacity. 
  There 
  is 
  also 
  the 
  expense 
  of 
  erecting 
  

   the 
  sectional 
  covering. 
  

  

  Pallet 
  driers. 
  By 
  this 
  method 
  the 
  bricks 
  are 
  dumped 
  directly 
  

   on 
  ^' 
  pallets 
  '' 
  as 
  they 
  come 
  from 
  the 
  machine. 
  These 
  are 
  pieces 
  

   of 
  board 
  long 
  enough 
  to 
  hold 
  six 
  bricks. 
  The 
  pallets 
  are 
  set 
  on 
  

   rack 
  or 
  cribs 
  till 
  the 
  bricks 
  are 
  sufficiently 
  dry 
  to 
  be 
  set 
  up 
  in 
  

   the 
  kiln. 
  There 
  are 
  both 
  advantages 
  and 
  disadvantages 
  to 
  this 
  

   method. 
  As 
  the 
  bricks 
  can 
  not 
  be 
  spatted 
  to 
  keep 
  them 
  in 
  proper 
  

   shape, 
  they 
  must 
  be 
  firm 
  enough 
  to 
  retain 
  this 
  themselves, 
  conse- 
  

   quently 
  the 
  clay 
  must 
  be 
  molded 
  stiff 
  er, 
  and 
  to 
  do 
  this 
  we 
  must 
  have 
  

   strong 
  machinery. 
  Furthermore, 
  a 
  molding 
  sand 
  must 
  be 
  used 
  

   which 
  will 
  allow 
  the 
  brick 
  to 
  slip 
  readily 
  from 
  the 
  mold, 
  as 
  it 
  has 
  

   been 
  forced 
  in 
  tighter 
  than 
  a 
  brick 
  which 
  is 
  to 
  be 
  dried 
  on 
  an 
  open 
  

   yard. 
  There 
  is, 
  of 
  course, 
  the 
  expense 
  of 
  setting 
  up 
  the 
  racks, 
  but 
  

   on 
  the 
  other 
  hand 
  the 
  capacity 
  of 
  the 
  yard 
  is 
  increased, 
  the 
  brick, 
  

   though 
  drying 
  slower, 
  are 
  not 
  subjected 
  to 
  a 
  sudden 
  drying, 
  such 
  

   as 
  the 
  sun 
  of 
  a 
  hot 
  summer's 
  day 
  is 
  apt 
  to 
  give, 
  and, 
  therefore, 
  

   perhaps 
  warp 
  or 
  crack 
  the 
  brick. 
  The 
  brick 
  are 
  only 
  subjected 
  to 
  

   one 
  handling 
  between 
  machine 
  and 
  kiln. 
  Some 
  manufacturers 
  

   say 
  that 
  it 
  is 
  cheaper 
  to 
  make 
  bricks 
  on 
  a 
  pallet 
  yard. 
  A 
  machine 
  

   called 
  a 
  '^ 
  pallet-squarer 
  '' 
  has 
  been 
  invented 
  by 
  Mr 
  Swain 
  of 
  the 
  

   Oroton 
  brick 
  co. 
  which 
  is 
  said 
  to 
  take 
  the 
  place 
  of 
  the 
  spatting 
  tool. 
  

  

  Tunnel 
  driers. 
  With 
  this 
  method, 
  green 
  bricks 
  are 
  usually 
  piled 
  

   on 
  cars 
  and 
  are 
  run 
  into 
  heated 
  tunnels 
  to 
  dry. 
  The 
  tunnels 
  are 
  

   about 
  100 
  feet 
  long 
  and 
  constructed 
  of 
  either 
  brick, 
  iron 
  or 
  wood. 
  

   If 
  soft 
  mud 
  bricks 
  are 
  dried 
  in 
  tunnels, 
  the 
  cars 
  must 
  have 
  racks 
  

   on 
  which 
  to 
  set 
  the 
  pallets 
  bearing 
  the 
  bricks. 
  Stiff 
  mud 
  bricks 
  

   can, 
  however, 
  be 
  set 
  on 
  each 
  other, 
  setting 
  the 
  bricks 
  of 
  two 
  succes- 
  

   sive 
  courses 
  at 
  right 
  angles 
  to 
  each 
  other. 
  Each 
  car 
  carries 
  about 
  

  

  