﻿666 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  The 
  molded 
  brick 
  are 
  shoved 
  forward 
  on 
  the 
  table 
  by 
  the 
  charger, 
  

   are 
  placed 
  on 
  cars 
  and 
  either 
  taken 
  to 
  drying 
  chambers 
  or 
  set 
  

   directly 
  in 
  the 
  kiln. 
  The 
  green 
  brick 
  require 
  great 
  care 
  in 
  handling 
  

   as 
  they 
  are 
  very 
  tender. 
  Drying 
  must 
  be 
  done 
  very 
  slowly 
  to 
  

   prevent 
  cracking. 
  Burning 
  is 
  usually 
  done 
  in 
  down-draft 
  kilns. 
  

   The 
  manner 
  of 
  burning 
  does 
  not 
  differ 
  essentially 
  from 
  that 
  fol- 
  

   lowed 
  for 
  other 
  makes 
  of 
  brick. 
  By 
  setting 
  directly 
  in 
  the 
  kiln 
  

   without 
  previous 
  drying 
  it 
  takes 
  longer 
  tO' 
  water-smoke. 
  This 
  in 
  

   any 
  case 
  should 
  be 
  done 
  very 
  slowly 
  and 
  the 
  burning 
  should 
  not 
  be 
  

   pushed 
  till 
  water-smoking 
  is 
  entirely 
  finished. 
  It 
  is 
  calculated 
  by 
  

   some 
  that 
  one 
  sixth 
  to 
  one 
  quarter 
  more 
  fuel 
  is 
  required 
  to 
  burn 
  

   dry 
  clay 
  bricks 
  than 
  those 
  made 
  by 
  other 
  processes. 
  Burning 
  in 
  a 
  

   down-draft 
  kiln 
  is 
  more 
  expensive 
  than 
  in 
  an 
  up-draft 
  one, 
  but 
  

   a 
  much 
  greater 
  percentage 
  of 
  good 
  bricks 
  is 
  obtained. 
  It 
  is 
  conse- 
  

   quently 
  better 
  for 
  burning 
  pressed 
  brick. 
  

  

  The 
  type 
  of 
  kiln 
  used 
  varies. 
  

  

  It 
  is 
  essential 
  for 
  the 
  production 
  of 
  good 
  dry 
  pressed 
  bricks 
  that 
  

   the 
  moisture 
  contents 
  of 
  the 
  raw 
  material 
  shall 
  be 
  pretty 
  constant 
  

   and 
  the 
  degree 
  of 
  fineness 
  shall 
  always 
  remain 
  the 
  same. 
  The 
  first 
  

   condition 
  is 
  obtained 
  by 
  drying 
  the 
  clay 
  in 
  sheds, 
  the 
  second 
  by 
  

   screening 
  the 
  material, 
  after 
  it 
  is 
  ground. 
  

  

  The 
  manufacture 
  of 
  brick 
  by 
  the 
  dry 
  press 
  process 
  has 
  certain 
  

   advantages 
  over 
  the 
  stiff 
  mud 
  or 
  soft 
  mud 
  process. 
  

  

  1 
  Drying 
  racks 
  and 
  drying 
  sheds 
  are 
  not 
  needed, 
  which 
  means 
  

   a 
  certain 
  saving 
  of 
  capital 
  and 
  cost 
  for 
  repairs. 
  

  

  2 
  The 
  production 
  of 
  brick 
  by 
  this 
  method 
  is 
  cheaper, 
  and 
  the 
  

   bricks 
  produced 
  have 
  a 
  more 
  constant 
  and 
  even 
  form. 
  

  

  3 
  Labor 
  is 
  cheaper 
  than 
  in 
  the 
  case 
  of 
  the 
  other 
  methods, 
  as 
  

   there 
  is 
  less 
  handling 
  to 
  be 
  done, 
  the 
  bricks 
  being 
  carried 
  directly 
  

   from 
  the 
  molding 
  machine 
  to 
  the 
  kiln. 
  

  

  The 
  forms 
  of 
  the 
  bricks 
  molded 
  on 
  dry 
  press 
  machines 
  are 
  not 
  

   restricted 
  to 
  rectangular 
  shapes, 
  but 
  ornamental 
  patterns 
  can 
  also 
  

   be 
  produced, 
  which 
  in 
  the 
  case 
  of 
  plastic 
  methods 
  can 
  be 
  formed 
  

   only 
  in 
  plaster 
  molds. 
  

  

  