Getting items from a chest at a specific side and inserting into a specific side

[makerimages]

Hey, how could I make a block(which methods needed?) That would do the following things:

 

• Extract items at a specific amount a time from a specific side`s invenotry( a chest or any other invenotry holding thing)
  
• Insert those items to an inventory on a specific side, at the same amount each time as it extracted
  

?

 

[makerimages]

any ideas?

[lexwebb]

Have a look at TileEntityFurnace ISidedInventory code, its quite useful