|
GB191502736A
|
|
Improvements in Machines for the Breaking of Coal or other Friable Material.
|
|
GB191405092A
|
|
Improvements in Safety Mechanism for the Winding Gear of Mines.
|
|
CA145276A
|
|
Conveyer or screen
|
|
US1146947A
|
|
Reciprocating conveyer or screen.
|
|
GB191116094A
|
|
Improvements in Reciprocating Conveyors or Screens.
|
|
GB191100829A
|
|
Improvements in Reciprocating Conveyors or Screens.
|
|
GB191100831A
|
|
Improvements in Reciprocating Conveyors or Screens.
|
|
US1004186A
|
|
Conveyer.
|
|
US1041507A
|
|
Conveyer.
|
|
GB191006570A
|
|
Improvements in Swinging or Reciprocating Conveyors or Screens.
|
|
GB191005898A
|
|
Improvements in Apparatus for Washing Coal or other Substances.
|
|
GB191005429A
|
|
Improvements in Swinging Conveyors or Screens.
|
|
GB190930040A
|
|
Improvements in Swinging Conveyors or Screens.
|
|
GB190927193A
|
|
Improvements in Swinging Conveyors or Screens.
|
|
US771170A
|
|
Automatic weighing-machine.
|
|
GB190318467A
|
|
Improvements in Automatic Weighing Machines for Coal and like Substances.
|
|
GB190313005A
|
|
Apparatus for Automatically Weighing Definite Quantities of Large & Small Coals or other similar Substances & Shutting off Supply of same.
|
|
CA284171A
|
|
Wagon retarding device
|
