Anti-buckling device for mine-roof bolting machines
Apparatus for constantly rotating casing during installation
Apparatus for feeding a drilling machine in extension rod drilli
Apparatus for imparting relative movement between an...
Apparatus for moving earth boring machines
Automatic feed and rotational speed control system of a hydrauli
Bolting rigs
Cable tensioner for a downcrowding device for earth boring machi
Carriage feed system
Collapsible pedestal for drilling apparatus
Crowd for kelly bar
Device for feeding a reel along a track
Device for guiding and tensioning supply lines
Device for reciprocating motion of a rotating drilling body of a
Device in rock drilling machines
Device in rock or earth drilling apparatus for rotary drilling
Digger attachment
Double rod cylinder feed system
Downcrowding device for earth boring machines
Drill