|
GB834214A
|
|
Extendible feed leg for rock and like drilling machines
|
|
GB792373A
|
|
Improvements in and relating to drilling machines for wet drilling in rock, stone, coal or the like
|
|
US2613061A
|
|
Machine for operating in rock, coal, and the like
|
|
GB681166A
|
|
Machine for operating in rock, coal and like earth
|
|
GB618817A
|
|
Improvements in or relating to drilling or boring machines for operating in rock, coal, earth and the like
|
|
GB555394A
|
|
Improvements in and relating to hatchets, axes and similar tools
|
|
GB557730A
|
|
Improvements in and relating to lifting and hauling devices
|
|
GB547814A
|
|
Improvements in and relating to power hammers
|
|
GB518602A
|
|
Improvements in pneumatically operated drilling machines
|
|
GB482133A
|
|
Improvements in, or relating to, boring machines for use in rock, coal or similar material
|
|
GB482043A
|
|
Improvements in machines having multiple tool spindles for operating devices for cutting slots in rock, coal and the like
|
|
GB436182A
|
|
Improvements in, and relating to, tool holding chucks
|
|
GB429887A
|
|
Improvements in valve mechanism for compressors
|
|
GB431179A
|
|
Improvements in and relating to high speed compressors
|
|
GB440671A
|
|
Improved flap valve for airpicks and similar machines operated by compressed air
|
|
GB425203A
|
|
Improvements in or relating to rock drilling or coal cutting machines and the like
|
|
GB424999A
|
|
Improvements in, and relating to, tool holding chucks
|
|
GB412457A
|
|
Improvements in, and relating to, fluid pressure operated percussive tools
|
|
GB412431A
|
|
Improvements in, and relating to, fluid pressure operated percussive tools
|
|
GB419957A
|
|
Improvements in, and relating to, picks
|
