E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
20/112, 255/35
E21B 15/04 (2006.01) E21B 7/04 (2006.01)
Patent
CA 1124982
ROTARY BLAST HOLE DRILL Abstract of the Disclosure A rotary blast hole drilling apparatus having a tiltable mast supported by adjustable mast braces and hav- ing a drill stem guide is described. The tiltable mast is supported by mast braces extending from the mast to a sup- porting platform, each formed of telescoping members. A series of openings are arranged along the length of the lower mast brace member for receiving a stop pin to be placed at the desired point for making the mast brace of a length necessary to support it at the desired angle of tilt. A seat is placed on the stop pin and allows the mast brace to assume the desired length to support the mast at the desired angle. A drill stem guide assembly is provided for substantially frictionlessly gripping the drill stem, especially as an angled drilling operation is being carried out. The entire drill stem guide assembly is operable to pivot substantially 90 degrees to permit passage of a rot- ary gear box drive assembly for the drill stem as it moves towards the lower end of the mast.
337176
Dresser Industries Inc.
Macrae & Co.
LandOfFree
Angle drilling feature for rotary blast hole drills does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Angle drilling feature for rotary blast hole drills, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Angle drilling feature for rotary blast hole drills will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1152824