GB394890A - Improvements in or relating to drills for coal and rock - Google Patents
Improvements in or relating to drills for coal and rockInfo
- Publication number
- GB394890A GB394890A GB3694532A GB3694532A GB394890A GB 394890 A GB394890 A GB 394890A GB 3694532 A GB3694532 A GB 3694532A GB 3694532 A GB3694532 A GB 3694532A GB 394890 A GB394890 A GB 394890A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drills
- rock
- coal
- annular section
- relating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003245 coal Substances 0.000 title abstract 2
- 239000011435 rock Substances 0.000 title abstract 2
- 230000036346 tooth eruption Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
394,890. Drills. MOND, A. L., 19, Southampton Buildings, London.-(Union Ges. f³r Bergwerks-und H³ttenbedarf; 7, Kaiserstrasse, Beuthen, Upper Silesia, Germany.) Dec. 30, 1932, No. 36945. [Class 83 (iii).] A drill for coal, rock, and the like of the kind having cutting teeth arranged eccentric to the axis is characterized in that one part c, a<1> of each of the cuttng edges cuts over a common annular section while the other parts b, a<11> each cut over a separate concentric annular section. Sockets.-Connection between bit and shank is by a spring- pressed detent m and a shoulder p to resist the torque.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3694532A GB394890A (en) | 1932-12-30 | 1932-12-30 | Improvements in or relating to drills for coal and rock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3694532A GB394890A (en) | 1932-12-30 | 1932-12-30 | Improvements in or relating to drills for coal and rock |
Publications (1)
Publication Number | Publication Date |
---|---|
GB394890A true GB394890A (en) | 1933-07-06 |
Family
ID=10392472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3694532A Expired GB394890A (en) | 1932-12-30 | 1932-12-30 | Improvements in or relating to drills for coal and rock |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB394890A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2461305A (en) * | 1943-09-22 | 1949-02-08 | Victor Products Ltd | Rotary bit for drilling coal and rock |
US2614814A (en) * | 1948-12-23 | 1952-10-21 | Joy Mfg Co | Coal drill bit |
US2639122A (en) * | 1949-11-01 | 1953-05-19 | Gerald A Petersen | Pilot bit for earth augers |
-
1932
- 1932-12-30 GB GB3694532A patent/GB394890A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2461305A (en) * | 1943-09-22 | 1949-02-08 | Victor Products Ltd | Rotary bit for drilling coal and rock |
US2614814A (en) * | 1948-12-23 | 1952-10-21 | Joy Mfg Co | Coal drill bit |
US2639122A (en) * | 1949-11-01 | 1953-05-19 | Gerald A Petersen | Pilot bit for earth augers |
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