GB660816A - Improvements in or relating to a rotary percussion drill - Google Patents
Improvements in or relating to a rotary percussion drillInfo
- Publication number
- GB660816A GB660816A GB2991348A GB2991348A GB660816A GB 660816 A GB660816 A GB 660816A GB 2991348 A GB2991348 A GB 2991348A GB 2991348 A GB2991348 A GB 2991348A GB 660816 A GB660816 A GB 660816A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cutter
- rod
- pilot bit
- bore
- head
- 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
- 238000009527 percussion Methods 0.000 title 1
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
-
- 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
- E21B10/36—Percussion drill bits
- E21B10/40—Percussion drill bits with leading portion
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
660,816. Rotary percussive drills. STEVENS, A. H. (Timken Roller Bearing Co.). Nov. 17, 1948, No. 29913/48. Class 124 A rotary percussive drill rod has an axial bore and is threaded into a cutter having an axial bore in which is accommodated a cylindrical pilot bit the head of which abuts the rod and the lower cutting end of which extends beyond the cutting edges of the cutter. As shown, a rod A has an axial bore 3 and has fixed to it by threads a cutter B with cutting edges 6. A cylindrical pilot bit C, having two diametrically opposite grooves 11 and a groove 12 on its head, is located in a bore 4 in the cutter. The head of the pilot bit abuts the end of the rod A. In one modification the cutter has a chamber formed below the threaded portion and connected to the periphery by a bore to supply fluid behind the cutting edges. In other modifications a pilot bit with an axial passage way is a force fit in, or is formed integrally with, the end of the drill rod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2991348A GB660816A (en) | 1948-11-17 | 1948-11-17 | Improvements in or relating to a rotary percussion drill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2991348A GB660816A (en) | 1948-11-17 | 1948-11-17 | Improvements in or relating to a rotary percussion drill |
Publications (1)
Publication Number | Publication Date |
---|---|
GB660816A true GB660816A (en) | 1951-11-14 |
Family
ID=10299235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2991348A Expired GB660816A (en) | 1948-11-17 | 1948-11-17 | Improvements in or relating to a rotary percussion drill |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB660816A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120156A (en) * | 1982-04-28 | 1983-11-30 | Swan Plant Sales Limited | Rotary-percussive drill assembly |
WO2017200886A1 (en) * | 2016-05-17 | 2017-11-23 | Ajax Tool Works, Inc. | Rotary percussive piloted rock drill bit |
US20180100356A1 (en) * | 2016-10-10 | 2018-04-12 | Padley & Venables Limited | Drill Rod |
-
1948
- 1948-11-17 GB GB2991348A patent/GB660816A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120156A (en) * | 1982-04-28 | 1983-11-30 | Swan Plant Sales Limited | Rotary-percussive drill assembly |
WO2017200886A1 (en) * | 2016-05-17 | 2017-11-23 | Ajax Tool Works, Inc. | Rotary percussive piloted rock drill bit |
US10047564B2 (en) | 2016-05-17 | 2018-08-14 | Ajax Tool Works, Inc. | Rotary percussive piloted rock drill bit |
US20180100356A1 (en) * | 2016-10-10 | 2018-04-12 | Padley & Venables Limited | Drill Rod |
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