GB519818A - Improvements in and relating to drill shafts, drill bits, adaptors and other connectors for use with percussive drills - Google Patents
Improvements in and relating to drill shafts, drill bits, adaptors and other connectors for use with percussive drillsInfo
- Publication number
- GB519818A GB519818A GB22991/38A GB2299138A GB519818A GB 519818 A GB519818 A GB 519818A GB 22991/38 A GB22991/38 A GB 22991/38A GB 2299138 A GB2299138 A GB 2299138A GB 519818 A GB519818 A GB 519818A
- Authority
- GB
- United Kingdom
- Prior art keywords
- socket
- drill
- shaft
- adaptors
- connectors
- 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
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
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)
- Drilling And Boring (AREA)
Abstract
519,818. Percussive drills. MORGAN, G. A., and PADLEY, L. Aug. 3, 1938, Nos. 22991 and 34388. [Class 124] A detachable drill bit a is made in the form of .a socket into which the drill shaft is forced, the end e of the shaft being slightly oversize with respect to its socket and when forced into position expands the socket to provide a friction grip. The shaft may be tapered slightly as shown, and the socket is made shallow so that its depth is preferably not greater than three quarters of the diameter. When the shaft is inserted to its full depth in the socket the expansion caused in the socket is preferably not greater than twenty-five thousandths of an,inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22991/38A GB519818A (en) | 1938-08-03 | 1938-08-03 | Improvements in and relating to drill shafts, drill bits, adaptors and other connectors for use with percussive drills |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22991/38A GB519818A (en) | 1938-08-03 | 1938-08-03 | Improvements in and relating to drill shafts, drill bits, adaptors and other connectors for use with percussive drills |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB519818A true GB519818A (en) | 1940-04-08 |
Family
ID=10188342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22991/38A Expired GB519818A (en) | 1938-08-03 | 1938-08-03 | Improvements in and relating to drill shafts, drill bits, adaptors and other connectors for use with percussive drills |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB519818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2654573A (en) * | 1948-02-02 | 1953-10-06 | Helen Elizabeth Annesley | Detachable rock drill bit |
| US2955804A (en) * | 1958-01-27 | 1960-10-11 | Westinghouse Air Brake Co | Drill bit |
-
1938
- 1938-08-03 GB GB22991/38A patent/GB519818A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2654573A (en) * | 1948-02-02 | 1953-10-06 | Helen Elizabeth Annesley | Detachable rock drill bit |
| US2955804A (en) * | 1958-01-27 | 1960-10-11 | Westinghouse Air Brake Co | Drill bit |
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