US1962589A - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- US1962589A US1962589A US597315A US59731532A US1962589A US 1962589 A US1962589 A US 1962589A US 597315 A US597315 A US 597315A US 59731532 A US59731532 A US 59731532A US 1962589 A US1962589 A US 1962589A
- Authority
- US
- United States
- Prior art keywords
- blade
- opening
- pin
- slot
- drill bit
- 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 - Lifetime
Links
- 238000005553 drilling Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
Images
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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17923—Transverse pin
Definitions
- This invention relates generally to deep well drilling apparatus, and specifically to drill bits.
- the conventional drill bit of the removable blade type includes a bolt or pin carried by the head and extending through an opening in the blade to hold the blade in a slot in the head.
- the parts are subjected to great strains, and the bolt is either broken or loosened, so that it falls out of the head, and the blade is released.
- the drill stem must then be removed 0 from the hole, and the bolt and blade recovered by fishing tools before drilling can be continued.
- this invention has for its object the provision of a drill bit of the removable blade type embodying new and improved means to hold the blade in place.
- Fig. 1 is a partly sectional side elevation of the bit
- Fig. 2 a partly sectional side elevation at a right angle to Fig. 1
- Fig. 3 a bottom plan view.
- the bit head is indicated at 1. It is connected to the lowermost secton of a drill stem, not shown. In its lower end it has a slot 2, the walls of which are inclined upwardly and inwardly, as shown; and a transverse bore 3 communicating with said slot.
- a blade 4 of the fish tail type Within the slot 2 is a blade 4 of the fish tail type, the upper portion of which is tapered to snugly engage the walls of the slot 2.
- the blade 4 has a pin opening 5, the upper portion 6 of which is larger than its lower portion 7.
- a pin 8 In the bore 3 and extending through the opening 5 in the blade 4 is a pin 8 having a reduced central portion 9. This pin may be held in the bore 3 by threads 10 and a cotter pin 11. That portion 13 of the pin 8 in the bore 3 adjacent the opening 5 in the blade is stronger than that portion 12 of said pin in said bore remote from 1932, Serial No. 597,315
- the larger, upper portion 6 of the blade opening 5 is adapted to receive the threaded end 10 of the pin
- the smaller, lower portion 7 of the blade opening 5 is adapted to receive the reduced portion 9 of the pin.
- a bit head having a downwardly opening slot in its bottom, the walls of said slot being inclined inwardly and upwardly, and a transverse bore communicating with said slot; a blade having a tapered portion to fit in said slot, and an opening in said tapered portion, the upper portion of said opening being larger than the lower portion of said opening; and a pin movable into said bore and through said opening to hold said blade in said slot, said pin having a reduced portion between its ends to fit in the smaller portion of said blade opening.
- a bit head having a downwardly opening slot in its bottom, and a transverse bore communicating with said slot; a blade having an opening, the upper portion of said opening being larger than the lower portion of said opening; and a pin movable into said bore and through said. blade opening to hold said blade in said slot, said pin having a reduced portion between its ends to fit in the smaller portion of said blade opening.
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 Tools (AREA)
Description
June 12, 1934. G. G. HARRINGTON DRILL BIT Filed March '7, 1932 Patented June 12,1934
UNITED STATES PATENT OFFICE DRILL BIT poration of Texas Application March 7,
2 Claims.
This invention relates generally to deep well drilling apparatus, and specifically to drill bits.
The conventional drill bit of the removable blade type includes a bolt or pin carried by the head and extending through an opening in the blade to hold the blade in a slot in the head. In deep Well drilling, the parts are subjected to great strains, and the bolt is either broken or loosened, so that it falls out of the head, and the blade is released. The drill stem must then be removed 0 from the hole, and the bolt and blade recovered by fishing tools before drilling can be continued.
To prevent the foregoing, this invention has for its object the provision of a drill bit of the removable blade type embodying new and improved means to hold the blade in place.
The preferred embodiment of the invention is illustrated by the accompanying drawing, of which Fig. 1 is a partly sectional side elevation of the bit; Fig. 2, a partly sectional side elevation at a right angle to Fig. 1; and Fig. 3, a bottom plan view.
The bit head is indicated at 1. It is connected to the lowermost secton of a drill stem, not shown. In its lower end it has a slot 2, the walls of which are inclined upwardly and inwardly, as shown; and a transverse bore 3 communicating with said slot.
Within the slot 2 is a blade 4 of the fish tail type, the upper portion of which is tapered to snugly engage the walls of the slot 2. The blade 4 has a pin opening 5, the upper portion 6 of which is larger than its lower portion 7.
In the bore 3 and extending through the opening 5 in the blade 4 is a pin 8 having a reduced central portion 9. This pin may be held in the bore 3 by threads 10 and a cotter pin 11. That portion 13 of the pin 8 in the bore 3 adjacent the opening 5 in the blade is stronger than that portion 12 of said pin in said bore remote from 1932, Serial No. 597,315
said opening so that if said pin is broken, it will fail at the portion 12 and the portion 13 will serve to hold the blade in the head.
It will be noted that the larger, upper portion 6 of the blade opening 5 is adapted to receive the threaded end 10 of the pin, and the smaller, lower portion 7 of the blade opening 5 is adapted to receive the reduced portion 9 of the pin. The pin 8 is passed through the bore 3 and the portion 6 of the blade opening, and the drill is then lowered into the hole. When the blade 4 engages the formation, it is forced upwardly into the slot 2 so that the reducedportion 9 of the pin 8 enters the smaller portion 7 of the blade opening 5.
As the ends of the pin cannot pass through the smaller portion 7 of the blade opening, the pin cannot fall out of the head.
I claim:
1. A bit head having a downwardly opening slot in its bottom, the walls of said slot being inclined inwardly and upwardly, and a transverse bore communicating with said slot; a blade having a tapered portion to fit in said slot, and an opening in said tapered portion, the upper portion of said opening being larger than the lower portion of said opening; and a pin movable into said bore and through said opening to hold said blade in said slot, said pin having a reduced portion between its ends to fit in the smaller portion of said blade opening.
2. A bit head having a downwardly opening slot in its bottom, and a transverse bore communicating with said slot; a blade having an opening, the upper portion of said opening being larger than the lower portion of said opening; and a pin movable into said bore and through said. blade opening to hold said blade in said slot, said pin having a reduced portion between its ends to fit in the smaller portion of said blade opening.
GEORGE G. HARRINGTON.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US597315A US1962589A (en) | 1932-03-07 | 1932-03-07 | Drill bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US597315A US1962589A (en) | 1932-03-07 | 1932-03-07 | Drill bit |
Publications (1)
Publication Number | Publication Date |
---|---|
US1962589A true US1962589A (en) | 1934-06-12 |
Family
ID=24391000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US597315A Expired - Lifetime US1962589A (en) | 1932-03-07 | 1932-03-07 | Drill bit |
Country Status (1)
Country | Link |
---|---|
US (1) | US1962589A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3174802A (en) * | 1963-06-06 | 1965-03-23 | Austin & Hoy And Company Ltd | Resiliently held coal-cutter picks |
EP2035646A1 (en) * | 2006-06-07 | 2009-03-18 | Keystone Air & Drill Supply Co. | Multi-sectional percussive drill bit assembly |
-
1932
- 1932-03-07 US US597315A patent/US1962589A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3174802A (en) * | 1963-06-06 | 1965-03-23 | Austin & Hoy And Company Ltd | Resiliently held coal-cutter picks |
EP2035646A1 (en) * | 2006-06-07 | 2009-03-18 | Keystone Air & Drill Supply Co. | Multi-sectional percussive drill bit assembly |
EP2035646A4 (en) * | 2006-06-07 | 2010-06-09 | Keystone Air & Drill Supply Co | Multi-sectional percussive drill bit assembly |
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