US1634865A - Core drill - Google Patents
Core drill Download PDFInfo
- Publication number
- US1634865A US1634865A US118026A US11802626A US1634865A US 1634865 A US1634865 A US 1634865A US 118026 A US118026 A US 118026A US 11802626 A US11802626 A US 11802626A US 1634865 A US1634865 A US 1634865A
- Authority
- US
- United States
- Prior art keywords
- plug
- core
- bit
- drill
- barrel
- 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
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
-
- 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
- E21B10/02—Core 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
Definitions
- the present invention relates to improvements in core drills, and has for its principal object to provide a plug for the core bit of a drill whereby loose shale and sand or other formation will be prevented from entering the barrel of the drill until such time as the core is taken.
- the purpose of the present invention is to provide an attachment for a core drill which will eliminate the above disadvantages.
- Another important object of the invention is to provide a coredrill wherein the plug which is associated with the core bit may be released by the rotation of the barrel, additional means being associated with the plug for holding the same in one position while u the barrel is being rotated so as to remove the same from the plug.
- a still further object is to provide a core.
- Figure 1 is a vertical sectional view through the lower portion of a core drill showing my removable plug supported in the core bi
- Figure 2 is a side elevation of the plug per se
- Figure 3 is a transverse sect-ion through the core bit and the lug.
- the numeral 1 designates the inner barrel. of a core drill
- the outer barrel being designated enera-lly by the numeral 2.
- the core bit is esignated generally by the numeral 3, the same comprising the tubular body portion 4, the upper end of which is provided with .the enlarged internally threaded portion 5 for engagement with the externally threaded lower end of the outer pipe 2 in the manner clearly shown in Figure 1.
- the intermediatepob tion of the tubular body t is threaded on the lower threaded end of the inner barrel 1 as indicated at 6.
- the exterior lower portion of the core bit 3 is slightly rounded and extending laterally therefrom are the cutting wings or blades 7. As the construction of the core bit is well known in the art, a further description thereof is thought unnecessary.
- the lower portion of the hit 3 is provided with the internally threaded portion 8 and the purpose thereof will be presently apparent.
- a cylindrical plug 9 is adapted to be removably fitted in the lower portion of the bit 3 and for the purpose of holding the plug in the lower portion of the bit, said plug is externally threaded at a point adjacent its upper end as indicated at 10, and this threaded portion cooperates with the internally threaded portion 8 of the lower por-' tion of the bit 3 in the manner clearly shown in Figure 1.
- the plug 9 is adapted to provide a closure for the lower end of the inner barrel 1 so that the loose shale, sand or other formation will be prevented from entering the barrel, while the core drill is in use.
- plug 9 is further tapered at its top as indi-' cated at 11 to prevent the plug from catching on the core attacher springs 12 which are arranged within the core bit 3 in the manner also well known inthe art.
- the plug 9 is of such length as to have its lower portion extending below the cutting wings or-blades 7, and the lower end of the plug 9 is slightly rounded on its opposite sides as illustrated at 13 to form a continuation of the rounded exterior .portion of the bit 3.
- the outwardly projecting lower end portion 13 of the plug 9 has formed thereon the ground engaging portion 14, the same being preferably in the form of a chisel-
- the plug 9 is further provided with longitudinally extending fluid passages 15, the same extending from the rounded bottom 13 of the plug to the top thereof to PIOYlLle a means whereby the plug will be permitted to enter the inner barrel 1.
- a core drill in a core drill, an inner barrel, a. casing surrounding the same, a core bit secured on the lower end thereol said bit being provided with the usual laterally extending blade and core attacher spring, a. removable solid plug threaded in the bit to provide a slosure for the lower end of the innerbarrel, the upper end of the plug being beveled, the lower end 01 the plug extending beyond the bottom oi the bit and being shaped to form a continuation of the lower exterior portion of the bit, a ground engaging element formed on the lower end of the plug itor preventing the rotation thereof in order to facilitate the removal of the .corebit from the plug, said plan; being provided with longitudinally extending passages to permit a fluid to enter the inner barrel.
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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
Patented July 5, 1927.
SATES WALTER, C. BARNES, 0F TAFT, CALIFORNIA.
CORE DRILL.
Application filed June 23, 1926.
The present invention relates to improvements in core drills, and has for its principal object to provide a plug for the core bit of a drill whereby loose shale and sand or other formation will be prevented from entering the barrel of the drill until such time as the core is taken.
It frequently happens that in lowering a core drill into a well that the heavy "formations such as rock, sand and shale which has settled to the bottom of the hole will enter the core barrel and will pass through the barrel and the valve seat into the drill pipe -where the same becomes trapped.
Some of the particles are relatively large, and as a result cannot pass through the circulating holes provided in the core bit, and as a result they plug them and cause unnec. essary work. The purpose of the present invention is to provide an attachment for a core drill which will eliminate the above disadvantages.
Another important object of the invention is to provide a coredrill wherein the plug which is associated with the core bit may be released by the rotation of the barrel, additional means being associated with the plug for holding the same in one position while u the barrel is being rotated so as to remove the same from the plug.
A still further object is to provide a core.
drill of the above mentioned character which is simple in construction, inexpensive, strong and durable and further well adapted to the purpose for which it is designed.
Other objects and advantages of the invention will become apparent during the course of the following description taken in connection with the accompanying drawing.
In the accompanying drawing forming a part of this application and in which like numerals designate like parts throughout the several views Figure 1 is a vertical sectional view through the lower portion of a core drill showing my removable plug supported in the core bi Figure 2 is a side elevation of the plug per se, and
Figure 3 is a transverse sect-ion through the core bit and the lug.
In the drawing w erein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 designates the inner barrel. of a core drill,
Serial No. 118,026.
the outer barrel being designated enera-lly by the numeral 2. The core bit is esignated generally by the numeral 3, the same comprising the tubular body portion 4, the upper end of which is provided with .the enlarged internally threaded portion 5 for engagement with the externally threaded lower end of the outer pipe 2 in the manner clearly shown in Figure 1. The intermediatepob tion of the tubular body t is threaded on the lower threaded end of the inner barrel 1 as indicated at 6.
The exterior lower portion of the core bit 3 is slightly rounded and extending laterally therefrom are the cutting wings or blades 7. As the construction of the core bit is well known in the art, a further description thereof is thought unnecessary. The lower portion of the hit 3 is provided with the internally threaded portion 8 and the purpose thereof will be presently apparent.
A cylindrical plug 9 is adapted to be removably fitted in the lower portion of the bit 3 and for the purpose of holding the plug in the lower portion of the bit, said plug is externally threaded at a point adjacent its upper end as indicated at 10, and this threaded portion cooperates with the internally threaded portion 8 of the lower por-' tion of the bit 3 in the manner clearly shown in Figure 1. The plug 9 is adapted to provide a closure for the lower end of the inner barrel 1 so that the loose shale, sand or other formation will be prevented from entering the barrel, while the core drill is in use. The
plug 9 is further tapered at its top as indi-' cated at 11 to prevent the plug from catching on the core attacher springs 12 which are arranged within the core bit 3 in the manner also well known inthe art.
The plug 9 is of such length as to have its lower portion extending below the cutting wings or-blades 7, and the lower end of the plug 9 is slightly rounded on its opposite sides as illustrated at 13 to form a continuation of the rounded exterior .portion of the bit 3. The outwardly projecting lower end portion 13 of the plug 9 has formed thereon the ground engaging portion 14, the same being preferably in the form of a chisel- The plug 9 is further provided with longitudinally extending fluid passages 15, the same extending from the rounded bottom 13 of the plug to the top thereof to PIOYlLle a means whereby the plug will be permitted to enter the inner barrel 1.
it will thus be seen from the foregoing description, that I have provided an attachment for a core drill which will provide a closure for the lower open end of the inner barrel thus preventing any possibility of any foreign substance entering the barrel while the drill is in use. The simplicity in which the plug is constructed enables the same to be readily inserted or removed with respect to the core bit and Will not in any way interfere with the operation of the core drill and the bit.
While I have shown the preferred exnbodiment of the invention it is to be understood that minor changes in the size, shape and arrangement of parts may be resorted to Without departing from the spirit of the invention and the scope of the appended claim.
Having thus described the invention, What l claim as new and desire to secure by Letters Patent is:-
in a core drill, an inner barrel, a. casing surrounding the same, a core bit secured on the lower end thereol said bit being provided with the usual laterally extending blade and core attacher spring, a. removable solid plug threaded in the bit to provide a slosure for the lower end of the innerbarrel, the upper end of the plug being beveled, the lower end 01 the plug extending beyond the bottom oi the bit and being shaped to form a continuation of the lower exterior portion of the bit, a ground engaging element formed on the lower end of the plug itor preventing the rotation thereof in order to facilitate the removal of the .corebit from the plug, said plan; being provided with longitudinally extending passages to permit a fluid to enter the inner barrel.
In testimony whereof I allix my signature.
WALTER G. BARNES.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US118026A US1634865A (en) | 1926-06-23 | 1926-06-23 | Core drill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US118026A US1634865A (en) | 1926-06-23 | 1926-06-23 | Core drill |
Publications (1)
Publication Number | Publication Date |
---|---|
US1634865A true US1634865A (en) | 1927-07-05 |
Family
ID=22376096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US118026A Expired - Lifetime US1634865A (en) | 1926-06-23 | 1926-06-23 | Core drill |
Country Status (1)
Country | Link |
---|---|
US (1) | US1634865A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6830132B1 (en) * | 2000-04-18 | 2004-12-14 | Korea Occupational Safety & Health Agency | Brake device for elevator |
-
1926
- 1926-06-23 US US118026A patent/US1634865A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6830132B1 (en) * | 2000-04-18 | 2004-12-14 | Korea Occupational Safety & Health Agency | Brake device for elevator |
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