US2160158A - Drill - Google Patents
Drill Download PDFInfo
- Publication number
- US2160158A US2160158A US119203A US11920337A US2160158A US 2160158 A US2160158 A US 2160158A US 119203 A US119203 A US 119203A US 11920337 A US11920337 A US 11920337A US 2160158 A US2160158 A US 2160158A
- Authority
- US
- United States
- Prior art keywords
- drill
- bit
- cutting edge
- respect
- rod
- 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 5
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011435 rock 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
- 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
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/53—Split end with laterally movable opposed portions
- Y10T403/535—Split end with laterally movable opposed portions with separate force-applying means
-
- 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
- Y10T403/00—Joints and connections
- Y10T403/55—Member ends joined by inserted section
Definitions
- This invention relates to drills and particularly concerns drill bits, embodying certain novel features of construction, that effect improved results in the drilling of rock strata and the like.
- the invention provides drill bits by which straight holes of uniform diameter can be drilled at increased or higher speeds than are attainable when using bits of conventional design.
- Fig. 2 is a cross-section taken along the line 2-2 of Fig. l, and
- Fig. 3 is a side elevation of the same drill as that shown in Figs. 1 and 2.
- I0 represents the drill rod to which the drill bit I2 is secured.
- the bit I2 comprises three wings, l4, I6 and [8, each terminating in a cutting edge 20 with each of the three cutters or cutting edges 20 being flanked by a pair of reamers 22.
- the end of the drill rod l0 adjacent the bit is tapered both externally and internally, thus coacting as a male member with respect to the bit I2 and as a female member with respect to the tapered plug 24.
- reamers 22 are offset with respect to the cutters 20 instead of being flush therewith as is the case with many of the prior art contributions and it is the combination of this feature with a three-winged bit as contrasted to a two or four-winged which accounts for the much improved results that accompanying the use of the drill of the present invention.
- the reamers 22 are offset a considerable distance, say one-quarter inch, with respect to the cutting edges 20 so that in use they perform a true reaming function rather than a cutting function as is the case in some of the prior art structures in which such members project to the level of the cutting edges.
- the bit may be secured to the end of the drill rod in any of several different manners, it is preferably secured in the manner shown in the drawing, namely, by providing a tapered plug 24 which, when pressure is applied to the face of the drill bit, spreads the split end of the drill rod and firmly secures the bit to the rod by'friction alone.
- a tapered plug 24 which, when pressure is applied to the face of the drill bit, spreads the split end of the drill rod and firmly secures the bit to the rod by'friction alone.
- the frictional fitting as shown is more economical both from the standpoint of manufacture and operation than are the various threaded structures which have heretofore been commonly employed.
- one of the chief advantages in employing the drill of the present invention resides in its ability to drill a straight hole of uniform diameter which not only results in higher drilling speeds but also yields better results in blasting due to the fact that the charge is confined in a hole of the same diameter and not in one having a larger diameter at the collar than at the bottom.
- a drill bit comprising three Wings each terminating in a cutting edge and each cutting edge being flanked by reaming members wholly offset with respect to the cutting edge.
- each wing comprises one cutting edge and a reaming member on each side of the cutting edge, said reaming members being wholly offset with respect to the cutting edge.
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)
Description
May 30, 1939.
.1. H. LIND 2,160,158
DRILL Filed Jan. 6, 1957 ATTORNE'.
Patented May 30, 19 39 mirao STATES PATENT OFFICE DRILL Application January 6, 1937, Serial No. 119,203
3 Claims.
This invention relates to drills and particularly concerns drill bits, embodying certain novel features of construction, that effect improved results in the drilling of rock strata and the like.
Among other features, the invention provides drill bits by which straight holes of uniform diameter can be drilled at increased or higher speeds than are attainable when using bits of conventional design.
Although the novel features which are believed to be characteristic of this invention will be particularly pointed out in the claims appended hereto, the invention itself, as to its objects and advantages, and the manner in which it may be carried out, may be better understood by referring to the following description taken in connection with the accompanying drawing forming a part thereof, in which Fig. l is an end elevation of a drill constructed in accordance with the invention,
Fig. 2 is a cross-section taken along the line 2-2 of Fig. l, and
Fig. 3 is a side elevation of the same drill as that shown in Figs. 1 and 2.
Like reference characters denote like parts in the several figures of the drawing.
Referring to the drawing, I0 represents the drill rod to which the drill bit I2 is secured. The bit I2 comprises three wings, l4, I6 and [8, each terminating in a cutting edge 20 with each of the three cutters or cutting edges 20 being flanked by a pair of reamers 22. The end of the drill rod l0 adjacent the bit is tapered both externally and internally, thus coacting as a male member with respect to the bit I2 and as a female member with respect to the tapered plug 24.
It will be noted that the reamers 22 are offset with respect to the cutters 20 instead of being flush therewith as is the case with many of the prior art contributions and it is the combination of this feature with a three-winged bit as contrasted to a two or four-winged which accounts for the much improved results that accompanying the use of the drill of the present invention.
In constructing the drill bit of the present invention, the reamers 22 are offset a considerable distance, say one-quarter inch, with respect to the cutting edges 20 so that in use they perform a true reaming function rather than a cutting function as is the case in some of the prior art structures in which such members project to the level of the cutting edges.
While the bit may be secured to the end of the drill rod in any of several different manners, it is preferably secured in the manner shown in the drawing, namely, by providing a tapered plug 24 which, when pressure is applied to the face of the drill bit, spreads the split end of the drill rod and firmly secures the bit to the rod by'friction alone. Actual drilling operations have demonstrated that the bit when secured in this manner will remain fixed during the drilling operation but can be readily removed for replacing the bit simply by imparting a sharp tap to the collar thereof. Further, the frictional fitting as shown is more economical both from the standpoint of manufacture and operation than are the various threaded structures which have heretofore been commonly employed.
As previously mentioned, one of the chief advantages in employing the drill of the present invention resides in its ability to drill a straight hole of uniform diameter which not only results in higher drilling speeds but also yields better results in blasting due to the fact that the charge is confined in a hole of the same diameter and not in one having a larger diameter at the collar than at the bottom. These advantages are apparent when it is realized that it has been the usual practice in drilling a hole, say, of one and three-quarter inches diameter, to start with a bit of, say, tWo and one-quarter inches diameter and finish the hole with a one and threequarter inch bit.
What is claimed is:
1. The combination with a drill rod of a threewinged drill bit having reamers wholly offset with respect to the cutters of the wings and means securing said bit to said rod.
2. A drill bit comprising three Wings each terminating in a cutting edge and each cutting edge being flanked by reaming members wholly offset with respect to the cutting edge.
3. A three-winged drill bit in which each wing comprises one cutting edge and a reaming member on each side of the cutting edge, said reaming members being wholly offset with respect to the cutting edge.
JOHN H. END.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US119203A US2160158A (en) | 1937-01-06 | 1937-01-06 | Drill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US119203A US2160158A (en) | 1937-01-06 | 1937-01-06 | Drill |
Publications (1)
Publication Number | Publication Date |
---|---|
US2160158A true US2160158A (en) | 1939-05-30 |
Family
ID=22383086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US119203A Expired - Lifetime US2160158A (en) | 1937-01-06 | 1937-01-06 | Drill |
Country Status (1)
Country | Link |
---|---|
US (1) | US2160158A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4488758A (en) * | 1980-11-24 | 1984-12-18 | Padley & Venables Limited | Pick and the combination of a pick and holder |
US20040118056A1 (en) * | 2002-12-24 | 2004-06-24 | Peters Andrew J. | Wedge-lock building blocks |
US20060060388A1 (en) * | 2004-08-17 | 2006-03-23 | Sandvik Intellectual Property Ab | Rock drill bit and a thread joint therefor |
-
1937
- 1937-01-06 US US119203A patent/US2160158A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4488758A (en) * | 1980-11-24 | 1984-12-18 | Padley & Venables Limited | Pick and the combination of a pick and holder |
US20040118056A1 (en) * | 2002-12-24 | 2004-06-24 | Peters Andrew J. | Wedge-lock building blocks |
US7108577B2 (en) * | 2002-12-24 | 2006-09-19 | Peters Andrew J | Wedge-lock building blocks |
US20060060388A1 (en) * | 2004-08-17 | 2006-03-23 | Sandvik Intellectual Property Ab | Rock drill bit and a thread joint therefor |
US7325633B2 (en) * | 2004-08-17 | 2008-02-05 | Sandvik Intellectual Property Ab | Rock drill bit and a thread joint therefor |
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