US3674101A - Drill construction - Google Patents
Drill construction Download PDFInfo
- Publication number
- US3674101A US3674101A US26677A US3674101DA US3674101A US 3674101 A US3674101 A US 3674101A US 26677 A US26677 A US 26677A US 3674101D A US3674101D A US 3674101DA US 3674101 A US3674101 A US 3674101A
- Authority
- US
- United States
- Prior art keywords
- drill
- plate
- head
- notches
- edge
- 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
- 238000010276 construction Methods 0.000 title description 12
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000005520 cutting process Methods 0.000 abstract description 27
- 238000005553 drilling Methods 0.000 abstract description 19
- 239000002969 artificial stone Substances 0.000 abstract description 4
- 238000005476 soldering Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000004904 shortening Methods 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
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
- E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
Definitions
- an object of the invention to provide an improved drill construction which includes a cutting head having a hardened plate cutting member with a central projection which is less than the outside diameter of the drill.
- FIG. la is a front elevational view of the drill indicated in FIG. 1;
- FIG. 3 is a view similar to FIG. I of still another embodiment of the invention.
- FIGS. 1 and la the invention embodied therein in FIGS. 1 and la comprises a drill I having a spirally extending drilling groove la defined therein and terminating in a head or end portion 4.
- a drill 10' which includes a head portion 40' having a plate 20' secured thereto.
- the plate 20' also includes a centering projection 30' which is defined between two notched areas 50 and 50' arranged on each side thereof.
- the construction forms the drilling teeth 60a and 60a of the rectangular configuration indicated.
- a spiral or twist drill comprising an axially elongated drill having a shank portion with a spiral groove defined in the exterior surface thereof and terminating in a head, the head of said drill having a groove therein extending diametrically across and inwardly from its end, a flat planar hard metal plate positioned within said groove and securely attached to said drill, said plate having a pointed edge extending axially from said head of said drill with the point thereof located on the axis of said drill, said pointed edge comprising two surfaces each sloping from the point in a diametrically opposite direction toward the circumferential periphery of said drill, each said surface of said edge extending rectilinearly from the point to the circumferential periphery of said drill and each said surface having a notch formed therein through said plate from one side to the other, each notch spaced between and from the point and the circumferential periphery of said drill, said notches being symmetrically arranged relative to the axis of said drill, and the portion
- a drill according to claim 1, wherein the notches are rectangular.
- a drill as set forth in claim 1, wherein said plate has a dimension in the diametrical direction of said drill which is slightly larger than the diameter of said drill so that said plate extends laterally from the head of said drill.
- a drill as set forth in claim I wherein said surfaces of said edge of said plate being disposed at a bevel angle in the range of 45 to 60.
- a drill as set forth in claim I, wherein said head of said drill being notched to form a continuation of said notch in said edge of said hard metal plate.
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)
- Drilling Tools (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691921677 DE1921677B2 (de) | 1969-04-28 | 1969-04-28 | Drehschlag-wendelbohrer |
Publications (1)
Publication Number | Publication Date |
---|---|
US3674101A true US3674101A (en) | 1972-07-04 |
Family
ID=5732675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US26677A Expired - Lifetime US3674101A (en) | 1969-04-28 | 1970-04-08 | Drill construction |
Country Status (6)
Country | Link |
---|---|
US (1) | US3674101A (de) |
AT (1) | AT301424B (de) |
CH (1) | CH508461A (de) |
DE (1) | DE1921677B2 (de) |
FR (1) | FR2042136A5 (de) |
GB (1) | GB1270347A (de) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143723A (en) * | 1977-10-04 | 1979-03-13 | Schmotzer Norman H | Carbide tipped drill bit for boring holes in concrete and steel |
US4503920A (en) * | 1981-08-10 | 1985-03-12 | Burke Clement | Masonry bit |
EP0322565A1 (de) * | 1987-12-16 | 1989-07-05 | Hawera Probst GmbH + Co. | Gesteinsbohrer |
US5288183A (en) * | 1986-08-18 | 1994-02-22 | Black & Decker Inc. | Self-centering drill bit with pilot tip |
US5442979A (en) * | 1988-03-14 | 1995-08-22 | Greenfield Industries, Inc. | Twist drill |
US5918105A (en) * | 1994-12-12 | 1999-06-29 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US6102634A (en) * | 1995-07-29 | 2000-08-15 | Black & Decker Inc. | Masonry drill bit |
EP1029622A2 (de) * | 1999-02-15 | 2000-08-23 | DreBo Werkzeugfabrik GmbH | Steinbohrer |
US6174111B1 (en) | 1994-12-12 | 2001-01-16 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
EP1527836A2 (de) * | 2003-11-03 | 2005-05-04 | Illinois Tool Works Inc. | Bohrhammerschneideinsatz |
US8613579B2 (en) * | 2007-10-11 | 2013-12-24 | Hilti Aktiengesellschaft | Self-drilling screw |
US10507534B2 (en) | 2016-03-17 | 2019-12-17 | O-Tags, Inc. | Systems, methods, and apparatus for reliably installing survey tags |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3538191C2 (de) * | 1985-10-26 | 1996-09-19 | Hilti Ag | Gesteinsbohrer |
DE3540355C2 (de) * | 1985-11-14 | 1996-01-11 | Duss Maschf | Bohrer zum drehschlagenden Bohren |
GB8624430D0 (en) * | 1986-10-11 | 1986-11-12 | Waddell G | Piloted drill bit |
DE3825107C2 (de) * | 1988-07-23 | 1996-07-11 | Hilti Ag | Gesteinsbohrer mit Schneidplatte |
US5641028A (en) * | 1995-08-10 | 1997-06-24 | Black & Decker Inc. | Drill bit with debris conveying flute |
GB2318072A (en) * | 1996-09-21 | 1998-04-15 | Plansee Tizit Gmbh | Masonry bit |
US5967712A (en) * | 1998-11-03 | 1999-10-19 | Kennametal Inc. | Cutting tool for machining bores in materials having spring-back |
DE10024433A1 (de) * | 2000-05-19 | 2001-11-29 | Hawera Probst Gmbh | Gesteinsbohrer |
US7237986B2 (en) | 2004-08-09 | 2007-07-03 | Black & Decker Inc. | High speed metal drill bit |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1007037A (en) * | 1911-02-25 | 1911-10-24 | Allan J Macdonald | Drill. |
DE584358C (de) * | 1932-10-19 | 1933-09-18 | Siemens Schuckertwerke Akt Ges | Gesteinsdrehbohrer |
US2230645A (en) * | 1938-02-01 | 1941-02-04 | Western Electric Co | Drill |
US2646701A (en) * | 1949-12-27 | 1953-07-28 | Peter A Letien | Stepped edge cutting tool |
US2673714A (en) * | 1950-08-05 | 1954-03-30 | John M Hargrave | Rock or masonry drill |
US2879036A (en) * | 1956-06-25 | 1959-03-24 | Philip T Wheeler | Masonry drill |
US3447616A (en) * | 1966-12-29 | 1969-06-03 | Zigmund E Granat | Drills |
US3460409A (en) * | 1967-05-10 | 1969-08-12 | Allied Machine & Eng Corp | Chip breaker for spade drill |
-
1969
- 1969-04-28 DE DE19691921677 patent/DE1921677B2/de not_active Withdrawn
-
1970
- 1970-02-23 CH CH259470A patent/CH508461A/de not_active IP Right Cessation
- 1970-02-26 AT AT177570A patent/AT301424B/de not_active IP Right Cessation
- 1970-03-13 GB GB02106/70A patent/GB1270347A/en not_active Expired
- 1970-03-19 FR FR7009897A patent/FR2042136A5/fr not_active Expired
- 1970-04-08 US US26677A patent/US3674101A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1007037A (en) * | 1911-02-25 | 1911-10-24 | Allan J Macdonald | Drill. |
DE584358C (de) * | 1932-10-19 | 1933-09-18 | Siemens Schuckertwerke Akt Ges | Gesteinsdrehbohrer |
US2230645A (en) * | 1938-02-01 | 1941-02-04 | Western Electric Co | Drill |
US2646701A (en) * | 1949-12-27 | 1953-07-28 | Peter A Letien | Stepped edge cutting tool |
US2673714A (en) * | 1950-08-05 | 1954-03-30 | John M Hargrave | Rock or masonry drill |
US2879036A (en) * | 1956-06-25 | 1959-03-24 | Philip T Wheeler | Masonry drill |
US3447616A (en) * | 1966-12-29 | 1969-06-03 | Zigmund E Granat | Drills |
US3460409A (en) * | 1967-05-10 | 1969-08-12 | Allied Machine & Eng Corp | Chip breaker for spade drill |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143723A (en) * | 1977-10-04 | 1979-03-13 | Schmotzer Norman H | Carbide tipped drill bit for boring holes in concrete and steel |
US4503920A (en) * | 1981-08-10 | 1985-03-12 | Burke Clement | Masonry bit |
US5288183A (en) * | 1986-08-18 | 1994-02-22 | Black & Decker Inc. | Self-centering drill bit with pilot tip |
EP0322565A1 (de) * | 1987-12-16 | 1989-07-05 | Hawera Probst GmbH + Co. | Gesteinsbohrer |
US4903787A (en) * | 1987-12-16 | 1990-02-27 | Hawera Probst Gmbh & Co. | Rock drill |
US5442979A (en) * | 1988-03-14 | 1995-08-22 | Greenfield Industries, Inc. | Twist drill |
US5918105A (en) * | 1994-12-12 | 1999-06-29 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US6174111B1 (en) | 1994-12-12 | 2001-01-16 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US6102634A (en) * | 1995-07-29 | 2000-08-15 | Black & Decker Inc. | Masonry drill bit |
EP1029622A2 (de) * | 1999-02-15 | 2000-08-23 | DreBo Werkzeugfabrik GmbH | Steinbohrer |
EP1029622A3 (de) * | 1999-02-15 | 2003-07-30 | DreBo Werkzeugfabrik GmbH | Steinbohrer |
EP1527836A2 (de) * | 2003-11-03 | 2005-05-04 | Illinois Tool Works Inc. | Bohrhammerschneideinsatz |
EP1527836A3 (de) * | 2003-11-03 | 2006-07-12 | Illinois Tool Works Inc. | Bohrhammerschneideinsatz |
US8613579B2 (en) * | 2007-10-11 | 2013-12-24 | Hilti Aktiengesellschaft | Self-drilling screw |
US10507534B2 (en) | 2016-03-17 | 2019-12-17 | O-Tags, Inc. | Systems, methods, and apparatus for reliably installing survey tags |
Also Published As
Publication number | Publication date |
---|---|
GB1270347A (en) | 1972-04-12 |
DE1921677A1 (de) | 1970-11-05 |
CH508461A (de) | 1971-06-15 |
FR2042136A5 (de) | 1971-02-05 |
DE1921677B2 (de) | 1977-09-29 |
AT301424B (de) | 1972-09-11 |
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