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US2326908A - Drill bit - Google Patents

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Publication number
US2326908A
US2326908A US44495542A US2326908A US 2326908 A US2326908 A US 2326908A US 44495542 A US44495542 A US 44495542A US 2326908 A US2326908 A US 2326908A
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US
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Grant
Patent type
Prior art keywords
segments
drill
bit
head
keys
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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
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Inventor
Jr Edward B Williams
Original Assignee
Jr Edward B Williams
Priority date (The priority date 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 date listed.)
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/81Tool having crystalline cutting edge
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/89Tool or Tool with support
    • Y10T408/895Having axial, core-receiving central portion
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/89Tool or Tool with support
    • Y10T408/907Tool or Tool with support including detailed shank

Description

1943- E. B. WILLIAMS, JR I v 2,326,908

DRILL BIT Filed May 29, 1942 INVENTOR.

Edward. BM illiamsJr. I

Patented Aug. 17, 1943 UNITED STATES PATENT OFFICE DRILL BIT Edward B. Williams, Jr., Greenville, Tex. Application May 29, 1942, Serial No. 444,955 3 Claims. (01. 255-72) This invention relates to well drilling tools and particularly to drill bits and in such connection it has more specific reference to the novel construction and arrangement thereof.

The primary object of the invention is to provide a drill bit-constructed in sections or segments so that the cutting parts of the bit may be removed and repairs made in the field when required. 7

Another object of the invention is the provisionof a drill bit constructed of a plurality of removable segments and wherein the segments are interlocked one with another and are interchangeable.

The invention also includes such features as novel means for securing the segments to a drill head, and the elimination of reaming, all of which I will'b'e clearly understood from a perusal of the following-detailed description, taken in connection with the accompanying drawing, and in the drawing:

Figure 1 is a side view of a drill head, partly broken'away and partly in section, and illustrating an embodiment of the segment bit;

Figure 2 is a top plan view thereof; the view being partly broken away;

Figure 3 is a rspective view of one of the segments showing the bottom thereof;

Figure 4 is a View similar to Figure 3, but showing the upper portion of the segment; and

' Figure 5 is a top plan view of one of thesegments, the broken lines indicating the means for securing the segments in position.

Having a more detailed reference to the drawing, i denotes a drill head with threaded portion 2 for connecting the head to a drill body. Formed on andfspaced around the head I are a plurality of ta red keys 3 for receiving and holding theme the segments for cutting. The segments show, at 4 in the several views of the drawing carry the abrasives such as diamonds of various grades, size and types, or steel alloys cast in the segments and indicated at A. The primary object of .the invention resides in the adaptability of the bit to be repaired in the field thus saving time, labor and cost. Toward this objective and as illustrated in the drawing each of the segments 4 has a recess 5 which conforms to the tapered form of the keys 3, and the keys 3 are bored at 3-11 to receive screw bolts or pins 6. This formgof construction and arrangement of the keys and segments provides a practical and effective means for holding the segments in position as the more pressure is, had on the segments the tighter the same are held on the keys.

This also prevents the segments from becoming dislodged or dropping off the keys when the drill Another important and particular feature of the drill bit is the manner of interlocking each segment with its adjacent segment. a For this purpose each segment has a tongue or projecting portion 1 and its opposite end is forked or has the projecting spaced parts 8. These parts thus interlock, the tonguesfitting snugly in between the parts 8 as shown in Figure 2 and which prevents drill fiuid from flowing in between the parts. ,7

From the foregoing it will be apparent that the drill core bit with its removable, interchangeable and interlocking segments and the manner of mounting and removing them provides a practical and useful bit of this nature. After drilling there is no reaming necessary as the hole will be cut full gauge, as, due to the segments being circular in form, in drilling the bit will slightly increase the diameter of the hole, and at the same time drill a perfectly circular hole. In case one portion of the bit becomes worn, the worn part can be removed and replaced with reinforced segments on the site, thus saving the usefulness and value in the unworn parts and thus cutting down cost of bits and drilling costs. The abrasives can thus also be removed and replaced with other segments, or adjusted on the site to meet'any drilling contingency arising in cutting the formations.

While the disclosure presents a practical working embodiment of a drill core bit embracing the features and advantages pointed out, it will be understood that the invention is not limited to the precise construction here shown, but is capable of some modifications and alterations in keeping with the inventive thought, and such as would be within the scope and meaning of the I following claims.

What is claimed is:

1. A drill core bit comprisinga hollow cylindrical head with a plurality of projecting tapered and arcuate keys spaced apart on one end of the head, a plurality of segments of arcuate form, each of which has a recess for complementally receiving the keys, each of the segments including tongue and groove means for connecting and interlocking the segments in a continuous rim on the head, the outer faces of the segments carrying abrasive elements.

2. A drill core bit comprising a hollow cylindrical head, one end of the head being threaded tongue of substantially wedge shape on one end thereof and a forked formation on its opposite end, the tongue and the forked formation projecting beyond the abrasive-holding portion of the segment, the tongue being complementally receivable in between the forked formation to thereby interlock the segments in position on the'head and upon the projections, and means for securing the segments in said interlocked po- 10 sition on the head.

EDWARD B. WILLIAMS, JR.

US2326908A 1942-05-29 1942-05-29 Drill bit Expired - Lifetime US2326908A (en)

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US2326908A US2326908A (en) 1942-05-29 1942-05-29 Drill bit

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US2326908A true US2326908A (en) 1943-08-17

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428823A (en) * 1943-05-18 1947-10-14 Thomas P Campbell Method of producing drill bits
US2506387A (en) * 1948-10-20 1950-05-02 Koebel Diamond Tool Co Core bit
US2506341A (en) * 1948-10-28 1950-05-02 Koebel Diamond Tool Co Core bit
US2506388A (en) * 1948-10-20 1950-05-02 Koebel Diamond Tool Co Core bit
US2671642A (en) * 1948-11-12 1954-03-09 Reed Roller Bit Co Coring apparatus
US2780896A (en) * 1955-03-14 1957-02-12 Jaye Corp Apparatus for cutting pipe cover sections from cellular material
US2946567A (en) * 1958-08-11 1960-07-26 Robert K Pepper Casing installing machine
US3306380A (en) * 1964-01-27 1967-02-28 Gen Automation Mfg Inc Core drill
US3382940A (en) * 1965-10-21 1968-05-14 Frank E. Stebley Percussion drill bit
US4208154A (en) * 1978-03-21 1980-06-17 Gundy William P Core drill
US4261620A (en) * 1979-10-30 1981-04-14 Carmet Company Tapered lock pin for a cutter tool bit
US4466498A (en) * 1982-09-24 1984-08-21 Bardwell Allen E Detachable shoe plates for large diameter drill bits
US4765333A (en) * 1983-05-25 1988-08-23 Bray Robert S Surgical methods and apparatus for bone removal
US4895146A (en) * 1982-01-25 1990-01-23 Klaus Draenert Surgical bone-grinding instrument
EP0352546A2 (en) * 1988-07-25 1990-01-31 HILTI Aktiengesellschaft Core drill bit
WO2000015942A1 (en) * 1998-09-16 2000-03-23 Baker Hughes Incorporated Reinforced abrasive-impregnated cutting elements, drill bits including same and methods
US20050105981A1 (en) * 2003-09-26 2005-05-19 The M. K. Morse Company Hole cutter and method for producing
US20080128170A1 (en) * 2006-11-30 2008-06-05 Drivdahl Kristian S Fiber-Containing Diamond-Impregnated Cutting Tools
US20110067924A1 (en) * 2009-09-22 2011-03-24 Longyear Tm, Inc. Impregnated cutting elements with large abrasive cutting media and methods of making and using the same
US20110174546A1 (en) * 2008-08-15 2011-07-21 Sandvik Intellectual Property Ab Core drill bit
WO2013093041A1 (en) * 2011-12-22 2013-06-27 Hilti Aktiengesellschaft Drill bit with an exchangeable cutting portion
US8657894B2 (en) 2011-04-15 2014-02-25 Longyear Tm, Inc. Use of resonant mixing to produce impregnated bits
US8778259B2 (en) 2011-05-25 2014-07-15 Gerhard B. Beckmann Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques
US9267332B2 (en) 2006-11-30 2016-02-23 Longyear Tm, Inc. Impregnated drilling tools including elongated structures
US20170001249A1 (en) * 2013-12-20 2017-01-05 Hilti Aktiengesellschaft Drill bit with a replaceable cutting portion
US9540883B2 (en) 2006-11-30 2017-01-10 Longyear Tm, Inc. Fiber-containing diamond-impregnated cutting tools and methods of forming and using same

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428823A (en) * 1943-05-18 1947-10-14 Thomas P Campbell Method of producing drill bits
US2506387A (en) * 1948-10-20 1950-05-02 Koebel Diamond Tool Co Core bit
US2506388A (en) * 1948-10-20 1950-05-02 Koebel Diamond Tool Co Core bit
US2506341A (en) * 1948-10-28 1950-05-02 Koebel Diamond Tool Co Core bit
US2671642A (en) * 1948-11-12 1954-03-09 Reed Roller Bit Co Coring apparatus
US2780896A (en) * 1955-03-14 1957-02-12 Jaye Corp Apparatus for cutting pipe cover sections from cellular material
US2946567A (en) * 1958-08-11 1960-07-26 Robert K Pepper Casing installing machine
US3306380A (en) * 1964-01-27 1967-02-28 Gen Automation Mfg Inc Core drill
US3382940A (en) * 1965-10-21 1968-05-14 Frank E. Stebley Percussion drill bit
US4208154A (en) * 1978-03-21 1980-06-17 Gundy William P Core drill
US4261620A (en) * 1979-10-30 1981-04-14 Carmet Company Tapered lock pin for a cutter tool bit
US4895146A (en) * 1982-01-25 1990-01-23 Klaus Draenert Surgical bone-grinding instrument
US4466498A (en) * 1982-09-24 1984-08-21 Bardwell Allen E Detachable shoe plates for large diameter drill bits
US4765333A (en) * 1983-05-25 1988-08-23 Bray Robert S Surgical methods and apparatus for bone removal
EP0352546A2 (en) * 1988-07-25 1990-01-31 HILTI Aktiengesellschaft Core drill bit
EP0352546A3 (en) * 1988-07-25 1991-03-13 HILTI Aktiengesellschaft Core drill bit
WO2000015942A1 (en) * 1998-09-16 2000-03-23 Baker Hughes Incorporated Reinforced abrasive-impregnated cutting elements, drill bits including same and methods
US6241036B1 (en) 1998-09-16 2001-06-05 Baker Hughes Incorporated Reinforced abrasive-impregnated cutting elements, drill bits including same
US6458471B2 (en) 1998-09-16 2002-10-01 Baker Hughes Incorporated Reinforced abrasive-impregnated cutting elements, drill bits including same and methods
US6742611B1 (en) 1998-09-16 2004-06-01 Baker Hughes Incorporated Laminated and composite impregnated cutting structures for drill bits
US20050105981A1 (en) * 2003-09-26 2005-05-19 The M. K. Morse Company Hole cutter and method for producing
US8783384B2 (en) 2006-11-30 2014-07-22 Longyear Tm, Inc. Fiber-containing diamond-impregnated cutting tools and methods of forming and using same
US20090071724A1 (en) * 2006-11-30 2009-03-19 Longyear Tm, Inc. Drilling systems including fiber-containing diamond-impregnated cutting tools
US20090078469A1 (en) * 2006-11-30 2009-03-26 Longyear Tm, Inc. Methods of forming and using fiber-containing diamond-impregnated cutting tools
US20100008738A1 (en) * 2006-11-30 2010-01-14 Longyear Tm, Inc. Fiber-containing sintered cutting tools
US7695542B2 (en) 2006-11-30 2010-04-13 Longyear Tm, Inc. Fiber-containing diamond-impregnated cutting tools
US9540883B2 (en) 2006-11-30 2017-01-10 Longyear Tm, Inc. Fiber-containing diamond-impregnated cutting tools and methods of forming and using same
US7975785B2 (en) 2006-11-30 2011-07-12 Longyear Tm, Inc. Drilling systems including fiber-containing diamond-impregnated cutting tools
US9404311B2 (en) 2006-11-30 2016-08-02 Longyear Tm, Inc. Fiber-containing diamond-impregnated cutting tools and methods of forming and using same
US8146686B2 (en) 2006-11-30 2012-04-03 Longyear Tm, Inc. Fiber-containing cutting tools
US8191445B2 (en) * 2006-11-30 2012-06-05 Longyear Tm, Inc. Methods of forming fiber-containing diamond-impregnated cutting tools
US9267332B2 (en) 2006-11-30 2016-02-23 Longyear Tm, Inc. Impregnated drilling tools including elongated structures
US20080128170A1 (en) * 2006-11-30 2008-06-05 Drivdahl Kristian S Fiber-Containing Diamond-Impregnated Cutting Tools
US8684111B2 (en) * 2008-08-15 2014-04-01 Sandvik Intellectual Property Ab Core drill bit
US20110174546A1 (en) * 2008-08-15 2011-07-21 Sandvik Intellectual Property Ab Core drill bit
US8590646B2 (en) 2009-09-22 2013-11-26 Longyear Tm, Inc. Impregnated cutting elements with large abrasive cutting media and methods of making and using the same
US20110067924A1 (en) * 2009-09-22 2011-03-24 Longyear Tm, Inc. Impregnated cutting elements with large abrasive cutting media and methods of making and using the same
US8657894B2 (en) 2011-04-15 2014-02-25 Longyear Tm, Inc. Use of resonant mixing to produce impregnated bits
US8778259B2 (en) 2011-05-25 2014-07-15 Gerhard B. Beckmann Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques
WO2013093041A1 (en) * 2011-12-22 2013-06-27 Hilti Aktiengesellschaft Drill bit with an exchangeable cutting portion
RU2609886C2 (en) * 2011-12-22 2017-02-06 Хильти Акциенгезельшафт Drilling crown with replaceable cutting section
US9687916B2 (en) 2011-12-22 2017-06-27 Hilti Aktiengesellschaft Drill bit with an exchangeable cutting portion
US20170001249A1 (en) * 2013-12-20 2017-01-05 Hilti Aktiengesellschaft Drill bit with a replaceable cutting portion

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