GB692373A - Improvements in or relating to drill bits for boring rock or like materials - Google Patents

Improvements in or relating to drill bits for boring rock or like materials

Info

Publication number
GB692373A
GB692373A GB128/51A GB12851A GB692373A GB 692373 A GB692373 A GB 692373A GB 128/51 A GB128/51 A GB 128/51A GB 12851 A GB12851 A GB 12851A GB 692373 A GB692373 A GB 692373A
Authority
GB
United Kingdom
Prior art keywords
cutters
bit
drill bits
extensions
axis
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
Application number
GB128/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB692373A publication Critical patent/GB692373A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

692,373. Drill bits. DIONISOTTI, J. Jan. 2, 1951 [Aug. 8, 1950], No. 128/51. Class 85 A bit for a rock drill that acts with a combined rotary and axial percussive movement has formed on the bit body 2 groups of cutters and is characterized in that, with the exception of the central cutter 6, the cutters 11-16, which act as chisels and which extend in a circumferential direction, are supported by lateral extensions 3 provided on the bit body and are disposed along a spiral 17 on a surface of revolution the radius of which increases towards the rear of the bit. The wedgeshaped shanks of the cutters are driven into similarly shaped recesses provided in said lateral extensions, some of said recesses being disposed at an angle with respect to the axis of the bit, whilst others, particularly the outermost ones, may be parallel to said axis and open at 19 on the lateral surfaces of the extensions, which may be two or four in number, for allowing the introduction of a tool for the removal of the cutters. The cutters at the periphery of the bit are arranged to cut a narrower step than that cut out by the other cutters. Specification 641,010 is referred to.
GB128/51A 1950-08-08 1951-01-02 Improvements in or relating to drill bits for boring rock or like materials Expired GB692373A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH692373X 1950-08-08

Publications (1)

Publication Number Publication Date
GB692373A true GB692373A (en) 1953-06-03

Family

ID=4529352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB128/51A Expired GB692373A (en) 1950-08-08 1951-01-02 Improvements in or relating to drill bits for boring rock or like materials

Country Status (1)

Country Link
GB (1) GB692373A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855181A (en) * 1955-12-19 1958-10-07 Ole K Olsen Drill bits
US3185228A (en) * 1963-01-21 1965-05-25 Hughes Tool Co Rotary-percussion drill bit with heel row inserts to prevent wedging
EP0169402A2 (en) * 1984-07-21 1986-01-29 Hawera Probst GmbH + Co. Rock drill bit
EP2865843A1 (en) 2013-10-28 2015-04-29 Sandvik Intellectual Property AB Percussive rock drill bit with optimised gauge buttons
EP2902583A1 (en) 2014-01-31 2015-08-05 Sandvik Intellectual Property AB Percussive rock drill bit with flushing grooves
EP2990589A1 (en) 2014-08-25 2016-03-02 Sandvik Intellectual Property AB Drill bit with recessed cutting face

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855181A (en) * 1955-12-19 1958-10-07 Ole K Olsen Drill bits
US3185228A (en) * 1963-01-21 1965-05-25 Hughes Tool Co Rotary-percussion drill bit with heel row inserts to prevent wedging
EP0169402A2 (en) * 1984-07-21 1986-01-29 Hawera Probst GmbH + Co. Rock drill bit
EP0169402A3 (en) * 1984-07-21 1986-12-10 Hawera Probst Gmbh + Co. Rock drill bit
US4729441A (en) * 1984-07-21 1988-03-08 Hawera Probst Gmbh & Co. Rock drill
EP2865843A1 (en) 2013-10-28 2015-04-29 Sandvik Intellectual Property AB Percussive rock drill bit with optimised gauge buttons
US10267094B2 (en) 2013-10-28 2019-04-23 Sandvik Intellectual Property Percussive rock drill bit with optimised gauge buttons
EP2902583A1 (en) 2014-01-31 2015-08-05 Sandvik Intellectual Property AB Percussive rock drill bit with flushing grooves
US10626680B2 (en) 2014-01-31 2020-04-21 Sandvik Intellectual Property Ab Percussive rock drill bit with flushing grooves
EP2990589A1 (en) 2014-08-25 2016-03-02 Sandvik Intellectual Property AB Drill bit with recessed cutting face
WO2016030036A1 (en) 2014-08-25 2016-03-03 Sandvik Intellectual Property Ab Drill bit with recessed cutting face
US10501997B2 (en) 2014-08-25 2019-12-10 Sandvik Intellectual Property Ab Drill bit with recessed cutting face

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