GB8729740D0 - Boring bits - Google Patents

Boring bits

Info

Publication number
GB8729740D0
GB8729740D0 GB878729740A GB8729740A GB8729740D0 GB 8729740 D0 GB8729740 D0 GB 8729740D0 GB 878729740 A GB878729740 A GB 878729740A GB 8729740 A GB8729740 A GB 8729740A GB 8729740 D0 GB8729740 D0 GB 8729740D0
Authority
GB
United Kingdom
Prior art keywords
boring bits
boring
bits
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.)
Withdrawn
Application number
GB878729740A
Other versions
GB2199520A (en
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.)
Boart International Ltd
Original Assignee
Boart International Ltd
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 Boart International Ltd filed Critical Boart International Ltd
Publication of GB8729740D0 publication Critical patent/GB8729740D0/en
Publication of GB2199520A publication Critical patent/GB2199520A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
GB08729740A 1986-12-29 1987-12-21 Boring bit for coal or soft rock Withdrawn GB2199520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA869726 1986-12-29

Publications (2)

Publication Number Publication Date
GB8729740D0 true GB8729740D0 (en) 1988-02-03
GB2199520A GB2199520A (en) 1988-07-13

Family

ID=25578681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08729740A Withdrawn GB2199520A (en) 1986-12-29 1987-12-21 Boring bit for coal or soft rock

Country Status (3)

Country Link
AU (1) AU8289087A (en)
DE (1) DE3743480A1 (en)
GB (1) GB2199520A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110245A1 (en) * 1991-03-28 1992-10-01 Boart Hwf Gmbh Co Kg Drill head with hard metal cutters - has main cutter provided with outwardly curved section extending over greater part of total length of main and adjoining cutters

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB599451A (en) * 1946-07-24 1948-03-12 Charles Frederick Hay An improved boring bit for use in drilling coal, stone and the like
GB351337A (en) * 1929-09-18 1931-06-25 Siemens Ag Double winged boring bit
GB364460A (en) * 1930-05-15 1932-01-07 Krupp Ag Improvements in rotary drill bits
GB518747A (en) * 1938-08-31 1940-03-06 Charles Crofton And Company En Improvements relating to rock boring bits
GB685967A (en) * 1950-12-02 1953-01-14 Jessop William & Sons Ltd Improvements in or relating to rotary bits for coal and like drilling
GB788104A (en) * 1954-10-01 1957-12-23 Modern Hardmetals Ltd Improvements in or relating to rock drilling bits
GB822029A (en) * 1956-03-15 1959-10-21 Coal Industry Patents Ltd Improvements in or relating to scroll-type drilling tools

Also Published As

Publication number Publication date
DE3743480A1 (en) 1988-07-07
GB2199520A (en) 1988-07-13
AU8289087A (en) 1988-06-30

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)