GB8321256D0 - Drill bits - Google Patents

Drill bits

Info

Publication number
GB8321256D0
GB8321256D0 GB838321256A GB8321256A GB8321256D0 GB 8321256 D0 GB8321256 D0 GB 8321256D0 GB 838321256 A GB838321256 A GB 838321256A GB 8321256 A GB8321256 A GB 8321256A GB 8321256 D0 GB8321256 D0 GB 8321256D0
Authority
GB
United Kingdom
Prior art keywords
drill bits
drill
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.)
Granted
Application number
GB838321256A
Other versions
GB2123322A (en
GB2123322B (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.)
Stephenson F T
Original Assignee
Stephenson F T
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
Priority claimed from GB8103418A external-priority patent/GB2092033B/en
Application filed by Stephenson F T filed Critical Stephenson F T
Priority to GB08321256A priority Critical patent/GB2123322B/en
Publication of GB8321256D0 publication Critical patent/GB8321256D0/en
Publication of GB2123322A publication Critical patent/GB2123322A/en
Application granted granted Critical
Publication of GB2123322B publication Critical patent/GB2123322B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/08—Drills combined with tool parts or tools for performing additional working
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/108—Bits for countersinking having a centering drill

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
GB08321256A 1981-02-04 1983-08-06 Drill bits with countersinking means Expired GB2123322B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08321256A GB2123322B (en) 1981-02-04 1983-08-06 Drill bits with countersinking means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8103418A GB2092033B (en) 1981-02-04 1981-02-04 Twist drill with secondary cutting tooth
GB08321256A GB2123322B (en) 1981-02-04 1983-08-06 Drill bits with countersinking means

Publications (3)

Publication Number Publication Date
GB8321256D0 true GB8321256D0 (en) 1983-09-07
GB2123322A GB2123322A (en) 1984-02-01
GB2123322B GB2123322B (en) 1985-05-15

Family

ID=26278326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08321256A Expired GB2123322B (en) 1981-02-04 1983-08-06 Drill bits with countersinking means

Country Status (1)

Country Link
GB (1) GB2123322B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006001819A1 (en) * 2003-11-12 2006-01-05 Donald Nadler Anchoring drill bit, system and method of anchoring
GB2494636A (en) * 2011-09-13 2013-03-20 Alan Lees Counterbore and chamfer tool
CN103273122A (en) * 2013-06-14 2013-09-04 昆山昊凯金属制品有限公司 Chambering drill bit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258692A (en) * 1925-07-03 1926-09-30 William Wallace Patterson Improvements in or relating to drills, taps and countersinking tools
GB570099A (en) * 1943-12-18 1945-06-21 Aubrey Evelyn Taylor A combined twist drill and countersinking or counterboring attachment
DE2161316A1 (en) * 1970-12-29 1972-08-03 Knutsson A Tool interchangeably connected to a twist drill

Also Published As

Publication number Publication date
GB2123322A (en) 1984-02-01
GB2123322B (en) 1985-05-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930204