GB840701A - Improvements in or relating to drill bits - Google Patents

Improvements in or relating to drill bits

Info

Publication number
GB840701A
GB840701A GB2242058A GB2242058A GB840701A GB 840701 A GB840701 A GB 840701A GB 2242058 A GB2242058 A GB 2242058A GB 2242058 A GB2242058 A GB 2242058A GB 840701 A GB840701 A GB 840701A
Authority
GB
United Kingdom
Prior art keywords
shank
relating
drill bits
modification
portions
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
GB2242058A
Inventor
John James Jewitt
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.)
THOS R ELLIN FOOTPRINT WORKS L
Original Assignee
THOS R ELLIN FOOTPRINT WORKS L
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 THOS R ELLIN FOOTPRINT WORKS L filed Critical THOS R ELLIN FOOTPRINT WORKS L
Priority to GB2242058A priority Critical patent/GB840701A/en
Publication of GB840701A publication Critical patent/GB840701A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
    • B23B49/003—Stops attached to drilling tools, tool holders or drilling machines
    • B23B49/005—Attached to the drill

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Drilling Tools (AREA)

Abstract

840,701. Drills. ELLIN (FOOTPRINT WORKS), Ltd., T. R. Feb. 10, 1959 [July 12, 1958], No. 22420/58. Class 83 (3). A drill bit for making holes for wood screws has a shank 1, a flat blade 2 having a narrow pointed portion 5 and a wider portion 6 joining countersinking edges 7 on a still wider portion 8, these portions corresponding respectively to the screwed joint, plain shank and countersunk head of a wood screw. In a modification, the portions 5, 6 are replaced by a single tapered portion. In a further modification, the shank 1 is grooved to enable the depth gauge described in Specification 840,702 to be used.
GB2242058A 1958-07-12 1958-07-12 Improvements in or relating to drill bits Expired GB840701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2242058A GB840701A (en) 1958-07-12 1958-07-12 Improvements in or relating to drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2242058A GB840701A (en) 1958-07-12 1958-07-12 Improvements in or relating to drill bits

Publications (1)

Publication Number Publication Date
GB840701A true GB840701A (en) 1960-07-06

Family

ID=10179079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2242058A Expired GB840701A (en) 1958-07-12 1958-07-12 Improvements in or relating to drill bits

Country Status (1)

Country Link
GB (1) GB840701A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2405797A2 (en) * 1977-10-13 1979-05-11 Fischer Artur DRILLING KIT
GB2192144A (en) * 1986-04-29 1988-01-06 Dorniver Limited Method and apparatus for depth setting and changing tools
GB2271948A (en) * 1992-10-31 1994-05-04 Peter Roy Rogers A bit
EP0811449A2 (en) * 1996-06-05 1997-12-10 Kabushiki Kaisha Miyanaga Multistage bit and stopper for said multistage bit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2405797A2 (en) * 1977-10-13 1979-05-11 Fischer Artur DRILLING KIT
GB2192144A (en) * 1986-04-29 1988-01-06 Dorniver Limited Method and apparatus for depth setting and changing tools
GB2192144B (en) * 1986-04-29 1990-06-06 Dorniver Limited Method and apparatus for setting and changing tools
GB2271948A (en) * 1992-10-31 1994-05-04 Peter Roy Rogers A bit
EP0811449A2 (en) * 1996-06-05 1997-12-10 Kabushiki Kaisha Miyanaga Multistage bit and stopper for said multistage bit
EP0811449A3 (en) * 1996-06-05 1998-02-25 Kabushiki Kaisha Miyanaga Multistage bit and stopper for said multistage bit

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