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GB191117756A - Improvements in or relating to Drills and Taps for Multiple Diameter Holes. - Google Patents

Improvements in or relating to Drills and Taps for Multiple Diameter Holes.

Info

Publication number
GB191117756A
GB191117756A GB191117756DA GB191117756A GB 191117756 A GB191117756 A GB 191117756A GB 191117756D A GB191117756D A GB 191117756DA GB 191117756 A GB191117756 A GB 191117756A
Authority
GB
United Kingdom
Prior art keywords
shell
shell cutter
cutters
drills
taps
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
Inventor
Albert Edward Walkden
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
Application granted granted Critical
Publication of GB191117756A publication Critical patent/GB191117756A/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
    • B23B51/10—Bits for countersinking
    • B23B51/104—Bits for countersinking with stops

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

17,756. Walkden, A. E. Aug. 4. Drills and cutters; taps.-A drill for use in boring recessed holes is formed in three parts, the drill proper A having a flange a<3> with pins b<4>, which engage and rotate a shell cutter B, to which is secured by a screw pin c<4> another shell cutter C. This shell cutter has a shoulder at its outer end adapted to be engaged by a ring D, which forms a depth gauge and regulates the depth of hole being drilled. The positions of the recessing shell cutters may be adjusted by washers as E, and each shell cutter, besides having radial teeth c<1>, may also have outer cylindrical parting-teeth c<5>, Fig. 10. In a modification, the outer shell cutters and gauge-ring are integral and adjustably secured to the centre drill. When used to screw-thread a hole, the outer shell cutter is provided with the usual screw-cutting thread like a tap.
GB191117756D 1911-08-04 1911-08-04 Improvements in or relating to Drills and Taps for Multiple Diameter Holes. Expired GB191117756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191117756T 1911-08-04

Publications (1)

Publication Number Publication Date
GB191117756A true GB191117756A (en) 1912-09-04

Family

ID=34357530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191117756D Expired GB191117756A (en) 1911-08-04 1911-08-04 Improvements in or relating to Drills and Taps for Multiple Diameter Holes.

Country Status (1)

Country Link
GB (1) GB191117756A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667795A (en) * 1948-02-07 1954-02-02 Robert F Walker Counterbore attachment
US2692627A (en) * 1953-10-19 1954-10-26 Edw L Sibley Mfg Co Inc Boring tool
US2752965A (en) * 1953-04-20 1956-07-03 Bruce A Mackey Drill bit construction
US2794468A (en) * 1952-12-04 1957-06-04 Millers Falls Co Woodcutting bit assembly
US2832386A (en) * 1953-08-31 1958-04-29 Wood Mfg Co Inc Van Multi-step drill
US4079766A (en) * 1976-11-24 1978-03-21 Conley Beecher E Drill bit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667795A (en) * 1948-02-07 1954-02-02 Robert F Walker Counterbore attachment
US2794468A (en) * 1952-12-04 1957-06-04 Millers Falls Co Woodcutting bit assembly
US2752965A (en) * 1953-04-20 1956-07-03 Bruce A Mackey Drill bit construction
US2832386A (en) * 1953-08-31 1958-04-29 Wood Mfg Co Inc Van Multi-step drill
US2692627A (en) * 1953-10-19 1954-10-26 Edw L Sibley Mfg Co Inc Boring tool
US4079766A (en) * 1976-11-24 1978-03-21 Conley Beecher E Drill bit

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