GB172828A - Improvements in or connected with twist drills - Google Patents

Improvements in or connected with twist drills

Info

Publication number
GB172828A
GB172828A GB3009620A GB3009620A GB172828A GB 172828 A GB172828 A GB 172828A GB 3009620 A GB3009620 A GB 3009620A GB 3009620 A GB3009620 A GB 3009620A GB 172828 A GB172828 A GB 172828A
Authority
GB
United Kingdom
Prior art keywords
twist drills
drills
galbraith
chamfered
chuck
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
GB3009620A
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
Priority to GB3009620A priority Critical patent/GB172828A/en
Publication of GB172828A publication Critical patent/GB172828A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/62—Drilling tools having means to reinforce the shank, e.g. drills having small shanks being gripped by devices having a larger shank

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

172,828. Galbraith, A. B. Oct. 25, 1920. Drills are supported by resilient sleeves 2, Fig. 1, which are split throughout their length along an axial or helical line. The sleeve may be held in the chuck so as to serve as a depth gauge, and may be provided with a chamfered and notched end, Fig. 4, for the discharge of chips, and with a conduit 12, Fig. 7, for the supply of lubricant.
GB3009620A 1920-10-25 1920-10-25 Improvements in or connected with twist drills Expired GB172828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3009620A GB172828A (en) 1920-10-25 1920-10-25 Improvements in or connected with twist drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3009620A GB172828A (en) 1920-10-25 1920-10-25 Improvements in or connected with twist drills

Publications (1)

Publication Number Publication Date
GB172828A true GB172828A (en) 1921-12-22

Family

ID=10302208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3009620A Expired GB172828A (en) 1920-10-25 1920-10-25 Improvements in or connected with twist drills

Country Status (1)

Country Link
GB (1) GB172828A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE749949C (en) * 1942-03-21 1952-12-08 Bosch Gmbh Robert Auxiliary equipment for hand drills
US2667795A (en) * 1948-02-07 1954-02-02 Robert F Walker Counterbore attachment
US4320999A (en) * 1980-03-13 1982-03-23 Briese Leonard A Coolant guide for end mill
US4813823A (en) * 1986-01-18 1989-03-21 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Drilling tool formed of a core-and-casing assembly
US5078552A (en) * 1991-03-19 1992-01-07 Albel Frank O Guide/drill stop for regulating drill depth

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE749949C (en) * 1942-03-21 1952-12-08 Bosch Gmbh Robert Auxiliary equipment for hand drills
US2667795A (en) * 1948-02-07 1954-02-02 Robert F Walker Counterbore attachment
US4320999A (en) * 1980-03-13 1982-03-23 Briese Leonard A Coolant guide for end mill
US4813823A (en) * 1986-01-18 1989-03-21 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Drilling tool formed of a core-and-casing assembly
US5078552A (en) * 1991-03-19 1992-01-07 Albel Frank O Guide/drill stop for regulating drill depth

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