GB231317A - Drilling polygonal holes - Google Patents

Drilling polygonal holes

Info

Publication number
GB231317A
GB231317A GB745724A GB745724A GB231317A GB 231317 A GB231317 A GB 231317A GB 745724 A GB745724 A GB 745724A GB 745724 A GB745724 A GB 745724A GB 231317 A GB231317 A GB 231317A
Authority
GB
United Kingdom
Prior art keywords
drilling
cutters
apertures
work
holes
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
GB745724A
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 GB745724A priority Critical patent/GB231317A/en
Priority to FR579242D priority patent/FR579242A/en
Publication of GB231317A publication Critical patent/GB231317A/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
    • B23B51/0072—Drills for making non-circular holes

Abstract

231,317. Reichmuth, E., and Brunner, W. March 24, 1924. Drilling-machines; drills and cutters.-A device for drilling rectangular holes through any thickness of metal comprises a bodypart 1 carrying four overlapping milling-cutters 12 provided with teeth 13 and situated on the sides of a rectangle. The lower part 2 of the body is cylindrical and is prevented from rotating in a previously bored hole in the work, through which it is fed, by pins 9 entering holes in a guide plate secured below the work. The cutters are robated bv bevel wheels 14 driven by a central wheel 23 on a shaft 16, rotatably mounted in the body by means of ball-bearings 18, 19. The gears are protected from cuttings by a two-part casing 24 having apertures to receive the rotary parts and felt washers 25, 26 in the apertures.
GB745724A 1924-03-24 1924-03-24 Drilling polygonal holes Expired GB231317A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB745724A GB231317A (en) 1924-03-24 1924-03-24 Drilling polygonal holes
FR579242D FR579242A (en) 1924-03-24 1924-03-25 Improvements to drills and drilling tools, in general

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB745724A GB231317A (en) 1924-03-24 1924-03-24 Drilling polygonal holes

Publications (1)

Publication Number Publication Date
GB231317A true GB231317A (en) 1925-04-02

Family

ID=9833454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB745724A Expired GB231317A (en) 1924-03-24 1924-03-24 Drilling polygonal holes

Country Status (2)

Country Link
FR (1) FR579242A (en)
GB (1) GB231317A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1083375C (en) * 1996-03-15 2002-04-24 吉第联合股份公司 Product overwrapping method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1083375C (en) * 1996-03-15 2002-04-24 吉第联合股份公司 Product overwrapping method

Also Published As

Publication number Publication date
FR579242A (en) 1924-10-13

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