GB414806A - Lathe centre and centre drilling attachment - Google Patents

Lathe centre and centre drilling attachment

Info

Publication number
GB414806A
GB414806A GB727133A GB727133A GB414806A GB 414806 A GB414806 A GB 414806A GB 727133 A GB727133 A GB 727133A GB 727133 A GB727133 A GB 727133A GB 414806 A GB414806 A GB 414806A
Authority
GB
United Kingdom
Prior art keywords
centre
lathe
drill
coward
screw thread
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
GB727133A
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.)
FRED MITCHELL COWARD
HUME COWARD
Original Assignee
FRED MITCHELL COWARD
HUME COWARD
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 FRED MITCHELL COWARD, HUME COWARD filed Critical FRED MITCHELL COWARD
Priority to GB727133A priority Critical patent/GB414806A/en
Publication of GB414806A publication Critical patent/GB414806A/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
    • B23B49/04—Devices for boring or drilling centre holes in workpieces

Abstract

414,806. Lathe centres and centre drills. COWARD, H., 14, Marley View, Crossflatts, and COWARD, F. M., 37, North Bank Road, Stoney Ridge, both in Bingley, Yorkshire. March 10, 1933, No. 7271. [Class 83 (iii).] For attaching a centre drill b to a lathe &c. centre a<1>, the centre is provided with a screw thread groove a having a pitch about four times its width, and the drill is mounted in a chuck b having a radial pin c engaging the screw thread. A conical bore d in the chuck engages the conical surface of the centre to locate the drill accurately.
GB727133A 1933-03-10 1933-03-10 Lathe centre and centre drilling attachment Expired GB414806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB727133A GB414806A (en) 1933-03-10 1933-03-10 Lathe centre and centre drilling attachment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB727133A GB414806A (en) 1933-03-10 1933-03-10 Lathe centre and centre drilling attachment

Publications (1)

Publication Number Publication Date
GB414806A true GB414806A (en) 1934-08-16

Family

ID=9829896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB727133A Expired GB414806A (en) 1933-03-10 1933-03-10 Lathe centre and centre drilling attachment

Country Status (1)

Country Link
GB (1) GB414806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112784Y1 (en) * 1969-01-29 1976-04-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112784Y1 (en) * 1969-01-29 1976-04-06

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