GB644963A - New or improved method of and apparatus for forming countersunk holes in metal - Google Patents

New or improved method of and apparatus for forming countersunk holes in metal

Info

Publication number
GB644963A
GB644963A GB2247348A GB2247348A GB644963A GB 644963 A GB644963 A GB 644963A GB 2247348 A GB2247348 A GB 2247348A GB 2247348 A GB2247348 A GB 2247348A GB 644963 A GB644963 A GB 644963A
Authority
GB
United Kingdom
Prior art keywords
metal
countersunk holes
new
improved method
punches
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
GB2247348A
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 GB2247348A priority Critical patent/GB644963A/en
Publication of GB644963A publication Critical patent/GB644963A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes

Landscapes

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

Abstract

644,963. Perforating by forging. CALDWELL, S. B., and HURLEY, E. Oct. 26, 1948, No. 22473. [Class 83 (iv)] Punches.-In forming countersunk holes in sheets, a punch c makes a hole larger than the size required and a countersinking punch d countersinks the upper edge of the hole and flows metal to a smaller diameter determined by a pilot pin d<SP>1</SP>. The punches are mounted on a head a secured to a press by spigot band engage a stripper f mounted on springs g. The stripper may be secured to a lower die.
GB2247348A 1948-10-26 1948-10-26 New or improved method of and apparatus for forming countersunk holes in metal Expired GB644963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2247348A GB644963A (en) 1948-10-26 1948-10-26 New or improved method of and apparatus for forming countersunk holes in metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2247348A GB644963A (en) 1948-10-26 1948-10-26 New or improved method of and apparatus for forming countersunk holes in metal

Publications (1)

Publication Number Publication Date
GB644963A true GB644963A (en) 1950-10-18

Family

ID=10179934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2247348A Expired GB644963A (en) 1948-10-26 1948-10-26 New or improved method of and apparatus for forming countersunk holes in metal

Country Status (1)

Country Link
GB (1) GB644963A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502173B1 (en) * 2004-03-12 2007-02-15 Gassner Ges M B H & Co Kg Process to perforate sheet metal panel by initial presentation of cutter to one side followed by action of press in reverse direction
US7308814B2 (en) 2005-10-13 2007-12-18 Gassner Ges.M.B.H. & Co Kg Method for perforating a sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502173B1 (en) * 2004-03-12 2007-02-15 Gassner Ges M B H & Co Kg Process to perforate sheet metal panel by initial presentation of cutter to one side followed by action of press in reverse direction
US7308814B2 (en) 2005-10-13 2007-12-18 Gassner Ges.M.B.H. & Co Kg Method for perforating a sheet

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