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GB348801A - Improvements in devices for punching holes in metal and like plates - Google Patents

Improvements in devices for punching holes in metal and like plates

Info

Publication number
GB348801A
GB348801A GB1000830A GB1000830A GB348801A GB 348801 A GB348801 A GB 348801A GB 1000830 A GB1000830 A GB 1000830A GB 1000830 A GB1000830 A GB 1000830A GB 348801 A GB348801 A GB 348801A
Authority
GB
United Kingdom
Prior art keywords
plates
devices
metal
punch
punching 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
GB1000830A
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 GB1000830A priority Critical patent/GB348801A/en
Publication of GB348801A publication Critical patent/GB348801A/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
    • B21D28/34—Perforating tools; Die holders
    • B21D28/343—Draw punches

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)

Abstract

348,801. Punching. NISCHAN, J. C., 1437, Arkansas Street, Hammond, Indiana, U.S.A. March 28, 1930, No. 10008. [Class 83 (iv).] Punches.-In a device for enlarging a hole in a sheet, a punch 4 threaded upon a drawrod 11 is rotatably mounted by a thrust bearing 15 in a die member 8. A head 14 is actuated by a wrench to pull the punch into the die to remove the punching P. The punch may be shaped as shown in the Figure. '
GB1000830A 1930-03-28 1930-03-28 Improvements in devices for punching holes in metal and like plates Expired GB348801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1000830A GB348801A (en) 1930-03-28 1930-03-28 Improvements in devices for punching holes in metal and like plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1000830A GB348801A (en) 1930-03-28 1930-03-28 Improvements in devices for punching holes in metal and like plates

Publications (1)

Publication Number Publication Date
GB348801A true GB348801A (en) 1931-05-21

Family

ID=9959691

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1000830A Expired GB348801A (en) 1930-03-28 1930-03-28 Improvements in devices for punching holes in metal and like plates

Country Status (1)

Country Link
GB (1) GB348801A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461536A1 (en) * 1979-07-23 1981-02-06 Greenlee Bros & Co CUTTING PUNCH
EP1581371A2 (en) * 2003-01-10 2005-10-05 Greenlee Textron Inc. Two piece punch with pilot hole locator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461536A1 (en) * 1979-07-23 1981-02-06 Greenlee Bros & Co CUTTING PUNCH
EP1581371A2 (en) * 2003-01-10 2005-10-05 Greenlee Textron Inc. Two piece punch with pilot hole locator
EP1581371A4 (en) * 2003-01-10 2008-04-23 Greenlee Textron Inc Two piece punch with pilot hole locator

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