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GB881477A - Improvements in and relating to the production of finely perforated metal sheets - Google Patents

Improvements in and relating to the production of finely perforated metal sheets

Info

Publication number
GB881477A
GB881477A GB1661/58A GB166158A GB881477A GB 881477 A GB881477 A GB 881477A GB 1661/58 A GB1661/58 A GB 1661/58A GB 166158 A GB166158 A GB 166158A GB 881477 A GB881477 A GB 881477A
Authority
GB
United Kingdom
Prior art keywords
parts
holes
relating
production
metal sheets
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
GB1661/58A
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.)
Hein Lehmann and Co AG
Hein Lehmann AG
Original Assignee
Hein Lehmann and Co AG
Hein Lehmann AG
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 Hein Lehmann and Co AG, Hein Lehmann AG filed Critical Hein Lehmann and Co AG
Publication of GB881477A publication Critical patent/GB881477A/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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/02—Stabbing or piercing, e.g. for making sieves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

881,477. Perforating. HEIN, LEHMANN & CO. A.G. Jan. 17, 1958 [Feb. 14, 1957], No. 1661/58. Class 83 (4). A tool for perforating a row of holes in a metal sheet, e.g. for making a sieve, consists of a plurality of parts 1, 9, each forming a plurality of holes, the parts 1, 9 being attached to a beam 5 movable up and down in a press or like machine and being individually adjustable up or down relative to the beam to compensate, e.g. for irregularities in the sheet. The parts 1, 9 have oversized holes through which pass bolts 8 attaching the parts 1, 9 to the beam 5. Adjusting studs 4 having ends provided with threads of different pitch engaging the beam 5 and collars 6, respectively, are provided for each end of each part 1, 9. The collars 6 engage pressure blocks 2 which bear against the parts 1, 9. A non-rigid strip 7 may be interposed between the blocks 2 and the parts 1, 9.
GB1661/58A 1957-02-14 1958-01-17 Improvements in and relating to the production of finely perforated metal sheets Expired GB881477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE881477X 1957-02-14

Publications (1)

Publication Number Publication Date
GB881477A true GB881477A (en) 1961-11-01

Family

ID=6830236

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1661/58A Expired GB881477A (en) 1957-02-14 1958-01-17 Improvements in and relating to the production of finely perforated metal sheets

Country Status (1)

Country Link
GB (1) GB881477A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784940A (en) * 1995-04-03 1998-07-28 Adolf Mohr Maschinenfabrik Gmbh & Co Kg Machine for cutting flat stock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784940A (en) * 1995-04-03 1998-07-28 Adolf Mohr Maschinenfabrik Gmbh & Co Kg Machine for cutting flat stock

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