FR876716A - Method and machine for cutting openings in close-edged sheet metal tubes - Google Patents

Method and machine for cutting openings in close-edged sheet metal tubes

Info

Publication number
FR876716A
FR876716A FR876716DA FR876716A FR 876716 A FR876716 A FR 876716A FR 876716D A FR876716D A FR 876716DA FR 876716 A FR876716 A FR 876716A
Authority
FR
France
Prior art keywords
close
machine
sheet metal
metal tubes
cutting openings
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
Other languages
French (fr)
Inventor
Francois Giessner
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 filed Critical
Application granted granted Critical
Publication of FR876716A publication Critical patent/FR876716A/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
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR876716D 1940-12-03 1940-12-03 Method and machine for cutting openings in close-edged sheet metal tubes Expired FR876716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR876716T 1940-12-03

Publications (1)

Publication Number Publication Date
FR876716A true FR876716A (en) 1942-11-16

Family

ID=9360689

Family Applications (1)

Application Number Title Priority Date Filing Date
FR876716D Expired FR876716A (en) 1940-12-03 1940-12-03 Method and machine for cutting openings in close-edged sheet metal tubes

Country Status (1)

Country Link
FR (1) FR876716A (en)

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