FR1182801A - Method and device for manufacturing hollow cylinders for hydraulic mine props and similar telescopic props - Google Patents

Method and device for manufacturing hollow cylinders for hydraulic mine props and similar telescopic props

Info

Publication number
FR1182801A
FR1182801A FR1182801DA FR1182801A FR 1182801 A FR1182801 A FR 1182801A FR 1182801D A FR1182801D A FR 1182801DA FR 1182801 A FR1182801 A FR 1182801A
Authority
FR
France
Prior art keywords
props
hollow cylinders
manufacturing hollow
hydraulic mine
similar telescopic
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)
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.)
KABEL und METALLWERKE NEUMEYER
Original Assignee
KABEL und METALLWERKE NEUMEYER
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 KABEL und METALLWERKE NEUMEYER filed Critical KABEL und METALLWERKE NEUMEYER
Application granted granted Critical
Publication of FR1182801A publication Critical patent/FR1182801A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/03—Making uncoated products by both direct and backward extrusion
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1182801D 1957-09-16 1957-09-16 Method and device for manufacturing hollow cylinders for hydraulic mine props and similar telescopic props Expired FR1182801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1182801T 1957-09-16

Publications (1)

Publication Number Publication Date
FR1182801A true FR1182801A (en) 1959-06-30

Family

ID=9662680

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1182801D Expired FR1182801A (en) 1957-09-16 1957-09-16 Method and device for manufacturing hollow cylinders for hydraulic mine props and similar telescopic props

Country Status (1)

Country Link
FR (1) FR1182801A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403845A1 (en) * 1977-09-27 1979-04-20 Mannesmann Ag METHOD AND DEVICE FOR STAMPING HOLLOW BODIES CLOSED AT ONE OF THEIR ENDS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403845A1 (en) * 1977-09-27 1979-04-20 Mannesmann Ag METHOD AND DEVICE FOR STAMPING HOLLOW BODIES CLOSED AT ONE OF THEIR ENDS

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