FR426569A - Montant en plusieurs pièces pour boisage de mines - Google Patents

Montant en plusieurs pièces pour boisage de mines

Info

Publication number
FR426569A
FR426569A FR426569DA FR426569A FR 426569 A FR426569 A FR 426569A FR 426569D A FR426569D A FR 426569DA FR 426569 A FR426569 A FR 426569A
Authority
FR
France
Prior art keywords
timbering
mines
amount
several pieces
pieces
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
English (en)
Inventor
Otto Gruenewald
Max Gorich
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
Application granted granted Critical
Publication of FR426569A publication Critical patent/FR426569A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/34—Telescopic props with parts held relatively to each other by friction or gripping by axially- moving balls, rollers, or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/02—Details
    • H05B31/30—Starting; Igniting
    • H05B31/305—Ignition devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
FR426569D 1910-02-26 1911-02-25 Montant en plusieurs pièces pour boisage de mines Expired FR426569A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE426569X 1910-02-26

Publications (1)

Publication Number Publication Date
FR426569A true FR426569A (fr) 1911-07-10

Family

ID=6477203

Family Applications (1)

Application Number Title Priority Date Filing Date
FR426569D Expired FR426569A (fr) 1910-02-26 1911-02-25 Montant en plusieurs pièces pour boisage de mines

Country Status (2)

Country Link
FR (1) FR426569A (fr)
GB (1) GB426569A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879145A (zh) * 2015-06-05 2015-09-02 江苏中矿立兴能源科技有限公司 一种机械式可伸长并恒阻可缩高强度单体支柱

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879145A (zh) * 2015-06-05 2015-09-02 江苏中矿立兴能源科技有限公司 一种机械式可伸长并恒阻可缩高强度单体支柱

Also Published As

Publication number Publication date
GB426569A (en) 1935-04-05

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