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FR1318110A - Extension system for walking retaining elements - Google Patents

Extension system for walking retaining elements

Info

Publication number
FR1318110A
FR1318110A FR891743A FR891743A FR1318110A FR 1318110 A FR1318110 A FR 1318110A FR 891743 A FR891743 A FR 891743A FR 891743 A FR891743 A FR 891743A FR 1318110 A FR1318110 A FR 1318110A
Authority
FR
France
Prior art keywords
retaining elements
extension system
walking
walking retaining
extension
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
FR891743A
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.)
Rheinstahl Wanheim GmbH
Original Assignee
Rheinstahl Wanheim GmbH
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 Rheinstahl Wanheim GmbH filed Critical Rheinstahl Wanheim GmbH
Priority to FR891743A priority Critical patent/FR1318110A/en
Application granted granted Critical
Publication of FR1318110A publication Critical patent/FR1318110A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
FR891743A 1962-03-21 1962-03-21 Extension system for walking retaining elements Expired FR1318110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR891743A FR1318110A (en) 1962-03-21 1962-03-21 Extension system for walking retaining elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR891743A FR1318110A (en) 1962-03-21 1962-03-21 Extension system for walking retaining elements

Publications (1)

Publication Number Publication Date
FR1318110A true FR1318110A (en) 1963-02-15

Family

ID=8774989

Family Applications (1)

Application Number Title Priority Date Filing Date
FR891743A Expired FR1318110A (en) 1962-03-21 1962-03-21 Extension system for walking retaining elements

Country Status (1)

Country Link
FR (1) FR1318110A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1207318B (en) * 1963-07-26 1965-12-23 Roger Louis Redhaber Striding expansion team for mining operations
DE1223790B (en) * 1963-06-21 1966-09-01 Dowty Mining Equipment Ltd Extension frame with two extension frames arranged parallel to each other
DE1289806B (en) * 1963-07-02 1969-02-27 Rheinstahl Wanheim Gmbh Extension trestle
US3718265A (en) * 1970-02-24 1973-02-27 Demay Ag Lift truck for hot vessels, particularly for steel-mill converters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1223790B (en) * 1963-06-21 1966-09-01 Dowty Mining Equipment Ltd Extension frame with two extension frames arranged parallel to each other
DE1289806B (en) * 1963-07-02 1969-02-27 Rheinstahl Wanheim Gmbh Extension trestle
DE1289806C2 (en) * 1963-07-02 1973-02-01 Rheinstahl Wanheim Gmbh Extension trestle
DE1207318B (en) * 1963-07-26 1965-12-23 Roger Louis Redhaber Striding expansion team for mining operations
US3718265A (en) * 1970-02-24 1973-02-27 Demay Ag Lift truck for hot vessels, particularly for steel-mill converters

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