NL70945C - Metal cover for mine support - Google Patents

Metal cover for mine support

Info

Publication number
NL70945C
NL70945C NL135668A NL135668A NL70945C NL 70945 C NL70945 C NL 70945C NL 135668 A NL135668 A NL 135668A NL 135668 A NL135668 A NL 135668A NL 70945 C NL70945 C NL 70945C
Authority
NL
Netherlands
Prior art keywords
metal cover
mine support
mine
support
cover
Prior art date
Application number
NL135668A
Other languages
Dutch (nl)
Inventor
Hubert Joseph Wetzels
Original Assignee
Hubert Joseph Wetzels
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 Hubert Joseph Wetzels filed Critical Hubert Joseph Wetzels
Priority to NL135668A priority Critical patent/NL70945C/en
Priority to BE485483A priority patent/BE485483A/en
Priority to FR974408D priority patent/FR974408A/en
Priority to DE1949P0039445 priority patent/DE937882C/en
Priority to DEV4526A priority patent/DE944785C/en
Application granted granted Critical
Publication of NL70945C publication Critical patent/NL70945C/en

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

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)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
NL135668A 1947-10-28 1947-10-28 Metal cover for mine support NL70945C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL135668A NL70945C (en) 1947-10-28 1947-10-28 Metal cover for mine support
BE485483A BE485483A (en) 1947-10-28 1948-10-26 Steel hood for the support of mine galleries
FR974408D FR974408A (en) 1947-10-28 1948-10-28 Steel cap for mine support system
DE1949P0039445 DE937882C (en) 1947-10-28 1949-04-10 Cap connection for pit construction, preferably for longwall construction in mine operations underground
DEV4526A DE944785C (en) 1947-10-28 1949-04-10 Cap connection for longwall mining in underground mining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL135668A NL70945C (en) 1947-10-28 1947-10-28 Metal cover for mine support

Publications (1)

Publication Number Publication Date
NL70945C true NL70945C (en) 1952-10-15

Family

ID=19866319

Family Applications (1)

Application Number Title Priority Date Filing Date
NL135668A NL70945C (en) 1947-10-28 1947-10-28 Metal cover for mine support

Country Status (4)

Country Link
BE (1) BE485483A (en)
DE (2) DE944785C (en)
FR (1) FR974408A (en)
NL (1) NL70945C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991097A (en) * 1948-07-08 1961-07-04 Vanwersch Aloys Connecting structure for beams of a roof support or the like

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977597C (en) * 1950-11-01 1967-06-22 Ludwig Vanwersch Expansion cap

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991097A (en) * 1948-07-08 1961-07-04 Vanwersch Aloys Connecting structure for beams of a roof support or the like

Also Published As

Publication number Publication date
BE485483A (en) 1949-11-13
DE944785C (en) 1956-06-21
FR974408A (en) 1951-02-22
DE937882C (en) 1956-01-19

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