GB760604A - Improvements in lagging irons for use in mines - Google Patents

Improvements in lagging irons for use in mines

Info

Publication number
GB760604A
GB760604A GB86154A GB86154A GB760604A GB 760604 A GB760604 A GB 760604A GB 86154 A GB86154 A GB 86154A GB 86154 A GB86154 A GB 86154A GB 760604 A GB760604 A GB 760604A
Authority
GB
United Kingdom
Prior art keywords
mines
wedge
lagging
irons
lagging irons
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
GB86154A
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
Publication of GB760604A publication Critical patent/GB760604A/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

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)
  • Surgical Instruments (AREA)
  • Clamps And Clips (AREA)

Abstract

760,604. Lagging irons for mines. GROETSCHEL, K. M. Jan. 12, 1954 [Jan. 27, 1953], No. 861/54. Class 20(2) Lagging irons in mines pivoted together by a pin 3 and locked at an angle by a wedge 4 are provided with slots 6 to accommodate the wedge when not in use. The wedge is retained in the slot by notches in flanges 14 on the wedge or by a spring in the slot. The wedge may be connected to the lagging iron by a chain.
GB86154A 1953-01-28 1954-01-12 Improvements in lagging irons for use in mines Expired GB760604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG10833A DE952976C (en) 1953-01-28 1953-01-28 Swivel jointed cup irons

Publications (1)

Publication Number Publication Date
GB760604A true GB760604A (en) 1956-11-07

Family

ID=6662586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB86154A Expired GB760604A (en) 1953-01-28 1954-01-12 Improvements in lagging irons for use in mines

Country Status (4)

Country Link
BE (2) BE521312A (en)
DE (1) DE952976C (en)
FR (2) FR1077402A (en)
GB (1) GB760604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997319A (en) * 1958-04-22 1961-08-22 Schwarz Kg Hermann Cap unit for use in connection with mining

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE199149C (en) * 1954-01-29
DE1214184B (en) * 1958-05-30 1966-04-14 Ludwig Vanwersch Securing device for wedges and hinge pins of expansion caps
DE1198310B (en) * 1958-05-30 1965-08-12 Aloys Vanwersch Expansion cap for mining operations
DE1243128B (en) * 1963-09-25 1967-06-29 Aloys Vanwersch Cap connection for Vorpfaendkappen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE804317C (en) * 1949-03-22 1951-04-19 Otto Leppak Process for creating a stamp-free mining front in iron longwall construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997319A (en) * 1958-04-22 1961-08-22 Schwarz Kg Hermann Cap unit for use in connection with mining

Also Published As

Publication number Publication date
FR1094700A (en) 1955-05-23
BE525927A (en) 1954-02-15
BE521312A (en) 1953-07-31
FR1077402A (en) 1954-11-08
DE952976C (en) 1956-11-22

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