GB881364A - Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports - Google Patents

Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports

Info

Publication number
GB881364A
GB881364A GB159059A GB159059A GB881364A GB 881364 A GB881364 A GB 881364A GB 159059 A GB159059 A GB 159059A GB 159059 A GB159059 A GB 159059A GB 881364 A GB881364 A GB 881364A
Authority
GB
United Kingdom
Prior art keywords
relating
mine roof
particularly applicable
hydraulic ram
roof supports
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
GB159059A
Inventor
Jeffrey William Seddon
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.)
Gullick Ltd
Original Assignee
Gullick Ltd
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 Gullick Ltd filed Critical Gullick Ltd
Priority to GB159059A priority Critical patent/GB881364A/en
Priority to FR813683A priority patent/FR1245142A/en
Publication of GB881364A publication Critical patent/GB881364A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
  • Supports For Pipes And Cables (AREA)

Abstract

881,364. Mine roof supports. GULLICK Ltd. Dec. 10, 1959 [Jan. 16, 1959], No. 1590/59. Class 20(2) A self-advancing roof support comprises two base members 10, 11 carrying props 12 and roofing bars and each having hydraulic rams 14, 16 connected by a cable 19 passing round an anchorage 20 on a conveyer 21. At each advance step only one of the supports is moved from the rear position, e.g. 10 to the forward position 10b by releasing two props 12 and operation of both rams.
GB159059A 1959-01-16 1959-01-16 Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports Expired GB881364A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB159059A GB881364A (en) 1959-01-16 1959-01-16 Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports
FR813683A FR1245142A (en) 1959-01-16 1959-12-21 Hydraulic ram devices particularly applicable to mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB159059A GB881364A (en) 1959-01-16 1959-01-16 Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports

Publications (1)

Publication Number Publication Date
GB881364A true GB881364A (en) 1961-11-01

Family

ID=9724577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB159059A Expired GB881364A (en) 1959-01-16 1959-01-16 Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports

Country Status (2)

Country Link
FR (1) FR1245142A (en)
GB (1) GB881364A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146829B (en) * 1960-04-27 1963-04-11 Gewerk Eisenhuette Westfalia Moving hydraulic support frame
US3197965A (en) * 1961-01-10 1965-08-03 Electro Hydraulies Ltd Self-advancing mine roof supports
FR1303511A (en) * 1961-07-22 1962-09-14 Mines Domaniales De Potasse Telescopic extension system with hydraulic lift for supporting elements in size
DE1241392B (en) * 1965-02-03 1967-06-01 Stamicarbon Longwall mining

Also Published As

Publication number Publication date
FR1245142A (en) 1960-11-04

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