GB999671A - Improved mine roof supports - Google Patents

Improved mine roof supports

Info

Publication number
GB999671A
GB999671A GB3394460A GB3394460A GB999671A GB 999671 A GB999671 A GB 999671A GB 3394460 A GB3394460 A GB 3394460A GB 3394460 A GB3394460 A GB 3394460A GB 999671 A GB999671 A GB 999671A
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof supports
inter
incorporating
advancing
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
GB3394460A
Inventor
Cecil Kent
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.)
N J Muschamp & Co Ltd
Original Assignee
N J Muschamp & Co 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 N J Muschamp & Co Ltd filed Critical N J Muschamp & Co Ltd
Priority to GB3394460A priority Critical patent/GB999671A/en
Publication of GB999671A publication Critical patent/GB999671A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith

Abstract

999,671. Advancing mine roof supports. N. J. MUSCHAMP & CO. Ltd. Sept. 28, 1961 [Oct. 4, 1960], No. 33944/60. Heading E1E. [Also in Division F1] An advancing mine roof support comprises a master part 1 incorporating at least one prop, a slave part 2 incorporating at least two props spaced laterally from opposite sides of the master part and inter-connected by a cross bar 12, and, an advancing cylinder and ram device 15, 13 inter-connecting the parts 1, 2 through the intermediary of the cross bar 12. The ram 13 shown is of long double ended construction but may be of short single ended form, see Figs. 2 and 3 of Provisional Specification (not shown). For details of hydraulic control (Fig. 7, see Division F1). Specification 990,787 is referred to.
GB3394460A 1960-10-04 1960-10-04 Improved mine roof supports Expired GB999671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3394460A GB999671A (en) 1960-10-04 1960-10-04 Improved mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3394460A GB999671A (en) 1960-10-04 1960-10-04 Improved mine roof supports

Publications (1)

Publication Number Publication Date
GB999671A true GB999671A (en) 1965-07-28

Family

ID=10359398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3394460A Expired GB999671A (en) 1960-10-04 1960-10-04 Improved mine roof supports

Country Status (1)

Country Link
GB (1) GB999671A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576110A (en) * 1969-05-14 1971-04-27 Gewerk Eisenhuette Westfalia Movable support assemblies for mineral mines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576110A (en) * 1969-05-14 1971-04-27 Gewerk Eisenhuette Westfalia Movable support assemblies for mineral mines

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