GB719170A - Improvements in or relating to propping-up devices for mines - Google Patents

Improvements in or relating to propping-up devices for mines

Info

Publication number
GB719170A
GB719170A GB21005/52A GB2100552A GB719170A GB 719170 A GB719170 A GB 719170A GB 21005/52 A GB21005/52 A GB 21005/52A GB 2100552 A GB2100552 A GB 2100552A GB 719170 A GB719170 A GB 719170A
Authority
GB
United Kingdom
Prior art keywords
propping
mines
devices
relating
aug
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
GB21005/52A
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.)
JACQUES GEORGES PERRIN
Original Assignee
JACQUES GEORGES PERRIN
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 JACQUES GEORGES PERRIN filed Critical JACQUES GEORGES PERRIN
Publication of GB719170A publication Critical patent/GB719170A/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
    • E21D23/04—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

Abstract

719,170. Propping devices for mines. PERRIN, J. G. Aug. 21, 1952 [Aug. 22, 1951], No. 21005/52. Class 20 (2) A mine propping device comprises two fluid pressure jacks I, II, secured respectively to one of the elements of a telescopic beam A, B and of a telescopic sole C, D, so that one of the jacks can support the roof whilst the other is inoperative and is moved forwards by means of a double-acting fluid pressure jack III which connects the two elements C, D, of the sole.
GB21005/52A 1951-08-22 1952-08-21 Improvements in or relating to propping-up devices for mines Expired GB719170A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR719170X 1951-08-22

Publications (1)

Publication Number Publication Date
GB719170A true GB719170A (en) 1954-11-24

Family

ID=9090923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21005/52A Expired GB719170A (en) 1951-08-22 1952-08-21 Improvements in or relating to propping-up devices for mines

Country Status (1)

Country Link
GB (1) GB719170A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138933A (en) * 1957-08-19 1964-06-30 Kemper Maxwell Fisher Method of and apparatus for driving a tunnel through and supporting earth structure
US3512364A (en) * 1967-06-19 1970-05-19 Wild A G & Co Ltd Pillar and stall mining roof support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138933A (en) * 1957-08-19 1964-06-30 Kemper Maxwell Fisher Method of and apparatus for driving a tunnel through and supporting earth structure
US3512364A (en) * 1967-06-19 1970-05-19 Wild A G & Co Ltd Pillar and stall mining roof support

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