BE774271A - SUPERIOR PROTECTIVE SHIELD AGAINST LIGHTNING EARTHS, IN PARTICULAR FOR WALKING SUPPORT, USED ESPECIALLY AT THE BOTTOM, IN MINES - Google Patents

SUPERIOR PROTECTIVE SHIELD AGAINST LIGHTNING EARTHS, IN PARTICULAR FOR WALKING SUPPORT, USED ESPECIALLY AT THE BOTTOM, IN MINES

Info

Publication number
BE774271A
BE774271A BE774271A BE774271A BE774271A BE 774271 A BE774271 A BE 774271A BE 774271 A BE774271 A BE 774271A BE 774271 A BE774271 A BE 774271A BE 774271 A BE774271 A BE 774271A
Authority
BE
Belgium
Prior art keywords
earths
mines
protective shield
used especially
walking support
Prior art date
Application number
BE774271A
Other languages
French (fr)
Original Assignee
Gewerk Eisenhuette Westfalia
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 Gewerk Eisenhuette Westfalia filed Critical Gewerk Eisenhuette Westfalia
Publication of BE774271A publication Critical patent/BE774271A/en

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
    • E21D23/04—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
    • E21D23/0454—Trailing plates; Coal face or goaf side sprags
    • 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
BE774271A 1971-04-21 1971-10-21 SUPERIOR PROTECTIVE SHIELD AGAINST LIGHTNING EARTHS, IN PARTICULAR FOR WALKING SUPPORT, USED ESPECIALLY AT THE BOTTOM, IN MINES BE774271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712119246 DE2119246A1 (en) 1971-04-21 1971-04-21 Break deflector, especially for a gradual expansion for underground operations

Publications (1)

Publication Number Publication Date
BE774271A true BE774271A (en) 1972-02-14

Family

ID=5805299

Family Applications (1)

Application Number Title Priority Date Filing Date
BE774271A BE774271A (en) 1971-04-21 1971-10-21 SUPERIOR PROTECTIVE SHIELD AGAINST LIGHTNING EARTHS, IN PARTICULAR FOR WALKING SUPPORT, USED ESPECIALLY AT THE BOTTOM, IN MINES

Country Status (4)

Country Link
US (1) US3800546A (en)
BE (1) BE774271A (en)
DE (1) DE2119246A1 (en)
FR (1) FR2111138A5 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1429799A (en) * 1973-01-26 1976-03-24 Gullick Dobson Ltd Mine roof supports
DE2461011C2 (en) * 1974-12-21 1977-01-20 Hemscheidt Maschf Hermann ALIGNMENT DEVICE FOR THE STAMP OF HYDRAULIC TREAD SUPPORTS
GB1568967A (en) * 1976-02-06 1980-06-11 Dowty Mining Equipment Ltd Mine roof support
US4191497A (en) * 1977-07-05 1980-03-04 Gewerkschaft Eisenhutte Westfalia Mine roof supports
DE3236907A1 (en) * 1982-10-06 1984-04-12 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Support system, in particular for mining operations in inclined stratification with waste packing
DE3404925A1 (en) * 1984-02-11 1985-08-22 Bergwerksverband Gmbh, 4300 Essen Back-cantilevered bar for self-advancing support system
US5538364A (en) * 1995-02-14 1996-07-23 Huntsman; Steven D. Yieldable mine post having a double ball and socket configuration
GB2496913B (en) 2011-11-28 2018-02-21 Weatherford Uk Ltd Torque limiting device
CN108581258B (en) * 2018-05-10 2020-04-07 郑州煤矿机械集团股份有限公司 Welding method for climbing workpiece of welding robot

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE481357C (en) * 1925-11-27 1929-08-20 Albert Ilberg Device for introducing and plugging mountain backfill
FR1288550A (en) * 1961-05-05 1962-03-24 Hoesch Bergbautechnik Gmbh Backfill formwork with hydraulic support frame, especially for steep dips
DE1154061B (en) * 1962-09-14 1963-09-12 Hemscheidt Maschf Hermann Stepping hydraulic extension frame for half-height storage with floating traverse
GB1068527A (en) * 1965-04-29 1967-05-10 Dobson Ltd W E & F Improved mine roof support means
DE1278977B (en) * 1967-05-26 1968-10-03 Rheinstahl Wanheim G M B H Cap installation aid
US3576110A (en) * 1969-05-14 1971-04-27 Gewerk Eisenhuette Westfalia Movable support assemblies for mineral mines

Also Published As

Publication number Publication date
US3800546A (en) 1974-04-02
DE2119246A1 (en) 1972-11-02
FR2111138A5 (en) 1972-06-02

Similar Documents

Publication Publication Date Title
CA934559A (en) Self-propelled platform tower
IT952110B (en) IMPROVEMENT IN CATHODIC PROTECTION DEVICES FOR METALLIC BODIES
BE774271A (en) SUPERIOR PROTECTIVE SHIELD AGAINST LIGHTNING EARTHS, IN PARTICULAR FOR WALKING SUPPORT, USED ESPECIALLY AT THE BOTTOM, IN MINES
FI51533C (en) Superstructure for the furnace roof.
IL36854A0 (en) Swim ring for the upper arm
AT323985B (en) RAILING, PROTECTIVE FENCE OD.DGL.
IT952588B (en) SELF-PROPELLED VEHICLE EQUIPPED WITH SHEAR FOR LOWERING WORKS
FR2098653A5 (en) WORKS FOR PROTECTION AGAINST SNOW AVALANCHES
BE785187A (en) OVERVOLTAGE PROTECTION DEVICE
BE806978A (en) PROTECTIVE ROOF IN PARTICULAR FOR CONSTRUCTION SITES
CA854923A (en) Gyroscopic top
CH556753A (en) RACCOGLITORE-CONTENITORE PER ARCHIVIO E PROCEDIMENTO DI FABBRICAZIONE DELLO STESSO.
CH556015A (en) MINE WITH DELAYED ACTING PERCUSSION DEVICE.
OA03957A (en) Protective visor.
DE2053562B2 (en) RING BLOW ON THE SIDE CHANNEL PRINCIPLE
DK127089B (en) Protective sheath for ground cables.
CA936372A (en) Floating boom
CA852611A (en) Rain erosion protective device
ES160168Y (en) BALL PROTECTIVE CONTAINER.
NL154881B (en) LIGHTNING ARRESTER.
FR1521655A (en) Improvements to the protective skirts of support cushions used in particular in mines
CA847078A (en) Snow shovel
CA844324A (en) Weather shields for plow blades
FR1196692A (en) Helical descender, especially for lowering backfill soil, usable in particular in mines
CA856462A (en) Protective structure