GB1437449A - Mine roof support chocks - Google Patents

Mine roof support chocks

Info

Publication number
GB1437449A
GB1437449A GB4289273A GB4289273A GB1437449A GB 1437449 A GB1437449 A GB 1437449A GB 4289273 A GB4289273 A GB 4289273A GB 4289273 A GB4289273 A GB 4289273A GB 1437449 A GB1437449 A GB 1437449A
Authority
GB
United Kingdom
Prior art keywords
roof support
mine roof
sept
chock
control device
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
GB4289273A
Other languages
English (en)
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB1437449A publication Critical patent/GB1437449A/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
    • E21D23/006—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

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)
  • Lifting Devices For Agricultural Implements (AREA)
  • Fluid-Pressure Circuits (AREA)
GB4289273A 1972-09-14 1973-09-12 Mine roof support chocks Expired GB1437449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7233815 1972-09-14

Publications (1)

Publication Number Publication Date
GB1437449A true GB1437449A (en) 1976-05-26

Family

ID=6632663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4289273A Expired GB1437449A (en) 1972-09-14 1973-09-12 Mine roof support chocks

Country Status (4)

Country Link
US (1) US3889481A (https=)
BE (1) BE795481A (https=)
FR (1) FR2200437B1 (https=)
GB (1) GB1437449A (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2700829C2 (de) * 1977-01-11 1986-04-17 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulische Ausbausteuerung
US4483644A (en) * 1982-09-15 1984-11-20 Johnson Thomas P Cantilevered mobile marine rig with hydraulic load equalizer
CN102661161B (zh) * 2012-04-10 2014-04-16 重庆友诚自动化工程技术有限公司 用于矿用液压支架控制器的编址系统及其编址方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1792610U (de) * 1956-01-27 1959-07-30 Gewerk Eisenhuette Westfalia Schreitender ausbau fuer bergmaennische gewinnungsbetriebe.
US3143862A (en) * 1958-08-11 1964-08-11 Dobson Ltd W E & F Support of roofs in mines
US3295331A (en) * 1963-04-05 1967-01-03 Gewerk Eisenhuette Westfalia Movable mining support
GB1228381A (https=) * 1967-11-08 1971-04-15

Also Published As

Publication number Publication date
AU6004873A (en) 1975-03-06
BE795481A (fr) 1973-05-29
US3889481A (en) 1975-06-17
FR2200437B1 (https=) 1982-07-30
FR2200437A1 (https=) 1974-04-19

Similar Documents

Publication Publication Date Title
GB1469918A (en) Fast exhaust circuit for hydraulic jacks
HU180014B (en) Hydraulic device for actuating gas selector valves
GB1437449A (en) Mine roof support chocks
GB1342526A (en) Grabbing apparatus
GB1529994A (en) Hydraulic controller for example for use with hydraulic mine-roof supports
GB2020768B (en) Hydraulic pressure control valve for double piping brakingsystem
GB1240004A (en) Fluid actuator system for remote control
GB1289299A (https=)
JPS5628302A (en) Speed control circuit of crane or the like
ES482866A1 (es) Dispositivo de control hidraulico para un dispositivo de re-cubrimiento de grietas y de alineacion
GB1287565A (en) Improvements in or relating to a self-advancing mine roof support
GB1374128A (en) Fluid flow control valve
GB1287748A (en) Analytical method
GB1333425A (en) Mine roof supporting systems
GB1313860A (en) Jet pipe fluid control
GB1233188A (https=)
GB1169361A (en) Improvements in Fluid Valve Means for Mine Roof Supports
GB1302744A (https=)
GB1187670A (en) Improvements in Hydraulic Systems for Machines
GB1494977A (en) Operating valve arrangements
ES363363A1 (es) Perfeccionamientos en la construccion de dispositivos de accionamiento hidraulico.
GB1088796A (en) Means for effecting correct alignment of mine roof support units
GB1512064A (en) Mechanism for moving a rotary member step-wise in either of two opposed rotary directions
GB1212797A (en) A control system for hydraulic apparatus
GB1251968A (https=)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee