GB1449583A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB1449583A
GB1449583A GB937574A GB937574A GB1449583A GB 1449583 A GB1449583 A GB 1449583A GB 937574 A GB937574 A GB 937574A GB 937574 A GB937574 A GB 937574A GB 1449583 A GB1449583 A GB 1449583A
Authority
GB
United Kingdom
Prior art keywords
support
mine roof
gate
roof supports
opening
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
GB937574A
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 Dobson Ltd
Original Assignee
Gullick Dobson 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 Dobson Ltd filed Critical Gullick Dobson Ltd
Priority to GB937574A priority Critical patent/GB1449583A/en
Priority to DE19752501555 priority patent/DE2501555B2/en
Publication of GB1449583A publication Critical patent/GB1449583A/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
    • E21D23/0082—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor specially adapted for vertical or steep gradient seams
    • 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
    • E21D23/04—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
    • E21D23/0472—Supports specially adapted for people walking or transporting material

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

1449583 Mine roof supports GULLICK DOBSON Ltd 29 Oct 1974 [25 Jan 1974 1 March 1974] 46641/74 and 9375/74 Heading E1P In a mine roof support 10 and especially an advancing support suitable 'for an inclined seam and wherein the support has an opening underneath its canopy to define a walkway 18, the support is provided with a gate or gates across the said opening to prevent a fall of debris into the workings or deflect, it into the good side. The gate opens in one direction only and is weighted or spring-loaded into the closed position. The gate may be mounted on pintle hinges and is of mesh or open-work construction.
GB937574A 1974-01-25 1974-03-01 Mine roof supports Expired GB1449583A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB937574A GB1449583A (en) 1974-01-25 1974-03-01 Mine roof supports
DE19752501555 DE2501555B2 (en) 1974-01-25 1975-01-16 STRUCTURAL STRUCTURE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4664174 1974-01-25
GB937574A GB1449583A (en) 1974-01-25 1974-03-01 Mine roof supports

Publications (1)

Publication Number Publication Date
GB1449583A true GB1449583A (en) 1976-09-15

Family

ID=26242893

Family Applications (1)

Application Number Title Priority Date Filing Date
GB937574A Expired GB1449583A (en) 1974-01-25 1974-03-01 Mine roof supports

Country Status (1)

Country Link
GB (1) GB1449583A (en)

Similar Documents

Publication Publication Date Title
ES232127U (en) Roof hinged door in an automobile
FR2380400A1 (en) ROLLING GATE, ROLLING DOOR, JALOUSIE, ETC.
FR2499914B1 (en) CAR OPENING ROOF WITH SLIDING AND LIFTING PANEL
EP0340483A3 (en) Vehicle door with window pane
ES424048A1 (en) Window regulator mechanism
FR2399524A1 (en) LUCARNE SLIDING AND TILTING
FR2335666A1 (en) LUCARNE
GB1429022A (en) Flashing for skylights installed in an inclined roof system designed for recording and reading the tariff
FR2249233B1 (en)
GB1449583A (en) Mine roof supports
DE2960569D1 (en) Pivot for wings of windows, doors or the like arranged to be both swingable about a vertical axis and tiltable about a horizontal axis
NL183203C (en) LONG-DIRECTION SLIDING AND PROFILED ROOF TILT WITH HEAD AND SIDE CLOSURE.
FR2635798B1 (en) WATERCOURSE DAM AND, PARTICULARLY, A Cofferdam
GB1197941A (en) Sliding Doors
GB1020521A (en) Vehicle door construction
ES407395A1 (en) Doors for containers and the like
GB1287225A (en) Motor vehicle door
NO953959L (en) Arrangement for roof that can be opened
ES2019153A6 (en) A window comprising a top-hinged sash, for installation in an inclined roof.
GB1038748A (en) Improvements in vehicle roof structures
JPS5722910A (en) Weather strip with retainer sash
JPS6414491A (en) Built-up unit of weather door and "shoji" screen
GB1085719A (en) Improvements in and relating to advancing mine roof supports
ATE164916T1 (en) GRATE WITH EXTENDABLE AND RETRACTABLE JOINT STRUCTURE
FR2317468A1 (en) Sliding panel double window reinforcement sealing - with inner covering batten prestressed towards outer wing bar

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee