US3534559A - Mine roof supports - Google Patents

Mine roof supports Download PDF

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Publication number
US3534559A
US3534559A US778642A US3534559DA US3534559A US 3534559 A US3534559 A US 3534559A US 778642 A US778642 A US 778642A US 3534559D A US3534559D A US 3534559DA US 3534559 A US3534559 A US 3534559A
Authority
US
United States
Prior art keywords
roof
bar
support
supporting member
ram
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 - Lifetime
Application number
US778642A
Other languages
English (en)
Inventor
Jeffrey William Seddon
Jack Wallwork Bell
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 Ltd
Original Assignee
Gullick 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 Ltd filed Critical Gullick Ltd
Application granted granted Critical
Publication of US3534559A publication Critical patent/US3534559A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices
    • 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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/063—Retractable cantilever extensions therefor

Definitions

  • FIG. 1 is a side elevation, partially in section, of a roof support with the extensible and retractable roof-supporting bar in its retracted position
  • FIG. 3 is a view similar to FIG. 1 but with the roofsupporting bar extended
  • FIG. 6 is a fragmentary end view of a resilient yieldable member which may be embodied in the support
  • the yielding device shown in FIGS. 6 and 7, which may be incorporated in the support above described, is in the form of a bowed leaf-spring 26 attached or loosely anchored to the roof-bar 12 by means of a stud 27 and bearing slidably on the setting means or wedge 21 which is slotted to receive the rear end of the bar 12.
  • a mine roof support comprising a floor engaging base, hydraulically extensible prop means mounted on said base, a roof-engaging structure mounted on said prop means for application thereby to a mine roof for the support thereof, a roof-supporting member, means carrying said roof-supporting member on said roof-engaging structure for forward and rearward extension and retraction, respectively, relatively thereto, to and between positions of maximum extension and retraction, a pressure-fluid ram device connected between the roof-engaging structure and the roof-supporting member and operable for the extension and retraction of the latter, setting means for applying an upward force to the roof-supporting member to set it in roof-supporting condition against a roof, and a pressure-fluid ram device operable to move said setting means between setting and release positions for the roof-supporting member.

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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Earth Drilling (AREA)
US778642A 1968-01-17 1968-11-25 Mine roof supports Expired - Lifetime US3534559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB247868 1968-01-17

Publications (1)

Publication Number Publication Date
US3534559A true US3534559A (en) 1970-10-20

Family

ID=9740268

Family Applications (1)

Application Number Title Priority Date Filing Date
US778642A Expired - Lifetime US3534559A (en) 1968-01-17 1968-11-25 Mine roof supports

Country Status (3)

Country Link
US (1) US3534559A (enrdf_load_stackoverflow)
DE (1) DE1902043A1 (enrdf_load_stackoverflow)
GB (1) GB1234661A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732699A (en) * 1970-12-02 1973-05-15 Gullick Dobson Ltd Mine roof supports
US3754402A (en) * 1970-06-26 1973-08-28 Fletcher Sutcliffe Wild Ltd Mine roof supports
US3812681A (en) * 1971-07-16 1974-05-28 Gullick Dobson Ltd Mine roof supports
US3872678A (en) * 1972-07-14 1975-03-25 Peter Shuttleworth Mine roof supports
US4512686A (en) * 1983-04-16 1985-04-23 Dowty Mining Equipment Limited Roof support suitable for use in mines
US4534681A (en) * 1982-10-12 1985-08-13 Gewerkschaft Eisenhutte Westfalia Mine roof supports
US4609308A (en) * 1983-07-12 1986-09-02 Dowty Mining Equipment Limited Roof support suitable for use in mines
US4755084A (en) * 1986-02-19 1988-07-05 Gewerkschaft Eisenhutte Westfalia Gmbh Multi-part roof-contacting structures of mine roof supports

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115984A1 (de) * 1981-04-22 1982-11-25 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Kappenanstellvorrichtung
GB2192659B (en) * 1986-07-15 1990-04-11 Gullick Dobson Ltd Mine roof support roof engaging device
GB2196371B (en) * 1986-10-15 1990-05-09 Gullick Dobson Ltd Mine roof supports

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856720A (en) * 1956-08-18 1960-12-21 Dobson Ltd W E & F Improvements in roof supports for underground mines
US3216202A (en) * 1962-11-09 1965-11-09 Gullick Ltd Roof supporting means for mines
FR1467272A (fr) * 1965-12-06 1967-01-27 Bennes Marrel Perfectionnements aux rallonges de soutènement, notamment pour les mines
FR1482298A (fr) * 1966-05-24 1967-05-26 Kloeckner Werke Ag Châssis hydraulique de soutènement pour soutènement marchant
US3333425A (en) * 1964-04-16 1967-08-01 Gullick Ltd Hydraulic mine roof supports
US3333426A (en) * 1964-04-11 1967-08-01 Gullick Ltd Self-advancing hydraulically extensible mine roof supports
GB1091602A (en) * 1964-03-10 1967-11-22 Dowty Mining Equipment Ltd Roof support suitable for use in mines
US3364683A (en) * 1964-03-31 1968-01-23 Dowty Mining Equipment Ltd Advanceable roof support suitable for use in mines
US3370431A (en) * 1965-08-03 1968-02-27 Coal Industry Patents Ltd Mine roof supports
US3381430A (en) * 1965-12-27 1968-05-07 Wico Corp Panel connector

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856720A (en) * 1956-08-18 1960-12-21 Dobson Ltd W E & F Improvements in roof supports for underground mines
US3216202A (en) * 1962-11-09 1965-11-09 Gullick Ltd Roof supporting means for mines
GB1091602A (en) * 1964-03-10 1967-11-22 Dowty Mining Equipment Ltd Roof support suitable for use in mines
US3364683A (en) * 1964-03-31 1968-01-23 Dowty Mining Equipment Ltd Advanceable roof support suitable for use in mines
US3333426A (en) * 1964-04-11 1967-08-01 Gullick Ltd Self-advancing hydraulically extensible mine roof supports
US3333425A (en) * 1964-04-16 1967-08-01 Gullick Ltd Hydraulic mine roof supports
US3370431A (en) * 1965-08-03 1968-02-27 Coal Industry Patents Ltd Mine roof supports
FR1467272A (fr) * 1965-12-06 1967-01-27 Bennes Marrel Perfectionnements aux rallonges de soutènement, notamment pour les mines
US3381430A (en) * 1965-12-27 1968-05-07 Wico Corp Panel connector
FR1482298A (fr) * 1966-05-24 1967-05-26 Kloeckner Werke Ag Châssis hydraulique de soutènement pour soutènement marchant

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754402A (en) * 1970-06-26 1973-08-28 Fletcher Sutcliffe Wild Ltd Mine roof supports
US3732699A (en) * 1970-12-02 1973-05-15 Gullick Dobson Ltd Mine roof supports
US3812681A (en) * 1971-07-16 1974-05-28 Gullick Dobson Ltd Mine roof supports
US3872678A (en) * 1972-07-14 1975-03-25 Peter Shuttleworth Mine roof supports
US4534681A (en) * 1982-10-12 1985-08-13 Gewerkschaft Eisenhutte Westfalia Mine roof supports
US4512686A (en) * 1983-04-16 1985-04-23 Dowty Mining Equipment Limited Roof support suitable for use in mines
US4609308A (en) * 1983-07-12 1986-09-02 Dowty Mining Equipment Limited Roof support suitable for use in mines
US4755084A (en) * 1986-02-19 1988-07-05 Gewerkschaft Eisenhutte Westfalia Gmbh Multi-part roof-contacting structures of mine roof supports

Also Published As

Publication number Publication date
GB1234661A (enrdf_load_stackoverflow) 1971-06-09
DE1902043A1 (de) 1969-09-04

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