GB762750A - A wedge for use in connections for girders supporting mine roofs - Google Patents

A wedge for use in connections for girders supporting mine roofs

Info

Publication number
GB762750A
GB762750A GB1167356A GB1167356A GB762750A GB 762750 A GB762750 A GB 762750A GB 1167356 A GB1167356 A GB 1167356A GB 1167356 A GB1167356 A GB 1167356A GB 762750 A GB762750 A GB 762750A
Authority
GB
United Kingdom
Prior art keywords
girder
cotter
wedge
connections
cotters
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
GB1167356A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB762750A publication Critical patent/GB762750A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B15/00—Wheels or wheel attachments designed for increasing traction
    • B60B15/26—Auxiliary wheels or rings with traction-increasing surface attachable to the main wheel body
    • 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
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs

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)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Bridges Or Land Bridges (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
GB1167356A 1952-08-13 1953-08-13 A wedge for use in connections for girders supporting mine roofs Expired GB762750A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEV13270A DE1043256B (de) 1952-08-13 1952-08-13 Keil fuer die gelenkige Verbindung von Kappen
DEE7081A DE1035602B (de) 1952-08-13 1952-08-13 Schaleisen
DEV14000A DE1110590B (de) 1952-08-13 1958-03-06 Kappenverbindung fuer den Grubenausbau

Publications (1)

Publication Number Publication Date
GB762750A true GB762750A (en) 1956-12-05

Family

ID=42830343

Family Applications (3)

Application Number Title Priority Date Filing Date
GB1167356A Expired GB762750A (en) 1952-08-13 1953-08-13 A wedge for use in connections for girders supporting mine roofs
GB2237053A Expired GB762667A (en) 1952-08-13 1953-08-13 A wedge for use in connections for girders for supporting mine roofs
GB794859A Expired GB862783A (en) 1952-08-13 1959-03-06 Improvements in or relating to mine roof support bars and to connecting means thereof

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB2237053A Expired GB762667A (en) 1952-08-13 1953-08-13 A wedge for use in connections for girders for supporting mine roofs
GB794859A Expired GB862783A (en) 1952-08-13 1959-03-06 Improvements in or relating to mine roof support bars and to connecting means thereof

Country Status (5)

Country Link
BE (1) BE576433A (enrdf_load_stackoverflow)
DE (3) DE1043256B (enrdf_load_stackoverflow)
FR (3) FR1082249A (enrdf_load_stackoverflow)
GB (3) GB762750A (enrdf_load_stackoverflow)
NL (1) NL90361C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186014B (de) * 1960-07-04 1965-01-28 Heinrich Pierburg Fa Vorpfaendgelenkkappe, insbesondere fuer den Strebausbau

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE502676A (enrdf_load_stackoverflow) *
FR993340A (fr) * 1951-04-23 1951-11-12 Bochumer Eisen Heintzmann Dispositif de soutènement pour exploitations minières par taille

Also Published As

Publication number Publication date
DE1035602B (de) 1958-08-07
FR1082249A (fr) 1954-12-28
BE576433A (enrdf_load_stackoverflow) 1959-03-31
NL90361C (enrdf_load_stackoverflow) 1959-03-16
FR66328E (fr) 1956-06-29
FR1218277A (fr) 1960-05-10
GB862783A (en) 1961-03-15
DE1043256B (de) 1958-11-13
DE1110590B (de) 1961-07-13
GB762667A (en) 1956-12-05

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