GB797673A - Couplings between lagging irons for mines - Google Patents

Couplings between lagging irons for mines

Info

Publication number
GB797673A
GB797673A GB2348/55A GB234855A GB797673A GB 797673 A GB797673 A GB 797673A GB 2348/55 A GB2348/55 A GB 2348/55A GB 234855 A GB234855 A GB 234855A GB 797673 A GB797673 A GB 797673A
Authority
GB
United Kingdom
Prior art keywords
tongue
lagging
fork
pin
iron
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
GB2348/55A
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 GB797673A publication Critical patent/GB797673A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/18—Locks
    • B41J5/20—Locks for subsidiary keys, e.g. for shift keys
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/43—Details of wedges
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32114—Articulated members including static joint
    • Y10T403/32221—Articulate joint comprises pivoted clevis or channel bar
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted

Abstract

797,673. Mine roof supports. GROETSCHEL, K. M. Jan. 26, 1955 [Jan. 29, 1954; April 3, 1954; May 20, 1954; Sept. 18, 1954], No. 2348/55. Class 20(2) Lagging irons 1, 4, having tongue and fork pivotal connection one with the other, are locked in relative angular disposition by a transversely movable locking element 6 passing through the tongue and fork portions, the locking element being held by a safety device, preferably located in the root of the fork, and the locking element 6 also having at least one oblique rib 7 one face 11 of which co-operates with one face 10 on the end of the tongue 2 in one position of the lagging iron 1 and another face 13 of which co-operates with a second face 12 on the end of the tongue when the lagging iron is turned through 180 degrees. The safety device consists of a screw 18 carrying a rubber insert 20 and a cup shaped reinforcement 19 which bears against the locking element 6. To facilitate coupling the lagging irons 1, 4 together, a removable pin 27, Fig. 7, in the fork of the lagging iron 4 serves as a fulcrum engageable by a recess 24 in the tongue of the lagging iron 1, about which fulcrum the lagging iron 1, may be swung upwardly. Markers 28, 28<SP>1</SP> and 29 are provided in the tongue and fork to indicate when the pivot holes in the tongue and fork are correctly aligned to receive the pivot pin 5 or an abutment pin 31 may be removably inserted in holes 30 or 30<SP>1</SP> to limit movement of the lagging iron 1 beyond the positions wherein the pivot holes for the pin 5 are in alignment. The Specification also describes several forms of spring loaded means which can be applied to the pivot pin 5 to push the pin into the pivot holes when the holes move into alignment, this means also being applicable in the process of dismantling the lagging irons..The locking elements may be straight or may be curved as shown chain dotted in Fig. 2. The single rib 7 may be replaced by a pair of parallel ribs, Fig. 10 (not shown), which embrace the tongue on the lagging iron 1 or a single rib may be divided by a central gap into two parallel offset parts. The locking element and pivot pin may be of hollow construction as shown at 45, 46 in Fig. 5 to provide increased play if overload takes place. Interchangeable locking elements with a double rib and interchangeable parts having the requisite recesses therein for mounting on the tongue, may be provided. Specification 769,430 is referred to.
GB2348/55A 1954-01-29 1955-01-26 Couplings between lagging irons for mines Expired GB797673A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE797673X 1954-01-29
DEG14124A DE1090613B (en) 1954-01-29 1954-04-03 Method and device for coupling and / or locking or uncoupling and / or unlocking the locks of joint caps or the like connected by such interconnected.

Publications (1)

Publication Number Publication Date
GB797673A true GB797673A (en) 1958-07-09

Family

ID=25948572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2348/55A Expired GB797673A (en) 1954-01-29 1955-01-26 Couplings between lagging irons for mines

Country Status (5)

Country Link
US (1) US2959924A (en)
BE (1) BE535250A (en)
DE (2) DE1090613B (en)
FR (1) FR1121012A (en)
GB (1) GB797673A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149679B (en) * 1960-04-01 1963-06-06 Karl M Groetschel Dipl Ing Device for automatic locking and unlocking of self-supporting caps to be plucked

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163011A (en) * 1960-11-14 1964-12-29 Karl M Groetschel Connection for lagging irons
US3506073A (en) * 1967-04-27 1970-04-14 Allis Chalmers Mfg Co Folding gang lock
US5813629A (en) * 1996-04-10 1998-09-29 Cabrera; Carlos Parra Airplane stretcher system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB668397A (en) * 1948-05-05 1952-03-19 Groetschel Karl Maria A method and apparatus for provisionally supporting the working faces of mines or the like
DE800077C (en) * 1948-11-13 1950-09-01 Willi Hansen Device for robbing iron pit stamps u. like
DE801930C (en) * 1949-03-27 1951-01-29 Mannesmann Ag Securing for clamping wedges at pit stamps
BE501784A (en) * 1949-10-18
DE897085C (en) * 1949-11-26 1953-11-19 Hans Gerlach Dipl Ing Pit construction for mining operations
DE861092C (en) * 1950-06-03 1952-12-29 Ludwig Vanwersch Caps for pit lining and methods of making the same
DE839484C (en) * 1950-09-02 1952-05-19 Gutehoffnungshuette Oberhausen Clamp and robbery wedge for pit stamp
BE516921A (en) * 1952-01-16
LU32099A1 (en) * 1952-05-31
BE531878A (en) * 1952-10-01
DE952976C (en) * 1953-01-28 1956-11-22 Karl Maria Groetschel Dipl Ing Swivel jointed cup irons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149679B (en) * 1960-04-01 1963-06-06 Karl M Groetschel Dipl Ing Device for automatic locking and unlocking of self-supporting caps to be plucked

Also Published As

Publication number Publication date
US2959924A (en) 1960-11-15
BE535250A (en)
DE199149C (en)
DE1090613B (en) 1960-10-13
FR1121012A (en) 1956-07-19

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