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    • 23. 发明专利
      GB962576A Improvements in or relating to clamping devices 未知
    • Improvements in or relating to clamping devices
    • GB962576A
    • 1964-07-01
    • GB1766261
    • 1961-05-15
    • RHEINSTAHL GMBH WANHEIM
    • E21D15/43
    • 962,576. Telescopic pit props. RHEINSTAHL WANHEIM G.m.b.H. May 15, 1961 [May 19, 1960; Sept. 7, 1960], No. 17662/61. Heading E1E. A clamping wedge, Fig. 2, for a telescopic pit prop comprises clamping jaws 11, 12 adapted to be relatively displaced in the direction of the arrow B by wedge means 15 advanced by a clamping screw 16 against the action of a spring 19, the screw being disposed in a recess 20 in the driving head 10, 14 of the member 11. In a modification, Fig. 3, a clamping wedge 102 is advanced in the direction of the arrow A by a motor or spanner acting on a spindle 103, 104. The spindle is advanced against a spring 106 until its screwthreads 103a contact a divided nut 108 whereupon the spindle is turned to engage the nut. The nut slides along inclined strips 109 without rotating thereby tensioning springs 110 disposed between the nut and the wedge 102. Knocking back is effected by hammering on the thin end 101 of the wedge thereby resetting the device. In a second modification, Fig. 6, an outer wedge 118 is provided having hammering surfaces 118a, 118b and two transversely movable jaws 119 advanced by a clamping wedge 120a, 120b tensioned by a spindle 122 engaging a divided nut 121. The extent of the clamping wedge tension may be indicated by an indicating device.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 24. 发明专利
      DE1090613B  未知
    • DE1090613B
    • 1960-10-13
    • DEG0014124
    • 1954-04-03
    • KARL MARIA GROETSCHEL DIPL ING
    • GROETSCHEL DIPL-ING KARL MARIA
    • B41J5/20 , E21D15/43 , E21D17/086
    • 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 1 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 1 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.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 26. 发明专利
      GB797673A Couplings between lagging irons for mines 未知
    • Couplings between lagging irons for mines
    • GB797673A
    • 1958-07-09
    • GB234855
    • 1955-01-26
    • GROETSCHEL KARL MARIA
    • B41J5/20 , E21D15/43 , E21D17/086
    • 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 1 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 1 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.
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