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6. 发明专利

DE976697C 未知
公开(公告)号：DE976697C
公开(公告)日：1964-03-05
申请号：DER0028256
申请日：1949-02-09
申请人： RHEINSTAHL GMBH WANHEIM , VANWERSCH ALOYS , LUDWIG VANWERSCH , PETER VANWERSCH
发明人： VANWERSCH ALOYS
IPC分类号： E21D17/086

7. 发明专利

GB909274A End to end connection for bars, especially mine roof bars 未知
公开(公告)号：GB909274A
公开(公告)日：1962-10-31
申请号：GB1862659
申请日：1959-06-01
申请人： LUDWIG VANWERSCH , ALOYS VANWERSCH , PETER VANWERSCH
IPC分类号： E21D17/086 , F16B3/00 , F16B21/18
摘要： 909,274. Mine roof supporting bars. VANWERSCH, L., VANWERSCH, A., and VANWERSCH, P. June 1, 1959 [May 30, 1958; Oct. 27, 1958], No. 18626/59. Class 20 (2). [Also in Group XXV] In bars for supporting mine roofs having end to end fork and tongue engagement and joined by a pin 3 in apertures in both bars and a wedge 4 in apertures in the fork 1 of the already positioned bar and engaging the upper inclined surface of the tongue 2 of the bar that is being positioned, to force it against the mine roof, the pin or the wedge has a friction member 5 to retard their movement. The member 5 is a spring ring surrounding the narrow end of the wedge and has projections engaging grooves 4a in the wedge which have abutments to engage the projections to prevent withdrawal of the wedge, the ring 5 being retained by a ring 6. The end of the wedge is sufficiently narrow to allow it to be passed round the tip of the tongue 2. In a modification the member 5 is not a complete ring and is secured to the bar by a rivet and in another modification a spring ring prevents rotation of the member 5. In a still further modification the pin 3 is provided with a friction member.

9. 发明专利

GB862783A Improvements in or relating to mine roof support bars and to connecting means thereof 未知
公开(公告)号：GB862783A
公开(公告)日：1961-03-15
申请号：GB794859
申请日：1959-03-06
申请人： PETER VANWERSCH , LUDWIG VANWERSCH , ALOYS VANWERSCH
IPC分类号： B60B15/26 , E21D17/086 , H01H13/36
摘要： 862,783. Mine-roof supports. VANWERSCH, P., VANWERSCH, L., and VANWERSCH, A. March 6, 1959 [March 6, 1958], No. 7948/59. Class 20(2) A connection for tongue-and-fork roof support bars 1, 2 which are symmetrical about a horizontal mid-section, is erected by inserting a pivot pin 3 into holes in the fork and into a slot 5 in the tongue and by engaging one of the wedging surfaces 6 on a non-rotating slide 4 with the tongue. When the slide is in 'mid' position, the region 8 provides clearance for the tongue to enable the bar 1 to be swung into or down from a near-horizontal position. A modified arrangement (Figs. 6, 7, 8, not shown) uses a plain hole for the pin 3 in the tongue and an auxiliary pivot pin to assist in aligning the bars to insert the main pin 3; the arrangement also allows a continuous straight line to be maintained over the upper surfaces on the bars and their joint.

10. 发明专利

GB845976A A support bar for underground workings 未知
公开(公告)号：GB845976A
公开(公告)日：1960-08-24
申请号：GB1847159
申请日：1959-05-29
申请人： LUDWIG VANWERSCH , ALOYS VANWERSCH , PETER VANWERCSH
IPC分类号： E21D17/086
摘要： 845,976. Mine-roof supports. VANWERSCH, L., VANWERSCH, A., and VANWERSCH, P. May 29, 1959 [May 30, 1958; July 25, 1958], No. 18471/59. Class 20(2) Pivot-and-wedge roof-support bars, 1, 2, preferably of tongue-and-fork form, are symmetrical about their horizontal longitudinal axes and have a single axial pivot aperture 7 at the end 1 of the first-erected bar and two alternative pivot apertures at the end 2 of the bar next to be erected, displaced to opposite sides of the axis, one (7a in other not shown) and the aperture 7 receiving a pivot 4. Axial holes 8, 8a co-operate with a wedge (not shown) driven therein to force the bar 2 against the mine-roof. The root of the fork in the end 1 is defined by a surface 21 coaxial with the aperture 7, the contour of the end 2 being so shaped as to engage the end 21a of the surface to limit clockwise rotation of the bar 2, enabling it to support the working face. The pivot 4 may be so shaped as to bear only partly on the aperture 7a so as to relieve from stress the narrow web separating the apertures 7a, 7b. In reversed assembly of the bar 2, the pivot 4 engages the apertures 7, 7b.

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