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41. 发明专利

DE1141605B 未知
公开(公告)号：DE1141605B
公开(公告)日：1962-12-27
申请号：DEG0028333
申请日：1959-11-10
申请人： GERLACH KARL , HANS GERLACH DR ING
发明人： GERLACH KARL , GERLACH DR-ING HANS
IPC分类号： E21D15/28 , E21D15/43 , E21D15/58

42. 发明专利

DE1028513B 未知
公开(公告)号：DE1028513B
公开(公告)日：1958-04-24
申请号：DEC0007351
申请日：1953-03-30
申请人： ESSENER STEINKOHLENBERGWERKE A
发明人： HOEVELS DR-ING WERNER
IPC分类号： E21D15/38 , E21D15/43 , E21D15/502 , E21D15/52

43. 发明专利

DE947878C 未知
公开(公告)号：DE947878C
公开(公告)日：1956-08-23
申请号：DEG0013562
申请日：1954-01-21
申请人： GUTEHOFFNUNGSHUETTE STERKRADE
发明人： MUELLER OTMAR
IPC分类号： E21D15/42 , E21D15/43

44. 发明专利

DE934345C 未知
公开(公告)号：DE934345C
公开(公告)日：1955-10-20
申请号：DEG0014993
申请日：1954-07-28
申请人： GUTEHOFFNUNGSHUETTE STERKRADE
发明人： MUELLER OTMAR
IPC分类号： E21D15/43

45. 发明专利

FR1097017A 未知
公开(公告)号：FR1097017A
公开(公告)日：1955-06-28
申请号：FR1097017D
申请日：1954-02-26
申请人： GUTEHOFFNUNGSHUETTE STERKRADE
IPC分类号： E21D15/28 , E21D15/43 , E21D15/60

46. 发明专利

DE924171C 未知
公开(公告)号：DE924171C
公开(公告)日：1955-06-20
申请号：DEV0000549
申请日：1950-02-14
申请人： VER LEICHTMETALLWERKE GMBH
发明人： BRENNER PAUL DR-ING
IPC分类号： E21D15/00 , E21D15/38 , E21D15/42 , E21D15/43

47. 发明专利

GB697926A Improvements in or relating to props 未知
公开(公告)号：GB697926A
公开(公告)日：1953-09-30
申请号：GB1085451
申请日：1951-05-09
申请人： THEODOR BREIING , WILHEM HEISNER
IPC分类号： E21D15/43
摘要： 697,926. Pit props. BREIING. T., and HEISNER, W., [trading as SCHWARZ KOMMANDIT-GES., H.] May 9, 1951 [May 9, 1950], No. 10854/51. Class 20(ii) To maintain a uniform friction surface, the inclined surface of the spring- controlled drag wedge 17 which bears against the clamping collar 14 is recessed at the upper part 25 so that this upper part is not in contact with the collar 14 when the prop is set up or when, under. load, the drag wedge 17 moves downwardly. the recessed upper part of the wedge 17 be.ng. of approximately the same thickness as the lower part of the wedges. Relatively slidable flat plates 24 may be disposed between the wedge 17 and clamping collar 14. A cam bolt 13, cross wedge 28 and pressure piece 15 provide the initial clamping pressure. Friction linings 16, 26 are provided.

48. 发明专利

FR991406A 未知
公开(公告)号：FR991406A
公开(公告)日：1951-10-05
申请号：FR991406D
申请日：1949-07-27
申请人： RECH S IND ET MINIERES SOC ET
IPC分类号： E21D15/38 , E21D15/43 , E21D15/50

49. 发明专利

DE725270C 未知
公开(公告)号：DE725270C
公开(公告)日：1942-09-18
申请号：DEV0037069
申请日：1940-10-22
申请人： PETER VANWERSCH , ALOYS VANWERSCH
发明人： VANWERSCH PETER , VANWERSCH ALOYS
IPC分类号： E21D15/43 , E21D17/086

50. 发明专利

GB396169A Improvements in or relating to devices for use in supporting mine roots and analogous purposes 未知
公开(公告)号：GB396169A
公开(公告)日：1933-08-03
申请号：GB1022032
申请日：1932-04-09
申请人： SIDNEY BARNES
IPC分类号： E21D15/43 , E21D15/52
摘要： 396,169. Mine-roof supports. BARNES, S., 1, Meadow Lane, Coalville, Leicestershire. April 9, 1932, No. 10220. [Class 20 (ii).] A chock for supporting mine roofs and which may be used as a prop cap comprises a channelshaped body portion having guides on which are movably mounted coacting wedges the outer of which is moved relatively to the channel to project therefrom when the inner wedge is moved inwardly in a direction at right-angles to the direction of movement of the outer wedge. The device is shown in perspective view by Fig. 2 and in sectional elevation by Fig. 3, Fig. 4 being a sectional view along the line IV-IV of Fig. 3. A body portion 1 consists of a steel casting of H-section in the lower channel of which are superposed two oppositely-arranged wedges 23. The inner wedge 2 is positioned by a key 2a passed through horizontal slots 4. The outer wedge 3 is formed with a dovetail groove 9, Fig. 4, which co-operates with a tongue 10 formed on the wedge 2 to provide interlocking engagement between the wedges. The wedge 3 is also formed with grooves 11, Fig. 2, which cooperate with projections 12, Fig. 3, on the sides of the channel. The outer face of the wedge 3 may be formed with an H-shaped recess and a circular recess to fit it for use with pit-props of H or circular section. Fig. 7 shows a modified form of the invention wherein the outer wedge 3d is maintained in position by a bolt 17 passed through a hole 18 in the wedge 3d and a vertical slot 13 in the channel to permit of vertical movement of the wedge in the channel. This construction allows the wedge 3d to be swung about the bolt 17 as a pivot and to prevent the wedge 3d from swinging downwards, when the device is to be inserted between a pit-prop and a roof, spring locking means are provided. For this purpose the wedge 3d is provided with a pair of transverse spring-pressed pins 22 adapted to enter corresponding recesses in the opposite inner faces of the channel. In operation, the inner wedge is drawn outwardly to permit the outer wedge to move inwardly to collapse the device whereupon it is inserted between the upper end of the prop and the roof, or between a floor and the undercut portion of a coal seam, and the inner wedge driven inwardly so that the outer wedge makes firm contact with the opposing surface. The wedge 2 is provided with a projection 31 to receive the blows of a driving implement, and a hole 32 and notches 39 serve for the attachment of a lever used to withdraw the wedge 2 in conjunction with a pit-prop removing device of the Sylvester type.

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