公开(公告)号：US4252231A

公开(公告)日：1981-02-24

申请号：US966254

申请日：1978-12-04

申请人： Earl W. Powers ,  Thomas L. Baker

发明人： Earl W. Powers ,  Thomas L. Baker

IPC分类号： B22C25/00 ,  B22C21/06

CPC分类号： B22C25/00 ,  Y10S414/107

摘要： The specification discloses a bottom board feeder apparatus for feeding bottom boards onto the top surface of mold boxes of varying heights. The bottom boards are supplied in succession to the apparatus by a first conveying line. The mold boxes are supplied in succession to a board receiving position adjacent the apparatus by a second conveying line. The apparatus includes a proximity sensor for detecting the height of a mold box in the board receiving position and an elevating mechanism responsive to the sensor for raising a bottom board so that the bottom surface of the board is at least as high as the top surface of the box. The apparatus also includes a shuttle mechanism for pushing the board onto the top surface of the box after the board has been raised. A control system including electrical and hydraulic circuits is provided for automatically controlling the cyclical operation of the apparatus.

摘要翻译： 该说明书公开了一种用于将底板馈送到不同高度的模具箱的顶表面上的底板进给装置。 底板通过第一输送线连续地供给设备。 模具盒通过第二输送线连续供应到与装置相邻的板接收位置。 该装置包括用于检测模板盒在板接收位置的高度的接近传感器和响应于用于升高底板的传感器的升降机构，使得板的底表面至少与顶板的顶表面一样高 盒子。 该装置还包括一个穿梭机构，用于在板被升高之后将板推到盒的顶表面上。 提供了包括电气和液压回路的控制系统，用于自动控制装置的循环操作。

公开(公告)号：US4262730A

公开(公告)日：1981-04-21

申请号：US113510

申请日：1980-01-21

申请人： Earl W. Powers

发明人： Earl W. Powers

IPC分类号： B22C5/12 ,  B22C15/08 ,  B22C19/00 ,  B22C25/00 ,  B22C15/02 ,  B22C11/02

CPC分类号： B22C19/00 ,  B22C15/08 ,  B22C25/00 ,  B22C5/12

摘要： The specification discloses a strike off apparatus for leveling and compacting mounds of sand extending above the upper edges of open-top mold boxes of varying heights carried in succession along a pathway. A pair of pivotally supported rollers extend across the pathway. A sensor determines the height of a sand mound in a mold box before it reaches the rollers. An elevating mechanism responsive to the sensor adjusts the rollers to a height so that they level and compact the sand mound as the mold box is carried thereunder. A control system including electrical and hydraulic circuits is provided for automatically controlling the cyclical operation of the apparatus.

摘要翻译： 该说明书公开了一种用于使沿着路径连续承载的不同高度的敞开式模具箱的上边缘上方延伸的沙子的平整和压实砂的装置。 一对可枢转地支撑的辊子跨过通道延伸。 传感器确定模具盒中的沙丘到达滚筒之前的高度。 响应于传感器的升降机构将辊子调整到一个高度，使得当模具盒被运送到其上时，它们使砂土平整并压实。 提供了包括电气和液压回路的控制系统，用于自动控制装置的循环操作。

公开(公告)号：US4371293A

公开(公告)日：1983-02-01

申请号：US177854

申请日：1980-08-14

申请人： Raymond J. Wilcox ,  Earl W. Powers

发明人： Raymond J. Wilcox ,  Earl W. Powers

IPC分类号： E21D21/00

CPC分类号： E21D21/0086

摘要： A bearing plate for supporting a portion of a mine roof or similar surface. The bearing plate includes a substantially planar, roof-bearing portion having a roof-bearing surface. Also included is a substantially planar bolt-head bearing surface. The bolt-head bearing surface includes a concentrically located aperature adapted to receive a roof bolt having a bolt head. The bolt-head bearing surface is spaced from the planar roof-bearing portion and is substantially parallel to the roof-bearing surface. A vertical wall extends from the bolt-head bearing surface about its outer periphery. A reinforcing wall extends radially outward from the distal end of the vertical wall and merges with the roof-bearing portion. The reinforcing wall defines a first frusto-conical portion, the base of which is conterminous with the roof-bearing portion, and a second frusto-conical portion, the base of which merges with the distal end of the first frusto-conical portion. The diameter of the base of the second frusto-conical portion is less than the diameter of the distal end of the first frusto-conical portion. The roof bearing surface of the bearing plate, when in use, supports a portion of the mine roof in response to a bearing force applied to the bolt-head bearing surface by the roof bolt. Some embodiments of the subject bearing plate contain embossed reinforcing ribs and dimples in the planar bearing portion.

摘要翻译： 用于支撑矿顶或类似表面的一部分的支承板。 承载板包括具有屋顶承载表面的基本上平面的屋顶承载部分。 还包括大致平面的螺栓头支承面。 螺栓头支承表面包括适于接收具有螺栓头的顶部螺栓的同心定位的温度。 螺栓头支承表面与平面屋顶承载部分间隔开并且基本上平行于屋顶承载表面。 垂直壁从螺栓头支承表面围绕其外周延伸。 加强壁从垂直壁的远端径向向外延伸并与屋顶承载部分合并。 加强壁限定了第一截头圆锥形部分，其基部与屋顶承载部分相连，并且第二截头圆锥形部分的第二截头圆锥形部分与第一截头圆锥形部分的远端合并。 第二截头圆锥形部分的基部的直径小于第一截头圆锥形部分的远端的直径。 当使用时，承载板的屋顶支承表面响应于由顶部螺栓施加到螺栓头支承表面的承受力而支撑矿顶部的一部分。 主体承载板的一些实施例在平面轴承部分中包含压花加强肋和凹坑。

公开(公告)号：US4518282A

公开(公告)日：1985-05-21

申请号：US297011

申请日：1981-08-27

申请人： Raymond J. Wilcox ,  Earl W. Powers

发明人： Raymond J. Wilcox ,  Earl W. Powers

IPC分类号： E21D21/00

CPC分类号： E21D21/0086

摘要： A bearing plate for supporting a portion of a mine roof or similar surface. The bearing plate includes a substantially planar, roof-bearing portion having a roof-bearing surface. Also included is a substantially planar bolt-head bearing surface. The bolt-head bearing surface includes a concentrically located aperture adapted to receive a roof bolt having a bolt head. The bolt-head bearing surface is spaced from the planar roof-bearing portion and is substantially parallel to the roof-bearing surface. A wall extends at an angle from the bolt-head bearing surface about its outer periphery. A reinforcing wall extends radially outward from the distal end of the angled wall and merges with the roof-bearing portion. The reinforcing wall defines a frusto-conical portion, the base of which is conterminous with the roof-bearing portion, and a cylindrical portion, the base of which merges with the distal end of the frusto-conical portion. The diameter of the base of the cylindrical portion is less than the diameter of the distal end of the frusto-conical portion. The roof bearing surface of the bearing plate, when in use, supports a portion of the mine roof in response to a bearing force applied to the bolt-head bearing surface by the roof bolt.

摘要翻译： 用于支撑矿顶或类似表面的一部分的支承板。 承载板包括具有屋顶承载表面的基本上平面的屋顶承载部分。 还包括大致平面的螺栓头支承面。 螺栓头支承表面包括适于接收具有螺栓头的顶部螺栓的同心定位的孔。 螺栓头支承表面与平面屋顶承载部分间隔开并且基本上平行于屋顶承载表面。 一个壁与螺栓头支承表面围绕其外周边成一定角度延伸。 加强壁从成角度的壁的远端径向向外延伸并与屋顶承载部分合并。 加强壁限定了截头圆锥形部分，其基部与屋顶承载部分相连，圆柱形部分的底部与截头圆锥形部分的远端合并。 圆柱形部分的基部的直径小于截头圆锥形部分的远端的直径。 当使用时，承载板的屋顶支承表面响应于由顶部螺栓施加到螺栓头支承表面的承受力而支撑矿顶部的一部分。