| 摘要 |
A conveyor consists of a U-shaped stationary means (1) with the opening upwards. A rod-shaped means (2) may be reciprocated in said stationary means, the upper edge of said rod-shaped means (2) being lifted above the opening of the stationary means (1) upon movement in the forward direction and being lowered below this opening upon movement in the return direction. To simplify the manufacture and operation of the conveyor the rod-shaped means (2) is so connected with a rail (4), slidable in the bottom of the U-shaped stationary means (1), by means of rotatable links (3) that the rod-shaped means (2) and the rail (4) form two sides in a parallelogram whose other sides are the rotatable links (3). The rod-shaped means (2) and the rail (4) are both rotatably connected with a handle (8), which is used for displacing these two parts with respect to each other and thereby lifting or lowering the upper edge of the rod-shaped means with respect to the opening of the stationary means (1). |
