| 摘要 |
PURPOSE:To perform the changing of setting of weighing values easily by holding plural pieces of weights, and mounting these by changing the respective weight stepwise. CONSTITUTION:When a motor 47 is run, its motion is transmitted to a speed change gear 48, a pinio gear 44, etc., and two pieces of elevating bars 41, 41 ascend at the same speed. Then, detaining pieces 42a abut to the small diameter parts of the step holes 35d of a weight 35a and lift the weight 35a, thereby changing the state initially loaded with he weights 35a, 35b, 35c on a balance beam 33 to the state loaded with two pieces of the weights 35, 35c, and resulting in the decreased weighing value. When the bars 41, 41 are further moved upward, the weight 35b is lifted by detaining pieces 42b, and only the weight 35c is loaded on the beam 33. In this way, it is possible to set the desired weighing value by moving the bars 41, 41 by properly driving the motor 47. |
