| 摘要 |
PURPOSE:To secure a stable working of the recording device incorporated in a fish finder, etc. with a simple constitution, by providing a driving pin fixed to an endless belt, a sliding plate having a groove in which the driving pin slides when the pin passes through a pulley, a recording means connected to the sliding plate and others. CONSTITUTION:The endless belt 3 is stretched out between the pulleys 2 and 2 having the same diameter and supported rotatably by the parallel shafts 1 and 1. A metal fittings 4 is fixed at an area of the belt 3. A rotatable driving pin 5 is provided at the upper end part of the fittings 4, and the pin 5 fitted into the sliding groove 7 provided on the sliding plate 6. At the same time, the reciprocal stage 9 which holds a recording device can shift light on the guide shafts 8 and 8. In such constitution, a disturbance caused to the running locus of the recording device by an effect of the rocking or shock of a ship is avoided. |
