| 摘要 |
PURPOSE:To eliminate a spray and reduce revolutional resistance of an oar blade provided in a gear case turned together with a drive spindle by holding said oar blade always under the vertically erected condition with a gear interlocking mechanism when the gear case is rotated. CONSTITUTION:Bearings 7 are fixedly mounted on both left and right sides of middle portion of a hull 1,and to the bearings 7 is fixedly secured unrotatably a spindle gear 8. Also, between said bearings 7 is erected a spindle 6 to which is fixed a driven ring 5. This driven ring 5 is connected to a prime mover ring 3 of a prive mover 2 through a chain 4. Also, a gear case 10 is secured fixedly to an end of the spindle 6 and provided with an oar blade 17 rotatably through an oar blade shaft 14. Further, an oar blade gear 15 is attached to the oar blade shaft 14 and connected to said spindle gear 8 through an intermediate gear 13. And the oar blade 17 is held always under the vertically erected condition by the respective gears 15, 13, 8 when the gear case 10 is rotated in the direction of arrow B. |
