| 摘要 |
A turbine has an upright shaft defining and rotatable about a vertical main axis, a support plate fixed to the shaft, a plurality of upright vanes pivotal on the support plate about respective vane axes offset from and generally parallel to the main axis, and a control plate rotatable adjacent the support plate about a vertical control axis. The control plate can be displaced relative to the support plate in an adjustment direction perpendicular to the axes. Respective formations on the vanes form grooves extending radially of the respective vane axes and open toward the control plate and respective link pins on the control plate are engaged in the grooves. Respective ring gears are provided on the control and main plates, centered on the respective axes, of the same diameter, and directed toward each other. A pair of respective elongated coupling gears rotatable about parallel horizontal axes extending radially of the main axes and parallel to the adjustment direction are journaled on the shaft and mesh with each other. One of the gears meshes with the control-plate ring gear and the other gear meshes with the support-plate ring gear.
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