Illustration showing Dome supported on columns

Illustration showing Dome supported on columns, standing on a base. Wound round four columns are two parallel inclined rails down which a ball rolls. When it reaches the bottom it is guided into an Archimedean screw which raises the ball on the top of its run again. In the base is the clock driving mechanism that turns the Archimedean screw and operates the dials. Prom Gas-part Grollier de Serviere Rec-euil d'Ouvrages Curieux de Math-ematique et de Mecanique, ou Description de Cabinet de Monsieur Grollier de Serviere, Lyon, 1719

1719 Archimedean Description Dials Guided Inclined Lyon Mecanique Mechanism Monsieur Operates Parallel Prom Rails Raises Reaches Screw Supported Turns Wound

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