The Marvels of Mechanics Series

Double Heart Gear Mechanism

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Clock Gear Mechanism

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Cage-type Gear Intermittent

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Sun-Earth-Moon Mechanism

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Half-rotation Gear Transmission Mechanism

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Same Direction Mechanism

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Reciprocating Mechanism

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Gear Acceleration Mechanism

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Gear Speed Changing Mechanism

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Gear Reciprocating Rotational Mechanism

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