Ratchets are defines as a device consisting of a wheel with a set of angled teeth in which a cog or tooth engages, allowing motion in one direction only. The ratchet types offered in Gearotic CAD do just that, plus we include the Geneva mechanism and gravity fed ratchets. Ratchets are often the backbone of many working clock mechanisms and can vary in shape and size.

The Gravity Ratchet.

The Geneva Mechanism.

The Geneva drive, also know as a Maltese Cross, is a gear mechanism that translates a continuous rotation into an intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the drive wheel advancing it by one step. The drive wheel has a raised circular blocking disc, that locks the drive wheel in position between steps.

The Geneva Mechanism in Design

The Geneva Mechanism in 3D model.

The Gravity Ratchet.

The gravity ratchet is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and tools and are amongst the simplest to make, and vary in size and look.

Gravity Ratchet slip clockwise

Gravity Ratchet slip counter clockwise

Click here to view Ratchet tutorial video on YouTube.

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