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| A MECHANICAL TOY | |
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| QUESTION | |
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| ONE POSSIBLE SOLUTION | |
| This pull-along cam toy, has three heads that ‘bob up and down’. The toy is pulled along the surface, which drives each set of wheels, driving the rotation of the eccentric cam. | |
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| The mechanical toy below is based on a cam mechanism. As the toy is pulled along the heads of the ‘ducks’ move up and down. | |
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| VIEW SHOWING THE ARRANGEMENT OF CAMS. WHEELS AND SIDE REMOVED |
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| ALTERNATIVE DESIGN (SEE BELOW) | |
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As the toy is pulled along by a child, the eccentric cam rotates as it is fixed to the axle and the wheels. The heads and connecting rods move up and down as the axle and eccentric cam revolve. |
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QUESTIONS: 1.
Design a toy based on the design seen above. It must operate from cams
as it is pulled along by a young child. |
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