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DOUBLE PARALLEL RULING STRAIGHTEDGE MECHANISM |
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Description
Six identical pulleys 4 rotate about symmetrically located fixed axes A. Flexible link 3 runs over pulleys 4. Two parallel straightedges 1 and 2 are attached at points K to link 3. When straightedge 1 travels with translational motion downwards, straightedge 2 travels with translational motion upwards, and their edges remain parallel to axis x-x. |
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