Scott Russell linkage
A Scott Russell linkage (although already patented in 1803 by watchmaker William Freemantle) gives a theoretically linear motion by using a linkage form with three portions of the links all equal, and a rolling or sliding connection. Can be used to form a right-angle change of motion, linear-to-linear.
A different form of the linkage has been used in a front wheel drive vehicle with solid rear axle to control lateral movement, and with a flexing elastomeric connection instead of the rolling or sliding connection.
- British Patent 2741, November 17, 1803
- Project Gutenberg: KINEMATICS OF MECHANISMS FROM THE TIME OF WATT, Eugene S. Ferguson
- US Patent 6179328
- Article about the Scott-Russell linkage used in the Nissan Sentra
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