Model: S38 Half “Stork’s Bill” Straight-Line Mechanism
This straight-line model has seven links and eight revolute joints counting the grounded link and without counting the connecting crank and coupler link. Without the sliding joint on the right, this linkage would have two degrees of freedom according to the mobility criterion of linkages. The slide constraint on the right removes one degree of freedom. The resulting mechanism produces the straight-line motion of the cylindrical rod on the left which, perhaps, inspired the stork’s bill name by Reuleaux. This straight-line linkage is one of thirty-nine such mechanisms in the Reuleaux-Voigt series, all inspired by James Watt’s original linkage that was used in his famous steam engines at the end of the 18th century.

Francis Moon 2004-07-00

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