Link dimensions:
Crank and fixed: a
Rocker: b (anchored at midpoint)
Coupler: c (joint at midpoint)
![{\displaystyle {\begin{aligned}b&<c\\[4pt]2a&<{\tfrac {1}{2}}b+{\tfrac {1}{2}}c\\[2pt]{\tfrac {1}{2}}c&<{\tfrac {1}{2}}b+2a\end{aligned}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/13d497f57a6f1006bd13a5acb4a7773e86490c7c)
Hart's inversors are two planar mechanisms that provide a perfect straight line motion using only rotary joints.[1] They were invented and published by Harry Hart in 1874–5.[1][2]
- ^ a b "True straight-line linkages having a rectlinear translating bar" (PDF).
- ^ Ceccarelli, Marco (23 November 2007). International Symposium on History of Machines and Mechanisms. ISBN 9781402022043.