Old Linkages 9 Sylvester-Kempe

3D Model

From the book “How to Draw a Straight Line; A Lecture on Linkages”, by A.B. Kempe, London, 1877. This is a series of linkage mechanisms, really old, but still interesting and useful. In this mechanism, one bar (blue) describes an exact straight line movement, parallel to a reference (red). Video at https://youtu.be/tYU73ie6Y1A. Scheme at https://br.pinterest.com/pin/479070479118547760.