Asset Overview
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 a straight line movement, perpendicular to a reference (red).
Video at https://youtu.be/JeTTCP14IEw.
Scheme at https://br.pinterest.com/pin/479070479118547621.