Old Linkages 1 Perpendicular Translation Bar

Description

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, very old, but still interesting and useful. In this first mechanism, one bar (blue) describes a translation movement, while keeping perpendicular to a reference (red). Video at https://youtu.be/1OKGG3nh5ik. Scheme at https://br.pinterest.com/pin/479070479118547609.