Four-bar Linkage with Parallelogram Straight-line Mechanism
Ellipsenlenker I. Art mit Storchschnabel
Gustav Voigt Werkstatt
Base: Width x Depth [202,90]mm; Overall: W x D x Height [207,120,299]mm
cast iron and brass on wood pedestal
For educational use only. All rights reserved by the contributor(s) and publisher(s).
This model is in essence a four-bar mechanism with a parallelogram or 'pantagraph' copying extension not unlike the Watt steam engine straight-line mechanism. The Voigt catalog calls this mechanism an 'Ellipse linkage with stork's bill', (Storchschnabel, in German) This description is not clear since the four-bar is not an exact ellipse drawing mechanism. The 'stork's bill may refer to Model S-36 which also has a parallelogram extension and looks like a pecking bird in motion.