Durkopp Adler Aktiengesellschaft

Markus Richter

Christoph Heckner

Thomas Krumme

Frank Breder

Artur Hinkelmann

Alexander Penner

A sewing machine with a hook () that is drivable in rotation about a vertical axis comprises a bobbin case () with a lifter cam (). A case lifter () is provided, having a sensing lever () and a lifter lever () that bears against a lifter cam (). The sensing lever rests on a cam face () of an axial cam disk () which is mounted on the transmission shaft that actuates a hook-driving shaft ().

Growing community of inventors

Detmold, Germany

Markus Richter