Herbert Koehler

Title: Herbert Koehler and His Engraving Device for Printing Forms.

Introduction

Herbert Koehler is an inventor associated with Trappenkamp, Germany. His work includes a patented engraving device designed for use in a printing form engraving machine. Koehler is associated with Dr. Ing. Rudolf Hell GmbH.

Latest Patents

Koehler is credited with 1 patent, titled “Engraving Device for a Printing Form Engraving Machine.” The invention uses a rotary system with a shaft supported in a bearing and oscillated through very small angles. An engraving needle is carried on a lever attached to the shaft near the bearing.

The device’s damping mechanism is positioned between the bearing and the lever, preferably close to the lever. It applies symmetrical forces to the shaft to reduce vibration without creating bending forces. Described embodiments include fluoroplastic damping elements arranged between the shaft and a stationary support, as well as shaft-mounted rings or wings that interact with grease-filled containers.

Career Highlights

The patent reflects Koehler’s contribution to precision engraving equipment for printing forms. Its damping arrangements are designed to stabilize the engraving needle while limiting unwanted mechanical forces on the shaft.

Collaborations

Koehler’s listed coworkers include Walter Muecke and Walter Baar. His professional association with Dr. Ing. Rudolf Hell GmbH places the invention within the company’s work in printing and engraving technology.

Conclusion

Herbert Koehler’s patent describes a precision engraving device whose symmetrical damping system helps control vibration while protecting the shaft from bending forces.