Harold W Stillman, Jr

Title: Harold W Stillman, Jr: Innovator in Metal Ladder Design

Introduction

Harold W Stillman, Jr. is a notable inventor based in Clarendon Hills, Illinois. He has made significant contributions to the field of ladder design, holding two patents that enhance the functionality and safety of metal ladders. His innovative approach has led to advancements that benefit both manufacturers and users alike.

Latest Patents

One of Harold's latest patents is for a metal ladder and method of fabricating the same. This design features a pair of spaced rails with web portions that include inwardly directed embossments at regular intervals. Each embossment has an opening for the insertion of tubular rungs, which are then swaged to the rail. The embossments serve as ribs that distribute the load towards the flanges, which are the stiffer parts of the rail. This design increases strength while effectively reducing web flexure and angle changes between the rungs and rails during use. The built-in stiffness allows for a reduction in web thickness, resulting in material savings. Additionally, the web portion of each rail is formed with one or more outwardly directed embossments, further enhancing the ladder's structural integrity.

Career Highlights

Harold W Stillman, Jr. is associated with Sears, Roebuck & Company, where he has applied his inventive skills to develop practical solutions in ladder manufacturing. His work has contributed to the company's reputation for quality and safety in their product offerings.

Conclusion

Harold W Stillman, Jr. is a distinguished inventor whose work in metal ladder design has led to significant improvements in safety and efficiency. His innovative patents reflect a commitment to enhancing user experience and material efficiency in ladder construction.