Harold A List, Deceased

Title: Harold A List, Deceased: Innovator in Rail Car Technology

Introduction

Harold A List was a notable inventor whose contributions to rail car technology have left a lasting impact. Based in Baltimore, MD, he was known for his innovative approach to engineering solutions in the railway industry. His work focused on enhancing the safety and efficiency of rail car operations.

Latest Patents

Harold A List held a patent for "Constant contact side bearings with spring biased sliding wedges." This invention provided a support system for rail car bodies on multi-axle rail car trucks. The design aimed to restrain truck hunting and control car rocking, ensuring a smoother and safer ride. The patent described a bearing receiver or cage mounted on the truck bolster, which supported wedge-shaped bearing blocks on inclined surfaces. The use of biasing means, such as a long travel coil spring, maintained a consistent normal bearing force on the car body throughout the wear life of the bearings. This innovative design also included arrangements for ease of inspection and replacement of the bearing blocks.

Career Highlights

Throughout his career, Harold A List was associated with Railway Engineering Associates, Inc., where he applied his expertise in rail technology. His work contributed significantly to advancements in the field, particularly in the design and functionality of rail car components.

Collaborations

His contributions were supported by his coworker, Marie List, who served as the Executrix, ensuring that his legacy continued to be recognized and honored.

Conclusion

Harold A List's innovative spirit and dedication to improving rail car technology have made a significant mark in the industry. His patent for constant contact side bearings exemplifies his commitment to safety and efficiency in railway operations. His work continues to influence the field, showcasing the importance of innovation in engineering.