US

On April 19, 1932, Nora F. Hays of Wilmerding, Pennsylvania, received a patent for an improved dirt collector designed to remove moisture and debris from pressurized air systems. Her design featured a collecting chamber with a conical valve that allowed accumulated water to be discharged quickly and safely.

On November 14, 1950, Oak L. Ritter of San Francisco patented a duck toy that waddled, opened its beak, and wagged its tail when pulled. A spring made it “quack,” which could be turned off, and guards kept children’s fingers safe.

On April 10, 1928, Olivia E. Vaughan of Newark, New Jersey, was granted a patent for a novel tennis racket carrier. Her innovative design allowed the bag to hold multiple rackets while easily adjusting to their size, providing convenience and flexibility for the owner.

On August 29, 1939, Olivia Morgan Burwell of Phoenix, Arizona, received a patent for a foldable bed screen to protect sleepers from insects and animals. The design fit standard bed frames, had rounded corners for safety, and could be adjusted for partial or full coverage.

On February 6, 1917, Olivia W. Tucker of Brooklyn, New York, patented an adjustable ornamental fabric lamp shade. Designed with elastic and stay-filled bands, her shade could be fitted to fixtures of various sizes while maintaining a continuous, decorative appearance.

On May 30, 1950, Opal A. Barber of Oklahoma City, Oklahoma, obtained a patent an improved rooftop ventilator that used wind to help pull stale air out of buildings. Her design featured a rotating hood and a “bullet nose” that boosted suction for better airflow.

On May 25, 1926, Opal E. Kline of Glidden, Iowa, was granted a patent for a novel light reflector. The device was designed to provide high-quality illumination, feature a cost-effective construction, and have a uniquely shaped reflector capable of evenly lighting any circular area.

On December 17, 1940, Opal L. Reason of Waynesville, Ohio, was granted a patent for a novel device designed to help children sit comfortably in a chair. The device featured an adjustable, elongated strap that allowed the child to move freely while seated, providing both stability and comfort.

On March 1, 1949, Opal M. Gross of Denver, Colorado, received a patent for a modular cooking vessel made from rigid rings joined in a flat frame. Frusto-conical cups locked into the rings by means of exterior lugs, allowing cooks to combine any number of identical cups into a single, stable unit.

On June 24, 1941, Opal W. Chase of Little Rock, Arkansas, was granted a patent for a novel awning fan. The design aimed to create a device that was easy to attach and store while maintaining a simple yet effective construction.