In 1920 the Cataract Washer allowed women to get laundry done faster because they didn't have to spend a lot of time hand washing and drying all of the clothing for the family. They just put the laundry in and did more of their work around the house. The Cataract Washer was advertised a lot when it came out, the advertisements were targeted to women because they were the only ones doing house work at the time. One add stated that "she sits and sews while the washer goes". This allowed women to get other work done while the washing machine ran.
Pop Up Toasters:
They were first produced by companies such as Armstrong Electric Co., Electro Weld Co., and Bersted Manufacturing. There were many different designs that they tested to find which would work best. Some of them were: swinging baskets, drop-open doors, and then the standard pop up model. One model by A. Mecky Co's Ledig used twin reflector dishes to toast the bread with the concentrated heat.
Ice Box Replacement:
The Refrigerator leaped in the 1920's. This is when the first affordable home refrigerator units were popular. A downfall to the early ones was they used toxic chemicals like Sulfur Dioxide or Methyl. The company that generally made them using this was General Electric Monitor Top. Other models were Electrolux Servel and they promoted their product using the phrase, "Stays silent Lasts longer".
RCA introduced the first practical black and white televisions set at the New York Worlds Fair in 1939. The bulky set was usually housed in a large wooden cabinet. The TV set had a seven inch picture set. Walt Disney introduced three color technicolor in 1932. But this technique wasn't used until major films such as "Gone with the Wind" and "The Wizard of Oz".
In 1932 Henry Ford's engineering team which began in the late 1920s worked to develop the flat head V-8 engine that displaced 221 cubic inches and wielded 65 horsepower. A later addition introduced aluminum heads and higher compression radio and enlarged the cubic inch displacement which increased horsepower to 145 by 1953. The flat head V-8 powered the 1932 Ford Coupe which is the fathered custom to hot rods today.
In 1936 Turnstile made antennas for the TV and FM broadcasting.