Which inventions were eventually abandoned?

Tumbleweed unicycles, landlubber swimmers, hygienic kissers... new inventions emerge in endlessly, but many of them are forgotten by people as time goes by, and both fame and fortune are lost. Let us recall these Interesting designs and a sparkle of wisdom in them.

Rolling Ball Motorcycle, May 1932

According to the design of inventor J.H. Pavers, this electric unicycle was different from more traditional means of transportation. In comparison, its wheels can roll like tumbleweeds. When driving this "rolling ball", the driver stays in a small enclosed cabin, and the cockpit itself remains in position while the wheels rotate around it.

Pusher pontoon, September 1936

With the spread of automobiles, more and more Americans could drive to ponds, beaches, and deep pools. Considering that many ordinary people cannot swim, inventors have designed many strange devices to help people float on the water. The picture above is a pontoon equipped with a propeller.

Sea Spinning Ball, September 1933

In the early 20th century, there was a rush to design wheeled ocean-going ships to cross the Atlantic. The vehicle pictured above is called the "Spinball" and was actually patented in the early 1930s. The boat uses diesel and electricity as fuel, with the engine working inside the ball and passengers sitting comfortably in an airplane-like cabin above.

Mini submarine, June 1933

At the age of 24, James Boral invented a one-man submarine in his basement. This 10-foot-long mini-submarine could Dive to a depth of 30 feet and stay there for 30 minutes at a time.

Bicycle with a Sail, February 1973

It is estimated that this plastic and aluminum sail can increase the speed of your bicycle by at least 20 miles per hour.

Diving Armor, June 1919

British Admiralty researchers and engineers invented this impressive piece of armor to overcome the pressure of the deep sea. But because the armor restricts the wearer's movement, a crane is required to lift the wearer to the surface.

Laughing gas inhaler, May 1938

This device can help dental patients inhale laughing gas for pain relief during treatment. They simply squeeze the ball and a certain amount of laughing gas is pumped into their noses from a "cylinder" mounted on their head. This is also a multi-tasking operating mode, right?

Hand-operated "carousel", June 1939

This device was put into use in Asheville, North Carolina, which was equivalent to tying up 12 ships. Come on a constantly rotating platform to train "landlubbers" on their water maneuvering skills.

Dog-powered car, September 1933

This is the invention of a French engineer. The dog powers the wheels like a hamster running in circles, while the "driver" who controls the vehicle sits comfortably in the seat. Yes, this thing looks a bit cruel, but the French Society for the Prevention of Cruelty to Animals actually approved this invention.

Handheld kissing screen, February 1920

According to reports, this screen is in the shape of a table tennis racket and is coated with bactericide, which can effectively prevent the infection of germs caused by kissing and can be cleaned Can be reused later. It sounds good, but now it seems that people would rather risk their lives than give up the joy of direct kissing.

Lazy Mirror, August 1951

Inventor Mark Cross, priced at $19.75 at the time, used a prism to adjust the reader's perspective so that they could read while lying down.