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Icyball refrigerator. In the 1930s Crosley added refrigerators and other household appliances and consumer goods to his company's product line. [citation needed] Crosley's "Icyball" was an early non-electrical refrigeration device. The unit used an evaporative cycle to create cold, and had no moving parts.
A Crosley IcyBall with cold side ball on left, hot side ball on right. Icyball is a name given to two early refrigerators, one made by Australian Sir Edward Hallstrom in 1923, and the other design patented by David Forbes Keith of Toronto (filed 1927, granted 1929), [1] [2] and manufactured by American Powel Crosley Jr., who bought the rights to the device.
The first successful self-loader was the Gatling gun, a hand-cranked revolver. It was invented by Richard Jordan Gatling and fielded by the Union forces during the American Civil War. Self-loaders use energy to reload. The world's first machine gun was the Maxim gun, developed by British inventor Sir Hiram Maxim in 1884.
David Marshall Williams (November 13, 1900 – January 8, 1975) was an American firearms designer and convicted murderer who invented the floating chamber and the short-stroke gas piston. Both designs used the high-pressure gas generated in or near the breech of the firearm to operate the action of semi-automatic firearms like the M1 Carbine.
Mounted bronze guns that shot iron-fletched darts were also used in a cart style weapon that was the early hwacha. [84] Firearms seem to have been known in Japan around 1270 as proto-cannon invented in China, which the Japanese called teppō (鉄砲 lit. "iron cannon"). [85]
While being most known for inventing the Gatling gun, Gatling invented and patented a number of other inventions.His inventions include a screw propeller and a wheat drill (a planting device) in 1839, a hemp break machine in 1850, a steam plow (steam tractor) in 1857, the Gatling gun in 1861, a marine steam ram in 1862, and a motor-driven plow ().
The invention of gunpowder weapons replaced only catapults and onagers; the change was slow. Buying guns in those days was a costly affair: the cost of one gun was the equivalent of two months' pay for a skilled artisan. [53] By 1450, inventors improved the make of the gun and introduced the matchlock gun. Though inventors came with new ...
Richard Bowie Spikes (October 2, 1878 – January 22, 1963) was an African-American inventor who held several United States patents. He is credited with developing and improving inventions such as a beer tap, a modification of an automatic gear shift mechanism for motor vehicles, and a safety braking system for trucks and buses.