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A shot tower is a tower designed for the production of small-diameter shot balls by free fall of molten lead, which is then caught in a water basin. The shot is primarily used for projectiles in shotguns , and for ballast , radiation shielding , and other applications for which small lead balls are useful.
The lead droplets would then fall 150 feet to become spherical and cool sufficiently to become rigid. At the bottom of the tower was large kettle of water for the shot to land in, in order to complete the cooling process and provide a soft enough landing to keep it from deforming. The finished shot was then marketed to hunters, traders and ...
The tower was one of the earliest built to manufacture lead shot using the method pioneered in the 1780s by the Bristol inventor William Watts. [1] Molten lead was poured through a pierced copper plate or sieve at the top of the tower, with the droplets forming perfect spheres by surface tension during the fall; the spherical drops were then cooled in a vat of water at the base. [5]
Dubuque in 1865, the shot tower can be seen on the far right edge. Bridges on the Mississippi, at Dubuque, an 1872 wood engraving showing the tower in the center. The tower was built in 1856 to provide lead shot. The invention of the shot tower enabled economical production of many nearly perfect lead spheres of the right size to fit in a shot ...
The Phoenix Shot Tower, also known as the Old Baltimore Shot Tower, is a red brick shot tower, 234.25 feet (71.40 m) tall, located near the downtown, Jonestown (also known later as Old Town), and Little Italy communities of East Baltimore, in Maryland. When it was completed in 1828 it was the tallest structure in the United States.
The size of the lead shot that is produced is determined by the diameter of the orifice used to drip the lead, ranging from approximately 0.018 inches (0.46 mm) for #9 lead shot to about 0.025 inches (0.64 mm) for #6 or #7.0 shot, while also depending on the specific lead alloy that is used.
People eating pheasant killed by lead shot are “unwittingly eating lead, which is toxic”, according to a study. Researchers examined the carcasses of eight wild-shot common pheasants, killed ...
Halfway up there was a floor for making small lead shot. The gallery level at the top was used for making large shot. In a lecture given in 1991 (now preserved in the British Library Sound Archive) Hugh Casson, who had been the Director of Architecture for the Festival of Britain in 1951, described the tower as "an extraordinary device. It's a ...