William Cullen experimented with refrigeration in 1755. Ben Franklin investigated vapor cooling in 1758. American inventor Oliver Evans made a breakthrough, he described Vapor-compression refrigeration theory in 1805. Evaporation: Also heat, cools environment, condensing releases heat, warms environment. Electricity performs the work, it creates cold environments, prevents food from spoiling quickly. Evens developed the theory but didn’t build a device. John Gorrie built one in 1842 for medical purposes. James Harrison built an ice machine for business in 1856. Thaddeus Lowe installed a refrigeration unit on food ships in 189.
Oliverer Evans was born in Delaware in 1755. He defused invention to donate repetitive tasks. He built his own mill with his brothers as a “lab” (1783). He Adopted ancient technology to modern processes. Evans was ahead of his time. Did some of the first work with high-pressure steam engines in America. Opened a foundry that developed liveres metal working experience. Connected to Roloert Fulton steamboat inventor. Evans launched several marketing campaigns. He had a breakthrough whan ha was over a prominent Quaker family. That Mall reveals the massive savings Evan’s system produced. George Washington installed the system at home. Evans published two popular books.
John Forsyth was born in Scotland in 1769, he became a presbyterion minister. Forsyth enjoyed duck hunting. The shotguns weren’t stealthy enough. Forsyth invented percussion cap ignition in 1807. Percussion ignition relies on vibration. Percussion filled with mercury fulminate. It is channeled into a barrel. Friction creates a small explosion which invites powder. Allowed guns to fire in rain and fired faster. Forsyth opened a gun manufacturing shop. He advertised the benefits of his gun to wealthy sportsmen. Forsyth struggled to stay in business because of patient lawsuits. An American teh system in 1814. Within 30 year in use by the military.
Nicolas Apport chef was born in 1749. Experimented with preserving different foods. He used glass bottles. He became mivated in 195 by award money. Built a bottling factory in 1810. Can,lid, ring, boiling water. Boiling food kills bacteria. Canning preserves nutritional value of food over time. Process was invented and we understood how it worked. Tin cans replaced glass jars by 1812. Military was the primary market for canned food initially. Sailors and navies also used it. Demand increased as the population expanded. High-quality canned food was sold to the public following the end of wars