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Inventions during the Progressive Era (1890-1920)

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Kayla Eastman

on 29 October 2013

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Transcript of Inventions during the Progressive Era (1890-1920)

Inventions during the Progressive Era (1890-1920)
Assembly Line
In 1913, Henry Ford (founder of Ford Motor Company) developed the first mass production assembly line technique. He installed the first moving assembly line for the mass production of the Model T using a conveyor belt. An assembly line is a manufacturing process in which parts are added to a product in a sequential order to create a finished product. Ford workers were able to produce cars faster and at a lower cost with this technique, which made their cars available at an even lower
price. In the long run, they will have sold a lot more
cars and earned a lot more money than they would
have before this invention.
The assembly line made it easier on employees by cutting the production time for 1 car from 12.5 hours to 1.5 hours, while using less manpower. It reduced production costs for cars by reducing assembly time. Employees wages were raised to $5 an hour (which was very good back then). Americans were able to afford a good quality vehicle because there were so many being produced at a
low price. They didn't need to use as manresources make the car as before, resulting in the overall price of the car being cheaper.
Electric Traffic Light
Multiple U.S. patent numbers were issued for the electric traffic light. James Hoge invented and patented manually controlled traffic lights in 1913. A year later, the American Traffic Signal Company installed them in Cleveland, Ohio. His lights used the words "stop" and "move" instead of colors. In 1917, William Ghiglieri invented and patented the first automatic traffic signal using red and green colored lights. Around 1920, William Potts, a Detroit policeman, invented (unpatented) an automatic electric traffic light system that included overhanging four-way, red, green, and yellow lights (the first to use yellow).
What are traffic lights?
Traffic Lights are signaling devices that are positioned at road intersections to control the flow of traffic.
This invention affected people in a positive way. It allowed for better traffic flow and an overall better community of drivers. People were able to get around quicker, safer, and easier. There was a significant less amount of accidents once the traffic lights were put in place. As more and more cars were being made at that time, the more traffic there was. That's why having traffic lights really helped create a safer environment for America. This invention gave ideas to many other inventors and the traffic light has evolved so much since the early 1900's. If we didn't have traffic lights, people would just be crazy drivers and do whatever they want.
Airplane:
A machine that can rise from the ground with it's own power, can fly at an even speed, and descend without damage.
The Airplane
The first airplane was invented by brothers, Orville and Wilbur Wright. They tested it several different times. On the first trial, tested by Orville, the plane flew up to 120 feet and stayed up for 12 seconds. By the fourth trial, Wilbur was able to keep it in flight for 59 seconds and get it up to 852 feet high (the most successful attempt).
Airplanes give people another way to get from place to place. They allow you to travel further distances in shorter amounts of time. It increased the amount of world travel throughout different countries and they made America not feel so isolated from the rest
of the world. Having airplanes increased trade through-
out the world. Things could be shipped on planes and
arrive in the destination much quicker. Airplanes also
started to play a huge part in military
tactics and war.
Sources
-www.history.com/this-day-in-history/first-electric-traffic-signal-installed
-inventors.about.com/od/rstartinventions/a/History-of-Roads_3.htm
-www.edn.com/electronics-blogs/edn-moments/4419285/1st-electric-traffic-light-system-installed--August-5--1914
-inventors.about.com/library/weekly/aacarsassemblya.htm
-www.pbs.org/wgbh/aso/databank/entries/dt13as.html
-library.thinkquest.org/J002604/LG-plane.html
-inventors.about.com/od/fstartinventions/a/Airplane.htm
-www.wright-brothers.org/History_Wing/History_of_the_Airplane/History_of_the_Airplane_Intro/History_of_the_Airplane_Intro.htm
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