1. Chapter 20, Lesson 2 Inventions Change Society
Learning Objectives:
Identify and evaluate new inventions of the era.
Define mass production.
Evaluate the impact of mass production on the U.S. economy.

2. Inventions that improved communication:
New inventions improved transportation & communication networks--essential for growth of industry!
Inventions that improved communication:
Telegraph invented by Samuel Morse; almost instant messages in Morse Code.
Transatlantic telegraph invented by Cyrus Field linked the US and Europe via telegraphs

3. Telegraph is improved upon with telephone; transmits speech not just code.
Invented by Alexander Graham Bell; “Mr. Watson, come here! I want you!”It was an accident! But WOW!
Bell Telephone Company formed in 1877.

4. Other inventions that improve businesses
Typewriter- Christopher Sholes
Adding Machine- William Burroughs
The Kodak Small box camera- George Eastman
Vacuum cleaner- John Thurman

5. Thomas Edison
Edison’s workshop was in Menlo Park, New Jersey. “Wizard of Menlo Park”
Inventions:
Phonograph (music)
Motion picture projector (video)
Telephone transmitter
Storage battery
Electric light bulb
Power plants

6. Other Inventors
George Westinghouse- improved on Edison’s work and developed transformers to send electricity over distances.
Leads to powered factories, trolleys, streetlights, lights in homes
African American Inventors:
Lewis Howard Latimer- lightbulb filament.
Granville Woods- electromagnetic brake, circuit breaker.
Elijah McCoy- oiling mechanism.
Jan Matzeliger- shoe-making machine.

7. Improvements to transportation:
Henry Ford- wanted to make an affordable car,
Model T- was described as “a car that anyone could afford to buy, which anyone could drive anywhere, and which almost anyone could keep in repair.”
Assembly line- pioneered by Ford; less expensive and more productive way to manufacture goods. In his case, automobile assembly line.
Mass production – result of assembly line; changed industry forever! People could produce more quantities of goods faster. Decreased cost and prices!

8. The First Airplane
Samuel Langley- American astronomer that built model airplane that was powered by a steam engine.
Wright Brothers’: Wilbur & Orville Wright- designed a plane powered by a gasoline engine.