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Chapter 11Chapter 11Section 4Section 4
MORE TECHNOLOGICAL
ADVANCES
Who was Samuel Morse?
18
Telegraph Speeds Telegraph Speeds CommunicationCommunication
In 1832 Samuel Morse perfects the telegraph —a
device that could send information over wires
across great distances--- speeds up communication.
First message sent: “What hath God wrought”
Information is sent on a telegraph through pulses of electric current through a wire. The telegraph operator tapped a bar, telegraph key, that controlled the length of each pulse —Morse Code.
Telegraph key
Morse Code is a communication system that combines dots and dashes to represent each letter of the alphabet. A short click is a dot. A long click is a dash.
Can you figure out the message?
---- -- --- – – – – - – - – - – –
- – - – – – – - – - – - – ---
1832- Morse invents telegraph
1844- telegraph wired news of pres. Nomination during
DemocraticNational Conv.
Telegraph grew with railroads- companies
strung wire poles along railroads.
Quicker communication
Increased Business Productivity
Nation ismore united
1861- first transcontinental telegraphline completed
Why did cities grow and become the center
of industry?
19
Cities grow and become the center of
industry
People immigrate from foreign
countries and ruralareas for factory
jobs
Water powered factories are
replacedby steam
powered factories
Business owners could now build
factories anywhere
Companies begin tobuild their factoriesclose to cities and
transportationcenters.
Easy access for workers, businesses
can pay lower wages, shipping
costs lowered
By 1860 New
England has as many
factories as the entire South
Who was John Deere?
20
John Deere, a blacksmith, invented the steel plow in
1837. The steel plow was able to plow through thick
soil easily. By 1846, Deere was selling 1,000 plows a
year.
Who was Cyrus
McCormick?
21
Cyrus McCormick developed the mechanical reaper in 1831. This machine quickly and efficiently cut down wheat. McCormick advertised his reaper, gave demonstrations, and let customers buy on credit.
McCormick and Deere’s inventions were used by American farmers to efficiently plant and harvest their crops
What other inventions came out of the mid- 1800s?
22
Inventions that made home life easy &
convenient
Elias Howe invented the sewing machine
Isaac Singer improved the sewing machine- cloth production and repair is easier
1830s- iceboxes, cooled by large blocks of ice, store fresh food safely for longer periods
Iron cook stoves replace cooking fires and stonehearths
1830s- matches were introduced
1849- Walter Hunt invented the safety pin
Companies mass produce products- ie. a clock in 1800 costs $50, in 1850 costs $1.50
THE ENDTHE END