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Barbed Wire Fences
In 1873, people started to head west. Joseph Glidden realized that in the western frontier, normal fence materials like rocks and wood were rare and expensive. That led to the thought of barbed wire. A cheap and easy way to prevent cattle from escaping. Isaac Ellwood bought half of the order to apply for the patent, which helped Glidden to be able to afford to make the barbed wire. As an entrepreneur, barbed wire became a cheap and reliable way to prevent cattle from escaping. -
Jacob Davis
In 1873, San Francisco California, Jacob Davis invented the waist overalls, or what is today known as the blue jeans. Miners dug for coal, which was used to power trains. These miners needed strong pants to work in the miners, which is when Jacob Davis used denim and thread to make a durable pant, known as the blue jean. Jacob Davis teamed up with Levi Strauss to helped pay for the patent. He was previously a tailor, so with that background he was able to invent the blue jean. -
Alexander Graham Bell
On March 10, 1876, in Boston Massachusetts, Alexander Graham Bell sent the first ever telephone message. With western movement and trains, there was more need to be able to communicate. Alexander Graham Bell thought that there would be a possibility to send messages through wires. He was right. With Thomas A. Watson's help, a year later Alexander Graham Bell was able to send the first ever telephone message. -
The Revolving Door
In Philadelphia Pennsylvania, 1888, Theophilus Van Kannel invented the revolving door with a storm door structure. With buildings getting larger, when people opened doors, a vacuum of air flowed up through stairwells, making it hard to open the doors. Also, with constantly opening doors more heat got out. These large buildings had to pay for heat, so with the storm door structured revolving door, the air remained sealed in the building.
