I. Intro
During many times in history there have been discoveries that have changed human civilizations on a large scale level; but perhaps one of the most miraculous discoveries was the discovery of the crane (machine). Being used in Ancient Greece all the way up to modern day United States the crane has been helpful in the building of large buildings and etc. The first sign of cranes were invented by the Ancient Greeks in the late 6th century, and were used in the construction of tall buildings. Since this first invention improvements have been made to make the cranes mobile such as on trucks or boats. This had been a great help on all civilizations. (Crane(machine)
One of the more used cranes now a day is the claw machine in places such as arcades. Either you are trying to grab candy or stuffed animal toys the claw machine is possibly one of the most profitable arcade pieces for sale ever. With the “crane’s” joystick you are able to control the crane to go almost anywhere in the machine. Like cranes used to pick up blocks for building large buildings these cranes are used to pick up toys for a child’s enjoyment. (ClawMachinedirect.com)
II. Discovery
The early version of the crane used hoist that were powered by either a man or an animal such as a donkey. The crane was found to help move stones that men were not able to move before. As larger cranes were introduced into world, human tread wheels were also introduced. The tread wheels allowed the cranes to pick up heavier objects than ever before. Cranes were moved to loading bridges to help load and unload ships during the high middle ages. The earlier cranes were made out of wood but were taken over by cast iron and steel during the industrial revolution. Over time steam engines were found to help improve the potential for lifting heavier objects than the physical labor of both the men and animals. The modern day crane has been improved to use internal combustion engines and electric motors to increase the lifting load of the crane. (Crane(machine)
III. Biography
Archeologists have not been able to place the origin of the crane on a single, one person; but instead insist that the Ancient Greeks were the first to show signs of the first crane. There is very little information on how the idea started, but archeologists know that the first sign of the crane was c. 515 when there are large stone blocks found in Ancient Greek temples. It is also made known that the pulley on the crane replaced past ramps used to carry blocks before. The reasons of the dramatic change of the ramp system to the crane system is not fully known but is believed that the political conditions in Greece was better for smaller, more skillful building teams than larger, uneducated labor forces. (Crane(machine)
IV. Effects on Humanity/ Journal Article
The Journal Article talks about how modern building companies will use a tower crane that is attached to the building they are building. This helps when building large sky scrapers because it modifies the aerodynamics of the building while it is being built. Since the building is more aerodynamic it is able to withstand stronger winds without being knocked down. (Mara, 2010)
V. Resources
"Claw Crane Machines For Sale." Claw Crane Machines For Sale. N.p., n.d. Web. 1 May 2011.
"Crane (machine)." Wikipedia, the free encyclopedia. N.p., n.d. Web. 1 May 2011.
Mara, T. G.. "Effects of a Construction Tower Crane on the Wind Loading of a High-Rise Building ." Journal of Structural Engineering 136.11 (2010): 1. Print.
VI. Pics
http://www.google.com/imgres?imgurl=http://technabob.com/blog/wp-content/uploads/2007/07/sweet_machine.jpg&imgrefurl=http://technabob.com/blog/2007/07/28/mini-claw-machine-is-grabilicious/&usg=__fwtbsQJggJa36zBsvD_-8wk-qAk=&h=500&w=398&sz=33&hl=en&start=0&sig2=JBTr01mqWcvOuGTqb1tfAQ&zoom=1&tbnid=K6APp5xU8BxJTM:&tbnh=156&tbnw=125&ei=SQO-TfCfOoX30gHluOSmBg&prev=/search%3Fq%3Dclaw%2Bmachine%26hl%3Den%26biw%3D1676%26bih%3D865%26gbv%3D2%26tbm%3Disch&itbs=1&iact=rc&dur=129&page=1&ndsp=37&ved=1t:429,r:1,s:0&tx=124&ty=63
http://www.google.com/imgres?imgurl=http://www.construction-machine.org/wp-content/uploads/2009/08/Tower-crane-in-the-air.jpg&imgrefurl=http://www.construction-machine.org/category/crane-truck/&usg=__cerUDJZLxyembwXk1Q9wFrOVIcs=&h=1118&w=800&sz=138&hl=en&start=0&sig2=R2uiuEXS1XvlKUM0qdMkjQ&zoom=1&tbnid=JUMLCLJBRKXZrM:&tbnh=169&tbnw=139&ei=gwO-TdbdI8OU0QHYoK22Bg&prev=/search%3Fq%3Dtower%2Bcrane%26hl%3Den%26biw%3D1676%26bih%3D865%26gbv%3D2%26tbm%3Disch&itbs=1&iact=rc&dur=127&page=1&ndsp=33&ved=1t:429,r:11,s:0&tx=87&ty=43
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