Some of the first construction tower cranes were developed by Wolffkran and Potain. Hans Liebherr developed the TK 8 after WWII to rebuild Europe. It was the first to be easily transported and set up. Other large hammer heads of the day were huge and powerful, but it took months to build them versus a two day or less turnaround.
I'll add more links to this post
http://www.kran-info.ch/bauarten.htm
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