Nuremberg scissors
The Nuremberg scissors (also known as lazy-tongs ) are a link chain that consists of several crossed bars ( scissor levers ).
Nuremberg scissors were also called a children's toy that used to be very popular . Based on this principle, lifting tables and platforms are still built today , for example for production lines and air cargo handling .
The German mathematician Eduard Selling (1834–1920 in Munich) constructed a calculating machine based on the principle of the Nuremberg scissors. As an expert in actuarial mathematics, he developed models with which the pension system in Bavaria was reorganized and used his calculating machine for this. It was awarded the prize as the first multiplication machine at the Chicago World's Fair in 1893 . Various copies of his machine still exist in museums. However, the machine, which is complicated to operate, was of no practical importance.
It is also noteworthy that in many animated films at Cuckoo pops out of the cuckoo at a stretch scissors from the clock, while this is not the case with real Cuckoo generally.
Cultural meaning
The stretching scissors are a requirement of numerous carnival clubs.
See also
Web links
- Nuremberg Scissors in the Wolfram Demonstrations Project
- Pictures and description of Sellings calculating machine. history-computer.com (English)