Multi-layer concentric sphere processing equipment
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 袁志永
- Publication Date
- 2008-10-15
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
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Abstract
Description
Technical field:
[0001] The invention relates to a mechanical device, in particular to a multi-layer concentric sphere processing device. Background technique:
[0002] Multi-layer concentric spheres have always been carved out of ivory, and the carved spheres are also called "concentric spheres". This kind of ball set is made up of several layers of concentric and hollow balls of different sizes. Each layer is independent of each other. Each layer of balls can rotate freely. Exquisite, ingenious, and superb, it is a unique national quintessence of China. According to "Gegu Yaolun", as early as the Song Dynasty, three-layer sets of balls appeared, and they were called "guigong balls" at that time. The unique skill of hollowing out and carving ivory sets of balls was once lost, and was recreated during the Qianlong period of the Qing Dynasty, and continued to develop. The sets of balls have reached more than ten layers. In 1915, at the grand "Pacific World Panama Expositio...