A few butterflies from 4-gear systems. Adding that fourth gear either alters the shape or turns that shape into a rope. I believe this is the only way to get a ropey
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hr-solr/roget15c.txt at master · hansonrobotics/hr-solr · GitHub
The Project Gutenberg eBook of Trees Worth Knowing, by Julia Ellen
Solved The gear assembly shown in Figure 4 consists of two
Bacillus - Logan - Major Reference Works - Wiley Online Library
Two gears are connected together by a chain (see
The New Yorker - April 21 2014, PDF
The Distributed Proofreaders Canada eBook of Selected Works of
Gears and Systems with both Rotation and Translation
Saucer Wisdom
200 Most Influential Musicians of the Last 25 Years
aims to design a two-stage compound reverted gear
Saucer Wisdom