Wilhelm Schnotz (Lhu Wen Kai) 吕文凯 President/Owner
1st pic: Whats the difference between fixed pivots and pivots?Your rotary movement is going the wrong direction. 2nd pic: The second drawing is hard to understand.It is too simple.
Qn 2) No labelling.
The drawing for Question 1 is a little messy. Perhaps you could increase the size while you are drawing it. For Question 2, there are no annotations to explain to us the design and how it works and how it solves the problem.