http://507movements.com/mm_119.html
The following device practices both rectilinear and uniform rotary motion. As the pinion uses its grooves to circulate the bar gear, it allows the horizontal movement of the bar. As it reaches the end of the bar gear, the pinion gear is allowed to rotate the bar through the dent presented in the grooves of the bar gear. These grooves aid in the movement of the pinion gear down the shaft as it pivots around the bar. Once down the shaft similar motion continues, however moving the bar gear in the opposite direction.
As circular motion is translated into rectilinear motion, such a device could be used by automobiles to help with steering and wheel alignment. Such gears could also be used in wheel motion or adjusting train tracks as part of rack railway systems. Furthermore, this gear could be used in manipulating cables in elevator systems today.
I found this device particularly interesting as it made use of the pinion’s circular and vertical motion to alter the direction in which a bar moved horizontally. The combination of movements and varying shapes of grooves fascinated me.
This mechanism is really cool! You mentioned that shaft that guides the pinion- I wonder what changes we would need to make to engineer a similar mechanism but with a different shaft shape? That would make for a very versatile piece that can be implemented anytime you need to move or redirect a spinning piece.
I also liked this mechanism! It looks like a jelly fish floating back and forth! I wonder what use this is for. Perhaps in a machine that needs both movements in the x and y-axis?