Mechanical Principles 1930 by Ralph Steiner 4min selection

This is 4min selection of a larger work by Ralph Steiner. The original was silent, and the DVD had it set to classical music. The audio is a Minimal track with Dubstep inspiration by 3 Liquid Hz - Little Boy.Different movements:
@ 1:16 - counter mechanism
@ 2:55 - normal gears, but cut to engage on diagonals
@ 3:37 - SQUARE GEARS!
@ 3:41 - variable speed transfer
@ 3:46 - rotary to linear action with a 4 tooth cog