The Garden of Mechanical Knowledge. Converting (A) rotary motion into (B) linear motion. Click image to enlarge.
Steppy Movement from a Smooth Cam
Interestingly, the motion derived from the smooth helical cam is jerky because the ratchet moves it in a series of 12 steps. The pin in the foreground moves back and forth picking a tooth at a time. The follower, the steel lever at top right, on which rests a brass button, is lifted in 12 […]
Sketchbook Moment No.42
Click image to enlarge. Psychology of perception. A: Necker’s Cube B: Necker’s Bicycle
Sketchbook Moment No.41
Pulseometer. Cocktail stick, blu-tak, coin. This one shows a method of amplifying the pulse in your wrist so you can see it more easily. Click image to enlarge.
Sketchbook Moment No.40
Chosen Click image to enlarge.