Tesla's Earth Quake machinge----mechanical osicillator

[crash_uni8]

does anyone know of any plans on how to make one of these?

or is their some company that makes these mechanical oscillator's?

[esaruoho]

i see plans were written up by Walter Baumgartner & Dale Pond, for the Tesla Mechanical Oscillator - Earthquake machine. hope this helps.
an understanding of vibration, oscillation, rhythm, pulsations, frequency and resonance will help.
look very deep into John Keely, Peter Davey   and SVP / Russell stuff.