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The History of
The History of
The History of
And EDM
And EDM
And EDM
Metal Disintegration
EDM machines
What does
Have to do with
1770
Joseph Priestly originally discovered the erosive effect of

electrical discharges in 1770.
Boris and Natalya Lazarenko conducted research in the USSR that led to

the development of the resistor-capacitor (R-C) circuit for EDM.


1943
1943
American Team - Harold Stark, Victor Harding and Jack Beaver made a

breakthrough in technology developing a machine to remove broken bolts

and taps by creating a machine capable of making 60 arc per second.
Harold W. Stark Patented the

Metal Disintegrator in 1945
The inital breakthrough in technology that led to this

patent worthy technology would lead to the delopment of

Die-sinker EDM as we know it today.
Harold Stark started Electro Arc in May 1946, and the

patent for these machines was approved in 1951
1960-1970
Die Sinker and Wire EDM is developed
This technology was readily accepted by most of the

world, America took longer to embrace this new

technology because the workforce and existing

technology was used widely in manufacturing
'Electrical Discharge machining' By Elman Jameson Published in 2001
Google Patents:

https://patentimages.storage.googleapis.com/87/ef/d2/f4e3143323cb0e/US2385665.pdf
Wikiwand - Electrical Discharge Machining

https://www.wikiwand.com/en/Electrical_discharge_machining
CNC Machining 101 article 'EDM Basics' http://cncmachine101.com/edm-machine-basics/
https://cnctar.hobbycnc.hu/nyarfa/EDM/szikra.pdf


References:

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The History of Electro Arc and EDM

  • 1. The History of The History of The History of And EDM And EDM And EDM
  • 3. 1770 Joseph Priestly originally discovered the erosive effect of electrical discharges in 1770. Boris and Natalya Lazarenko conducted research in the USSR that led to the development of the resistor-capacitor (R-C) circuit for EDM. 1943 1943 American Team - Harold Stark, Victor Harding and Jack Beaver made a breakthrough in technology developing a machine to remove broken bolts and taps by creating a machine capable of making 60 arc per second.
  • 4. Harold W. Stark Patented the Metal Disintegrator in 1945 The inital breakthrough in technology that led to this patent worthy technology would lead to the delopment of Die-sinker EDM as we know it today. Harold Stark started Electro Arc in May 1946, and the patent for these machines was approved in 1951
  • 5. 1960-1970 Die Sinker and Wire EDM is developed This technology was readily accepted by most of the world, America took longer to embrace this new technology because the workforce and existing technology was used widely in manufacturing
  • 6. 'Electrical Discharge machining' By Elman Jameson Published in 2001 Google Patents: https://patentimages.storage.googleapis.com/87/ef/d2/f4e3143323cb0e/US2385665.pdf Wikiwand - Electrical Discharge Machining https://www.wikiwand.com/en/Electrical_discharge_machining CNC Machining 101 article 'EDM Basics' http://cncmachine101.com/edm-machine-basics/ https://cnctar.hobbycnc.hu/nyarfa/EDM/szikra.pdf References: