EM 2.0 What’s in Chapter 2?

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  • We investigate how machine designers increased the operational capacity of their machines by introducing pump pressure to replace steam pressure.
  • We look at the first piston machines that used a threaded screw to help push water through the puck
  • We learn that by the end of the 1940s, machines became more ergonomic and levers were adopted, achieving more than 9 bars of pressure.
  • We find out how and when the first electric rotary pumps were introduced, giving birth to the modern espresso era in the late ’50s. 

 

 

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