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Posted

I am trying to come up with some concrete dates for the four types of oscillators Emerson used.

Lever Oscillator            1909  -  ????

Ball Detent Oscillator   ????-????

Modern Oscillator        ????-1954

Buck Persons Oscillator   1955-Discontinued

Thanks all for your help,

 

Posted (edited)

09-19+

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Edited by Russ Huber
  • Like 1
Posted (edited)
3 hours ago, Rick Swanson said:

I am trying to come up with some concrete dates for the four types of oscillators Emerson used.

Lever Oscillator            1909  -  1913

Ball Detent Oscillator   1914 - early 1919

Improved Oscillator        1919 - 1954

Buck Persons Oscillator   1955-Discontinued

Thanks all for your help,

 

 

Edited by Russ Huber
Posted (edited)

This short lived patented adjustment case was introduced in late 1917? - 1918. It won't hold its sweep adjustment.

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Edited by Russ Huber
Posted

Thanks Russ. I sure do appreciate the help.

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