CD 282: USA

HEMINGRAY / No 2 PROVO TYPE

PATENT MAY 2 1893 / PATENTED APRIL 25 1899

 

Picture Courtesy Bob Berry

KNOWLES 5 1/2

BOSTON

 

Picture Courtesy Bob Berry

"Prism" (Knowles product)

 

 

Picture Courtesy Bob Berry

HEMINGRAY / No 2 PROVO TYPE

PATENT MAY 2 1893

 

Picture Courtesy Bob Berry

HEMINGRAY / No 2 PROVO TYPE

PATENT MAY 2 1893

 

Picture Courtesy Bob Berry

 

This CD is known as a "Provo" as it was originally developed for the Telluride Power Transmission Company in Provo, UT.

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