Pylon Model P Vacuum Tube Hearing Aid
The Pylon Model P vacuum tube hearing aid was
manufactured by Park Royal Scientific Instruments Ltd. of London, England in 1945.
The Model P was their first and only hearing aid. It was both popular
and low priced.
The black plastic case measured 3⅜” by 4⅛” by 1⅛”.
It contained 3 vacuum tubes. Without the batteries, it
weighed 5˝ oz.
The fancy designed round microphone grill is shown upper center.
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Top view of the Pylon Model P showing the off-on/volume control slider
switch (center) and the earphone jacks to the right.
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The inside of the Pylon Model P showing the battery compartment. The two
U10 "A"
batteries go one on each side (top left and right) and the 30 volt
Eveready No. 430 "B" battery on the
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The inside of the back cover showing the make and model number. |
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A close-up of the front view of the earphone. The earphone is 2" in
diameter. |
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A close-up of the rear view of the earphone. The 4 letters—PRSI—stand
for Park Royal Scientific Instruments |
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The Pylon Model P in its original box. |
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The original box for the Pylon Model P.
Here is the 4-page
original
instruction booklet for the Pylon Model P. The Pylon hearing aids
were obviously being sold (and repaired) by T. Hawksley Ltd. of London,
England.
Also, apparently this hearing aid was repaired in 1952. Here is the
letter
from T. Hawksley Ltd. stating what repair work was done, and the
receipt
showing the cost of repairs as 1 shilling.
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