LIGHT
AND SOUND
DISCOVERY CENTRE
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PROVIDING REAL CONTEXTS FOR
SCIENCE LEARNING
BASIC
HINTS ON THE CARE OF EDISON PHONOGRAPHS
1. Keep the machine as
original
as possible. Originality adds value.
2. The box and lid
- Boxes were usually made
of
oak.
- Retain the original
French
polish.
- Only re-polish if very
badly
damaged.
- Never use lacquer,
varnish,
etc. -
only French polish.
- Preserve the transfer
(decal)
on box
at ALL COSTS.
- Never use silicone
polishes.
Use microcrystalline
wax.
3. The top plate
- This usually had a black
Japanned finish
with gold lines.
- Never clean top with
turpentine (it
will craze).
- Never clean the top with
methylated
spirit (it will go sticky).
- Clean top with oily rag
or
cotton bud.
- Never re-touch the gold
lines
unless
doing a complete re-paint job.
- Only strip and re-paint
top
plate if
paint is badly damaged.
4. Metal parts
- Nickel plating can be
cleaned
with
tarnish removers or brass polish or fine steel wool.
- Avoid using buffing
wheels,
they can
remove the nickel.
- Polish with Duraglit
type pads
(never use polish solutions containing abrasive powders).
- If parts are rusted, they
should be
nickel plated only - never chrome plated.
5. Horn
- Preserve original paint
at
ALL COSTS,
even if some damage has occurred.
- Horns with original paint
are
rare
and worth preserving.
- Repainting horn with
lacquer
spray
can be better than using enamel.
6. Motor
- Oil motor regularly - you
cannot over
oil.
- If motor 'thumps' when
playing - spring
case need greasing inside with graphite grease.
- Never work on a motor
unless
it is
fully unwound.
- A spring may break at any
time. Springs
can be repaired.
7. Reproducer (sound box, pick-up)
- Reproducers contain a
sapphire stylus
or a diamond stylus - never a steel needle.
- Styli can get chipped and
can
ruin
records - check with a handlens for chips.
- A worn stylus will give a
blurry sound
- records should sound crisp and clear.
- If records have a buzzing
sound on
loud notes, rubber gaskets in reproducer need replacing. Seek advice.
- Replacement styli are
available. Never
use LP or 78 stylus).
8. Records
Treat records carefully - they
can
get scratched, and wax cylinder are fragile.
There are basically 3 types of
cylinder records:
- wax 2 minute (1890's -
1912)
- use
model C reproducer or combination model K.
- wax 4 minute (1908 -
1912) -
use model
H reproducer or combination model K.
- celluloid (blue) 4 minute
(1912 - 1929)
- use model H or heavier Diamond reproducer.
Never use the heavier Diamond
reproducer
on wax records. Other types of reproducers were manufactured. Also
other
types of records exist.
9. Dating Phonographs
Add a few years to the last
patent
date on the machine (except for later Amberolas).
Phonographs with horns are all
pre 1913. Most internal horn Phonographs date from the 1920's.
The last Phonographs and cylinder
records were produced in 1929.
Phone 08 9330 1636 for free advice.
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