Coin Slot

Coin Slot Magazine - #077 - 1981 - July [International Arcade Museum]
shipped its wick cups are filled with a non-fluid oil
Figure 2 shows our later and improved method of
sufficient for perhaps six months'operation, depending
lubrication. Surrounding the bronze bearing sleeve is
of course on how much of the time it is operated. It
quite a large chamber which is packed full of wool
must be remembered that lubricants have a tendency
waste, saturated with lubricant. The wool waste touches
to waste by creepage and by evaporation. The motor
against the shaft, conveying to the bearing surfaces
may have been in the stockroom at the piano factory for
quite a copious amount of oil. This oil is returned to the
a long time, and the oil wasted away there; therefore it
waste again and used over and over. In the latest
is very advisable to renew the oil in the wick cups upon
design, shown in Figure 2, the wool packed space
installing the motor. One should never use linseed oil,
entirely surrounds the bearing sleeve. There is a very
lard oil, tallow, paraffin, or heavy grease. In an emer
large amount of lubricant in the waste, probably suffi
gency, vaseline will answer, but it should be replaced
cient to last for several years. (In the earlier design
with proper lubricant at the earliest opportunity. Wick
there was not space for such a large quantity.) This type
oil cups should be refilled two or three times a year. We
of bearing works equally well in a horizontal or vertical
supply a non-fluid oil for wick cup motors which is sold
position. There are refilling holes in the top and bottom
in collapsible tubes. This is known as "Lubricating
of the
Compound No. 1" Address The Holtzer-Cabot Electric
determine
Company, 125 Amory Street, Boston, Massachusetts.
remove the motor from the piano, then simply unscrew
Price 500 per tube including postage.
one of these brass plugs, and then press the waste
waste
chamber closed by brass plugs.
whether additional lubricant is
To
needed,
down firmly with a screw driver, causing the excess of
the lubricant to be squeezed out of the waste and
If the motor is in an upright type of piano and has its
shaft horizontal, it is satisfactory to use a good dynamo
oil in the wick cups. Some upright piano motors are
appear on the surface of the waste. If you can see such
provided with an oil tube over the top to the rear
the same time pressing down firmly, it is an indication
an accumulation by peering down into the opening, at
bearing which must be oiled two or three times a year
that no further lubricant is needed. Should it be dis
with good dynamo oil. When used in a grand piano it
becomes advisable to replenish the lubricant of a wick
cup more frequently than two or three times a year,
covered that the waste has become dry, simply squirt in
because it wastes away faster, the shaft being in a
verticle position.
a half teaspoonful of good dynamo oil and screw the
brass plug back in place again. Do not use more than
that amount for fear of excessive oiling,
which is
harmful to commutators, brushes, and windings.
WANTED
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© The
Arcade Museum
July International
1981
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ANY
INTERESTED
CONDITION
IN BUYING
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(303) 321-2242
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THE COIN SLOT—39