Coin Slot Magazine - #083 - 1982 - January [International Arcade Museum]
on the takeup spool and putting the bell crank for
reversing into the play position. This operation is
discussed in greater detail below.
On the left side, a spring loaded arm —the "lock
lever for reel" (126X) rides in a six-pointed star wheel —
the "reel lock cam" (16X). During playing of a music roll,
this lock lever prevents the reel from turning; during
the change cycle, the lever unlocks, allowing the reel
to be turned 1 /6 of a revolution as part of the cycle, or
turned manually to any position by hand when the
machine is shut off after winding.
On both sides of the reel, the "transfer arms" (96X
and 97X) serve two functions. When the roll is almost
fully rewound, the leader wire pulls the transfer arms
up, shutting the machine off and preparing the changer
for the change cycle. At the end of the change cycle,
after another coin is deposited, the transfer arms
engage the new roll leader and move downward,
threading the roll onto the takeup spool. The arms
remain down until the new roll is done playing and it
rewinds, pulling them back up again and starting
another cycle.
On the left side of the changer is a shutoff pump
pneumatic not labelled in the WurliTzer photographs.
At the end of rewind, a lever on the changer pushes this
pneumatic open, pumping air out of the shutoff pneu
matic in the coin mechanism and subtracting one
credit or shutting the machine off. Between songs on
one roll, an ordinary shutoff valve performs the same
function, as described below.
Sequence of Operation
With six music rolls in place in the reel, with the six
leader wires secured by the latches on the reel, the
piano is at rest with the reel lock lever released, ready
for manual selection of one of the rolls (The reel shaft
extends out the left side of the case, where a knob
allows the patron to turn the reel manually.) The roll
indicator numbers are positioned for viewing through
the glass door in front of the roll changer in such a way
that the desired roll is one station (or one sixth of a
revolution) above the tracker bar and takeup spool
When a coin is deposited, the changer goes through its
cycle, turning the reel one sixth of a revolution, and
then threading the newly-selected roll. This arrange
ment is used so that when a new roll is not selected by
hand, the changer will automatically play the next roll
Continued on page 46
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Right end view of changer with part numbers. This photograph is from a reprint of "Instructions for care of
WurliTzer Roll Changer" by Vestal Press.
© The International Arcade Museum
January 1982
http://www.arcade-museum.com/
THE COIN SLOT —45