Automatic tracking apparatus
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United States of America Patent
Stats
-
Mar 4, 1980
Grant Date -
N/A
app pub date -
Nov 22, 1978
filing date -
Nov 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic tracking apparatus is provided for maintaining alignment of music rolls in player organs and player pianos using an improved, air pressure controlled, sensing and control device. More particularly this system incorporates an air pressure sensing device utilizing a piston/cam controlled pendulum to operate a pneumatic alignment device.
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