Anatomy of a WurliTzer Theatre Pipe Organ
Stop Tab Straight Rail
The action here is the same as found on the horseshoe stop rail.
The tabs pivot on the brass rod running through the screw eyes between each tab.
The "C-springs" hold the tabs in place and tension the tabs in the on or off position.
The screws above the springs are adjusted to set the changeover point of the tab.
The arm behind the tab has a silver contact collar which makes the contact with the
contact wires when the tab is on, as seen on the second tab, and also alows the preset
pneumatics (not fitted yet) to move the tab.
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