Wednesday, January 3, 2018
REPAIR OF A ROLLER ORGAN PART 6
We were sent an Autophone Concert Roller Organ for evaluation and repair.
As the assembly progressed, we finally reached the point where we inserted a song and tried it.
It seems that the tangs on the end of the valves that are tripped when the song plays, are very fussy about being properly located.
The adjustments are made by bending the tangs. When you bend them, it is easy to throw the valve faces out of good closure, so this turns out to be a fussy job. Not only must they project the correct amount, but they must be vertically aligned to get the notes timed right.
Basically the ends must be correctly positioned both vertically and horizontally and at the same time, the valve face must meet the seat exactly.