Columbus, OH
2/38 Schuelke
1902
Photos of the Great Division
Click on the photo to see a larger image
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The Great Division sits directly under the Swell Division in the center of the organ. It is surrounded on either side and behind by the Pedal Division. The pipes in the organ's facade also are a part of the Great. There are 17 ranks totaling 1,037 pipes in the Great. |
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All the way in the front are some of the largest and smallest pipes in the Great. Across the left side is the facade and pipes of the Open Diapason rank. The gray air supply pipes can be seen under the rack. Immediately behind it is the petite four rank Mixture, Super Octave (two rows of pipes in the center of the photo) and Quint. |
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Flipping the angle around we can better see the other ranks. From left to right are the Flute Harmonique, Dulciana, Violina (skinnier rank), First Open Diapason, Second Open Diapason and Octave. The First and Second Open Diapason ranks are essentially the same except that the First Open Diapason is louder. This gives the organist options for volume for the fundamental tone of the organ. |
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On the other side of
the walkway from right to left are the Trumpet, Unda Maris, Melodia and
Doppel Flöte (stoppers in the tops of the pipes). The Doppel
Flöte is unique in that most of the pipes in the rank have two
mouths instead of just one. |
 | Space is at a premium, so the largest pipes in the trumpet rank are mitered so that they can fit in the space. Mitering does not affect the volume or tone of the pipe. |
 | Many of the pipes have their name stamped or written on the pipe. In this photo we can see pipes from the Dulciana and Open Diapason ranks. Sometimes the numbers stamped on pipes indicate the organ builder's opus number but this is not the case for this instrument. |
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The largest pipes in the Great are the Open Diapason pipes located in the facade. The back lighting allows for a peak of the other pipes in the Great behind the facade. The ornate artwork on the pipes is original to the instrument. |
  | Here's are a couple views of the back of the pipes in the facade. Note that the pipes have large openings in the rear. This is where fashion and function meet. The pipes need to be full length to look good in the facade, but making them all the same length would mean they would all speak at the same pitch. The way around this is by creating openings in the pipe at the length needed to create the desired pitch. Thus the pipe speaks at the pitch length between the mouth and the opening rather than at the full length of the pipe. |