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MMD > Archives > November 1996 > 1996.11.09 > 06Prev  Next

Aolian-Hammond Pump
By Eugene Rogers

As all of you are aware, I am in the process of restoring an Aolian-Hammond Player Organ and have run into a problem with the vaccum pump. I have disasembled the pump and recovered all pneumatic with new rubberized cloth. The pump is a conventional four bellows vacuum pump. Each bellows has 24 exaust holes (1/2" diameter), set in pairs of six each (6-6 space 6-6). Each pair of holes is covered with white gussett leather with a 2" X 5" heavy-duty rubberized flap tacked over the pair of holes. There is a 1" X 3 3/4" piece of felt glued in the center of the flap. The felt does not cover the twelve exaust holes. My question is, what is the purpose of the felt? I would think that leather to leather would be a better seal on the exaust stroke.

Eugene Rogers

(Message sent Sat 9 Nov 1996, 10:37:47 GMT, from time zone GMT-0500.)

Key Words in Subject:  Aolian-Hammond, Pump

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