Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
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

Home    Archives    Calendar    Gallery    Store    Links    Info   


Enter text below to search the MMD Website with Google



CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2024 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Please Support Publication of the MMD with your Generous Donation

Pay via PayPal

No PayPal account required

                                     
Translate This Page