Mechanical Music Digest  Gallery
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 > Gallery > Pictures > DAsteamboat1


Announcement: End-of-Year Fundraising Drive In Progress

Our End-Of-Year Fundraising drive is in progress. If you haven't contributed to the operation of the MMD in the last 12 months, this would be a great time to contribute. There's a PayPal link at the bottom of each page on the website.

If you aren't sure when you last contributed, please send me a note using the contact form at the bottom of this page and I'll look you up in my records.

Thank you for your generous support!
Jody

P.S. While your support is needed and appreciated, you do not need to contribute to be a subscriber. If you have subscribed and aren't receiving your Digest, please use the contact form at the bottom of the page and let me know. Thanks!

Duo-Art Cam-Operated "Steamboat" Pump
by Richard Vance (010911 MMD)

DAsteamboat1.jpg (24 kb)

The early Aeolian Company "Duo-Art Steamboat Pump" had three pairs of bellows which were moved by a camshaft instead of a crankshaft.  Here is a picture, copied from an eBay entry, where someone was selling one.  A coil spring connects the pair of bellows on each side of an eccentric cam.  The spring is strong enough to keep the rollers in contact with the eccentric cams at all times.

The Duo-Art steamboat pump has the reputation of being the quietest ever devised, since there are no connecting-rod bearings to loosen and knock.  The stroke is comparatively short, compared with other designs, but it can go quite fast without noise.  The wooden rollers are covered with leather, for even more noise reduction.  See http://www.mmdigest.com/Pictures/tuttle02.html

Although this was a fine design, and many collectors prize it, it was so big and thick that it was soon replaced.  After that, they briefly went to a similar arrangement with four bellows and short connecting rods instead of eccentrics.  You can see one on Sam Harris' website: http://www.geocities.com/Heartland/Ranch/9374/stroud/page09.html

By the 1920s Duo-Art had gone to the standard box pump, just like Ampico.

Richard Vance
Date: Tue, 11 Sep 2001 10:07:43 -0400


11 September 2001

Home    Archives    Calendar    Gallery    Store    Links    Info   


Enter text below to search the MMD Website with Google
Loading



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 1995-2017 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

Pay via PayPal

No PayPal account required

                                     
Translate This Page

. .