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 > July 2002 > 2002.07.21 > 08Prev  Next


Substitute for Open Cup Mercury Switch
By Michael Woolf

I share my old friend Cecil Grace's concerns about the open pot of mercury
in the Welte original.  Faced with the same problem I retained the original
rather rustic-looking switch assembly but bypassed the dangerous contacts
by substituting a sealed-in-glass mercury switch mounted on the arm.  It's
a simple method that keeps a certain integrity to the original.

Michael Woolf
New Zealand


(Message sent Sun 21 Jul 2002, 08:32:26 GMT, from time zone GMT+1200.)

Key Words in Subject:  Cup, Mercury, Open, Substitute, Switch

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 1995-2020 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

. .