hosted on condor3913
 Mechanical Music Digest 
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 > Tech > AeoW > rv_071

Orchestrelle, Chapter 7
Rebuilding the Æolian Orchestrelle
58-Note Player Reed Organ, 1912 Model "W"
by Richard Vance
Copyright (C) 2000 by Richard Z. Vance
rev. A, 7 September 2000

Chapter 7 - The Flat Hook as a Gasket Clamp

   Several places in the organ, flat hooks instead of screws were used to close gasketed joints.  This novel arrangemet is an interesting trick, new to me.  Since it might be useful to someone, I am including the details.  The picture shows one instance, on the primary valve box, where the supply nipple which will go in one corner, was in the way of one of the chest screws, and a hook was used instead.

    I wondered how these could be effective in properly clamping a gasket, in place of the usual screw.  The secret is to modify the hook so that it provides a wedging action when closed.  Flat brass hooks,  normally have a uniform inside radius, from the attachment hole to the inside of the hook.  The tip of the hook can be bent slightly outwards with a pliers, about 1/16".  Then the working radius of the hook decreases as the hook is more fully engaged with the other screw.

    After the hook is modified and installed as shown, smack the place indicated by the arrow with a screwdriver and hammer.  The wedging action will draw the gasket up tight, just like a screw.  If  a joint with such a hook has a new gasket, it probably won't fit up right, because the dimensions are slightly different, or the old screws have loostened.  Plug the old holes and start over at a new place.  New 1" flat brass hooks can be found in some old fashioned hardware stores, or from McMaster-Carr; item 1775A13 on page 2656.

 [back] [forward] [index]

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 1995-2022 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